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core/glibc/glibc-2.36-3.patch

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diff --git a/NEWS b/NEWS
index f61e521fc8..e92d547e2c 100644
--- a/NEWS
+++ b/NEWS
@@ -5,6 +5,48 @@ See the end for copying conditions.
Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
using `glibc' in the "product" field.
+Version 2.36.1
+
+Major new features:
+
+* The getent tool now supports the --no-addrconfig option. The output of
+ getent with --no-addrconfig may contain addresses of families not
+ configured on the current host i.e. as-if you had not passed
+ AI_ADDRCONFIG to getaddrinfo calls.
+
+Security related changes:
+
+ CVE-2022-39046: When the syslog function is passed a crafted input
+ string larger than 1024 bytes, it reads uninitialized memory from the
+ heap and prints it to the target log file, potentially revealing a
+ portion of the contents of the heap.
+
+The following bugs are resolved with this release:
+
+ [12154] Do not fail DNS resolution for CNAMEs which are not host names
+ [24816] Fix tst-nss-files-hosts-long on single-stack hosts
+ [28846] CMSG_NXTHDR may trigger -Wstrict-overflow warning
+ [29305] Conserve NSS buffer space during DNS packet parsing
+ [29415] nscd: Fix netlink cache invalidation if epoll is used
+ [28937] New DSO dependency sorter does not put new map first if in a cycle
+ [29446] _dlopen now ignores dl_caller argument in static mode
+ [29485] Linux: Terminate subprocess on late failure in tst-pidfd
+ [29490] alpha: New __brk_call implementation is broken
+ [29463] math/test-float128-y1 fails on x86_64
+ [29488] test-ibm128-llround fails on ppc64el when built with gcc-12 and -O2
+ or higher
+ [29528] elf: Call __libc_early_init for reused namespaces
+ [29537] libc: [2.34 regression]: Alignment issue on m68k when using
+ [29539] libc: LD_TRACE_LOADED_OBJECTS changed how vDSO library are
+ [29583] Use 64-bit interfaces in gconv_parseconfdir
+ [29600] Do not completely clear reused namespace in dlmopen
+ [29607] nscd repeatably crashes calling __strlen_avx2 when hosts cache is
+ enabled
+ [29638] libc: stdlib: arc4random fallback is never used
+ [29657] libc: Incorrect struct stat for 64-bit time on linux/generic
+ platforms
+ [29730] broken y2038 support in fstatat on MIPS N64
+
Version 2.36
Major new features:
diff --git a/bits/socket.h b/bits/socket.h
index 2b99dea33b..aac8c49b00 100644
--- a/bits/socket.h
+++ b/bits/socket.h
@@ -245,6 +245,12 @@ struct cmsghdr
+ CMSG_ALIGN (sizeof (struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
+/* Given a length, return the additional padding necessary such that
+ len + __CMSG_PADDING(len) == CMSG_ALIGN (len). */
+#define __CMSG_PADDING(len) ((sizeof (size_t) \
+ - ((len) & (sizeof (size_t) - 1))) \
+ & (sizeof (size_t) - 1))
+
extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
struct cmsghdr *__cmsg) __THROW;
#ifdef __USE_EXTERN_INLINES
@@ -254,18 +260,38 @@ extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
_EXTERN_INLINE struct cmsghdr *
__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
{
+ /* We may safely assume that __cmsg lies between __mhdr->msg_control and
+ __mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of __cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * __msg_control_ptr = (unsigned char *) __mhdr->msg_control;
+ unsigned char * __cmsg_ptr = (unsigned char *) __cmsg;
+
+ size_t __size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (__cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
return (struct cmsghdr *) 0;
+ /* There isn't enough space between __cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr)
+ < __size_needed)
+ || ((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr
+ - __size_needed)
+ < __cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+
+ /* Now, we trust cmsg_len and can use it to find the next header. */
__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg->cmsg_len));
- if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
- + __mhdr->msg_controllen)
- || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
- > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
- /* No more entries. */
- return (struct cmsghdr *) 0;
return __cmsg;
}
#endif /* Use `extern inline'. */
diff --git a/dlfcn/dlopen.c b/dlfcn/dlopen.c
index 2696dde4b1..9b07b4e132 100644
--- a/dlfcn/dlopen.c
+++ b/dlfcn/dlopen.c
@@ -90,7 +90,7 @@ compat_symbol (libdl, ___dlopen, dlopen, GLIBC_2_1);
void *
__dlopen (const char *file, int mode, void *dl_caller)
{
- return dlopen_implementation (file, mode, RETURN_ADDRESS (0));
+ return dlopen_implementation (file, mode, dl_caller);
}
void *
diff --git a/elf/Makefile b/elf/Makefile
index fd77d0c7c8..72178d33ff 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -374,6 +374,8 @@ tests += \
tst-align \
tst-align2 \
tst-align3 \
+ tst-audit-tlsdesc \
+ tst-audit-tlsdesc-dlopen \
tst-audit1 \
tst-audit2 \
tst-audit8 \
@@ -408,6 +410,7 @@ tests += \
tst-dlmopen4 \
tst-dlmopen-dlerror \
tst-dlmopen-gethostbyname \
+ tst-dlmopen-twice \
tst-dlopenfail \
tst-dlopenfail-2 \
tst-dlopenrpath \
@@ -765,6 +768,8 @@ modules-names += \
tst-alignmod3 \
tst-array2dep \
tst-array5dep \
+ tst-audit-tlsdesc-mod1 \
+ tst-audit-tlsdesc-mod2 \
tst-audit11mod1 \
tst-audit11mod2 \
tst-audit12mod1 \
@@ -798,6 +803,7 @@ modules-names += \
tst-auditmanymod7 \
tst-auditmanymod8 \
tst-auditmanymod9 \
+ tst-auditmod-tlsdesc \
tst-auditmod1 \
tst-auditmod9a \
tst-auditmod9b \
@@ -834,6 +840,8 @@ modules-names += \
tst-dlmopen1mod \
tst-dlmopen-dlerror-mod \
tst-dlmopen-gethostbyname-mod \
+ tst-dlmopen-twice-mod1 \
+ tst-dlmopen-twice-mod2 \
tst-dlopenfaillinkmod \
tst-dlopenfailmod1 \
tst-dlopenfailmod2 \
@@ -990,23 +998,8 @@ modules-names += tst-gnu2-tls1mod
$(objpfx)tst-gnu2-tls1: $(objpfx)tst-gnu2-tls1mod.so
tst-gnu2-tls1mod.so-no-z-defs = yes
CFLAGS-tst-gnu2-tls1mod.c += -mtls-dialect=gnu2
+endif # $(have-mtls-dialect-gnu2)
-tests += tst-audit-tlsdesc tst-audit-tlsdesc-dlopen
-modules-names += tst-audit-tlsdesc-mod1 tst-audit-tlsdesc-mod2 tst-auditmod-tlsdesc
-$(objpfx)tst-audit-tlsdesc: $(objpfx)tst-audit-tlsdesc-mod1.so \
- $(objpfx)tst-audit-tlsdesc-mod2.so \
- $(shared-thread-library)
-CFLAGS-tst-audit-tlsdesc-mod1.c += -mtls-dialect=gnu2
-CFLAGS-tst-audit-tlsdesc-mod2.c += -mtls-dialect=gnu2
-$(objpfx)tst-audit-tlsdesc-dlopen: $(shared-thread-library)
-$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-audit-tlsdesc-mod1.so \
- $(objpfx)tst-audit-tlsdesc-mod2.so
-$(objpfx)tst-audit-tlsdesc-mod1.so: $(objpfx)tst-audit-tlsdesc-mod2.so
-$(objpfx)tst-audit-tlsdesc.out: $(objpfx)tst-auditmod-tlsdesc.so
-tst-audit-tlsdesc-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
-$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-auditmod-tlsdesc.so
-tst-audit-tlsdesc-dlopen-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
-endif
ifeq (yes,$(have-protected-data))
modules-names += tst-protected1moda tst-protected1modb
tests += tst-protected1a tst-protected1b
@@ -2967,3 +2960,25 @@ $(objpfx)tst-tls-allocation-failure-static-patched.out: \
grep -q '^Fatal glibc error: Cannot allocate TLS block$$' $@ \
&& grep -q '^status: 127$$' $@; \
$(evaluate-test)
+
+$(objpfx)tst-audit-tlsdesc: $(objpfx)tst-audit-tlsdesc-mod1.so \
+ $(objpfx)tst-audit-tlsdesc-mod2.so \
+ $(shared-thread-library)
+ifeq (yes,$(have-mtls-dialect-gnu2))
+# The test is valid for all TLS types, but we want to exercise GNU2
+# TLS if possible.
+CFLAGS-tst-audit-tlsdesc-mod1.c += -mtls-dialect=gnu2
+CFLAGS-tst-audit-tlsdesc-mod2.c += -mtls-dialect=gnu2
+endif
+$(objpfx)tst-audit-tlsdesc-dlopen: $(shared-thread-library)
+$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-audit-tlsdesc-mod1.so \
+ $(objpfx)tst-audit-tlsdesc-mod2.so
+$(objpfx)tst-audit-tlsdesc-mod1.so: $(objpfx)tst-audit-tlsdesc-mod2.so
+$(objpfx)tst-audit-tlsdesc.out: $(objpfx)tst-auditmod-tlsdesc.so
+tst-audit-tlsdesc-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
+$(objpfx)tst-audit-tlsdesc-dlopen.out: $(objpfx)tst-auditmod-tlsdesc.so
+tst-audit-tlsdesc-dlopen-ENV = LD_AUDIT=$(objpfx)tst-auditmod-tlsdesc.so
+
+$(objpfx)tst-dlmopen-twice.out: \
+ $(objpfx)tst-dlmopen-twice-mod1.so \
+ $(objpfx)tst-dlmopen-twice-mod2.so
diff --git a/elf/dl-cache.c b/elf/dl-cache.c
index 8bbf110d02..b97c17b3a9 100644
--- a/elf/dl-cache.c
+++ b/elf/dl-cache.c
@@ -509,8 +509,9 @@ _dl_load_cache_lookup (const char *name)
we are accessing. Therefore we must make the copy of the
mapping data without using malloc. */
char *temp;
- temp = alloca (strlen (best) + 1);
- strcpy (temp, best);
+ size_t best_len = strlen (best) + 1;
+ temp = alloca (best_len);
+ memcpy (temp, best, best_len);
return __strdup (temp);
}
diff --git a/elf/dl-hwcaps.c b/elf/dl-hwcaps.c
index 6f161f6ad5..92eb53790e 100644
--- a/elf/dl-hwcaps.c
+++ b/elf/dl-hwcaps.c
@@ -193,7 +193,7 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
/* Each hwcaps subdirectory has a GLIBC_HWCAPS_PREFIX string prefix
and a "/" suffix once stored in the result. */
hwcaps_counts.maximum_length += strlen (GLIBC_HWCAPS_PREFIX) + 1;
- size_t total = (hwcaps_counts.count * (strlen (GLIBC_HWCAPS_PREFIX) + 1)
+ size_t hwcaps_sz = (hwcaps_counts.count * (strlen (GLIBC_HWCAPS_PREFIX) + 1)
+ hwcaps_counts.total_length);
/* Count the number of bits set in the masked value. */
@@ -229,11 +229,12 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
assert (m == cnt);
/* Determine the total size of all strings together. */
+ size_t total;
if (cnt == 1)
- total += temp[0].len + 1;
+ total = temp[0].len + 1;
else
{
- total += temp[0].len + temp[cnt - 1].len + 2;
+ total = temp[0].len + temp[cnt - 1].len + 2;
if (cnt > 2)
{
total <<= 1;
@@ -255,6 +256,7 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
/* This is the overall result, including both glibc-hwcaps
subdirectories and the legacy hwcaps subdirectories using the
power set construction. */
+ total += hwcaps_sz;
struct r_strlenpair *overall_result
= malloc (*sz * sizeof (*result) + total);
if (overall_result == NULL)
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index 4c86dc694e..67fb2e31e2 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -854,6 +854,23 @@ _dl_lookup_symbol_x (const char *undef_name, struct link_map *undef_map,
if (__glibc_unlikely (current_value.m->l_used == 0))
current_value.m->l_used = 1;
+ if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_BINDINGS))
+ {
+ const char *reference_name = undef_map->l_name;
+
+ _dl_debug_printf ("binding file %s [%lu] to %s [%lu]: %s symbol `%s'",
+ DSO_FILENAME (reference_name),
+ undef_map->l_ns,
+ DSO_FILENAME (current_value.m->l_name),
+ current_value.m->l_ns,
+ protected ? "protected" : "normal", undef_name);
+ if (version)
+ _dl_debug_printf_c (" [%s]\n", version->name);
+ else
+ _dl_debug_printf_c ("\n");
+ }
+
+
*ref = current_value.s;
return LOOKUP_VALUE (current_value.m);
}
diff --git a/elf/dl-open.c b/elf/dl-open.c
index a23e65926b..e7db5e9642 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -850,6 +850,7 @@ no more namespaces available for dlmopen()"));
++GL(dl_nns);
}
+ GL(dl_ns)[nsid].libc_map = NULL;
_dl_debug_update (nsid)->r_state = RT_CONSISTENT;
}
/* Never allow loading a DSO in a namespace which is empty. Such
diff --git a/elf/dl-sort-maps.c b/elf/dl-sort-maps.c
index 96638d7ed1..3e2a6a584e 100644
--- a/elf/dl-sort-maps.c
+++ b/elf/dl-sort-maps.c
@@ -27,12 +27,12 @@
If FOR_FINI is true, this is called for finishing an object. */
static void
_dl_sort_maps_original (struct link_map **maps, unsigned int nmaps,
- unsigned int skip, bool for_fini)
+ bool force_first, bool for_fini)
{
/* Allows caller to do the common optimization of skipping the first map,
usually the main binary. */
- maps += skip;
- nmaps -= skip;
+ maps += force_first;
+ nmaps -= force_first;
/* A list of one element need not be sorted. */
if (nmaps <= 1)
@@ -182,8 +182,9 @@ dfs_traversal (struct link_map ***rpo, struct link_map *map,
static void
_dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
- unsigned int skip __attribute__ ((unused)), bool for_fini)
+ bool force_first, bool for_fini)
{
+ struct link_map *first_map = maps[0];
for (int i = nmaps - 1; i >= 0; i--)
maps[i]->l_visited = 0;
@@ -208,14 +209,6 @@ _dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
Adjusting the order so that maps[0] is last traversed naturally avoids
this problem.
- Further, the old "optimization" of skipping the main object at maps[0]
- from the call-site (i.e. _dl_sort_maps(maps+1,nmaps-1)) is in general
- no longer valid, since traversing along object dependency-links
- may "find" the main object even when it is not included in the initial
- order (e.g. a dlopen()'ed shared object can have circular dependencies
- linked back to itself). In such a case, traversing N-1 objects will
- create a N-object result, and raise problems.
-
To summarize, just passing in the full list, and iterating from back
to front makes things much more straightforward. */
@@ -274,6 +267,27 @@ _dl_sort_maps_dfs (struct link_map **maps, unsigned int nmaps,
}
memcpy (maps, rpo, sizeof (struct link_map *) * nmaps);
+
+ /* Skipping the first object at maps[0] is not valid in general,
+ since traversing along object dependency-links may "find" that
+ first object even when it is not included in the initial order
+ (e.g., a dlopen'ed shared object can have circular dependencies
+ linked back to itself). In such a case, traversing N-1 objects
+ will create a N-object result, and raise problems. Instead,
+ force the object back into first place after sorting. This naive
+ approach may introduce further dependency ordering violations
+ compared to rotating the cycle until the first map is again in
+ the first position, but as there is a cycle, at least one
+ violation is already present. */
+ if (force_first && maps[0] != first_map)
+ {
+ int i;
+ for (i = 0; maps[i] != first_map; ++i)
+ ;
+ assert (i < nmaps);
+ memmove (&maps[1], maps, i * sizeof (maps[0]));
+ maps[0] = first_map;
+ }
}
void
@@ -286,7 +300,7 @@ _dl_sort_maps_init (void)
void
_dl_sort_maps (struct link_map **maps, unsigned int nmaps,
- unsigned int skip, bool for_fini)
+ bool force_first, bool for_fini)
{
/* It can be tempting to use a static function pointer to store and call
the current selected sorting algorithm routine, but experimentation
@@ -296,9 +310,9 @@ _dl_sort_maps (struct link_map **maps, unsigned int nmaps,
input cases. A simple if-case with direct function calls appears to
be the fastest. */
if (__glibc_likely (GLRO(dl_dso_sort_algo) == dso_sort_algorithm_original))
- _dl_sort_maps_original (maps, nmaps, skip, for_fini);
+ _dl_sort_maps_original (maps, nmaps, force_first, for_fini);
else
- _dl_sort_maps_dfs (maps, nmaps, skip, for_fini);
+ _dl_sort_maps_dfs (maps, nmaps, force_first, for_fini);
}
#endif /* HAVE_TUNABLES. */
diff --git a/elf/dso-sort-tests-1.def b/elf/dso-sort-tests-1.def
index 5f7f18ef27..4bf9052db1 100644
--- a/elf/dso-sort-tests-1.def
+++ b/elf/dso-sort-tests-1.def
@@ -64,3 +64,10 @@ output: b>a>{}<a<b
tst-bz15311: {+a;+e;+f;+g;+d;%d;-d;-g;-f;-e;-a};a->b->c->d;d=>[ba];c=>a;b=>e=>a;c=>f=>b;d=>g=>c
output(glibc.rtld.dynamic_sort=1): {+a[d>c>b>a>];+e[e>];+f[f>];+g[g>];+d[];%d(b(e(a()))a()g(c(a()f(b(e(a()))))));-d[];-g[];-f[];-e[];-a[<a<c<d<g<f<b<e];}
output(glibc.rtld.dynamic_sort=2): {+a[d>c>b>a>];+e[e>];+f[f>];+g[g>];+d[];%d(b(e(a()))a()g(c(a()f(b(e(a()))))));-d[];-g[];-f[];-e[];-a[<g<f<a<b<c<d<e];}
+
+# Test that even in the presence of dependency loops involving dlopen'ed
+# object, that object is initialized last (and not unloaded prematurely).
+# Final destructor order is indeterminate due to the cycle.
+tst-bz28937: {+a;+b;-b;+c;%c};a->a1;a->a2;a2->a;b->b1;c->a1;c=>a1
+output(glibc.rtld.dynamic_sort=1): {+a[a2>a1>a>];+b[b1>b>];-b[<b<b1];+c[c>];%c(a1());}<a<a2<c<a1
+output(glibc.rtld.dynamic_sort=2): {+a[a2>a1>a>];+b[b1>b>];-b[<b<b1];+c[c>];%c(a1());}<a2<a<c<a1
diff --git a/elf/elf.h b/elf/elf.h
index 02a1b3f52f..014393f3cc 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -4085,8 +4085,11 @@ enum
#define R_NDS32_TLS_DESC 119
/* LoongArch ELF Flags */
-#define EF_LARCH_ABI 0x07
-#define EF_LARCH_ABI_LP64D 0x03
+#define EF_LARCH_ABI_MODIFIER_MASK 0x07
+#define EF_LARCH_ABI_SOFT_FLOAT 0x01
+#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
+#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
+#define EF_LARCH_OBJABI_V1 0x40
/* LoongArch specific dynamic relocations */
#define R_LARCH_NONE 0
diff --git a/elf/rtld.c b/elf/rtld.c
index cbbaf4a331..3e771a93d8 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -2122,6 +2122,12 @@ dl_main (const ElfW(Phdr) *phdr,
if (l->l_faked)
/* The library was not found. */
_dl_printf ("\t%s => not found\n", l->l_libname->name);
+ else if (strcmp (l->l_libname->name, l->l_name) == 0)
+ /* Print vDSO like libraries without duplicate name. Some
+ consumers depend of this format. */
+ _dl_printf ("\t%s (0x%0*Zx)\n", l->l_libname->name,
+ (int) sizeof l->l_map_start * 2,
+ (size_t) l->l_map_start);
else
_dl_printf ("\t%s => %s (0x%0*Zx)\n",
DSO_FILENAME (l->l_libname->name),
diff --git a/elf/tst-dlmopen-twice-mod1.c b/elf/tst-dlmopen-twice-mod1.c
new file mode 100644
index 0000000000..0eaf04948c
--- /dev/null
+++ b/elf/tst-dlmopen-twice-mod1.c
@@ -0,0 +1,37 @@
+/* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Module 1.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+
+static void __attribute__ ((constructor))
+init (void)
+{
+ puts ("info: tst-dlmopen-twice-mod1.so loaded");
+ fflush (stdout);
+}
+
+static void __attribute__ ((destructor))
+fini (void)
+{
+ puts ("info: tst-dlmopen-twice-mod1.so about to be unloaded");
+ fflush (stdout);
+}
+
+/* Large allocation. The second module does not have this, so it
+ should load libc at a different address. */
+char large_allocate[16 * 1024 * 1024];
diff --git a/elf/tst-dlmopen-twice-mod2.c b/elf/tst-dlmopen-twice-mod2.c
new file mode 100644
index 0000000000..40c6c01f96
--- /dev/null
+++ b/elf/tst-dlmopen-twice-mod2.c
@@ -0,0 +1,50 @@
+/* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Module 2.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <ctype.h>
+#include <stdio.h>
+
+static void __attribute__ ((constructor))
+init (void)
+{
+ puts ("info: tst-dlmopen-twice-mod2.so loaded");
+ fflush (stdout);
+}
+
+static void __attribute__ ((destructor))
+fini (void)
+{
+ puts ("info: tst-dlmopen-twice-mod2.so about to be unloaded");
+ fflush (stdout);
+}
+
+int
+run_check (void)
+{
+ puts ("info: about to call isalpha");
+ fflush (stdout);
+
+ volatile char ch = 'a';
+ if (!isalpha (ch))
+ {
+ puts ("error: isalpha ('a') is not true");
+ fflush (stdout);
+ return 1;
+ }
+ return 0;
+}
diff --git a/elf/tst-dlmopen-twice.c b/elf/tst-dlmopen-twice.c
new file mode 100644
index 0000000000..70c71fe19c
--- /dev/null
+++ b/elf/tst-dlmopen-twice.c
@@ -0,0 +1,54 @@
+/* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Main.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+#include <support/check.h>
+#include <support/xdlfcn.h>
+
+/* Run the test multiple times, to check finding a new namespace while
+ another namespace is already in use. This used to trigger bug 29600. */
+static void
+recurse (int depth)
+{
+ if (depth == 0)
+ return;
+
+ printf ("info: running at depth %d\n", depth);
+ void *handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-twice-mod1.so",
+ RTLD_NOW);
+ xdlclose (handle);
+ handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-twice-mod2.so", RTLD_NOW);
+ int (*run_check) (void) = xdlsym (handle, "run_check");
+ TEST_COMPARE (run_check (), 0);
+ recurse (depth - 1);
+ xdlclose (handle);
+}
+
+static int
+do_test (void)
+{
+ /* First run the test without nesting. */
+ recurse (1);
+
+ /* Then with nesting. The constant needs to be less than the
+ internal DL_NNS namespace constant. */
+ recurse (10);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/iconv/gconv_parseconfdir.h b/iconv/gconv_parseconfdir.h
index debb96b322..b72933b526 100644
--- a/iconv/gconv_parseconfdir.h
+++ b/iconv/gconv_parseconfdir.h
@@ -29,14 +29,14 @@
# define isspace(__c) __isspace_l ((__c), _nl_C_locobj_ptr)
# define asprintf __asprintf
# define opendir __opendir
-# define readdir __readdir
+# define readdir64 __readdir64
# define closedir __closedir
# define mempcpy __mempcpy
-# define struct_stat struct __stat64_t64
-# define lstat __lstat64_time64
+# define struct_stat64 struct __stat64_t64
+# define lstat64 __lstat64_time64
# define feof_unlocked __feof_unlocked
#else
-# define struct_stat struct stat
+# define struct_stat64 struct stat64
#endif
/* Name of the file containing the module information in the directories
@@ -148,8 +148,8 @@ gconv_parseconfdir (const char *prefix, const char *dir, size_t dir_len)
DIR *confdir = opendir (buf);
if (confdir != NULL)
{
- struct dirent *ent;
- while ((ent = readdir (confdir)) != NULL)
+ struct dirent64 *ent;
+ while ((ent = readdir64 (confdir)) != NULL)
{
if (ent->d_type != DT_REG && ent->d_type != DT_UNKNOWN)
continue;
@@ -161,12 +161,12 @@ gconv_parseconfdir (const char *prefix, const char *dir, size_t dir_len)
&& strcmp (ent->d_name + len - strlen (suffix), suffix) == 0)
{
char *conf;
- struct_stat st;
+ struct_stat64 st;
if (asprintf (&conf, "%s/%s", buf, ent->d_name) < 0)
continue;
if (ent->d_type != DT_UNKNOWN
- || (lstat (conf, &st) != -1 && S_ISREG (st.st_mode)))
+ || (lstat64 (conf, &st) != -1 && S_ISREG (st.st_mode)))
found |= read_conf_file (conf, dir, dir_len);
free (conf);
diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h
index 53f1dbc7c3..c27e7886b7 100644
--- a/include/arpa/nameser.h
+++ b/include/arpa/nameser.h
@@ -55,6 +55,12 @@ int __ns_name_ntop (const unsigned char *, char *, size_t) __THROW;
int __ns_name_unpack (const unsigned char *, const unsigned char *,
const unsigned char *, unsigned char *, size_t) __THROW;
+/* Like ns_samename, but for uncompressed binary names. Return true
+ if the two arguments compare are equal as case-insensitive domain
+ names. */
+_Bool __ns_samebinaryname (const unsigned char *, const unsigned char *)
+ attribute_hidden;
+
#define ns_msg_getflag(handle, flag) \
(((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift)
@@ -89,5 +95,105 @@ libc_hidden_proto (__ns_name_unpack)
extern __typeof (ns_samename) __libc_ns_samename;
libc_hidden_proto (__libc_ns_samename)
+/* Packet parser helper functions. */
+
+/* Verify that P points to an uncompressed domain name in wire format.
+ On success, return the length of the encoded name, including the
+ terminating null byte. On failure, return -1 and set errno. EOM
+ must point one past the last byte in the packet. */
+int __ns_name_length_uncompressed (const unsigned char *p,
+ const unsigned char *eom) attribute_hidden;
+
+/* Iterator over the resource records in a DNS packet. */
+struct ns_rr_cursor
+{
+ /* These members are not changed after initialization. */
+ const unsigned char *begin; /* First byte of packet. */
+ const unsigned char *end; /* One past the last byte of the packet. */
+ const unsigned char *first_rr; /* First resource record (or packet end). */
+
+ /* Advanced towards the end while reading the packet. */
+ const unsigned char *current;
+};
+
+/* Returns the RCODE field from the DNS header. */
+static inline int
+ns_rr_cursor_rcode (const struct ns_rr_cursor *c)
+{
+ return c->begin[3] & 0x0f; /* Lower 4 bits at offset 3. */
+}
+
+/* Returns the length of the answer section according to the DNS header. */
+static inline int
+ns_rr_cursor_ancount (const struct ns_rr_cursor *c)
+{
+ return c->begin[6] * 256 + c->begin[7]; /* 16 bits at offset 6. */
+}
+
+/* Returns the length of the authority (name server) section according
+ to the DNS header. */
+static inline int
+ns_rr_cursor_nscount (const struct ns_rr_cursor *c)
+{
+ return c->begin[8] * 256 + c->begin[9]; /* 16 bits at offset 8. */
+}
+
+/* Returns the length of the additional data section according to the
+ DNS header. */
+static inline int
+ns_rr_cursor_adcount (const struct ns_rr_cursor *c)
+{
+ return c->begin[10] * 256 + c->begin[11]; /* 16 bits at offset 10. */
+}
+
+/* Returns a pointer to the uncompressed question name in wire
+ format. */
+static inline const unsigned char *
+ns_rr_cursor_qname (const struct ns_rr_cursor *c)
+{
+ return c->begin + 12; /* QNAME starts right after the header. */
+}
+
+/* Returns the question type of the first and only question. */
+static inline const int
+ns_rr_cursor_qtype (const struct ns_rr_cursor *c)
+{
+ /* 16 bits 4 bytes back from the first RR header start. */
+ return c->first_rr[-4] * 256 + c->first_rr[-3];
+}
+
+/* Returns the clss of the first and only question (usally C_IN). */
+static inline const int
+ns_rr_cursor_qclass (const struct ns_rr_cursor *c)
+{
+ /* 16 bits 2 bytes back from the first RR header start. */
+ return c->first_rr[-2] * 256 + c->first_rr[-1];
+}
+
+/* Initializes *C to cover the packet [BUF, BUF+LEN). Returns false
+ if LEN is less than sizeof (*HD), if the packet does not contain a
+ full (uncompressed) question, or if the question count is not 1. */
+_Bool __ns_rr_cursor_init (struct ns_rr_cursor *c,
+ const unsigned char *buf, size_t len)
+ attribute_hidden;
+
+/* Like ns_rr, but the record owner name is not decoded into text format. */
+struct ns_rr_wire
+{
+ unsigned char rname[NS_MAXCDNAME]; /* Owner name of the record. */
+ uint16_t rtype; /* Resource record type (T_*). */
+ uint16_t rclass; /* Resource record class (C_*). */
+ uint32_t ttl; /* Time-to-live field. */
+ const unsigned char *rdata; /* Start of resource record data. */
+ uint16_t rdlength; /* Length of the data at rdata, in bytes. */
+};
+
+/* Attempts to parse the record at C into *RR. On success, return
+ true, and C is advanced past the record, and RR->rdata points to
+ the record data. On failure, errno is set to EMSGSIZE, and false
+ is returned. */
+_Bool __ns_rr_cursor_next (struct ns_rr_cursor *c, struct ns_rr_wire *rr)
+ attribute_hidden;
+
# endif /* !_ISOMAC */
#endif
diff --git a/include/bits/wchar2-decl.h b/include/bits/wchar2-decl.h
new file mode 100644
index 0000000000..00b1b93342
--- /dev/null
+++ b/include/bits/wchar2-decl.h
@@ -0,0 +1 @@
+#include <wcsmbs/bits/wchar2-decl.h>
diff --git a/include/resolv.h b/include/resolv.h
index 3590b6f496..4dbbac3800 100644
--- a/include/resolv.h
+++ b/include/resolv.h
@@ -70,5 +70,8 @@ libc_hidden_proto (__libc_res_nameinquery)
extern __typeof (__res_queriesmatch) __libc_res_queriesmatch;
libc_hidden_proto (__libc_res_queriesmatch)
+/* Variant of res_hnok which operates on binary (but uncompressed) names. */
+bool __res_binary_hnok (const unsigned char *dn) attribute_hidden;
+
# endif /* _RESOLV_H_ && !_ISOMAC */
#endif
diff --git a/misc/syslog.c b/misc/syslog.c
index 554089bfc4..f67d4b58a4 100644
--- a/misc/syslog.c
+++ b/misc/syslog.c
@@ -167,7 +167,7 @@ __vsyslog_internal (int pri, const char *fmt, va_list ap,
_nl_C_locobj_ptr);
#define SYSLOG_HEADER(__pri, __timestamp, __msgoff, pid) \
- "<%d>%s %n%s%s%.0d%s: ", \
+ "<%d>%s%n%s%s%.0d%s: ", \
__pri, __timestamp, __msgoff, \
LogTag == NULL ? __progname : LogTag, \
"[" + (pid == 0), pid, "]" + (pid == 0)
@@ -193,28 +193,32 @@ __vsyslog_internal (int pri, const char *fmt, va_list ap,
int vl = __vsnprintf_internal (bufs + l, sizeof bufs - l, fmt, apc,
mode_flags);
if (0 <= vl && vl < sizeof bufs - l)
- {
- buf = bufs;
- bufsize = l + vl;
- }
+ buf = bufs;
+ bufsize = l + vl;
va_end (apc);
}
if (buf == NULL)
{
- buf = malloc (l * sizeof (char));
+ buf = malloc ((bufsize + 1) * sizeof (char));
if (buf != NULL)
{
/* Tell the cancellation handler to free this buffer. */
clarg.buf = buf;
if (has_ts)
- __snprintf (bufs, sizeof bufs,
+ __snprintf (buf, l + 1,
SYSLOG_HEADER (pri, timestamp, &msgoff, pid));
else
- __snprintf (bufs, sizeof bufs,
+ __snprintf (buf, l + 1,
SYSLOG_HEADER_WITHOUT_TS (pri, &msgoff));
+
+ va_list apc;
+ va_copy (apc, ap);
+ __vsnprintf_internal (buf + l, bufsize - l + 1, fmt, apc,
+ mode_flags);
+ va_end (apc);
}
else
{
diff --git a/misc/tst-syslog.c b/misc/tst-syslog.c
index e550d15796..3560b518a2 100644
--- a/misc/tst-syslog.c
+++ b/misc/tst-syslog.c
@@ -68,21 +68,19 @@ static const int priorities[] =
LOG_DEBUG
};
-enum
- {
- ident_length = 64,
- msg_length = 64
- };
+#define IDENT_LENGTH 64
+#define MSG_LENGTH 1024
#define SYSLOG_MSG_BASE "syslog_message"
#define OPENLOG_IDENT "openlog_ident"
+static char large_message[MSG_LENGTH];
struct msg_t
{
int priority;
int facility;
- char ident[ident_length];
- char msg[msg_length];
+ char ident[IDENT_LENGTH];
+ char msg[MSG_LENGTH];
pid_t pid;
};
@@ -147,6 +145,37 @@ check_syslog_message (const struct msg_t *msg, int msgnum, int options,
return true;
}
+static void
+send_syslog_large (int options)
+{
+ int facility = LOG_USER;
+ int priority = LOG_INFO;
+
+ syslog (facility | priority, "%s %d %d", large_message, facility,
+ priority);
+}
+
+static void
+send_vsyslog_large (int options)
+{
+ int facility = LOG_USER;
+ int priority = LOG_INFO;
+
+ call_vsyslog (facility | priority, "%s %d %d", large_message, facility,
+ priority);
+}
+
+static bool
+check_syslog_message_large (const struct msg_t *msg, int msgnum, int options,
+ pid_t pid)
+{
+ TEST_COMPARE (msg->facility, LOG_USER);
+ TEST_COMPARE (msg->priority, LOG_INFO);
+ TEST_COMPARE_STRING (msg->msg, large_message);
+
+ return false;
+}
+
static void
send_openlog (int options)
{
@@ -179,6 +208,17 @@ send_openlog (int options)
closelog ();
}
+static void
+send_openlog_large (int options)
+{
+ /* Define a non-default IDENT and a not default facility. */
+ openlog (OPENLOG_IDENT, options, LOG_LOCAL0);
+
+ syslog (LOG_INFO, "%s %d %d", large_message, LOG_LOCAL0, LOG_INFO);
+
+ closelog ();
+}
+
static bool
check_openlog_message (const struct msg_t *msg, int msgnum,
int options, pid_t pid)
@@ -189,7 +229,7 @@ check_openlog_message (const struct msg_t *msg, int msgnum,
int expected_priority = priorities[msgnum % array_length (priorities)];
TEST_COMPARE (msg->priority, expected_priority);
- char expected_ident[ident_length];
+ char expected_ident[IDENT_LENGTH];
snprintf (expected_ident, sizeof (expected_ident), "%s%s%.0d%s:",
OPENLOG_IDENT,
options & LOG_PID ? "[" : "",
@@ -211,17 +251,43 @@ check_openlog_message (const struct msg_t *msg, int msgnum,
return true;
}
+static bool
+check_openlog_message_large (const struct msg_t *msg, int msgnum,
+ int options, pid_t pid)
+{
+ char expected_ident[IDENT_LENGTH];
+ snprintf (expected_ident, sizeof (expected_ident), "%s%s%.0d%s:",
+ OPENLOG_IDENT,
+ options & LOG_PID ? "[" : "",
+ options & LOG_PID ? pid : 0,
+ options & LOG_PID ? "]" : "");
+
+ TEST_COMPARE_STRING (msg->ident, expected_ident);
+ TEST_COMPARE_STRING (msg->msg, large_message);
+ TEST_COMPARE (msg->priority, LOG_INFO);
+ TEST_COMPARE (msg->facility, LOG_LOCAL0);
+
+ return false;
+}
+
static struct msg_t
parse_syslog_msg (const char *msg)
{
struct msg_t r = { .pid = -1 };
int number;
+ int wsb, wsa;
+
+#define STRINPUT(size) XSTRINPUT(size)
+#define XSTRINPUT(size) "%" # size "s"
/* The message in the form:
- <179>Apr 8 14:51:19 tst-syslog: syslog message 176 3 */
- int n = sscanf (msg, "<%3d>%*s %*d %*d:%*d:%*d %32s %64s %*d %*d",
- &number, r.ident, r.msg);
+ <179>Apr 8 14:51:19 tst-syslog: message 176 3 */
+ int n = sscanf (msg, "<%3d>%*s %*d %*d:%*d:%*d%n %n" STRINPUT(IDENT_LENGTH)
+ " " STRINPUT(MSG_LENGTH) " %*d %*d",
+ &number, &wsb, &wsa, r.ident, r.msg);
TEST_COMPARE (n, 3);
+ /* It should only one space between timestamp and message. */
+ TEST_COMPARE (wsa - wsb, 1);
r.facility = number & LOG_FACMASK;
r.priority = number & LOG_PRIMASK;
@@ -246,7 +312,7 @@ parse_syslog_console (const char *msg)
/* The message in the form:
openlog_ident: syslog_message 128 0 */
- int n = sscanf (msg, "%32s %64s %d %d",
+ int n = sscanf (msg, STRINPUT(IDENT_LENGTH) " " STRINPUT(MSG_LENGTH) " %d %d",
r.ident, r.msg, &facility, &priority);
TEST_COMPARE (n, 4);
@@ -281,7 +347,7 @@ check_syslog_udp (void (*syslog_send)(int), int options,
int msgnum = 0;
while (1)
{
- char buf[512];
+ char buf[2048];
size_t l = xrecvfrom (server_udp, buf, sizeof (buf), 0,
(struct sockaddr *) &addr, &addrlen);
buf[l] = '\0';
@@ -325,7 +391,7 @@ check_syslog_tcp (void (*syslog_send)(int), int options,
int client_tcp = xaccept (server_tcp, NULL, NULL);
- char buf[512], *rb = buf;
+ char buf[2048], *rb = buf;
size_t rbl = sizeof (buf);
size_t prl = 0; /* Track the size of the partial record. */
int msgnum = 0;
@@ -393,20 +459,34 @@ check_syslog_console_read (FILE *fp)
}
static void
-check_syslog_console (void)
+check_syslog_console_read_large (FILE *fp)
+{
+ char buf[2048];
+ TEST_VERIFY (fgets (buf, sizeof (buf), fp) != NULL);
+ struct msg_t msg = parse_syslog_console (buf);
+
+ TEST_COMPARE_STRING (msg.ident, OPENLOG_IDENT ":");
+ TEST_COMPARE_STRING (msg.msg, large_message);
+ TEST_COMPARE (msg.priority, LOG_INFO);
+ TEST_COMPARE (msg.facility, LOG_LOCAL0);
+}
+
+static void
+check_syslog_console (void (*syslog_send)(int),
+ void (*syslog_check)(FILE *fp))
{
xmkfifo (_PATH_CONSOLE, 0666);
pid_t sender_pid = xfork ();
if (sender_pid == 0)
{
- send_openlog (LOG_CONS);
+ syslog_send (LOG_CONS);
_exit (0);
}
{
FILE *fp = xfopen (_PATH_CONSOLE, "r+");
- check_syslog_console_read (fp);
+ syslog_check (fp);
xfclose (fp);
}
@@ -425,16 +505,28 @@ send_openlog_callback (void *clousure)
}
static void
-check_syslog_perror (void)
+send_openlog_callback_large (void *clousure)
+{
+ int options = *(int *) clousure;
+ send_openlog_large (options);
+}
+
+static void
+check_syslog_perror (bool large)
{
struct support_capture_subprocess result;
- result = support_capture_subprocess (send_openlog_callback,
+ result = support_capture_subprocess (large
+ ? send_openlog_callback_large
+ : send_openlog_callback,
&(int){LOG_PERROR});
FILE *mfp = fmemopen (result.err.buffer, result.err.length, "r");
if (mfp == NULL)
FAIL_EXIT1 ("fmemopen: %m");
- check_syslog_console_read (mfp);
+ if (large)
+ check_syslog_console_read_large (mfp);
+ else
+ check_syslog_console_read (mfp);
xfclose (mfp);
support_capture_subprocess_check (&result, "tst-openlog-child", 0,
@@ -462,10 +554,31 @@ do_test (void)
check_syslog_tcp (send_openlog, LOG_PID, check_openlog_message);
/* Check the LOG_CONS option. */
- check_syslog_console ();
+ check_syslog_console (send_openlog, check_syslog_console_read);
/* Check the LOG_PERROR option. */
- check_syslog_perror ();
+ check_syslog_perror (false);
+
+ /* Similar tests as before, but with a large message to trigger the
+ syslog path that uses dynamically allocated memory. */
+ memset (large_message, 'a', sizeof large_message - 1);
+ large_message[sizeof large_message - 1] = '\0';
+
+ check_syslog_udp (send_syslog_large, 0, check_syslog_message_large);
+ check_syslog_tcp (send_syslog_large, 0, check_syslog_message_large);
+
+ check_syslog_udp (send_vsyslog_large, 0, check_syslog_message_large);
+ check_syslog_tcp (send_vsyslog_large, 0, check_syslog_message_large);
+
+ check_syslog_udp (send_openlog_large, 0, check_openlog_message_large);
+ check_syslog_tcp (send_openlog_large, 0, check_openlog_message_large);
+
+ check_syslog_udp (send_openlog_large, LOG_PID, check_openlog_message_large);
+ check_syslog_tcp (send_openlog_large, LOG_PID, check_openlog_message_large);
+
+ check_syslog_console (send_openlog_large, check_syslog_console_read_large);
+
+ check_syslog_perror (true);
return 0;
}
diff --git a/nscd/aicache.c b/nscd/aicache.c
index 51e793199f..e0baed170b 100644
--- a/nscd/aicache.c
+++ b/nscd/aicache.c
@@ -110,11 +110,10 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
"gethostbyname4_r");
if (fct4 != NULL)
{
- struct gaih_addrtuple atmem;
struct gaih_addrtuple *at;
while (1)
{
- at = &atmem;
+ at = NULL;
rc6 = 0;
herrno = 0;
status[1] = DL_CALL_FCT (fct4, (key, &at,
@@ -137,7 +136,7 @@ addhstaiX (struct database_dyn *db, int fd, request_header *req,
goto next_nip;
/* We found the data. Count the addresses and the size. */
- for (const struct gaih_addrtuple *at2 = at = &atmem; at2 != NULL;
+ for (const struct gaih_addrtuple *at2 = at; at2 != NULL;
at2 = at2->next)
{
++naddrs;
diff --git a/nscd/connections.c b/nscd/connections.c
index 61d1674eb4..531d2e83df 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -2284,7 +2284,8 @@ main_loop_epoll (int efd)
sizeof (buf))) != -1)
;
- __bump_nl_timestamp ();
+ dbs[hstdb].head->extra_data[NSCD_HST_IDX_CONF_TIMESTAMP]
+ = __bump_nl_timestamp ();
}
# endif
else
diff --git a/nss/getent.c b/nss/getent.c
index 8178b4b470..d2d2524b0c 100644
--- a/nss/getent.c
+++ b/nss/getent.c
@@ -58,6 +58,8 @@ static const struct argp_option args_options[] =
{
{ "service", 's', N_("CONFIG"), 0, N_("Service configuration to be used") },
{ "no-idn", 'i', NULL, 0, N_("disable IDN encoding") },
+ { "no-addrconfig", 'A', NULL, 0,
+ N_("do not filter out unsupported IPv4/IPv6 addresses (with ahosts*)") },
{ NULL, 0, NULL, 0, NULL },
};
@@ -79,6 +81,9 @@ static struct argp argp =
/* Additional getaddrinfo flags for IDN encoding. */
static int idn_flags = AI_IDN | AI_CANONIDN;
+/* Set to 0 by --no-addrconfig. */
+static int addrconfig_flags = AI_ADDRCONFIG;
+
/* Print the version information. */
static void
print_version (FILE *stream, struct argp_state *state)
@@ -346,7 +351,7 @@ ahosts_keys_int (int af, int xflags, int number, char *key[])
struct addrinfo hint;
memset (&hint, '\0', sizeof (hint));
- hint.ai_flags = (AI_V4MAPPED | AI_ADDRCONFIG | AI_CANONNAME
+ hint.ai_flags = (AI_V4MAPPED | addrconfig_flags | AI_CANONNAME
| idn_flags | xflags);
hint.ai_family = af;
@@ -905,6 +910,10 @@ parse_option (int key, char *arg, struct argp_state *state)
idn_flags = 0;
break;
+ case 'A':
+ addrconfig_flags = 0;
+ break;
+
default:
return ARGP_ERR_UNKNOWN;
}
diff --git a/nss/tst-nss-files-hosts-long.c b/nss/tst-nss-files-hosts-long.c
index 3942cf5fca..a7697e3143 100644
--- a/nss/tst-nss-files-hosts-long.c
+++ b/nss/tst-nss-files-hosts-long.c
@@ -28,14 +28,15 @@ do_test (void)
{
int ret;
- /* Run getent to fetch the IPv4 address for host test4.
- This forces /etc/hosts to be parsed. */
- ret = system("getent ahostsv4 test4");
+ /* Run getent to fetch the IPv4 address for host test4. This forces
+ /etc/hosts to be parsed. Use --no-addrconfig to return addresses
+ even in an IPv6-only environment. */
+ ret = system("getent --no-addrconfig ahostsv4 test4");
if (ret != 0)
FAIL_EXIT1("ahostsv4 failed");
/* Likewise for IPv6. */
- ret = system("getent ahostsv6 test6");
+ ret = system("getent --no-addrconfig ahostsv6 test6");
if (ret != 0)
FAIL_EXIT1("ahostsv6 failed");
diff --git a/nss/tst-reload1.c b/nss/tst-reload1.c
index fdc5bdd65b..bc32bb132a 100644
--- a/nss/tst-reload1.c
+++ b/nss/tst-reload1.c
@@ -43,12 +43,12 @@ static struct passwd pwd_table_1[] = {
static const char *hostaddr_5[] =
{
- "ABCD", "abcd", "1234", NULL
+ "ABCd", "ABCD", "ABC4", NULL
};
static const char *hostaddr_15[] =
{
- "4321", "ghij", NULL
+ "4321", "4322", NULL
};
static const char *hostaddr_25[] =
@@ -86,12 +86,12 @@ static const char *hostaddr_6[] =
static const char *hostaddr_16[] =
{
- "7890", "a1b2", NULL
+ "7890", "7891", NULL
};
static const char *hostaddr_26[] =
{
- "qwer", "tyui", NULL
+ "qwer", "qweR", NULL
};
static struct hostent host_table_2[] = {
diff --git a/resolv/Makefile b/resolv/Makefile
index 5b15321f9b..f8a92c6cff 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -40,12 +40,16 @@ routines := \
inet_pton \
ns_makecanon \
ns_name_compress \
+ ns_name_length_uncompressed \
ns_name_ntop \
ns_name_pack \
ns_name_pton \
ns_name_skip \
ns_name_uncompress \
ns_name_unpack \
+ ns_rr_cursor_init \
+ ns_rr_cursor_next \
+ ns_samebinaryname \
ns_samename \
nsap_addr \
nss_dns_functions \
@@ -89,9 +93,12 @@ tests += \
tst-ns_name_pton \
tst-res_hconf_reorder \
tst-res_hnok \
+ tst-resolv-aliases \
tst-resolv-basic \
tst-resolv-binary \
+ tst-resolv-byaddr \
tst-resolv-edns \
+ tst-resolv-invalid-cname \
tst-resolv-network \
tst-resolv-noaaaa \
tst-resolv-nondecimal \
@@ -104,6 +111,18 @@ tests += \
tests-internal += tst-resolv-txnid-collision
tests-static += tst-resolv-txnid-collision
+# Likewise for __ns_samebinaryname.
+tests-internal += tst-ns_samebinaryname
+tests-static += tst-ns_samebinaryname
+
+# Likewise for __ns_name_length_uncompressed.
+tests-internal += tst-ns_name_length_uncompressed
+tests-static += tst-ns_name_length_uncompressed
+
+# Likewise for struct ns_rr_cursor and its functions.
+tests-internal += tst-ns_rr_cursor
+tests-static += tst-ns_rr_cursor
+
# These tests need libdl.
ifeq (yes,$(build-shared))
tests += \
@@ -258,8 +277,10 @@ $(objpfx)tst-resolv-ai_idn.out: $(gen-locales)
$(objpfx)tst-resolv-ai_idn-latin1.out: $(gen-locales)
$(objpfx)tst-resolv-ai_idn-nolibidn2.out: \
$(gen-locales) $(objpfx)tst-no-libidn2.so
+$(objpfx)tst-resolv-aliases: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-basic: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-binary: $(objpfx)libresolv.so $(shared-thread-library)
+$(objpfx)tst-resolv-byaddr: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-edns: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-network: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-res_init: $(objpfx)libresolv.so
@@ -267,6 +288,8 @@ $(objpfx)tst-resolv-res_init-multi: $(objpfx)libresolv.so \
$(shared-thread-library)
$(objpfx)tst-resolv-res_init-thread: $(objpfx)libresolv.so \
$(shared-thread-library)
+$(objpfx)tst-resolv-invalid-cname: $(objpfx)libresolv.so \
+ $(shared-thread-library)
$(objpfx)tst-resolv-noaaaa: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-nondecimal: $(objpfx)libresolv.so $(shared-thread-library)
$(objpfx)tst-resolv-qtypes: $(objpfx)libresolv.so $(shared-thread-library)
diff --git a/resolv/README b/resolv/README
index 514e9bb617..2146bc3b27 100644
--- a/resolv/README
+++ b/resolv/README
@@ -146,6 +146,3 @@ res_libc.c is home-brewn, although parts of it are taken from res_data.c.
res_hconf.c and res_hconf.h were contributed by David Mosberger, and
do not come from BIND.
-
-The files gethnamaddr.c, mapv4v6addr.h and mapv4v6hostent.h are
-leftovers from BIND 4.9.7.
diff --git a/resolv/mapv4v6addr.h b/resolv/mapv4v6addr.h
deleted file mode 100644
index 7f85f7d5e3..0000000000
--- a/resolv/mapv4v6addr.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#include <string.h>
-#include <arpa/nameser.h>
-
-static void
-map_v4v6_address (const char *src, char *dst)
-{
- u_char *p = (u_char *) dst;
- int i;
-
- /* Move the IPv4 part to the right position. */
- memcpy (dst + 12, src, INADDRSZ);
-
- /* Mark this ipv6 addr as a mapped ipv4. */
- for (i = 0; i < 10; i++)
- *p++ = 0x00;
- *p++ = 0xff;
- *p = 0xff;
-}
diff --git a/resolv/mapv4v6hostent.h b/resolv/mapv4v6hostent.h
deleted file mode 100644
index c11038adf3..0000000000
--- a/resolv/mapv4v6hostent.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#include <arpa/nameser.h>
-#include <sys/socket.h>
-
-typedef union {
- int32_t al;
- char ac;
-} align;
-
-static int
-map_v4v6_hostent (struct hostent *hp, char **bpp, int *lenp)
-{
- char **ap;
-
- if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)
- return 0;
- hp->h_addrtype = AF_INET6;
- hp->h_length = IN6ADDRSZ;
- for (ap = hp->h_addr_list; *ap; ap++)
- {
- int i = sizeof (align) - ((u_long) *bpp % sizeof (align));
-
- if (*lenp < (i + IN6ADDRSZ))
- /* Out of memory. */
- return 1;
- *bpp += i;
- *lenp -= i;
- map_v4v6_address (*ap, *bpp);
- *ap = *bpp;
- *bpp += IN6ADDRSZ;
- *lenp -= IN6ADDRSZ;
- }
- return 0;
-}
diff --git a/resolv/ns_name_length_uncompressed.c b/resolv/ns_name_length_uncompressed.c
new file mode 100644
index 0000000000..51296b47ef
--- /dev/null
+++ b/resolv/ns_name_length_uncompressed.c
@@ -0,0 +1,72 @@
+/* Skip over an uncompressed name in wire format.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <errno.h>
+#include <stdbool.h>
+
+int
+__ns_name_length_uncompressed (const unsigned char *p,
+ const unsigned char *eom)
+{
+ const unsigned char *start = p;
+
+ while (true)
+ {
+ if (p == eom)
+ {
+ /* Truncated packet: no room for label length. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+
+ unsigned char b = *p;
+ ++p;
+ if (b == 0)
+ {
+ /* Root label. */
+ size_t length = p - start;
+ if (length > NS_MAXCDNAME)
+ {
+ /* Domain name too long. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+ return length;
+ }
+
+ if (b <= 63)
+ {
+ /* Regular label. */
+ if (b <= eom - p)
+ p += b;
+ else
+ {
+ /* Truncated packet: label incomplete. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+ }
+ else
+ {
+ /* Compression reference or corrupted label length. */
+ __set_errno (EMSGSIZE);
+ return -1;
+ }
+ }
+}
diff --git a/resolv/ns_rr_cursor_init.c b/resolv/ns_rr_cursor_init.c
new file mode 100644
index 0000000000..6ee80b30e9
--- /dev/null
+++ b/resolv/ns_rr_cursor_init.c
@@ -0,0 +1,62 @@
+/* Initialize a simple DNS packet parser.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <string.h>
+
+bool
+__ns_rr_cursor_init (struct ns_rr_cursor *c,
+ const unsigned char *buf, size_t len)
+{
+ c->begin = buf;
+ c->end = buf + len;
+
+ /* Check for header size and 16-bit question count value (it must be 1). */
+ if (len < 12 || buf[4] != 0 || buf[5] != 1)
+ {
+ __set_errno (EMSGSIZE);
+ c->current = c->end;
+ return false;
+ }
+ c->current = buf + 12;
+
+ int consumed = __ns_name_length_uncompressed (c->current, c->end);
+ if (consumed < 0)
+ {
+ __set_errno (EMSGSIZE);
+ c->current = c->end;
+ c->first_rr = NULL;
+ return false;
+ }
+ c->current += consumed;
+
+ /* Ensure there is room for question type and class. */
+ if (c->end - c->current < 4)
+ {
+ __set_errno (EMSGSIZE);
+ c->current = c->end;
+ c->first_rr = NULL;
+ return false;
+ }
+ c->current += 4;
+ c->first_rr = c->current;
+
+ return true;
+}
diff --git a/resolv/ns_rr_cursor_next.c b/resolv/ns_rr_cursor_next.c
new file mode 100644
index 0000000000..33652fc5da
--- /dev/null
+++ b/resolv/ns_rr_cursor_next.c
@@ -0,0 +1,74 @@
+/* Simple DNS record parser without textual name decoding.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <string.h>
+
+bool
+__ns_rr_cursor_next (struct ns_rr_cursor *c, struct ns_rr_wire *rr)
+{
+ rr->rdata = NULL;
+
+ /* Extract the record owner name. */
+ int consumed = __ns_name_unpack (c->begin, c->end, c->current,
+ rr->rname, sizeof (rr->rname));
+ if (consumed < 0)
+ {
+ memset (rr, 0, sizeof (*rr));
+ __set_errno (EMSGSIZE);
+ return false;
+ }
+ c->current += consumed;
+
+ /* Extract the metadata. */
+ struct
+ {
+ uint16_t rtype;
+ uint16_t rclass;
+ uint32_t ttl;
+ uint16_t rdlength;
+ } __attribute__ ((packed)) metadata;
+ _Static_assert (sizeof (metadata) == 10, "sizeof metadata");
+ if (c->end - c->current < sizeof (metadata))
+ {
+ memset (rr, 0, sizeof (*rr));
+ __set_errno (EMSGSIZE);
+ return false;
+ }
+ memcpy (&metadata, c->current, sizeof (metadata));
+ c->current += sizeof (metadata);
+ /* Endianess conversion. */
+ rr->rtype = ntohs (metadata.rtype);
+ rr->rclass = ntohs (metadata.rclass);
+ rr->ttl = ntohl (metadata.ttl);
+ rr->rdlength = ntohs (metadata.rdlength);
+
+ /* Extract record data. */
+ if (c->end - c->current < rr->rdlength)
+ {
+ memset (rr, 0, sizeof (*rr));
+ __set_errno (EMSGSIZE);
+ return false;
+ }
+ rr->rdata = c->current;
+ c->current += rr->rdlength;
+
+ return true;
+}
diff --git a/resolv/ns_samebinaryname.c b/resolv/ns_samebinaryname.c
new file mode 100644
index 0000000000..9a47d8e97a
--- /dev/null
+++ b/resolv/ns_samebinaryname.c
@@ -0,0 +1,55 @@
+/* Compare two binary domain names for quality.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <stdbool.h>
+
+/* Convert ASCII letters to upper case. */
+static inline int
+ascii_toupper (unsigned char ch)
+{
+ if (ch >= 'a' && ch <= 'z')
+ return ch - 'a' + 'A';
+ else
+ return ch;
+}
+
+bool
+__ns_samebinaryname (const unsigned char *a, const unsigned char *b)
+{
+ while (*a != 0 && *b != 0)
+ {
+ if (*a != *b)
+ /* Different label length. */
+ return false;
+ int labellen = *a;
+ ++a;
+ ++b;
+ for (int i = 0; i < labellen; ++i)
+ {
+ if (*a != *b && ascii_toupper (*a) != ascii_toupper (*b))
+ /* Different character in label. */
+ return false;
+ ++a;
+ ++b;
+ }
+ }
+
+ /* Match if both names are at the root label. */
+ return *a == 0 && *b == 0;
+}
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 544cffbecd..9fa81f23c8 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -69,6 +69,7 @@
* --Copyright--
*/
+#include <alloc_buffer.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
@@ -86,10 +87,6 @@
#include <resolv/resolv-internal.h>
#include <resolv/resolv_context.h>
-/* Get implementations of some internal functions. */
-#include <resolv/mapv4v6addr.h>
-#include <resolv/mapv4v6hostent.h>
-
#define RESOLVSORT
#if PACKETSZ > 65536
@@ -103,32 +100,36 @@
#endif
#define MAXHOSTNAMELEN 256
-/* We need this time later. */
-typedef union querybuf
-{
- HEADER hdr;
- u_char buf[MAXPACKET];
-} querybuf;
-
-static enum nss_status getanswer_r (struct resolv_context *ctx,
- const querybuf *answer, int anslen,
- const char *qname, int qtype,
- struct hostent *result, char *buffer,
- size_t buflen, int *errnop, int *h_errnop,
- int map, int32_t *ttlp, char **canonp);
-
-static enum nss_status gaih_getanswer (const querybuf *answer1, int anslen1,
- const querybuf *answer2, int anslen2,
- const char *qname,
+/* For historic reasons, pointers to IP addresses are char *, so use a
+ single list type for addresses and host names. */
+#define DYNARRAY_STRUCT ptrlist
+#define DYNARRAY_ELEMENT char *
+#define DYNARRAY_PREFIX ptrlist_
+#include <malloc/dynarray-skeleton.c>
+
+static enum nss_status getanswer_r (unsigned char *packet, size_t packetlen,
+ uint16_t qtype, struct alloc_buffer *abuf,
+ struct ptrlist *addresses,
+ struct ptrlist *aliases,
+ int *errnop, int *h_errnop, int32_t *ttlp);
+static void addrsort (struct resolv_context *ctx, char **ap, int num);
+static enum nss_status getanswer_ptr (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf,
+ char **hnamep, int *errnop,
+ int *h_errnop, int32_t *ttlp);
+
+static enum nss_status gaih_getanswer (unsigned char *packet1,
+ size_t packet1len,
+ unsigned char *packet2,
+ size_t packet2len,
+ struct alloc_buffer *abuf,
struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
int *errnop, int *h_errnop,
int32_t *ttlp);
-static enum nss_status gaih_getanswer_noaaaa (const querybuf *answer1,
- int anslen1,
- const char *qname,
+static enum nss_status gaih_getanswer_noaaaa (unsigned char *packet,
+ size_t packetlen,
+ struct alloc_buffer *abuf,
struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
int *errnop, int *h_errnop,
int32_t *ttlp);
@@ -183,16 +184,9 @@ gethostbyname3_context (struct resolv_context *ctx,
char *buffer, size_t buflen, int *errnop,
int *h_errnop, int32_t *ttlp, char **canonp)
{
- union
- {
- querybuf *buf;
- u_char *ptr;
- } host_buffer;
- querybuf *orig_host_buffer;
char tmp[NS_MAXDNAME];
int size, type, n;
const char *cp;
- int map = 0;
int olderr = errno;
enum nss_status status;
@@ -223,10 +217,12 @@ gethostbyname3_context (struct resolv_context *ctx,
&& (cp = __res_context_hostalias (ctx, name, tmp, sizeof (tmp))) != NULL)
name = cp;
- host_buffer.buf = orig_host_buffer = (querybuf *) alloca (1024);
+ unsigned char dns_packet_buffer[1024];
+ unsigned char *alt_dns_packet_buffer = dns_packet_buffer;
- n = __res_context_search (ctx, name, C_IN, type, host_buffer.buf->buf,
- 1024, &host_buffer.ptr, NULL, NULL, NULL, NULL);
+ n = __res_context_search (ctx, name, C_IN, type,
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ &alt_dns_packet_buffer, NULL, NULL, NULL, NULL);
if (n < 0)
{
switch (errno)
@@ -253,34 +249,79 @@ gethostbyname3_context (struct resolv_context *ctx,
*errnop = EAGAIN;
else
__set_errno (olderr);
+ }
+ else
+ {
+ struct alloc_buffer abuf = alloc_buffer_create (buffer, buflen);
- /* If we are looking for an IPv6 address and mapping is enabled
- by having the RES_USE_INET6 bit in _res.options set, we try
- another lookup. */
- if (af == AF_INET6 && res_use_inet6 ())
- n = __res_context_search (ctx, name, C_IN, T_A, host_buffer.buf->buf,
- host_buffer.buf != orig_host_buffer
- ? MAXPACKET : 1024, &host_buffer.ptr,
- NULL, NULL, NULL, NULL);
+ struct ptrlist addresses;
+ ptrlist_init (&addresses);
+ struct ptrlist aliases;
+ ptrlist_init (&aliases);
- if (n < 0)
+ status = getanswer_r (alt_dns_packet_buffer, n, type,
+ &abuf, &addresses, &aliases,
+ errnop, h_errnop, ttlp);
+ if (status == NSS_STATUS_SUCCESS)
{
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
- return status;
- }
+ if (ptrlist_has_failed (&addresses)
+ || ptrlist_has_failed (&aliases))
+ {
+ /* malloc failure. Do not retry using the ERANGE protocol. */
+ *errnop = ENOMEM;
+ *h_errnop = NETDB_INTERNAL;
+ status = NSS_STATUS_UNAVAIL;
+ }
- map = 1;
+ /* Reserve the address and alias arrays in the result
+ buffer. Both are NULL-terminated, but the first element
+ of the alias array is stored in h_name, so no extra space
+ for the NULL terminator is needed there. */
+ result->h_addr_list
+ = alloc_buffer_alloc_array (&abuf, char *,
+ ptrlist_size (&addresses) + 1);
+ result->h_aliases
+ = alloc_buffer_alloc_array (&abuf, char *,
+ ptrlist_size (&aliases));
+ if (alloc_buffer_has_failed (&abuf))
+ {
+ /* Retry using the ERANGE protocol. */
+ *errnop = ERANGE;
+ *h_errnop = NETDB_INTERNAL;
+ status = NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ /* Copy the address list and NULL-terminate it. */
+ memcpy (result->h_addr_list, ptrlist_begin (&addresses),
+ ptrlist_size (&addresses) * sizeof (char *));
+ result->h_addr_list[ptrlist_size (&addresses)] = NULL;
+
+ /* Sort the address list if requested. */
+ if (type == T_A && __resolv_context_sort_count (ctx) > 0)
+ addrsort (ctx, result->h_addr_list, ptrlist_size (&addresses));
- result->h_addrtype = AF_INET;
- result->h_length = INADDRSZ;
+ /* Copy the aliases, excluding the last one. */
+ memcpy (result->h_aliases, ptrlist_begin (&aliases),
+ (ptrlist_size (&aliases) - 1) * sizeof (char *));
+ result->h_aliases[ptrlist_size (&aliases) - 1] = NULL;
+
+ /* The last alias goes into h_name. */
+ assert (ptrlist_size (&aliases) >= 1);
+ result->h_name = ptrlist_end (&aliases)[-1];
+
+ /* This is also the canonical name. */
+ if (canonp != NULL)
+ *canonp = result->h_name;
+ }
+ }
+
+ ptrlist_free (&aliases);
+ ptrlist_free (&addresses);
}
- status = getanswer_r
- (ctx, host_buffer.buf, n, name, type, result, buffer, buflen,
- errnop, h_errnop, map, ttlp, canonp);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
return status;
}
@@ -324,13 +365,8 @@ _nss_dns_gethostbyname_r (const char *name, struct hostent *result,
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_UNAVAIL;
}
- status = NSS_STATUS_NOTFOUND;
- if (res_use_inet6 ())
- status = gethostbyname3_context (ctx, name, AF_INET6, result, buffer,
- buflen, errnop, h_errnop, NULL, NULL);
- if (status == NSS_STATUS_NOTFOUND)
- status = gethostbyname3_context (ctx, name, AF_INET, result, buffer,
- buflen, errnop, h_errnop, NULL, NULL);
+ status = gethostbyname3_context (ctx, name, AF_INET, result, buffer,
+ buflen, errnop, h_errnop, NULL, NULL);
__resolv_context_put (ctx);
return status;
}
@@ -365,17 +401,13 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
name = cp;
}
- union
- {
- querybuf *buf;
- u_char *ptr;
- } host_buffer;
- querybuf *orig_host_buffer;
- host_buffer.buf = orig_host_buffer = (querybuf *) alloca (2048);
+ unsigned char dns_packet_buffer[2048];
+ unsigned char *alt_dns_packet_buffer = dns_packet_buffer;
u_char *ans2p = NULL;
int nans2p = 0;
int resplen2 = 0;
int ans2p_malloced = 0;
+ struct alloc_buffer abuf = alloc_buffer_create (buffer, buflen);
int olderr = errno;
@@ -384,22 +416,21 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
if ((ctx->resp->options & RES_NOAAAA) == 0)
{
n = __res_context_search (ctx, name, C_IN, T_QUERY_A_AND_AAAA,
- host_buffer.buf->buf, 2048, &host_buffer.ptr,
- &ans2p, &nans2p, &resplen2, &ans2p_malloced);
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ &alt_dns_packet_buffer, &ans2p, &nans2p,
+ &resplen2, &ans2p_malloced);
if (n >= 0)
- status = gaih_getanswer (host_buffer.buf, n, (const querybuf *) ans2p,
- resplen2, name, pat, buffer, buflen,
- errnop, herrnop, ttlp);
+ status = gaih_getanswer (alt_dns_packet_buffer, n, ans2p, resplen2,
+ &abuf, pat, errnop, herrnop, ttlp);
}
else
{
n = __res_context_search (ctx, name, C_IN, T_A,
- host_buffer.buf->buf, 2048, NULL,
- NULL, NULL, NULL, NULL);
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ NULL, NULL, NULL, NULL, NULL);
if (n >= 0)
- status = gaih_getanswer_noaaaa (host_buffer.buf, n,
- name, pat, buffer, buflen,
- errnop, herrnop, ttlp);
+ status = gaih_getanswer_noaaaa (alt_dns_packet_buffer, n,
+ &abuf, pat, errnop, herrnop, ttlp);
}
if (n < 0)
{
@@ -430,12 +461,20 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
__set_errno (olderr);
}
+ /* Implement the buffer resizing protocol. */
+ if (alloc_buffer_has_failed (&abuf))
+ {
+ *errnop = ERANGE;
+ *herrnop = NETDB_INTERNAL;
+ status = NSS_STATUS_TRYAGAIN;
+ }
+
/* Check whether ans2p was separately allocated. */
if (ans2p_malloced)
free (ans2p);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
__resolv_context_put (ctx);
return status;
@@ -451,36 +490,21 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 };
static const u_char v6local[] = { 0,0, 0,1 };
const u_char *uaddr = (const u_char *)addr;
- struct host_data
- {
- char *aliases[MAX_NR_ALIASES];
- unsigned char host_addr[16]; /* IPv4 or IPv6 */
- char *h_addr_ptrs[MAX_NR_ADDRS + 1];
- char linebuffer[0];
- } *host_data = (struct host_data *) buffer;
- union
- {
- querybuf *buf;
- u_char *ptr;
- } host_buffer;
- querybuf *orig_host_buffer;
char qbuf[MAXDNAME+1], *qp = NULL;
size_t size;
int n, status;
int olderr = errno;
- uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
- buffer += pad;
- buflen = buflen > pad ? buflen - pad : 0;
-
- if (__glibc_unlikely (buflen < sizeof (struct host_data)))
- {
- *errnop = ERANGE;
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
- }
-
- host_data = (struct host_data *) buffer;
+ /* Prepare the allocation buffer. Store the pointer array first, to
+ benefit from buffer alignment. */
+ struct alloc_buffer abuf = alloc_buffer_create (buffer, buflen);
+ char **address_array = alloc_buffer_alloc_array (&abuf, char *, 2);
+ if (address_array == NULL)
+ {
+ *errnop = ERANGE;
+ *h_errnop = NETDB_INTERNAL;
+ return NSS_STATUS_TRYAGAIN;
+ }
struct resolv_context *ctx = __resolv_context_get ();
if (ctx == NULL)
@@ -524,8 +548,6 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
return NSS_STATUS_UNAVAIL;
}
- host_buffer.buf = orig_host_buffer = (querybuf *) alloca (1024);
-
switch (af)
{
case AF_INET:
@@ -549,36 +571,52 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
break;
}
- n = __res_context_query (ctx, qbuf, C_IN, T_PTR, host_buffer.buf->buf,
- 1024, &host_buffer.ptr, NULL, NULL, NULL, NULL);
+ unsigned char dns_packet_buffer[1024];
+ unsigned char *alt_dns_packet_buffer = dns_packet_buffer;
+ n = __res_context_query (ctx, qbuf, C_IN, T_PTR,
+ dns_packet_buffer, sizeof (dns_packet_buffer),
+ &alt_dns_packet_buffer,
+ NULL, NULL, NULL, NULL);
if (n < 0)
{
*h_errnop = h_errno;
__set_errno (olderr);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
__resolv_context_put (ctx);
return errno == ECONNREFUSED ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
}
- status = getanswer_r
- (ctx, host_buffer.buf, n, qbuf, T_PTR, result, buffer, buflen,
- errnop, h_errnop, 0 /* XXX */, ttlp, NULL);
- if (host_buffer.buf != orig_host_buffer)
- free (host_buffer.buf);
+ status = getanswer_ptr (alt_dns_packet_buffer, n,
+ &abuf, &result->h_name, errnop, h_errnop, ttlp);
+
+ if (alt_dns_packet_buffer != dns_packet_buffer)
+ free (alt_dns_packet_buffer);
+ __resolv_context_put (ctx);
+
if (status != NSS_STATUS_SUCCESS)
- {
- __resolv_context_put (ctx);
- return status;
- }
+ return status;
+ /* result->h_name has already been set by getanswer_ptr. */
result->h_addrtype = af;
result->h_length = len;
- memcpy (host_data->host_addr, addr, len);
- host_data->h_addr_ptrs[0] = (char *) host_data->host_addr;
- host_data->h_addr_ptrs[1] = NULL;
+ /* Increase the alignment to 4, in case there are applications out
+ there that expect at least this level of address alignment. */
+ address_array[0] = (char *) alloc_buffer_next (&abuf, uint32_t);
+ alloc_buffer_copy_bytes (&abuf, uaddr, len);
+ address_array[1] = NULL;
+
+ /* This check also covers allocation failure in getanswer_ptr. */
+ if (alloc_buffer_has_failed (&abuf))
+ {
+ *errnop = ERANGE;
+ *h_errnop = NETDB_INTERNAL;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ result->h_addr_list = address_array;
+ result->h_aliases = &address_array[1]; /* Points to NULL. */
+
*h_errnop = NETDB_SUCCESS;
- __resolv_context_put (ctx);
return NSS_STATUS_SUCCESS;
}
libc_hidden_def (_nss_dns_gethostbyaddr2_r)
@@ -640,650 +678,362 @@ addrsort (struct resolv_context *ctx, char **ap, int num)
break;
}
-static enum nss_status
-getanswer_r (struct resolv_context *ctx,
- const querybuf *answer, int anslen, const char *qname, int qtype,
- struct hostent *result, char *buffer, size_t buflen,
- int *errnop, int *h_errnop, int map, int32_t *ttlp, char **canonp)
+/* Convert the uncompressed, binary domain name CDNAME into its
+ textual representation and add it to the end of ALIASES, allocating
+ space for a copy of the name from ABUF. Skip adding the name if it
+ is not a valid host name, and return false in that case, otherwise
+ true. */
+static bool
+getanswer_r_store_alias (const unsigned char *cdname,
+ struct alloc_buffer *abuf,
+ struct ptrlist *aliases)
{
- struct host_data
- {
- char *aliases[MAX_NR_ALIASES];
- unsigned char host_addr[16]; /* IPv4 or IPv6 */
- char *h_addr_ptrs[0];
- } *host_data;
- int linebuflen;
- const HEADER *hp;
- const u_char *end_of_message, *cp;
- int n, ancount, qdcount;
- int haveanswer, had_error;
- char *bp, **ap, **hap;
- char tbuf[MAXDNAME];
- const char *tname;
- int (*name_ok) (const char *);
- u_char packtmp[NS_MAXCDNAME];
- int have_to_map = 0;
- uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
- buffer += pad;
- buflen = buflen > pad ? buflen - pad : 0;
- if (__glibc_unlikely (buflen < sizeof (struct host_data)))
- {
- /* The buffer is too small. */
- too_small:
- *errnop = ERANGE;
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
- }
- host_data = (struct host_data *) buffer;
- linebuflen = buflen - sizeof (struct host_data);
- if (buflen - sizeof (struct host_data) != linebuflen)
- linebuflen = INT_MAX;
-
- tname = qname;
- result->h_name = NULL;
- end_of_message = answer->buf + anslen;
- switch (qtype)
- {
- case T_A:
- case T_AAAA:
- name_ok = __libc_res_hnok;
- break;
- case T_PTR:
- name_ok = __libc_res_dnok;
- break;
- default:
- *errnop = ENOENT;
- return NSS_STATUS_UNAVAIL; /* XXX should be abort(); */
- }
+ /* Filter out domain names that are not host names. */
+ if (!__res_binary_hnok (cdname))
+ return false;
+
+ /* Note: Not NS_MAXCDNAME, so that __ns_name_ntop implicitly checks
+ for length. */
+ char dname[MAXHOSTNAMELEN + 1];
+ if (__ns_name_ntop (cdname, dname, sizeof (dname)) < 0)
+ return false;
+ /* Do not report an error on allocation failure, instead store NULL
+ or do nothing. getanswer_r's caller will see NSS_STATUS_SUCCESS
+ and detect the memory allocation failure or buffer space
+ exhaustion, and report it accordingly. */
+ ptrlist_add (aliases, alloc_buffer_copy_string (abuf, dname));
+ return true;
+}
- /*
- * find first satisfactory answer
- */
- hp = &answer->hdr;
- ancount = ntohs (hp->ancount);
- qdcount = ntohs (hp->qdcount);
- cp = answer->buf + HFIXEDSZ;
- if (__glibc_unlikely (qdcount != 1))
+static enum nss_status __attribute__ ((noinline))
+getanswer_r (unsigned char *packet, size_t packetlen, uint16_t qtype,
+ struct alloc_buffer *abuf,
+ struct ptrlist *addresses, struct ptrlist *aliases,
+ int *errnop, int *h_errnop, int32_t *ttlp)
+{
+ struct ns_rr_cursor c;
+ if (!__ns_rr_cursor_init (&c, packet, packetlen))
{
+ /* This should not happen because __res_context_query already
+ perfroms response validation. */
*h_errnop = NO_RECOVERY;
return NSS_STATUS_UNAVAIL;
}
- if (sizeof (struct host_data) + (ancount + 1) * sizeof (char *) >= buflen)
- goto too_small;
- bp = (char *) &host_data->h_addr_ptrs[ancount + 1];
- linebuflen -= (ancount + 1) * sizeof (char *);
-
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0))
+ /* Treat the QNAME just like an alias. Error out if it is not a
+ valid host name. */
+ if (ns_rr_cursor_rcode (&c) == NXDOMAIN
+ || !getanswer_r_store_alias (ns_rr_cursor_qname (&c), abuf, aliases))
{
- *errnop = errno;
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
- if (__glibc_unlikely (name_ok (bp) == 0))
- {
- errno = EBADMSG;
- *errnop = EBADMSG;
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
+ if (ttlp != NULL)
+ /* No negative caching. */
+ *ttlp = 0;
+ *h_errnop = HOST_NOT_FOUND;
+ *errnop = ENOENT;
+ return NSS_STATUS_NOTFOUND;
}
- cp += n + QFIXEDSZ;
- if (qtype == T_A || qtype == T_AAAA)
+ int ancount = ns_rr_cursor_ancount (&c);
+ const unsigned char *expected_name = ns_rr_cursor_qname (&c);
+ /* expected_name may be updated to point into this buffer. */
+ unsigned char name_buffer[NS_MAXCDNAME];
+
+ for (; ancount > 0; --ancount)
{
- /* res_send() has already verified that the query name is the
- * same as the one we sent; this just gets the expanded name
- * (i.e., with the succeeding search-domain tacked on).
- */
- n = strlen (bp) + 1; /* for the \0 */
- if (n >= MAXHOSTNAMELEN)
+ struct ns_rr_wire rr;
+ if (!__ns_rr_cursor_next (&c, &rr))
{
*h_errnop = NO_RECOVERY;
- *errnop = ENOENT;
- return NSS_STATUS_TRYAGAIN;
+ return NSS_STATUS_UNAVAIL;
}
- result->h_name = bp;
- bp += n;
- linebuflen -= n;
- if (linebuflen < 0)
- goto too_small;
- /* The qname can be abbreviated, but h_name is now absolute. */
- qname = result->h_name;
- }
- ap = host_data->aliases;
- *ap = NULL;
- result->h_aliases = host_data->aliases;
- hap = host_data->h_addr_ptrs;
- *hap = NULL;
- result->h_addr_list = host_data->h_addr_ptrs;
- haveanswer = 0;
- had_error = 0;
+ /* Skip over records with the wrong class. */
+ if (rr.rclass != C_IN)
+ continue;
- while (ancount-- > 0 && cp < end_of_message && had_error == 0)
- {
- int type, class;
+ /* Update TTL for recognized record types. */
+ if ((rr.rtype == T_CNAME || rr.rtype == qtype)
+ && ttlp != NULL && *ttlp > rr.ttl)
+ *ttlp = rr.ttl;
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
+ if (rr.rtype == T_CNAME)
{
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
+ /* NB: No check for owner name match, based on historic
+ precedent. Record the CNAME target as the new expected
+ name. */
+ int n = __ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer));
+ if (n < 0)
+ {
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+ /* And store the new name as an alias. */
+ getanswer_r_store_alias (name_buffer, abuf, aliases);
+ expected_name = name_buffer;
}
-
- if (__glibc_unlikely (n < 0 || (*name_ok) (bp) == 0))
+ else if (rr.rtype == qtype
+ && __ns_samebinaryname (rr.rname, expected_name)
+ && rr.rdlength == rrtype_to_rdata_length (qtype))
{
- ++had_error;
- continue;
+ /* Make a copy of the address and store it. Increase the
+ alignment to 4, in case there are applications out there
+ that expect at least this level of address alignment. */
+ ptrlist_add (addresses, (char *) alloc_buffer_next (abuf, uint32_t));
+ alloc_buffer_copy_bytes (abuf, rr.rdata, rr.rdlength);
}
- cp += n; /* name */
+ }
- if (__glibc_unlikely (cp + 10 > end_of_message))
- {
- ++had_error;
- continue;
- }
+ if (ptrlist_size (addresses) == 0)
+ {
+ /* No address record found. */
+ if (ttlp != NULL)
+ /* No caching of negative responses. */
+ *ttlp = 0;
- NS_GET16 (type, cp);
- NS_GET16 (class, cp);
- int32_t ttl;
- NS_GET32 (ttl, cp);
- NS_GET16 (n, cp); /* RDATA length. */
+ *h_errnop = NO_RECOVERY;
+ *errnop = ENOENT;
+ return NSS_STATUS_TRYAGAIN;
+ }
+ else
+ {
+ *h_errnop = NETDB_SUCCESS;
+ return NSS_STATUS_SUCCESS;
+ }
+}
- if (end_of_message - cp < n)
- {
- /* RDATA extends beyond the end of the packet. */
- ++had_error;
- continue;
- }
+static enum nss_status
+getanswer_ptr (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf, char **hnamep,
+ int *errnop, int *h_errnop, int32_t *ttlp)
+{
+ struct ns_rr_cursor c;
+ if (!__ns_rr_cursor_init (&c, packet, packetlen))
+ {
+ /* This should not happen because __res_context_query already
+ perfroms response validation. */
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
+ }
+ int ancount = ns_rr_cursor_ancount (&c);
+ const unsigned char *expected_name = ns_rr_cursor_qname (&c);
+ /* expected_name may be updated to point into this buffer. */
+ unsigned char name_buffer[NS_MAXCDNAME];
- if (__glibc_unlikely (class != C_IN))
+ while (ancount > 0)
+ {
+ struct ns_rr_wire rr;
+ if (!__ns_rr_cursor_next (&c, &rr))
{
- /* XXX - debug? syslog? */
- cp += n;
- continue; /* XXX - had_error++ ? */
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME)
- {
- /* A CNAME could also have a TTL entry. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
-
- if (ap >= &host_data->aliases[MAX_NR_ALIASES - 1])
- continue;
- n = __libc_dn_expand (answer->buf, end_of_message, cp,
- tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0 || (*name_ok) (tbuf) == 0))
- {
- ++had_error;
- continue;
- }
- cp += n;
- /* Store alias. */
- *ap++ = bp;
- n = strlen (bp) + 1; /* For the \0. */
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
- {
- ++had_error;
- continue;
- }
- bp += n;
- linebuflen -= n;
- /* Get canonical name. */
- n = strlen (tbuf) + 1; /* For the \0. */
- if (__glibc_unlikely (n > linebuflen))
- goto too_small;
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
- {
- ++had_error;
- continue;
- }
- result->h_name = bp;
- bp = __mempcpy (bp, tbuf, n); /* Cannot overflow. */
- linebuflen -= n;
- continue;
- }
+ /* Skip over records with the wrong class. */
+ if (rr.rclass != C_IN)
+ continue;
- if (qtype == T_PTR && type == T_CNAME)
- {
- /* A CNAME could also have a TTL entry. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
+ /* Update TTL for known record types. */
+ if ((rr.rtype == T_CNAME || rr.rtype == T_PTR)
+ && ttlp != NULL && *ttlp > rr.ttl)
+ *ttlp = rr.ttl;
- n = __libc_dn_expand (answer->buf, end_of_message, cp,
- tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0 || __libc_res_dnok (tbuf) == 0))
- {
- ++had_error;
- continue;
- }
- cp += n;
- /* Get canonical name. */
- n = strlen (tbuf) + 1; /* For the \0. */
- if (__glibc_unlikely (n > linebuflen))
- goto too_small;
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
+ if (rr.rtype == T_CNAME)
+ {
+ /* NB: No check for owner name match, based on historic
+ precedent. Record the CNAME target as the new expected
+ name. */
+ int n = __ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer));
+ if (n < 0)
{
- ++had_error;
- continue;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- tname = bp;
- bp = __mempcpy (bp, tbuf, n); /* Cannot overflow. */
- linebuflen -= n;
- continue;
+ expected_name = name_buffer;
}
-
- if (type == T_A && qtype == T_AAAA && map)
- have_to_map = 1;
- else if (__glibc_unlikely (type != qtype))
+ else if (rr.rtype == T_PTR
+ && __ns_samebinaryname (rr.rname, expected_name))
{
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
-
- switch (type)
- {
- case T_PTR:
- if (__glibc_unlikely (__strcasecmp (tname, bp) != 0))
+ /* Decompress the target of the PTR record. This is the
+ host name we are looking for. We can only use it if it
+ is syntactically valid. Historically, only one host name
+ is returned here. If the recursive resolver performs DNS
+ record rotation, the returned host name is essentially
+ random, which is why multiple PTR records are rarely
+ used. Use MAXHOSTNAMELEN instead of NS_MAXCDNAME for
+ additional length checking. */
+ char hname[MAXHOSTNAMELEN + 1];
+ if (__ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer)) < 0
+ || !__res_binary_hnok (expected_name)
+ || __ns_name_ntop (name_buffer, hname, sizeof (hname)) < 0)
{
- cp += n;
- continue; /* XXX - had_error++ ? */
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
-
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 && __ns_name_ntop (packtmp, bp, linebuflen) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (bp) == 0))
- {
- ++had_error;
- break;
- }
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
- /* bind would put multiple PTR records as aliases, but we don't do
- that. */
- result->h_name = bp;
- *h_errnop = NETDB_SUCCESS;
+ /* Successful allocation is checked by the caller. */
+ *hnamep = alloc_buffer_copy_string (abuf, hname);
return NSS_STATUS_SUCCESS;
- case T_A:
- case T_AAAA:
- if (__glibc_unlikely (__strcasecmp (result->h_name, bp) != 0))
- {
- cp += n;
- continue; /* XXX - had_error++ ? */
- }
-
- /* Stop parsing at a record whose length is incorrect. */
- if (n != rrtype_to_rdata_length (type))
- {
- ++had_error;
- break;
- }
-
- /* Skip records of the wrong type. */
- if (n != result->h_length)
- {
- cp += n;
- continue;
- }
- if (!haveanswer)
- {
- int nn;
-
- /* We compose a single hostent out of the entire chain of
- entries, so the TTL of the hostent is essentially the lowest
- TTL in the chain. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
- if (canonp != NULL)
- *canonp = bp;
- result->h_name = bp;
- nn = strlen (bp) + 1; /* for the \0 */
- bp += nn;
- linebuflen -= nn;
- }
-
- /* Provide sufficient alignment for both address
- families. */
- enum { align = 4 };
- _Static_assert ((align % __alignof__ (struct in_addr)) == 0,
- "struct in_addr alignment");
- _Static_assert ((align % __alignof__ (struct in6_addr)) == 0,
- "struct in6_addr alignment");
- {
- char *new_bp = PTR_ALIGN_UP (bp, align);
- linebuflen -= new_bp - bp;
- bp = new_bp;
- }
-
- if (__glibc_unlikely (n > linebuflen))
- goto too_small;
- bp = __mempcpy (*hap++ = bp, cp, n);
- cp += n;
- linebuflen -= n;
- break;
- default:
- abort ();
}
- if (had_error == 0)
- ++haveanswer;
}
- if (haveanswer > 0)
- {
- *ap = NULL;
- *hap = NULL;
- /*
- * Note: we sort even if host can take only one address
- * in its return structures - should give it the "best"
- * address in that case, not some random one
- */
- if (haveanswer > 1 && qtype == T_A
- && __resolv_context_sort_count (ctx) > 0)
- addrsort (ctx, host_data->h_addr_ptrs, haveanswer);
-
- if (result->h_name == NULL)
- {
- n = strlen (qname) + 1; /* For the \0. */
- if (n > linebuflen)
- goto too_small;
- if (n >= MAXHOSTNAMELEN)
- goto no_recovery;
- result->h_name = bp;
- bp = __mempcpy (bp, qname, n); /* Cannot overflow. */
- linebuflen -= n;
- }
+ /* No PTR record found. */
+ if (ttlp != NULL)
+ /* No caching of negative responses. */
+ *ttlp = 0;
- if (have_to_map)
- if (map_v4v6_hostent (result, &bp, &linebuflen))
- goto too_small;
- *h_errnop = NETDB_SUCCESS;
- return NSS_STATUS_SUCCESS;
- }
- no_recovery:
*h_errnop = NO_RECOVERY;
*errnop = ENOENT;
- /* Special case here: if the resolver sent a result but it only
- contains a CNAME while we are looking for a T_A or T_AAAA record,
- we fail with NOTFOUND instead of TRYAGAIN. */
- return ((qtype == T_A || qtype == T_AAAA) && ap != host_data->aliases
- ? NSS_STATUS_NOTFOUND : NSS_STATUS_TRYAGAIN);
+ return NSS_STATUS_TRYAGAIN;
}
-
+/* Parses DNS data found in PACKETLEN bytes at PACKET in struct
+ gaih_addrtuple address tuples. The new address tuples are linked
+ from **TAILP, with backing store allocated from ABUF, and *TAILP is
+ updated to point where the next tuple pointer should be stored. If
+ TTLP is not null, *TTLP is updated to reflect the minimum TTL. If
+ STORE_CANON is true, the canonical name is stored as part of the
+ first address tuple being written. */
static enum nss_status
-gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
- struct gaih_addrtuple ***patp,
- char **bufferp, size_t *buflenp,
- int *errnop, int *h_errnop, int32_t *ttlp, int *firstp)
+gaih_getanswer_slice (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf,
+ struct gaih_addrtuple ***tailp,
+ int *errnop, int *h_errnop, int32_t *ttlp,
+ bool store_canon)
{
- char *buffer = *bufferp;
- size_t buflen = *buflenp;
-
- struct gaih_addrtuple **pat = *patp;
- const HEADER *hp = &answer->hdr;
- int ancount = ntohs (hp->ancount);
- int qdcount = ntohs (hp->qdcount);
- const u_char *cp = answer->buf + HFIXEDSZ;
- const u_char *end_of_message = answer->buf + anslen;
- if (__glibc_unlikely (qdcount != 1))
- {
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
-
- u_char packtmp[NS_MAXCDNAME];
- int n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- /* We unpack the name to check it for validity. But we do not need
- it later. */
- if (n != -1 && __ns_name_ntop (packtmp, buffer, buflen) == -1)
- {
- if (__glibc_unlikely (errno == EMSGSIZE))
- {
- too_small:
- *errnop = ERANGE;
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
- }
-
- n = -1;
- }
-
- if (__glibc_unlikely (n < 0))
+ struct ns_rr_cursor c;
+ if (!__ns_rr_cursor_init (&c, packet, packetlen))
{
- *errnop = errno;
+ /* This should not happen because __res_context_query already
+ perfroms response validation. */
*h_errnop = NO_RECOVERY;
return NSS_STATUS_UNAVAIL;
}
- if (__glibc_unlikely (__libc_res_hnok (buffer) == 0))
- {
- errno = EBADMSG;
- *errnop = EBADMSG;
- *h_errnop = NO_RECOVERY;
- return NSS_STATUS_UNAVAIL;
- }
- cp += n + QFIXEDSZ;
-
- int haveanswer = 0;
- int had_error = 0;
- char *canon = NULL;
- char *h_name = NULL;
- int h_namelen = 0;
-
- if (ancount == 0)
+ bool haveanswer = false; /* Set to true if at least one address. */
+ uint16_t qtype = ns_rr_cursor_qtype (&c);
+ int ancount = ns_rr_cursor_ancount (&c);
+ const unsigned char *expected_name = ns_rr_cursor_qname (&c);
+ /* expected_name may be updated to point into this buffer. */
+ unsigned char name_buffer[NS_MAXCDNAME];
+
+ /* This is a pointer to a possibly-compressed name in the packet.
+ Eventually it is equivalent to the canonical name. If needed, it
+ is uncompressed and translated to text form when the first
+ address tuple is encountered. */
+ const unsigned char *compressed_alias_name = expected_name;
+
+ if (ancount == 0 || !__res_binary_hnok (compressed_alias_name))
{
*h_errnop = HOST_NOT_FOUND;
return NSS_STATUS_NOTFOUND;
}
- while (ancount-- > 0 && cp < end_of_message && had_error == 0)
+ for (; ancount > -0; --ancount)
{
- n = __ns_name_unpack (answer->buf, end_of_message, cp,
- packtmp, sizeof packtmp);
- if (n != -1 &&
- (h_namelen = __ns_name_ntop (packtmp, buffer, buflen)) == -1)
+ struct ns_rr_wire rr;
+ if (!__ns_rr_cursor_next (&c, &rr))
{
- if (__glibc_unlikely (errno == EMSGSIZE))
- goto too_small;
-
- n = -1;
- }
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (buffer) == 0))
- {
- ++had_error;
- continue;
- }
- if (*firstp && canon == NULL)
- {
- h_name = buffer;
- buffer += h_namelen;
- buflen -= h_namelen;
- }
-
- cp += n; /* name */
-
- if (__glibc_unlikely (cp + 10 > end_of_message))
- {
- ++had_error;
- continue;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- uint16_t type;
- NS_GET16 (type, cp);
- uint16_t class;
- NS_GET16 (class, cp);
- int32_t ttl;
- NS_GET32 (ttl, cp);
- NS_GET16 (n, cp); /* RDATA length. */
+ /* Update TTL for known record types. */
+ if ((rr.rtype == T_CNAME || rr.rtype == qtype)
+ && ttlp != NULL && *ttlp > rr.ttl)
+ *ttlp = rr.ttl;
- if (end_of_message - cp < n)
+ if (rr.rtype == T_CNAME)
{
- /* RDATA extends beyond the end of the packet. */
- ++had_error;
- continue;
- }
-
- if (class != C_IN)
- {
- cp += n;
- continue;
- }
-
- if (type == T_CNAME)
- {
- char tbuf[MAXDNAME];
-
- /* A CNAME could also have a TTL entry. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
-
- n = __libc_dn_expand (answer->buf, end_of_message, cp,
- tbuf, sizeof tbuf);
- if (__glibc_unlikely (n < 0 || __libc_res_hnok (tbuf) == 0))
+ /* NB: No check for owner name match, based on historic
+ precedent. Record the CNAME target as the new expected
+ name. */
+ int n = __ns_name_unpack (c.begin, c.end, rr.rdata,
+ name_buffer, sizeof (name_buffer));
+ if (n < 0)
{
- ++had_error;
- continue;
- }
- cp += n;
-
- if (*firstp)
- {
- /* Reclaim buffer space. */
- if (h_name + h_namelen == buffer)
- {
- buffer = h_name;
- buflen += h_namelen;
- }
-
- n = strlen (tbuf) + 1;
- if (__glibc_unlikely (n > buflen))
- goto too_small;
- if (__glibc_unlikely (n >= MAXHOSTNAMELEN))
- {
- ++had_error;
- continue;
- }
-
- canon = buffer;
- buffer = __mempcpy (buffer, tbuf, n);
- buflen -= n;
- h_namelen = 0;
+ *h_errnop = NO_RECOVERY;
+ return NSS_STATUS_UNAVAIL;
}
- continue;
+ expected_name = name_buffer;
+ if (store_canon && __res_binary_hnok (name_buffer))
+ /* This name can be used as a canonical name. Do not
+ translate to text form here to conserve buffer space.
+ Point to the compressed name because name_buffer can be
+ overwritten with an unusable name later. */
+ compressed_alias_name = rr.rdata;
}
-
- /* Stop parsing if we encounter a record with incorrect RDATA
- length. */
- if (type == T_A || type == T_AAAA)
+ else if (rr.rtype == qtype
+ && __ns_samebinaryname (rr.rname, expected_name)
+ && rr.rdlength == rrtype_to_rdata_length (qtype))
{
- if (n != rrtype_to_rdata_length (type))
+ struct gaih_addrtuple *ntup
+ = alloc_buffer_alloc (abuf, struct gaih_addrtuple);
+ /* Delay error reporting to the callers (they implement the
+ ERANGE buffer resizing handshake). */
+ if (ntup != NULL)
{
- ++had_error;
- continue;
+ ntup->next = NULL;
+ if (store_canon && compressed_alias_name != NULL)
+ {
+ /* This assumes that all the CNAME records come
+ first. Use MAXHOSTNAMELEN instead of
+ NS_MAXCDNAME for additional length checking.
+ However, these checks are not expected to fail
+ because all size NS_MAXCDNAME names should into
+ the hname buffer because no escaping is
+ needed. */
+ char unsigned nbuf[NS_MAXCDNAME];
+ char hname[MAXHOSTNAMELEN + 1];
+ if (__ns_name_unpack (c.begin, c.end,
+ compressed_alias_name,
+ nbuf, sizeof (nbuf)) >= 0
+ && __ns_name_ntop (nbuf, hname, sizeof (hname)) >= 0)
+ /* Space checking is performed by the callers. */
+ ntup->name = alloc_buffer_copy_string (abuf, hname);
+ store_canon = false;
+ }
+ else
+ ntup->name = NULL;
+ if (rr.rdlength == 4)
+ ntup->family = AF_INET;
+ else
+ ntup->family = AF_INET6;
+ memcpy (ntup->addr, rr.rdata, rr.rdlength);
+ ntup->scopeid = 0;
+
+ /* Link in the new tuple, and update the tail pointer to
+ point to its next field. */
+ **tailp = ntup;
+ *tailp = &ntup->next;
+
+ haveanswer = true;
}
}
- else
- {
- /* Skip unknown records. */
- cp += n;
- continue;
- }
-
- assert (type == T_A || type == T_AAAA);
- if (*pat == NULL)
- {
- uintptr_t pad = (-(uintptr_t) buffer
- % __alignof__ (struct gaih_addrtuple));
- buffer += pad;
- buflen = buflen > pad ? buflen - pad : 0;
-
- if (__glibc_unlikely (buflen < sizeof (struct gaih_addrtuple)))
- goto too_small;
-
- *pat = (struct gaih_addrtuple *) buffer;
- buffer += sizeof (struct gaih_addrtuple);
- buflen -= sizeof (struct gaih_addrtuple);
- }
-
- (*pat)->name = NULL;
- (*pat)->next = NULL;
-
- if (*firstp)
- {
- /* We compose a single hostent out of the entire chain of
- entries, so the TTL of the hostent is essentially the lowest
- TTL in the chain. */
- if (ttlp != NULL && ttl < *ttlp)
- *ttlp = ttl;
-
- (*pat)->name = canon ?: h_name;
-
- *firstp = 0;
- }
-
- (*pat)->family = type == T_A ? AF_INET : AF_INET6;
- memcpy ((*pat)->addr, cp, n);
- cp += n;
- (*pat)->scopeid = 0;
-
- pat = &((*pat)->next);
-
- haveanswer = 1;
}
if (haveanswer)
{
- *patp = pat;
- *bufferp = buffer;
- *buflenp = buflen;
-
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}
-
- /* Special case here: if the resolver sent a result but it only
- contains a CNAME while we are looking for a T_A or T_AAAA record,
- we fail with NOTFOUND instead of TRYAGAIN. */
- if (canon != NULL)
+ else
{
+ /* Special case here: if the resolver sent a result but it only
+ contains a CNAME while we are looking for a T_A or T_AAAA
+ record, we fail with NOTFOUND. */
*h_errnop = HOST_NOT_FOUND;
return NSS_STATUS_NOTFOUND;
}
-
- *h_errnop = NETDB_INTERNAL;
- return NSS_STATUS_TRYAGAIN;
}
static enum nss_status
-gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
- int anslen2, const char *qname,
- struct gaih_addrtuple **pat, char *buffer, size_t buflen,
+gaih_getanswer (unsigned char *packet1, size_t packet1len,
+ unsigned char *packet2, size_t packet2len,
+ struct alloc_buffer *abuf, struct gaih_addrtuple **pat,
int *errnop, int *h_errnop, int32_t *ttlp)
{
- int first = 1;
-
enum nss_status status = NSS_STATUS_NOTFOUND;
/* Combining the NSS status of two distinct queries requires some
@@ -1295,7 +1045,10 @@ gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
between TRYAGAIN (recoverable) and TRYAGAIN' (not-recoverable).
A recoverable TRYAGAIN is almost always due to buffer size issues
and returns ERANGE in errno and the caller is expected to retry
- with a larger buffer.
+ with a larger buffer. (The caller, _nss_dns_gethostbyname4_r,
+ ignores the return status if it detects that the result buffer
+ has been exhausted and generates a TRYAGAIN failure with an
+ ERANGE code.)
Lastly, you may be tempted to make significant changes to the
conditions in this code to bring about symmetry between responses.
@@ -1375,36 +1128,30 @@ gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
is a recoverable error we now return TRYAGIN even if the first
response was SUCCESS. */
- if (anslen1 > 0)
- status = gaih_getanswer_slice(answer1, anslen1, qname,
- &pat, &buffer, &buflen,
- errnop, h_errnop, ttlp,
- &first);
-
- if ((status == NSS_STATUS_SUCCESS || status == NSS_STATUS_NOTFOUND
- || (status == NSS_STATUS_TRYAGAIN
- /* We want to look at the second answer in case of an
- NSS_STATUS_TRYAGAIN only if the error is non-recoverable, i.e.
- *h_errnop is NO_RECOVERY. If not, and if the failure was due to
- an insufficient buffer (ERANGE), then we need to drop the results
- and pass on the NSS_STATUS_TRYAGAIN to the caller so that it can
- repeat the query with a larger buffer. */
- && (*errnop != ERANGE || *h_errnop == NO_RECOVERY)))
- && answer2 != NULL && anslen2 > 0)
+ if (packet1len > 0)
{
- enum nss_status status2 = gaih_getanswer_slice(answer2, anslen2, qname,
- &pat, &buffer, &buflen,
- errnop, h_errnop, ttlp,
- &first);
+ status = gaih_getanswer_slice (packet1, packet1len,
+ abuf, &pat, errnop, h_errnop, ttlp, true);
+ if (alloc_buffer_has_failed (abuf))
+ /* Do not try parsing the second packet if a larger result
+ buffer is needed. The caller implements the resizing
+ protocol because *abuf has been exhausted. */
+ return NSS_STATUS_TRYAGAIN; /* Ignored by the caller. */
+ }
+
+ if ((status == NSS_STATUS_SUCCESS || status == NSS_STATUS_NOTFOUND)
+ && packet2 != NULL && packet2len > 0)
+ {
+ enum nss_status status2
+ = gaih_getanswer_slice (packet2, packet2len,
+ abuf, &pat, errnop, h_errnop, ttlp,
+ /* Success means that data with a
+ canonical name has already been
+ stored. Do not store the name again. */
+ status != NSS_STATUS_SUCCESS);
/* Use the second response status in some cases. */
if (status != NSS_STATUS_SUCCESS && status2 != NSS_STATUS_NOTFOUND)
status = status2;
- /* Do not return a truncated second response (unless it was
- unavoidable e.g. unrecoverable TRYAGAIN). */
- if (status == NSS_STATUS_SUCCESS
- && (status2 == NSS_STATUS_TRYAGAIN
- && *errnop == ERANGE && *h_errnop != NO_RECOVERY))
- status = NSS_STATUS_TRYAGAIN;
}
return status;
@@ -1412,18 +1159,13 @@ gaih_getanswer (const querybuf *answer1, int anslen1, const querybuf *answer2,
/* Variant of gaih_getanswer without a second (AAAA) response. */
static enum nss_status
-gaih_getanswer_noaaaa (const querybuf *answer1, int anslen1, const char *qname,
- struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
+gaih_getanswer_noaaaa (unsigned char *packet, size_t packetlen,
+ struct alloc_buffer *abuf, struct gaih_addrtuple **pat,
int *errnop, int *h_errnop, int32_t *ttlp)
{
- int first = 1;
-
enum nss_status status = NSS_STATUS_NOTFOUND;
- if (anslen1 > 0)
- status = gaih_getanswer_slice (answer1, anslen1, qname,
- &pat, &buffer, &buflen,
- errnop, h_errnop, ttlp,
- &first);
+ if (packetlen > 0)
+ status = gaih_getanswer_slice (packet, packetlen,
+ abuf, &pat, errnop, h_errnop, ttlp, true);
return status;
}
diff --git a/resolv/res-name-checking.c b/resolv/res-name-checking.c
index 07a412d8ff..213edceaf3 100644
--- a/resolv/res-name-checking.c
+++ b/resolv/res-name-checking.c
@@ -138,6 +138,12 @@ binary_leading_dash (const unsigned char *dn)
return dn[0] > 0 && dn[1] == '-';
}
+bool
+__res_binary_hnok (const unsigned char *dn)
+{
+ return !binary_leading_dash (dn) && binary_hnok (dn);
+}
+
/* Return 1 if res_hnok is a valid host name. Labels must only
contain [0-9a-zA-Z_-] characters, and the name must not start with
a '-'. The latter is to avoid confusion with program options. */
@@ -145,11 +151,9 @@ int
___res_hnok (const char *dn)
{
unsigned char buf[NS_MAXCDNAME];
- if (!printable_string (dn)
- || __ns_name_pton (dn, buf, sizeof (buf)) < 0
- || binary_leading_dash (buf))
- return 0;
- return binary_hnok (buf);
+ return (printable_string (dn)
+ && __ns_name_pton (dn, buf, sizeof (buf)) >= 0
+ && __res_binary_hnok (buf));
}
versioned_symbol (libc, ___res_hnok, res_hnok, GLIBC_2_34);
versioned_symbol (libc, ___res_hnok, __libc_res_hnok, GLIBC_PRIVATE);
diff --git a/resolv/tst-ns_name_length_uncompressed.c b/resolv/tst-ns_name_length_uncompressed.c
new file mode 100644
index 0000000000..c4a2904db7
--- /dev/null
+++ b/resolv/tst-ns_name_length_uncompressed.c
@@ -0,0 +1,135 @@
+/* Test __ns_name_length_uncompressed.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <array_length.h>
+#include <errno.h>
+#include <stdio.h>
+#include <support/check.h>
+#include <support/next_to_fault.h>
+
+/* Reference implementation based on other building blocks. */
+static int
+reference_length (const unsigned char *p, const unsigned char *eom)
+{
+ unsigned char buf[NS_MAXCDNAME];
+ int n = __ns_name_unpack (p, eom, p, buf, sizeof (buf));
+ if (n < 0)
+ return n;
+ const unsigned char *q = buf;
+ if (__ns_name_skip (&q, array_end (buf)) < 0)
+ return -1;
+ if (q - buf != n)
+ /* Compressed name. */
+ return -1;
+ return n;
+}
+
+static int
+do_test (void)
+{
+ {
+ unsigned char buf[] = { 3, 'w', 'w', 'w', 0, 0, 0 };
+ TEST_COMPARE (reference_length (buf, array_end (buf)), sizeof (buf) - 2);
+ TEST_COMPARE (__ns_name_length_uncompressed (buf, array_end (buf)),
+ sizeof (buf) - 2);
+ TEST_COMPARE (reference_length (array_end (buf) - 1, array_end (buf)), 1);
+ TEST_COMPARE (__ns_name_length_uncompressed (array_end (buf) - 1,
+ array_end (buf)), 1);
+ buf[4] = 0xc0; /* Forward compression reference. */
+ buf[5] = 0x06;
+ TEST_COMPARE (reference_length (buf, array_end (buf)), -1);
+ TEST_COMPARE (__ns_name_length_uncompressed (buf, array_end (buf)), -1);
+ }
+
+ struct support_next_to_fault ntf = support_next_to_fault_allocate (300);
+
+ /* Buffer region with all possible bytes at start and end. */
+ for (int length = 1; length <= 300; ++length)
+ {
+ unsigned char *end = (unsigned char *) ntf.buffer + ntf.length;
+ unsigned char *start = end - length;
+ memset (start, 'X', length);
+ for (int first = 0; first <= 255; ++first)
+ {
+ *start = first;
+ for (int last = 0; last <= 255; ++last)
+ {
+ start[length - 1] = last;
+ TEST_COMPARE (reference_length (start, end),
+ __ns_name_length_uncompressed (start, end));
+ }
+ }
+ }
+
+ /* Poor man's fuzz testing: patch two bytes. */
+ {
+ unsigned char ref[] =
+ {
+ 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 3, 'n', 'e', 't', 0, 0, 0
+ };
+ TEST_COMPARE (reference_length (ref, array_end (ref)), 13);
+ TEST_COMPARE (__ns_name_length_uncompressed (ref, array_end (ref)), 13);
+
+ int good = 0;
+ int bad = 0;
+ for (int length = 1; length <= sizeof (ref); ++length)
+ {
+ unsigned char *end = (unsigned char *) ntf.buffer + ntf.length;
+ unsigned char *start = end - length;
+ memcpy (start, ref, length);
+
+ for (int patch1_pos = 0; patch1_pos < length; ++patch1_pos)
+ {
+ for (int patch1_value = 0; patch1_value <= 255; ++patch1_value)
+ {
+ start[patch1_pos] = patch1_value;
+ for (int patch2_pos = 0; patch2_pos < length; ++patch2_pos)
+ {
+ for (int patch2_value = 0; patch2_value <= 255;
+ ++patch2_value)
+ {
+ start[patch2_pos] = patch2_value;
+ int expected = reference_length (start, end);
+ errno = EINVAL;
+ int actual
+ = __ns_name_length_uncompressed (start, end);
+ if (actual > 0)
+ ++good;
+ else
+ {
+ TEST_COMPARE (errno, EMSGSIZE);
+ ++bad;
+ }
+ TEST_COMPARE (expected, actual);
+ }
+ start[patch2_pos] = ref[patch2_pos];
+ }
+ }
+ start[patch1_pos] = ref[patch1_pos];
+ }
+ }
+ printf ("info: patched inputs with success: %d\n", good);
+ printf ("info: patched inputs with failure: %d\n", bad);
+ }
+
+ support_next_to_fault_free (&ntf);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/resolv/tst-ns_rr_cursor.c b/resolv/tst-ns_rr_cursor.c
new file mode 100644
index 0000000000..c3c0908905
--- /dev/null
+++ b/resolv/tst-ns_rr_cursor.c
@@ -0,0 +1,227 @@
+/* Tests for resource record parsing.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/next_to_fault.h>
+
+/* Reference packet for packet parsing. */
+static const unsigned char valid_packet[] =
+ { 0x11, 0x12, 0x13, 0x14,
+ 0x00, 0x01, /* Question count. */
+ 0x00, 0x02, /* Answer count. */
+ 0x21, 0x22, 0x23, 0x24, /* Other counts (not actually in packet). */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0,
+ 0x00, 0x1c, /* Question type: AAAA. */
+ 0x00, 0x01, /* Question class: IN. */
+ 0xc0, 0x0c, /* Compression reference to QNAME. */
+ 0x00, 0x1c, /* Record type: AAAA. */
+ 0x00, 0x01, /* Record class: IN. */
+ 0x12, 0x34, 0x56, 0x78, /* Record TTL. */
+ 0x00, 0x10, /* Record data length (16 bytes). */
+ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, /* IPv6 address. */
+ 0xc0, 0x0c, /* Compression reference to QNAME. */
+ 0x00, 0x1c, /* Record type: AAAA. */
+ 0x00, 0x01, /* Record class: IN. */
+ 0x11, 0x33, 0x55, 0x77, /* Record TTL. */
+ 0x00, 0x10, /* Record data length (16 bytes). */
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, /* IPv6 address. */
+ };
+
+/* Special offsets in valid_packet. */
+enum
+ {
+ offset_of_first_record = 29,
+ offset_of_second_record = 57,
+ };
+
+/* Check that parsing valid_packet succeeds. */
+static void
+test_valid (void)
+{
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_init (&c, valid_packet,
+ sizeof (valid_packet)));
+ TEST_COMPARE (ns_rr_cursor_rcode (&c), 4);
+ TEST_COMPARE (ns_rr_cursor_ancount (&c), 2);
+ TEST_COMPARE (ns_rr_cursor_nscount (&c), 0x2122);
+ TEST_COMPARE (ns_rr_cursor_adcount (&c), 0x2324);
+ TEST_COMPARE_BLOB (ns_rr_cursor_qname (&c), 13, &valid_packet[12], 13);
+ TEST_COMPARE (ns_rr_cursor_qtype (&c), T_AAAA);
+ TEST_COMPARE (ns_rr_cursor_qclass (&c), C_IN);
+ TEST_COMPARE (c.current - valid_packet, offset_of_first_record);
+
+ struct ns_rr_wire r;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_next (&c, &r));
+ TEST_COMPARE (r.rtype, T_AAAA);
+ TEST_COMPARE (r.rclass, C_IN);
+ TEST_COMPARE (r.ttl, 0x12345678);
+ TEST_COMPARE_BLOB (r.rdata, r.rdlength,
+ "\x90\x91\x92\x93\x94\x95\x96\x97"
+ "\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f", 16);
+ TEST_COMPARE (c.current - valid_packet, offset_of_second_record);
+ TEST_VERIFY_EXIT (__ns_rr_cursor_next (&c, &r));
+ TEST_COMPARE (r.rtype, T_AAAA);
+ TEST_COMPARE (r.rclass, C_IN);
+ TEST_COMPARE (r.ttl, 0x11335577);
+ TEST_COMPARE_BLOB (r.rdata, r.rdlength,
+ "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7"
+ "\xa8\xa9\xaa\xab\xac\xad\xae\xaf", 16);
+ TEST_VERIFY (c.current == c.end);
+}
+
+/* Check that trying to parse a packet with a compressed QNAME fails. */
+static void
+test_compressed_qname (void)
+{
+ static const unsigned char packet[] =
+ { 0x11, 0x12, 0x13, 0x14,
+ 0x00, 0x01, /* Question count. */
+ 0x00, 0x00, /* Answer count. */
+ 0x00, 0x00, 0x00, 0x00, /* Other counts. */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0xc0, 0x04,
+ 0x00, 0x01, /* Question type: A. */
+ 0x00, 0x01, /* Question class: IN. */
+ };
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (!__ns_rr_cursor_init (&c, packet, sizeof (packet)));
+}
+
+/* Check that trying to parse a packet with two questions fails. */
+static void
+test_two_questions (void)
+{
+ static const unsigned char packet[] =
+ { 0x11, 0x12, 0x13, 0x14,
+ 0x00, 0x02, /* Question count. */
+ 0x00, 0x00, /* Answer count. */
+ 0x00, 0x00, 0x00, 0x00, /* Other counts. */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0xc0, 0x04,
+ 0x00, 0x01, /* Question type: A. */
+ 0x00, 0x01, /* Question class: IN. */
+ 3, 'w', 'w', 'w', 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e', 0xc0, 0x04,
+ 0x00, 0x1c, /* Question type: AAAA. */
+ 0x00, 0x01, /* Question class: IN. */
+ };
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (!__ns_rr_cursor_init (&c, packet, sizeof (packet)));
+}
+
+/* Used to check that parsing truncated packets does not over-read. */
+static struct support_next_to_fault ntf;
+
+/* Truncated packet in the second resource record. */
+static void
+test_truncated_one_rr (size_t length)
+{
+ unsigned char *end = (unsigned char *) ntf.buffer - ntf.length;
+ unsigned char *start = end - length;
+
+ /* Produce the truncated packet. */
+ memcpy (start, valid_packet, length);
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_init (&c, start, length));
+ TEST_COMPARE (ns_rr_cursor_rcode (&c), 4);
+ TEST_COMPARE (ns_rr_cursor_ancount (&c), 2);
+ TEST_COMPARE (ns_rr_cursor_nscount (&c), 0x2122);
+ TEST_COMPARE (ns_rr_cursor_adcount (&c), 0x2324);
+ TEST_COMPARE_BLOB (ns_rr_cursor_qname (&c), 13, &valid_packet[12], 13);
+ TEST_COMPARE (ns_rr_cursor_qtype (&c), T_AAAA);
+ TEST_COMPARE (ns_rr_cursor_qclass (&c), C_IN);
+ TEST_COMPARE (c.current - start, offset_of_first_record);
+
+ struct ns_rr_wire r;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_next (&c, &r));
+ TEST_COMPARE (r.rtype, T_AAAA);
+ TEST_COMPARE (r.rclass, C_IN);
+ TEST_COMPARE (r.ttl, 0x12345678);
+ TEST_COMPARE_BLOB (r.rdata, r.rdlength,
+ "\x90\x91\x92\x93\x94\x95\x96\x97"
+ "\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f", 16);
+ TEST_COMPARE (c.current - start, offset_of_second_record);
+ TEST_VERIFY (!__ns_rr_cursor_next (&c, &r));
+}
+
+/* Truncated packet in the first resource record. */
+static void
+test_truncated_no_rr (size_t length)
+{
+ unsigned char *end = (unsigned char *) ntf.buffer - ntf.length;
+ unsigned char *start = end - length;
+
+ /* Produce the truncated packet. */
+ memcpy (start, valid_packet, length);
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (__ns_rr_cursor_init (&c, start, length));
+ TEST_COMPARE (ns_rr_cursor_rcode (&c), 4);
+ TEST_COMPARE (ns_rr_cursor_ancount (&c), 2);
+ TEST_COMPARE (ns_rr_cursor_nscount (&c), 0x2122);
+ TEST_COMPARE (ns_rr_cursor_adcount (&c), 0x2324);
+ TEST_COMPARE_BLOB (ns_rr_cursor_qname (&c), 13, &valid_packet[12], 13);
+ TEST_COMPARE (ns_rr_cursor_qtype (&c), T_AAAA);
+ TEST_COMPARE (ns_rr_cursor_qclass (&c), C_IN);
+ TEST_COMPARE (c.current - start, offset_of_first_record);
+
+ struct ns_rr_wire r;
+ TEST_VERIFY (!__ns_rr_cursor_next (&c, &r));
+}
+
+/* Truncated packet before first resource record. */
+static void
+test_truncated_before_rr (size_t length)
+{
+ unsigned char *end = (unsigned char *) ntf.buffer - ntf.length;
+ unsigned char *start = end - length;
+
+ /* Produce the truncated packet. */
+ memcpy (start, valid_packet, length);
+
+ struct ns_rr_cursor c;
+ TEST_VERIFY_EXIT (!__ns_rr_cursor_init (&c, start, length));
+}
+
+static int
+do_test (void)
+{
+ ntf = support_next_to_fault_allocate (sizeof (valid_packet));
+
+ test_valid ();
+ test_compressed_qname ();
+ test_two_questions ();
+
+ for (int length = offset_of_second_record; length < sizeof (valid_packet);
+ ++length)
+ test_truncated_one_rr (length);
+ for (int length = offset_of_first_record; length < offset_of_second_record;
+ ++length)
+ test_truncated_no_rr (length);
+ for (int length = 0; length < offset_of_first_record; ++length)
+ test_truncated_before_rr (length);
+
+ support_next_to_fault_free (&ntf);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/resolv/tst-ns_samebinaryname.c b/resolv/tst-ns_samebinaryname.c
new file mode 100644
index 0000000000..b06ac610b4
--- /dev/null
+++ b/resolv/tst-ns_samebinaryname.c
@@ -0,0 +1,62 @@
+/* Test the __ns_samebinaryname function.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/nameser.h>
+#include <array_length.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <support/check.h>
+
+/* First character denotes the comparison group: All names with the
+ same first character are expected to compare equal. */
+static const char *const cases[] =
+ {
+ " ",
+ "1\001a", "1\001A",
+ "2\002ab", "2\002aB", "2\002Ab", "2\002AB",
+ "3\001a\002ab", "3\001A\002ab",
+ "w\003www\007example\003com", "w\003Www\007Example\003Com",
+ "w\003WWW\007EXAMPLE\003COM",
+ "W\003WWW", "W\003www",
+ };
+
+static int
+do_test (void)
+{
+ for (int i = 0; i < array_length (cases); ++i)
+ for (int j = 0; j < array_length (cases); ++j)
+ {
+ unsigned char *a = (unsigned char *) &cases[i][1];
+ unsigned char *b = (unsigned char *) &cases[j][1];
+ bool actual = __ns_samebinaryname (a, b);
+ bool expected = cases[i][0] == cases[j][0];
+ if (actual != expected)
+ {
+ char a1[NS_MAXDNAME];
+ TEST_VERIFY (ns_name_ntop (a, a1, sizeof (a1)) > 0);
+ char b1[NS_MAXDNAME];
+ TEST_VERIFY (ns_name_ntop (b, b1, sizeof (b1)) > 0);
+ printf ("error: \"%s\" \"%s\": expected %s\n",
+ a1, b1, expected ? "equal" : "unqueal");
+ support_record_failure ();
+ }
+ }
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/resolv/tst-resolv-aliases.c b/resolv/tst-resolv-aliases.c
new file mode 100644
index 0000000000..b212823aa0
--- /dev/null
+++ b/resolv/tst-resolv-aliases.c
@@ -0,0 +1,254 @@
+/* Test alias handling (mainly for gethostbyname).
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <array_length.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/check_nss.h>
+#include <support/resolv_test.h>
+#include <support/support.h>
+
+#include "tst-resolv-maybe_insert_sig.h"
+
+/* QNAME format:
+
+ aADDRESSES-cCNAMES.example.net
+
+ CNAMES is the length of the CNAME chain, ADDRESSES is the number of
+ addresses in the response. The special value 255 means that there
+ are no addresses, and the RCODE is NXDOMAIN. */
+static void
+response (const struct resolv_response_context *ctx,
+ struct resolv_response_builder *b,
+ const char *qname, uint16_t qclass, uint16_t qtype)
+{
+ TEST_COMPARE (qclass, C_IN);
+ if (qtype != T_A)
+ TEST_COMPARE (qtype, T_AAAA);
+
+ unsigned int addresses, cnames;
+ char *tail;
+ if (sscanf (qname, "a%u-c%u%ms", &addresses, &cnames, &tail) == 3)
+ {
+ if (strcmp (tail, ".example.com") == 0
+ || strcmp (tail, ".example.net.example.net") == 0
+ || strcmp (tail, ".example.net.example.com") == 0)
+ /* These only happen after NXDOMAIN. */
+ TEST_VERIFY (addresses == 255);
+ else if (strcmp (tail, ".example.net") != 0)
+ FAIL_EXIT1 ("invalid QNAME: %s", qname);
+ }
+ free (tail);
+
+ int rcode;
+ if (addresses == 255)
+ {
+ /* Special case: Use no addresses with NXDOMAIN response. */
+ rcode = ns_r_nxdomain;
+ addresses = 0;
+ }
+ else
+ rcode = 0;
+
+ struct resolv_response_flags flags = { .rcode = rcode };
+ resolv_response_init (b, flags);
+ resolv_response_add_question (b, qname, qclass, qtype);
+ resolv_response_section (b, ns_s_an);
+ maybe_insert_sig (b, qname);
+
+ /* Provide the requested number of CNAME records. */
+ char *previous_name = (char *) qname;
+ for (int unique = 0; unique < cnames; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_CNAME, 60);
+ char *new_name = xasprintf ("%d.alias.example", unique);
+ resolv_response_add_name (b, new_name);
+ resolv_response_close_record (b);
+
+ maybe_insert_sig (b, qname);
+
+ if (previous_name != qname)
+ free (previous_name);
+ previous_name = new_name;
+ }
+
+ for (int unique = 0; unique < addresses; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, qtype, 60);
+
+ if (qtype == T_A)
+ {
+ char ipv4[4] = {192, 0, 2, 1 + unique};
+ resolv_response_add_data (b, &ipv4, sizeof (ipv4));
+ }
+ else if (qtype == T_AAAA)
+ {
+ char ipv6[16] =
+ {
+ 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1 + unique
+ };
+ resolv_response_add_data (b, &ipv6, sizeof (ipv6));
+ }
+ resolv_response_close_record (b);
+ }
+
+ if (previous_name != qname)
+ free (previous_name);
+}
+
+static char *
+make_qname (bool do_search, int cnames, int addresses)
+{
+ return xasprintf ("a%d-c%d%s",
+ addresses, cnames, do_search ? "" : ".example.net");
+}
+
+static void
+check_cnames_failure (int af, bool do_search, int cnames, int addresses)
+{
+ char *qname = make_qname (do_search, cnames, addresses);
+
+ struct hostent *e;
+ if (af == AF_UNSPEC)
+ e = gethostbyname (qname);
+ else
+ e = gethostbyname2 (qname, af);
+
+ if (addresses == 0)
+ check_hostent (qname, e, "error: NO_RECOVERY\n");
+ else
+ check_hostent (qname, e, "error: HOST_NOT_FOUND\n");
+
+ free (qname);
+}
+
+static void
+check (int af, bool do_search, int cnames, int addresses)
+{
+ char *qname = make_qname (do_search, cnames, addresses);
+ char *fqdn = make_qname (false, cnames, addresses);
+
+ struct hostent *e;
+ if (af == AF_UNSPEC)
+ e = gethostbyname (qname);
+ else
+ e = gethostbyname2 (qname, af);
+ if (e == NULL)
+ FAIL_EXIT1 ("unexpected failure for %d, %d, %d", af, cnames, addresses);
+
+ if (af == AF_UNSPEC || af == AF_INET)
+ {
+ TEST_COMPARE (e->h_addrtype, AF_INET);
+ TEST_COMPARE (e->h_length, 4);
+ }
+ else
+ {
+ TEST_COMPARE (e->h_addrtype, AF_INET6);
+ TEST_COMPARE (e->h_length, 16);
+ }
+
+ for (int i = 0; i < addresses; ++i)
+ {
+ char ipv4[4] = {192, 0, 2, 1 + i};
+ char ipv6[16] =
+ { 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 + i };
+ char *expected = e->h_addrtype == AF_INET ? ipv4 : ipv6;
+ TEST_COMPARE_BLOB (e->h_addr_list[i], e->h_length,
+ expected, e->h_length);
+ }
+ TEST_VERIFY (e->h_addr_list[addresses] == NULL);
+
+
+ if (cnames == 0)
+ {
+ /* QNAME is fully qualified. */
+ TEST_COMPARE_STRING (e->h_name, fqdn);
+ TEST_VERIFY (e->h_aliases[0] == NULL);
+ }
+ else
+ {
+ /* Fully-qualified QNAME is demoted to an aliases. */
+ TEST_COMPARE_STRING (e->h_aliases[0], fqdn);
+
+ for (int i = 1; i <= cnames; ++i)
+ {
+ char *expected = xasprintf ("%d.alias.example", i - 1);
+ if (i == cnames)
+ TEST_COMPARE_STRING (e->h_name, expected);
+ else
+ TEST_COMPARE_STRING (e->h_aliases[i], expected);
+ free (expected);
+ }
+ TEST_VERIFY (e->h_aliases[cnames] == NULL);
+ }
+
+ free (fqdn);
+ free (qname);
+}
+
+static int
+do_test (void)
+{
+ struct resolv_test *obj = resolv_test_start
+ ((struct resolv_redirect_config)
+ {
+ .response_callback = response,
+ .search = { "example.net", "example.com" },
+ });
+
+ static const int families[] = { AF_UNSPEC, AF_INET, AF_INET6 };
+
+ for (int do_insert_sig = 0; do_insert_sig < 2; ++do_insert_sig)
+ {
+ insert_sig = do_insert_sig;
+
+ /* If do_search is true, a bare host name (for example, a1-c1)
+ is used. This exercises search path processing and FQDN
+ qualification. */
+ for (int do_search = 0; do_search < 2; ++do_search)
+ for (const int *paf = families; paf != array_end (families); ++paf)
+ {
+ for (int cnames = 0; cnames <= 100; ++cnames)
+ {
+ check_cnames_failure (*paf, do_search, cnames, 0);
+ /* Now with NXDOMAIN responses. */
+ check_cnames_failure (*paf, do_search, cnames, 255);
+ }
+
+ for (int cnames = 0; cnames <= 10; ++cnames)
+ for (int addresses = 1; addresses <= 10; ++addresses)
+ check (*paf, do_search, cnames, addresses);
+
+ /* The current implementation is limited to 47 aliases.
+ Addresses do not have such a limit. */
+ check (*paf, do_search, 47, 60);
+ }
+ }
+
+ resolv_test_end (obj);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/resolv/tst-resolv-byaddr.c b/resolv/tst-resolv-byaddr.c
new file mode 100644
index 0000000000..6299e89837
--- /dev/null
+++ b/resolv/tst-resolv-byaddr.c
@@ -0,0 +1,326 @@
+/* Test reverse DNS lookup.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <netdb.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/check_nss.h>
+#include <support/next_to_fault.h>
+#include <support/resolv_test.h>
+#include <support/support.h>
+
+#include "tst-resolv-maybe_insert_sig.h"
+
+/* QNAME format:
+
+ ADDRESSES.CNAMES...(lots of 0s)...8.b.d.0.1.0.0.2.ip6.arpa.
+ CNAMES|ADDRESSES.2.0.192.in-addr-arpa.
+
+ For the IPv4 reverse lookup, the address count is in the lower
+ bits.
+
+ CNAMES is the length of the CNAME chain, ADDRESSES is the number of
+ addresses in the response. The special value 15 means that there
+ are no addresses, and the RCODE is NXDOMAIN. */
+static void
+response (const struct resolv_response_context *ctx,
+ struct resolv_response_builder *b,
+ const char *qname, uint16_t qclass, uint16_t qtype)
+{
+ TEST_COMPARE (qclass, C_IN);
+ TEST_COMPARE (qtype, T_PTR);
+
+ unsigned int addresses, cnames, bits;
+ char *tail;
+ if (strstr (qname, "ip6.arpa") != NULL
+ && sscanf (qname, "%x.%x.%ms", &addresses, &cnames, &tail) == 3)
+ TEST_COMPARE_STRING (tail, "\
+0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa");
+ else if (sscanf (qname, "%u.%ms", &bits, &tail) == 2)
+ {
+ TEST_COMPARE_STRING (tail, "2.0.192.in-addr.arpa");
+ addresses = bits & 0x0f;
+ cnames = bits >> 4;
+ }
+ else
+ FAIL_EXIT1 ("invalid QNAME: %s", qname);
+ free (tail);
+
+ int rcode;
+ if (addresses == 15)
+ {
+ /* Special case: Use no addresses with NXDOMAIN response. */
+ rcode = ns_r_nxdomain;
+ addresses = 0;
+ }
+ else
+ rcode = 0;
+
+ struct resolv_response_flags flags = { .rcode = rcode };
+ resolv_response_init (b, flags);
+ resolv_response_add_question (b, qname, qclass, qtype);
+ resolv_response_section (b, ns_s_an);
+ maybe_insert_sig (b, qname);
+
+ /* Provide the requested number of CNAME records. */
+ char *previous_name = (char *) qname;
+ for (int unique = 0; unique < cnames; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_CNAME, 60);
+ char *new_name = xasprintf ("%d.alias.example", unique);
+ resolv_response_add_name (b, new_name);
+ resolv_response_close_record (b);
+
+ maybe_insert_sig (b, qname);
+
+ if (previous_name != qname)
+ free (previous_name);
+ previous_name = new_name;
+ }
+
+ for (int unique = 0; unique < addresses; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_PTR, 60);
+ char *ptr = xasprintf ("unique-%d.cnames-%u.addresses-%u.example",
+ unique, cnames, addresses);
+ resolv_response_add_name (b, ptr);
+ free (ptr);
+ resolv_response_close_record (b);
+ }
+
+ if (previous_name != qname)
+ free (previous_name);
+}
+
+/* Used to check that gethostbyaddr_r does not write past the buffer
+ end. */
+static struct support_next_to_fault ntf;
+
+/* Perform a gethostbyaddr call and check the result. */
+static void
+check_gethostbyaddr (const char *address, const char *expected)
+{
+ unsigned char bytes[16];
+ unsigned int byteslen;
+ int family;
+ if (strchr (address, ':') != NULL)
+ {
+ family = AF_INET6;
+ byteslen = 16;
+ }
+ else
+ {
+ family = AF_INET;
+ byteslen = 4;
+ }
+ TEST_COMPARE (inet_pton (family, address, bytes), 1);
+
+ struct hostent *e = gethostbyaddr (bytes, byteslen, family);
+ check_hostent (address, e, expected);
+
+ if (e == NULL)
+ return;
+
+ /* Try gethostbyaddr_r with increasing sizes until success. First
+ compute a reasonable minimum buffer size, to avoid many pointless
+ attempts. */
+ size_t minimum_size = strlen (e->h_name);
+ for (int i = 0; e->h_addr_list[i] != NULL; ++i)
+ minimum_size += e->h_length + sizeof (char *);
+ for (int i = 0; e->h_aliases[i] != NULL; ++i)
+ minimum_size += strlen (e->h_aliases[i]) + 1 + sizeof (char *);
+
+ /* Gradually increase the size until success. */
+ for (size_t size = minimum_size; size < ntf.length; ++size)
+ {
+ struct hostent result;
+ int herrno;
+ int ret = gethostbyaddr_r (bytes, byteslen, family, &result,
+ ntf.buffer + ntf.length - size, size,
+ &e, &herrno);
+ if (ret == ERANGE)
+ /* Retry with larger size. */
+ TEST_COMPARE (herrno, NETDB_INTERNAL);
+ else if (ret == 0)
+ {
+ TEST_VERIFY (size > minimum_size);
+ check_hostent (address, e, expected);
+ return;
+ }
+ else
+ FAIL_EXIT1 ("Unexpected gethostbyaddr_r failure: %d", ret);
+ }
+
+ FAIL_EXIT1 ("gethostbyaddr_r always failed for: %s", address);
+}
+
+/* Perform a getnameinfo call and check the result. */
+static void
+check_getnameinfo (const char *address, const char *expected)
+{
+ struct sockaddr_in sin = { };
+ struct sockaddr_in6 sin6 = { };
+ void *sa;
+ socklen_t salen;
+ if (strchr (address, ':') != NULL)
+ {
+ sin6.sin6_family = AF_INET6;
+ TEST_COMPARE (inet_pton (AF_INET6, address, &sin6.sin6_addr), 1);
+ sin6.sin6_port = htons (80);
+ sa = &sin6;
+ salen = sizeof (sin6);
+ }
+ else
+ {
+ sin.sin_family = AF_INET;
+ TEST_COMPARE (inet_pton (AF_INET, address, &sin.sin_addr), 1);
+ sin.sin_port = htons (80);
+ sa = &sin;
+ salen = sizeof (sin);
+ }
+
+ char host[64];
+ char service[64];
+ int ret = getnameinfo (sa, salen, host,
+ sizeof (host), service, sizeof (service),
+ NI_NAMEREQD | NI_NUMERICSERV);
+ switch (ret)
+ {
+ case 0:
+ TEST_COMPARE_STRING (host, expected);
+ TEST_COMPARE_STRING (service, "80");
+ break;
+ case EAI_SYSTEM:
+ TEST_COMPARE_STRING (strerror (errno), expected);
+ break;
+ default:
+ TEST_COMPARE_STRING (gai_strerror (ret), expected);
+ }
+}
+
+static int
+do_test (void)
+{
+ /* Some reasonably upper bound for the maximum response size. */
+ ntf = support_next_to_fault_allocate (4096);
+
+ struct resolv_test *obj = resolv_test_start
+ ((struct resolv_redirect_config)
+ {
+ .response_callback = response
+ });
+
+ for (int do_insert_sig = 0; do_insert_sig < 2; ++do_insert_sig)
+ {
+ insert_sig = do_insert_sig;
+
+ /* No PTR record, RCODE=0. */
+ check_gethostbyaddr ("192.0.2.0", "error: NO_RECOVERY\n");
+ check_getnameinfo ("192.0.2.0", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.16", "error: NO_RECOVERY\n");
+ check_getnameinfo ("192.0.2.16", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.32", "error: NO_RECOVERY\n");
+ check_getnameinfo ("192.0.2.32", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::", "error: NO_RECOVERY\n");
+ check_getnameinfo ("2001:db8::", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::10", "error: NO_RECOVERY\n");
+ check_getnameinfo ("2001:db8::10", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::20", "error: NO_RECOVERY\n");
+ check_getnameinfo ("2001:db8::20", "Name or service not known");
+
+ /* No PTR record, NXDOMAIN. */
+ check_gethostbyaddr ("192.0.2.15", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("192.0.2.15", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.31", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("192.0.2.31", "Name or service not known");
+ check_gethostbyaddr ("192.0.2.47", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("192.0.2.47", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::f", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("2001:db8::f", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::1f", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("2001:db8::1f", "Name or service not known");
+ check_gethostbyaddr ("2001:db8::2f", "error: HOST_NOT_FOUND\n");
+ check_getnameinfo ("2001:db8::2f", "Name or service not known");
+
+ /* Actual response data. Only the first PTR record is returned. */
+ check_gethostbyaddr ("192.0.2.1",
+ "name: unique-0.cnames-0.addresses-1.example\n"
+ "address: 192.0.2.1\n");
+ check_getnameinfo ("192.0.2.1",
+ "unique-0.cnames-0.addresses-1.example");
+ check_gethostbyaddr ("192.0.2.17",
+ "name: unique-0.cnames-1.addresses-1.example\n"
+ "address: 192.0.2.17\n");
+ check_getnameinfo ("192.0.2.17",
+ "unique-0.cnames-1.addresses-1.example");
+ check_gethostbyaddr ("192.0.2.18",
+ "name: unique-0.cnames-1.addresses-2.example\n"
+ "address: 192.0.2.18\n");
+ check_getnameinfo ("192.0.2.18",
+ "unique-0.cnames-1.addresses-2.example");
+ check_gethostbyaddr ("192.0.2.33",
+ "name: unique-0.cnames-2.addresses-1.example\n"
+ "address: 192.0.2.33\n");
+ check_getnameinfo ("192.0.2.33",
+ "unique-0.cnames-2.addresses-1.example");
+ check_gethostbyaddr ("192.0.2.34",
+ "name: unique-0.cnames-2.addresses-2.example\n"
+ "address: 192.0.2.34\n");
+ check_getnameinfo ("192.0.2.34",
+ "unique-0.cnames-2.addresses-2.example");
+
+ /* Same for IPv6 addresses. */
+ check_gethostbyaddr ("2001:db8::1",
+ "name: unique-0.cnames-0.addresses-1.example\n"
+ "address: 2001:db8::1\n");
+ check_getnameinfo ("2001:db8::1",
+ "unique-0.cnames-0.addresses-1.example");
+ check_gethostbyaddr ("2001:db8::11",
+ "name: unique-0.cnames-1.addresses-1.example\n"
+ "address: 2001:db8::11\n");
+ check_getnameinfo ("2001:db8::11",
+ "unique-0.cnames-1.addresses-1.example");
+ check_gethostbyaddr ("2001:db8::12",
+ "name: unique-0.cnames-1.addresses-2.example\n"
+ "address: 2001:db8::12\n");
+ check_getnameinfo ("2001:db8::12",
+ "unique-0.cnames-1.addresses-2.example");
+ check_gethostbyaddr ("2001:db8::21",
+ "name: unique-0.cnames-2.addresses-1.example\n"
+ "address: 2001:db8::21\n");
+ check_getnameinfo ("2001:db8::21",
+ "unique-0.cnames-2.addresses-1.example");
+ check_gethostbyaddr ("2001:db8::22",
+ "name: unique-0.cnames-2.addresses-2.example\n"
+ "address: 2001:db8::22\n");
+ check_getnameinfo ("2001:db8::22",
+ "unique-0.cnames-2.addresses-2.example");
+ }
+
+ resolv_test_end (obj);
+
+ support_next_to_fault_free (&ntf);
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/resolv/tst-resolv-invalid-cname.c b/resolv/tst-resolv-invalid-cname.c
new file mode 100644
index 0000000000..63dac90e02
--- /dev/null
+++ b/resolv/tst-resolv-invalid-cname.c
@@ -0,0 +1,406 @@
+/* Test handling of CNAMEs with non-host domain names (bug 12154).
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <netdb.h>
+#include <resolv.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/check_nss.h>
+#include <support/resolv_test.h>
+#include <support/support.h>
+#include <support/xmemstream.h>
+
+/* Query strings describe the CNAME chain in the response. They have
+ the format "bitsBITS.countCOUNT.example.", where BITS and COUNT are
+ replaced by unsigned decimal numbers. COUNT is the number of CNAME
+ records in the response. BITS has two bits for each CNAME record,
+ describing a special prefix that is added to that CNAME.
+
+ 0: No special leading label.
+ 1: Starting with "*.".
+ 2: Starting with "-x.".
+ 3: Starting with "star.*.".
+
+ The first CNAME in the response using the two least significant
+ bits.
+
+ For PTR queries, the QNAME format is different, it is either
+ COUNT.BITS.168.192.in-addr.arpa. (with BITS and COUNT still
+ decimal), or:
+
+COUNT.BITS0.BITS1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa.
+
+ where BITS and COUNT are hexadecimal. */
+
+static void
+response (const struct resolv_response_context *ctx,
+ struct resolv_response_builder *b,
+ const char *qname, uint16_t qclass, uint16_t qtype)
+{
+ TEST_COMPARE (qclass, C_IN);
+
+ /* The only other query type besides A is PTR. */
+ if (qtype != T_A && qtype != T_AAAA)
+ TEST_COMPARE (qtype, T_PTR);
+
+ unsigned int bits, bits1, count;
+ char *tail = NULL;
+ if (sscanf (qname, "bits%u.count%u.%ms", &bits, &count, &tail) == 3)
+ TEST_COMPARE_STRING (tail, "example");
+ else if (strstr (qname, "in-addr.arpa") != NULL
+ && sscanf (qname, "%u.%u.%ms", &bits, &count, &tail) == 3)
+ TEST_COMPARE_STRING (tail, "168.192.in-addr.arpa");
+ else if (sscanf (qname, "%x.%x.%x.%ms", &bits, &bits1, &count, &tail) == 4)
+ {
+ TEST_COMPARE_STRING (tail, "\
+0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa");
+ bits |= bits1 << 4;
+ }
+ else
+ FAIL_EXIT1 ("invalid QNAME: %s\n", qname);
+ free (tail);
+
+ struct resolv_response_flags flags = {};
+ resolv_response_init (b, flags);
+ resolv_response_add_question (b, qname, qclass, qtype);
+ resolv_response_section (b, ns_s_an);
+
+ /* Provide the requested number of CNAME records. */
+ char *previous_name = (char *) qname;
+ unsigned int original_bits = bits;
+ for (int unique = 0; unique < count; ++unique)
+ {
+ resolv_response_open_record (b, previous_name, qclass, T_CNAME, 60);
+
+ static const char bits_to_prefix[4][8] = { "", "*.", "-x.", "star.*." };
+ char *new_name = xasprintf ("%sunique%d.example",
+ bits_to_prefix[bits & 3], unique);
+ bits >>= 2;
+ resolv_response_add_name (b, new_name);
+ resolv_response_close_record (b);
+
+ if (previous_name != qname)
+ free (previous_name);
+ previous_name = new_name;
+ }
+
+ /* Actual answer record. */
+ resolv_response_open_record (b, previous_name, qclass, qtype, 60);
+ switch (qtype)
+ {
+ case T_A:
+ {
+ char ipv4[4] = {192, 168, count, original_bits};
+ resolv_response_add_data (b, &ipv4, sizeof (ipv4));
+ }
+ break;
+ case T_AAAA:
+ {
+ char ipv6[16] =
+ {
+ 0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ count, original_bits
+ };
+ resolv_response_add_data (b, &ipv6, sizeof (ipv6));
+ }
+ break;
+
+ case T_PTR:
+ {
+ char *name = xasprintf ("bits%u.count%u.example",
+ original_bits, count);
+ resolv_response_add_name (b, name);
+ free (name);
+ }
+ break;
+ }
+ resolv_response_close_record (b);
+
+ if (previous_name != qname)
+ free (previous_name);
+}
+
+/* Controls which name resolution function is invoked. */
+enum test_mode
+ {
+ byname, /* gethostbyname. */
+ byname2, /* gethostbyname2. */
+ gai, /* getaddrinfo without AI_CANONNAME. */
+ gai_canon, /* getaddrinfo with AI_CANONNAME. */
+
+ test_mode_num /* Number of enum values. */
+ };
+
+static const char *
+test_mode_to_string (enum test_mode mode)
+{
+ switch (mode)
+ {
+ case byname:
+ return "byname";
+ case byname2:
+ return "byname2";
+ case gai:
+ return "gai";
+ case gai_canon:
+ return "gai_canon";
+ case test_mode_num:
+ break; /* Report error below. */
+ }
+ FAIL_EXIT1 ("invalid test_mode: %d", mode);
+}
+
+/* Append the name and aliases to OUT. */
+static void
+append_names (FILE *out, const char *qname, int bits, int count,
+ enum test_mode mode)
+{
+ /* Largest valid index which has a corresponding zero in bits
+ (meaning a syntactically valid CNAME). */
+ int last_valid_cname = -1;
+
+ for (int i = 0; i < count; ++i)
+ if ((bits & (3 << (i * 2))) == 0)
+ last_valid_cname = i;
+
+ if (mode != gai)
+ {
+ const char *label;
+ if (mode == gai_canon)
+ label = "canonname";
+ else
+ label = "name";
+ if (last_valid_cname >= 0)
+ fprintf (out, "%s: unique%d.example\n", label, last_valid_cname);
+ else
+ fprintf (out, "%s: %s\n", label, qname);
+ }
+
+ if (mode == byname || mode == byname2)
+ {
+ if (last_valid_cname >= 0)
+ fprintf (out, "alias: %s\n", qname);
+ for (int i = 0; i < count; ++i)
+ {
+ if ((bits & (3 << (i * 2))) == 0 && i != last_valid_cname)
+ fprintf (out, "alias: unique%d.example\n", i);
+ }
+ }
+}
+
+/* Append the address information to OUT. */
+static void
+append_addresses (FILE *out, int af, int bits, int count, enum test_mode mode)
+{
+ int last = count * 256 + bits;
+ if (mode == gai || mode == gai_canon)
+ {
+ if (af == AF_INET || af == AF_UNSPEC)
+ fprintf (out, "address: STREAM/TCP 192.168.%d.%d 80\n", count, bits);
+ if (af == AF_INET6 || af == AF_UNSPEC)
+ {
+ if (last == 0)
+ fprintf (out, "address: STREAM/TCP 2001:db8:: 80\n");
+ else
+ fprintf (out, "address: STREAM/TCP 2001:db8::%x 80\n", last);
+ }
+ }
+ else
+ {
+ TEST_VERIFY (af != AF_UNSPEC);
+ if (af == AF_INET)
+ fprintf (out, "address: 192.168.%d.%d\n", count, bits);
+ if (af == AF_INET6)
+ {
+ if (last == 0)
+ fprintf (out, "address: 2001:db8::\n");
+ else
+ fprintf (out, "address: 2001:db8::%x\n", last);
+ }
+ }
+}
+
+/* Perform one test using a forward lookup. */
+static void
+check_forward (int af, int bits, int count, enum test_mode mode)
+{
+ char *qname = xasprintf ("bits%d.count%d.example", bits, count);
+ char *label = xasprintf ("af=%d bits=%d count=%d mode=%s qname=%s",
+ af, bits, count, test_mode_to_string (mode), qname);
+
+ struct xmemstream expected;
+ xopen_memstream (&expected);
+ if (mode == gai_canon)
+ fprintf (expected.out, "flags: AI_CANONNAME\n");
+ append_names (expected.out, qname, bits, count, mode);
+ append_addresses (expected.out, af, bits, count, mode);
+ xfclose_memstream (&expected);
+
+ if (mode == gai || mode == gai_canon)
+ {
+ struct addrinfo *ai;
+ struct addrinfo hints =
+ {
+ .ai_family = af,
+ .ai_socktype = SOCK_STREAM,
+ };
+ if (mode == gai_canon)
+ hints.ai_flags |= AI_CANONNAME;
+ int ret = getaddrinfo (qname, "80", &hints, &ai);
+ check_addrinfo (label, ai, ret, expected.buffer);
+ if (ret == 0)
+ freeaddrinfo (ai);
+ }
+ else
+ {
+ struct hostent *e;
+ if (mode == gai)
+ {
+ TEST_COMPARE (af, AF_INET);
+ e = gethostbyname (qname);
+ }
+ else
+ {
+ if (af != AF_INET)
+ TEST_COMPARE (af, AF_INET6);
+ e = gethostbyname2 (qname, af);
+ }
+ check_hostent (label, e, expected.buffer);
+ }
+
+ free (expected.buffer);
+ free (label);
+ free (qname);
+}
+
+/* Perform one check using a reverse lookup. */
+
+static void
+check_reverse (int af, int bits, int count)
+{
+ TEST_VERIFY (af == AF_INET || af == AF_INET6);
+
+ char *label = xasprintf ("af=%d bits=%d count=%d", af, bits, count);
+ char *fqdn = xasprintf ("bits%d.count%d.example", bits, count);
+
+ struct xmemstream expected;
+ xopen_memstream (&expected);
+ fprintf (expected.out, "name: %s\n", fqdn);
+ append_addresses (expected.out, af, bits, count, byname);
+ xfclose_memstream (&expected);
+
+ char addr[16] = { 0 };
+ socklen_t addrlen;
+ if (af == AF_INET)
+ {
+ addr[0] = 192;
+ addr[1] = 168;
+ addr[2] = count;
+ addr[3] = bits;
+ addrlen = 4;
+ }
+ else
+ {
+ addr[0] = 0x20;
+ addr[1] = 0x01;
+ addr[2] = 0x0d;
+ addr[3] = 0xb8;
+ addr[14] = count;
+ addr[15] = bits;
+ addrlen = 16;
+ }
+
+ struct hostent *e = gethostbyaddr (addr, addrlen, af);
+ check_hostent (label, e, expected.buffer);
+
+ /* getnameinfo check is different. There is no generic check_*
+ function for it. */
+ {
+ struct sockaddr_in sin = { };
+ struct sockaddr_in6 sin6 = { };
+ void *sa;
+ socklen_t salen;
+ if (af == AF_INET)
+ {
+ sin.sin_family = AF_INET;
+ memcpy (&sin.sin_addr, addr, addrlen);
+ sin.sin_port = htons (80);
+ sa = &sin;
+ salen = sizeof (sin);
+ }
+ else
+ {
+ sin6.sin6_family = AF_INET6;
+ memcpy (&sin6.sin6_addr, addr, addrlen);
+ sin6.sin6_port = htons (80);
+ sa = &sin6;
+ salen = sizeof (sin6);
+ }
+
+ char host[64];
+ char service[64];
+ int ret = getnameinfo (sa, salen, host,
+ sizeof (host), service, sizeof (service),
+ NI_NAMEREQD | NI_NUMERICSERV);
+ TEST_COMPARE (ret, 0);
+ TEST_COMPARE_STRING (host, fqdn);
+ TEST_COMPARE_STRING (service, "80");
+ }
+
+ free (expected.buffer);
+ free (fqdn);
+ free (label);
+}
+
+static int
+do_test (void)
+{
+ struct resolv_test *obj = resolv_test_start
+ ((struct resolv_redirect_config)
+ {
+ .response_callback = response
+ });
+
+ for (int count = 0; count <= 3; ++count)
+ for (int bits = 0; bits <= 1 << (count * 2); ++bits)
+ {
+ if (count > 0 && bits == count)
+ /* The last bits value is only checked if count == 0. */
+ continue;
+
+ for (enum test_mode mode = 0; mode < test_mode_num; ++mode)
+ {
+ check_forward (AF_INET, bits, count, mode);
+ if (mode != byname)
+ check_forward (AF_INET6, bits, count, mode);
+ if (mode == gai || mode == gai_canon)
+ check_forward (AF_UNSPEC, bits, count, mode);
+ }
+
+ check_reverse (AF_INET, bits, count);
+ check_reverse (AF_INET6, bits, count);
+ }
+
+ resolv_test_end (obj);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/resolv/tst-resolv-maybe_insert_sig.h b/resolv/tst-resolv-maybe_insert_sig.h
new file mode 100644
index 0000000000..05725225af
--- /dev/null
+++ b/resolv/tst-resolv-maybe_insert_sig.h
@@ -0,0 +1,32 @@
+/* Code snippet for optionally inserting ignored SIG records in resolver tests.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* Set to true for an alternative pass that inserts (ignored) SIG
+ records. This does not alter the response, so this property is not
+ encoded in the QNAME. The variable needs to be volatile because
+ leaf attributes tell GCC that the response function is not
+ called. */
+static volatile bool insert_sig;
+
+static void
+maybe_insert_sig (struct resolv_response_builder *b, const char *owner)
+{
+ resolv_response_open_record (b, owner, C_IN, T_SIG, 60);
+ resolv_response_add_data (b, "", 1);
+ resolv_response_close_record (b);
+}
diff --git a/scripts/dso-ordering-test.py b/scripts/dso-ordering-test.py
index 2dd6bfda18..b87cf2f809 100644
--- a/scripts/dso-ordering-test.py
+++ b/scripts/dso-ordering-test.py
@@ -707,13 +707,12 @@ def process_testcase(t):
"\t$(compile.c) $(OUTPUT_OPTION)\n")
makefile.write (rule)
- not_depended_objs = find_objs_not_depended_on(test_descr)
- if not_depended_objs:
- depstr = ""
- for dep in not_depended_objs:
- depstr += (" $(objpfx)" + test_subdir + "/"
- + test_name + "-" + dep + ".so")
- makefile.write("$(objpfx)%s.out:%s\n" % (base_test_name, depstr))
+ # Ensure that all shared objects are built before running the
+ # test, whether there link-time dependencies or not.
+ depobjs = ["$(objpfx){}/{}-{}.so".format(test_subdir, test_name, dep)
+ for dep in test_descr.objs]
+ makefile.write("$(objpfx){}.out: {}\n".format(
+ base_test_name, " ".join(depobjs)))
# Add main executable to test-srcs
makefile.write("test-srcs += %s/%s\n" % (test_subdir, test_name))
diff --git a/scripts/glibcextract.py b/scripts/glibcextract.py
index 43ab58ffe2..36d204c9b0 100644
--- a/scripts/glibcextract.py
+++ b/scripts/glibcextract.py
@@ -17,6 +17,7 @@
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
+import collections
import os.path
import re
import subprocess
@@ -173,3 +174,21 @@ def compare_macro_consts(source_1, source_2, cc, macro_re, exclude_re=None,
if not allow_extra_2:
ret = 1
return ret
+
+CompileResult = collections.namedtuple("CompileResult", "returncode output")
+
+def compile_c_snippet(snippet, cc, extra_cc_args=''):
+ """Compile and return whether the SNIPPET can be build with CC along
+ EXTRA_CC_ARGS compiler flags. Return a CompileResult with RETURNCODE
+ being 0 for success, or the failure value and the compiler output.
+ """
+ with tempfile.TemporaryDirectory() as temp_dir:
+ c_file_name = os.path.join(temp_dir, 'test.c')
+ obj_file_name = os.path.join(temp_dir, 'test.o')
+ with open(c_file_name, 'w') as c_file:
+ c_file.write(snippet + '\n')
+ cmd = cc.split() + extra_cc_args.split() + ['-c', '-o', obj_file_name,
+ c_file_name]
+ r = subprocess.run(cmd, check=False, stdout=subprocess.PIPE,
+ stderr=subprocess.STDOUT)
+ return CompileResult(r.returncode, r.stdout)
diff --git a/socket/Makefile b/socket/Makefile
index 156eec6c85..2bde78387f 100644
--- a/socket/Makefile
+++ b/socket/Makefile
@@ -34,6 +34,7 @@ routines := accept bind connect getpeername getsockname getsockopt \
tests := \
tst-accept4 \
tst-sockopt \
+ tst-cmsghdr \
# tests
tests-internal := \
diff --git a/socket/tst-cmsghdr-skeleton.c b/socket/tst-cmsghdr-skeleton.c
new file mode 100644
index 0000000000..4c6898569b
--- /dev/null
+++ b/socket/tst-cmsghdr-skeleton.c
@@ -0,0 +1,92 @@
+/* Test ancillary data header creation.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* We use the preprocessor to generate the function/macro tests instead of
+ using indirection because having all the macro expansions alongside
+ each other lets the compiler warn us about suspicious pointer
+ arithmetic across subsequent CMSG_{FIRST,NXT}HDR expansions. */
+
+#include <stdint.h>
+
+#define RUN_TEST_CONCAT(suffix) run_test_##suffix
+#define RUN_TEST_FUNCNAME(suffix) RUN_TEST_CONCAT (suffix)
+
+static void
+RUN_TEST_FUNCNAME (CMSG_NXTHDR_IMPL) (void)
+{
+ struct msghdr m = {0};
+ struct cmsghdr *cmsg;
+ char cmsgbuf[3 * CMSG_SPACE (sizeof (PAYLOAD))] = {0};
+
+ m.msg_control = cmsgbuf;
+ m.msg_controllen = sizeof (cmsgbuf);
+
+ /* First header should point to the start of the buffer. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+
+ /* If the first header length consumes the entire buffer, there is no
+ space remaining for additional headers. */
+ cmsg->cmsg_len = sizeof (cmsgbuf);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ /* The first header length is so big, using it would cause an overflow. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len = SIZE_MAX;
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ /* The first header leaves just enough space to hold another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len = sizeof (cmsgbuf) - sizeof (struct cmsghdr);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+
+ /* The first header leaves space but not enough for another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len ++;
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ /* The second header leaves just enough space to hold another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg->cmsg_len = CMSG_LEN (sizeof (PAYLOAD));
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+ cmsg->cmsg_len = sizeof (cmsgbuf)
+ - CMSG_SPACE (sizeof (PAYLOAD)) /* First header. */
+ - sizeof (struct cmsghdr);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+
+ /* The second header leaves space but not enough for another header. */
+ cmsg = CMSG_FIRSTHDR (&m);
+ TEST_VERIFY_EXIT ((char *) cmsg == cmsgbuf);
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg != NULL);
+ cmsg->cmsg_len ++;
+ cmsg = CMSG_NXTHDR_IMPL (&m, cmsg);
+ TEST_VERIFY_EXIT (cmsg == NULL);
+
+ return;
+}
diff --git a/socket/tst-cmsghdr.c b/socket/tst-cmsghdr.c
new file mode 100644
index 0000000000..68c96d3c9d
--- /dev/null
+++ b/socket/tst-cmsghdr.c
@@ -0,0 +1,56 @@
+/* Test ancillary data header creation.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <sys/socket.h>
+#include <gnu/lib-names.h>
+#include <support/xdlfcn.h>
+#include <support/check.h>
+
+#define PAYLOAD "Hello, World!"
+
+/* CMSG_NXTHDR is a macro that calls an inline function defined in
+ bits/socket.h. In case the function cannot be inlined, libc.so carries
+ a copy. Both versions need to be tested. */
+
+#define CMSG_NXTHDR_IMPL CMSG_NXTHDR
+#include "tst-cmsghdr-skeleton.c"
+#undef CMSG_NXTHDR_IMPL
+
+static struct cmsghdr * (* cmsg_nxthdr) (struct msghdr *, struct cmsghdr *);
+
+#define CMSG_NXTHDR_IMPL cmsg_nxthdr
+#include "tst-cmsghdr-skeleton.c"
+#undef CMSG_NXTHDR_IMPL
+
+static int
+do_test (void)
+{
+ static void *handle;
+
+ run_test_CMSG_NXTHDR ();
+
+ handle = xdlopen (LIBC_SO, RTLD_LAZY);
+ cmsg_nxthdr = (struct cmsghdr * (*) (struct msghdr *, struct cmsghdr *))
+ xdlsym (handle, "__cmsg_nxthdr");
+
+ run_test_cmsg_nxthdr ();
+
+ return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/stdlib/arc4random.c b/stdlib/arc4random.c
index e417ef624d..960a38f295 100644
--- a/stdlib/arc4random.c
+++ b/stdlib/arc4random.c
@@ -34,7 +34,7 @@ void
__arc4random_buf (void *p, size_t n)
{
static int seen_initialized;
- size_t l;
+ ssize_t l;
int fd;
if (n == 0)
diff --git a/stdlib/longlong.h b/stdlib/longlong.h
index 9b89469ac2..d8f76a43b5 100644
--- a/stdlib/longlong.h
+++ b/stdlib/longlong.h
@@ -593,6 +593,18 @@ extern UDItype __umulsidi3 (USItype, USItype);
#define UMUL_TIME 14
#endif
+#ifdef __loongarch__
+# if W_TYPE_SIZE == 32
+# define count_leading_zeros(count, x) ((count) = __builtin_clz (x))
+# define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
+# define COUNT_LEADING_ZEROS_0 32
+# elif W_TYPE_SIZE == 64
+# define count_leading_zeros(count, x) ((count) = __builtin_clzll (x))
+# define count_trailing_zeros(count, x) ((count) = __builtin_ctzll (x))
+# define COUNT_LEADING_ZEROS_0 64
+# endif
+#endif
+
#if defined (__M32R__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
/* The cmp clears the condition bit. */ \
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 050a3032de..6b256b8388 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -1048,9 +1048,11 @@ extern void _dl_init (struct link_map *main_map, int argc, char **argv,
initializer functions have completed. */
extern void _dl_fini (void) attribute_hidden;
-/* Sort array MAPS according to dependencies of the contained objects. */
+/* Sort array MAPS according to dependencies of the contained objects.
+ If FORCE_FIRST, MAPS[0] keeps its place even if the dependencies
+ say otherwise. */
extern void _dl_sort_maps (struct link_map **maps, unsigned int nmaps,
- unsigned int skip, bool for_fini) attribute_hidden;
+ bool force_first, bool for_fini) attribute_hidden;
/* The dynamic linker calls this function before and having changing
any shared object mappings. The `r_state' member of `struct r_debug'
diff --git a/sysdeps/generic/libc-lock-arch.h b/sysdeps/generic/libc-lock-arch.h
new file mode 100644
index 0000000000..4713b30a8a
--- /dev/null
+++ b/sysdeps/generic/libc-lock-arch.h
@@ -0,0 +1,25 @@
+/* Private libc-internal arch-specific definitions. Generic version.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, see <https://www.gnu.org/licenses/>. */
+
+#ifndef _LIBC_LOCK_ARCH_H
+#define _LIBC_LOCK_ARCH_H
+
+/* The default definition uses the natural alignment from the lock type. */
+#define __LIBC_LOCK_ALIGNMENT
+
+#endif
diff --git a/sysdeps/hppa/dl-machine.h b/sysdeps/hppa/dl-machine.h
index c865713be1..1d51948566 100644
--- a/sysdeps/hppa/dl-machine.h
+++ b/sysdeps/hppa/dl-machine.h
@@ -347,6 +347,16 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
its return value is the user program's entry point. */
#define RTLD_START \
+/* Set up dp for any non-PIC lib constructors that may be called. */ \
+static struct link_map * __attribute__((used)) \
+set_dp (struct link_map *map) \
+{ \
+ register Elf32_Addr dp asm ("%r27"); \
+ dp = D_PTR (map, l_info[DT_PLTGOT]); \
+ asm volatile ("" : : "r" (dp)); \
+ return map; \
+} \
+ \
asm ( \
" .text\n" \
" .globl _start\n" \
@@ -426,6 +436,13 @@ asm ( \
direct loader invocation. Thus, argc and argv must be \
reloaded from from _dl_argc and _dl_argv. */ \
\
+ /* Load main_map from _rtld_local and setup dp. */ \
+" addil LT'_rtld_local,%r19\n" \
+" ldw RT'_rtld_local(%r1),%r26\n" \
+" bl set_dp, %r2\n" \
+" ldw 0(%r26),%r26\n" \
+" copy %ret0,%r26\n" \
+ \
/* Load argc from _dl_argc. */ \
" addil LT'_dl_argc,%r19\n" \
" ldw RT'_dl_argc(%r1),%r20\n" \
@@ -438,13 +455,10 @@ asm ( \
" ldw 0(%r20),%r24\n" \
" stw %r24,-44(%sp)\n" \
\
- /* Call _dl_init(main_map, argc, argv, envp). */ \
-" addil LT'_rtld_local,%r19\n" \
-" ldw RT'_rtld_local(%r1),%r26\n" \
-" ldw 0(%r26),%r26\n" \
- \
/* envp = argv + argc + 1 */ \
" sh2add %r25,%r24,%r23\n" \
+ \
+ /* Call _dl_init(main_map, argc, argv, envp). */ \
" bl _dl_init,%r2\n" \
" ldo 4(%r23),%r23\n" /* delay slot */ \
\
diff --git a/sysdeps/ieee754/ldbl-128/e_j1l.c b/sysdeps/ieee754/ldbl-128/e_j1l.c
index 54c457681a..9a9c5c6f00 100644
--- a/sysdeps/ieee754/ldbl-128/e_j1l.c
+++ b/sysdeps/ieee754/ldbl-128/e_j1l.c
@@ -869,10 +869,13 @@ __ieee754_y1l (_Float128 x)
{
/* 0 <= x <= 2 */
SET_RESTORE_ROUNDL (FE_TONEAREST);
+ xx = math_opt_barrier (xx);
+ x = math_opt_barrier (x);
z = xx * xx;
p = xx * neval (z, Y0_2N, NY0_2N) / deval (z, Y0_2D, NY0_2D);
p = -TWOOPI / xx + p;
p = TWOOPI * __ieee754_logl (x) * __ieee754_j1l (x) + p;
+ math_force_eval (p);
return p;
}
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_j1l.c b/sysdeps/ieee754/ldbl-128ibm/e_j1l.c
index f85ba94466..0a5fe68342 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_j1l.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_j1l.c
@@ -792,10 +792,13 @@ __ieee754_y1l (long double x)
{
/* 0 <= x <= 2 */
SET_RESTORE_ROUNDL (FE_TONEAREST);
+ xx = math_opt_barrier (xx);
+ x = math_opt_barrier (x);
z = xx * xx;
p = xx * neval (z, Y0_2N, NY0_2N) / deval (z, Y0_2D, NY0_2D);
p = -TWOOPI / xx + p;
p = TWOOPI * __ieee754_logl (x) * __ieee754_j1l (x) + p;
+ math_force_eval (p);
return p;
}
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_llroundl.c b/sysdeps/ieee754/ldbl-128ibm/s_llroundl.c
index d85154e73a..d8c0de1faf 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_llroundl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_llroundl.c
@@ -66,38 +66,35 @@ __llroundl (long double x)
/* Peg at max/min values, assuming that the above conversions do so.
Strictly speaking, we can return anything for values that overflow,
but this is more useful. */
- res = hi + lo;
-
- /* This is just sign(hi) == sign(lo) && sign(res) != sign(hi). */
- if (__glibc_unlikely (((~(hi ^ lo) & (res ^ hi)) < 0)))
+ if (__glibc_unlikely (__builtin_add_overflow (hi, lo, &res)))
goto overflow;
xh -= lo;
ldbl_canonicalize (&xh, &xl);
- hi = res;
if (xh > 0.5)
{
- res += 1;
+ if (__glibc_unlikely (__builtin_add_overflow (res, 1, &res)))
+ goto overflow;
}
else if (xh == 0.5)
{
if (xl > 0.0 || (xl == 0.0 && res >= 0))
- res += 1;
+ if (__glibc_unlikely (__builtin_add_overflow (res, 1, &res)))
+ goto overflow;
}
else if (-xh > 0.5)
{
- res -= 1;
+ if (__glibc_unlikely (__builtin_add_overflow (res, -1, &res)))
+ goto overflow;
}
else if (-xh == 0.5)
{
if (xl < 0.0 || (xl == 0.0 && res <= 0))
- res -= 1;
+ if (__glibc_unlikely (__builtin_add_overflow (res, -1, &res)))
+ goto overflow;
}
- if (__glibc_unlikely (((~(hi ^ (res - hi)) & (res ^ hi)) < 0)))
- goto overflow;
-
return res;
}
else
diff --git a/sysdeps/mach/hurd/bits/socket.h b/sysdeps/mach/hurd/bits/socket.h
index 5b35ea81ec..70fce4fb27 100644
--- a/sysdeps/mach/hurd/bits/socket.h
+++ b/sysdeps/mach/hurd/bits/socket.h
@@ -249,6 +249,12 @@ struct cmsghdr
+ CMSG_ALIGN (sizeof (struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
+/* Given a length, return the additional padding necessary such that
+ len + __CMSG_PADDING(len) == CMSG_ALIGN (len). */
+#define __CMSG_PADDING(len) ((sizeof (size_t) \
+ - ((len) & (sizeof (size_t) - 1))) \
+ & (sizeof (size_t) - 1))
+
extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
struct cmsghdr *__cmsg) __THROW;
#ifdef __USE_EXTERN_INLINES
@@ -258,18 +264,38 @@ extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
_EXTERN_INLINE struct cmsghdr *
__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
{
+ /* We may safely assume that __cmsg lies between __mhdr->msg_control and
+ __mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of __cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * __msg_control_ptr = (unsigned char *) __mhdr->msg_control;
+ unsigned char * __cmsg_ptr = (unsigned char *) __cmsg;
+
+ size_t __size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (__cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
return (struct cmsghdr *) 0;
+ /* There isn't enough space between __cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr)
+ < __size_needed)
+ || ((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr
+ - __size_needed)
+ < __cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+
+ /* Now, we trust cmsg_len and can use it to find the next header. */
__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg->cmsg_len));
- if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
- + __mhdr->msg_controllen)
- || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
- > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
- /* No more entries. */
- return (struct cmsghdr *) 0;
return __cmsg;
}
#endif /* Use `extern inline'. */
diff --git a/sysdeps/nptl/libc-lock.h b/sysdeps/nptl/libc-lock.h
index 5af476c48b..63b3f3d75c 100644
--- a/sysdeps/nptl/libc-lock.h
+++ b/sysdeps/nptl/libc-lock.h
@@ -22,6 +22,7 @@
#include <pthread.h>
#define __need_NULL
#include <stddef.h>
+#include <libc-lock-arch.h>
/* Mutex type. */
@@ -29,7 +30,12 @@
# if (!IS_IN (libc) && !IS_IN (libpthread)) || !defined _LIBC
typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t;
# else
-typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t;
+typedef struct
+{
+ int lock __LIBC_LOCK_ALIGNMENT;
+ int cnt;
+ void *owner;
+} __libc_lock_recursive_t;
# endif
#else
typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
diff --git a/sysdeps/nptl/libc-lockP.h b/sysdeps/nptl/libc-lockP.h
index d3a6837fd2..425f514c5c 100644
--- a/sysdeps/nptl/libc-lockP.h
+++ b/sysdeps/nptl/libc-lockP.h
@@ -32,9 +32,10 @@
ld.so might be used on old kernels with a different libc.so. */
#include <lowlevellock.h>
#include <tls.h>
+#include <libc-lock-arch.h>
/* Mutex type. */
-typedef int __libc_lock_t;
+typedef int __libc_lock_t __LIBC_LOCK_ALIGNMENT;
typedef struct { pthread_mutex_t mutex; } __rtld_lock_recursive_t;
typedef pthread_rwlock_t __libc_rwlock_t;
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index bcff909b2f..5cda9bb072 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -540,11 +540,11 @@ get_nscd_addresses (const char *name, const struct addrinfo *req,
at[count].addr[2] = htonl (0xffff);
}
else if (req->ai_family == AF_UNSPEC
- || air->family[count] == req->ai_family)
+ || air->family[i] == req->ai_family)
{
- at[count].family = air->family[count];
+ at[count].family = air->family[i];
memcpy (at[count].addr, addrs, size);
- if (air->family[count] == AF_INET6)
+ if (air->family[i] == AF_INET6)
res->got_ipv6 = true;
}
at[count].next = at + count + 1;
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index a139a16532..3ceda9fdbf 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -265,6 +265,14 @@ $(objpfx)tst-mount-consts.out: ../sysdeps/unix/sysv/linux/tst-mount-consts.py
< /dev/null > $@ 2>&1; $(evaluate-test)
$(objpfx)tst-mount-consts.out: $(sysdeps-linux-python-deps)
+tests-special += $(objpfx)tst-mount-compile.out
+$(objpfx)tst-mount-compile.out: ../sysdeps/unix/sysv/linux/tst-mount-compile.py
+ $(sysdeps-linux-python) \
+ ../sysdeps/unix/sysv/linux/tst-mount-compile.py \
+ $(sysdeps-linux-python-cc) \
+ < /dev/null > $@ 2>&1; $(evaluate-test)
+$(objpfx)tst-mount-compile.out: $(sysdeps-linux-python-deps)
+
tst-rseq-disable-ENV = GLIBC_TUNABLES=glibc.pthread.rseq=0
endif # $(subdir) == misc
diff --git a/sysdeps/unix/sysv/linux/alpha/brk_call.h b/sysdeps/unix/sysv/linux/alpha/brk_call.h
index b8088cf13f..0b851b6c86 100644
--- a/sysdeps/unix/sysv/linux/alpha/brk_call.h
+++ b/sysdeps/unix/sysv/linux/alpha/brk_call.h
@@ -21,8 +21,7 @@ __brk_call (void *addr)
{
unsigned long int result = INTERNAL_SYSCALL_CALL (brk, addr);
if (result == -ENOMEM)
- /* Mimic the default error reporting behavior. */
- return addr;
- else
- return (void *) result;
+ /* Mimic the generic error reporting behavior. */
+ result = INTERNAL_SYSCALL_CALL (brk, 0);
+ return (void *) result;
}
diff --git a/sysdeps/unix/sysv/linux/arm/bits/struct_stat.h b/sysdeps/unix/sysv/linux/arm/bits/struct_stat.h
new file mode 100644
index 0000000000..30ee6279d2
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/bits/struct_stat.h
@@ -0,0 +1,139 @@
+/* Definition for struct stat. Linux/arm version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ unsigned short int __pad1;
+# ifndef __USE_FILE_OFFSET64
+ __ino_t st_ino; /* File serial number. */
+# else
+ __ino_t __st_ino; /* 32bit file serial number. */
+# endif
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned short int __pad2;
+# ifndef __USE_FILE_OFFSET64
+ __off_t st_size; /* Size of file, in bytes. */
+# else
+ __off64_t st_size; /* Size of file, in bytes. */
+# endif
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+# ifndef __USE_FILE_OFFSET64
+ __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
+# else
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# endif
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+# ifndef __USE_FILE_OFFSET64
+ unsigned long int __glibc_reserved4;
+ unsigned long int __glibc_reserved5;
+# else
+ __ino64_t st_ino; /* File serial number. */
+# endif
+#endif /* __USE_TIME_BITS64 */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ unsigned int __pad1;
+
+ __ino_t __st_ino; /* 32bit file serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned int __pad2;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ __ino64_t st_ino; /* File serial number. */
+# endif /* __USE_TIME_BITS64 */
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+
+#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index 4f1f810ea1..539b8d7716 100644
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -307,6 +307,12 @@ struct cmsghdr
+ CMSG_ALIGN (sizeof (struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
+/* Given a length, return the additional padding necessary such that
+ len + __CMSG_PADDING(len) == CMSG_ALIGN (len). */
+#define __CMSG_PADDING(len) ((sizeof (size_t) \
+ - ((len) & (sizeof (size_t) - 1))) \
+ & (sizeof (size_t) - 1))
+
extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
struct cmsghdr *__cmsg) __THROW;
#ifdef __USE_EXTERN_INLINES
@@ -316,18 +322,38 @@ extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
_EXTERN_INLINE struct cmsghdr *
__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
{
+ /* We may safely assume that __cmsg lies between __mhdr->msg_control and
+ __mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of __cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * __msg_control_ptr = (unsigned char *) __mhdr->msg_control;
+ unsigned char * __cmsg_ptr = (unsigned char *) __cmsg;
+
+ size_t __size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (__cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
return (struct cmsghdr *) 0;
+ /* There isn't enough space between __cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr)
+ < __size_needed)
+ || ((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr
+ - __size_needed)
+ < __cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+
+ /* Now, we trust cmsg_len and can use it to find the next header. */
__cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ CMSG_ALIGN (__cmsg->cmsg_len));
- if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
- + __mhdr->msg_controllen)
- || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
- > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
- /* No more entries. */
- return (struct cmsghdr *) 0;
return __cmsg;
}
#endif /* Use `extern inline'. */
diff --git a/sysdeps/unix/sysv/linux/bits/struct_stat.h b/sysdeps/unix/sysv/linux/bits/struct_stat.h
index 25bd6cb638..fb11a3fba4 100644
--- a/sysdeps/unix/sysv/linux/bits/struct_stat.h
+++ b/sysdeps/unix/sysv/linux/bits/struct_stat.h
@@ -26,37 +26,36 @@
#include <bits/endian.h>
#include <bits/wordsize.h>
-struct stat
- {
-#ifdef __USE_TIME_BITS64
-# include <bits/struct_stat_time64_helper.h>
-#else
- __dev_t st_dev; /* Device. */
- unsigned short int __pad1;
-# ifndef __USE_FILE_OFFSET64
- __ino_t st_ino; /* File serial number. */
-# else
- __ino_t __st_ino; /* 32bit file serial number. */
+#if defined __USE_FILE_OFFSET64
+# define __field64(type, type64, name) type64 name
+#elif __WORDSIZE == 64 || defined __INO_T_MATCHES_INO64_T
+# if defined __INO_T_MATCHES_INO64_T && !defined __OFF_T_MATCHES_OFF64_T
+# error "ino_t and off_t must both be the same type"
# endif
- __mode_t st_mode; /* File mode. */
- __nlink_t st_nlink; /* Link count. */
- __uid_t st_uid; /* User ID of the file's owner. */
- __gid_t st_gid; /* Group ID of the file's group.*/
- __dev_t st_rdev; /* Device number, if device. */
- unsigned short int __pad2;
-# ifndef __USE_FILE_OFFSET64
- __off_t st_size; /* Size of file, in bytes. */
-# else
- __off64_t st_size; /* Size of file, in bytes. */
-# endif
- __blksize_t st_blksize; /* Optimal block size for I/O. */
+# define __field64(type, type64, name) type name
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+# define __field64(type, type64, name) \
+ type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
+#else
+# define __field64(type, type64, name) \
+ int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
+#endif
-# ifndef __USE_FILE_OFFSET64
- __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
-# else
- __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
-# endif
-# ifdef __USE_XOPEN2K8
+struct stat
+ {
+ __dev_t st_dev; /* Device. */
+ __field64(__ino_t, __ino64_t, st_ino); /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __field64(__off_t, __off64_t, st_size); /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __field64(__blkcnt_t, __blkcnt64_t, st_blocks); /* 512-byte blocks */
+#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -66,47 +65,38 @@ struct stat
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-# define st_atime st_atim.tv_sec /* Backward compatibility. */
-# define st_mtime st_mtim.tv_sec
-# define st_ctime st_ctim.tv_sec
-# else
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-# endif
-# ifndef __USE_FILE_OFFSET64
- unsigned long int __glibc_reserved4;
- unsigned long int __glibc_reserved5;
-# else
- __ino64_t st_ino; /* File serial number. */
-# endif
-#endif /* __USE_TIME_BITS64 */
+#endif
+ int __glibc_reserved[2];
};
+#undef __field64
+
#ifdef __USE_LARGEFILE64
struct stat64
{
-# ifdef __USE_TIME_BITS64
-# include <bits/struct_stat_time64_helper.h>
-# else
- __dev_t st_dev; /* Device. */
- unsigned int __pad1;
-
- __ino_t __st_ino; /* 32bit file serial number. */
- __mode_t st_mode; /* File mode. */
- __nlink_t st_nlink; /* Link count. */
- __uid_t st_uid; /* User ID of the file's owner. */
- __gid_t st_gid; /* Group ID of the file's group.*/
- __dev_t st_rdev; /* Device number, if device. */
- unsigned int __pad2;
- __off64_t st_size; /* Size of file, in bytes. */
- __blksize_t st_blksize; /* Optimal block size for I/O. */
-
- __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
-# ifdef __USE_XOPEN2K8
+ __dev_t st_dev; /* Device. */
+ __ino64_t st_ino; /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
+#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -116,16 +106,15 @@ struct stat64
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-# else
+#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-# endif
- __ino64_t st_ino; /* File serial number. */
-# endif /* __USE_TIME_BITS64 */
+#endif
+ int __glibc_reserved[2];
};
#endif
@@ -135,5 +124,4 @@ struct stat64
/* Nanosecond resolution time values are supported. */
#define _STATBUF_ST_NSEC
-
#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
index 15b7a3a925..24f72b797a 100644
--- a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
+++ b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
@@ -23,18 +23,38 @@
struct cmsghdr *
__cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg)
{
+ /* We may safely assume that cmsg lies between mhdr->msg_control and
+ mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * msg_control_ptr = (unsigned char *) mhdr->msg_control;
+ unsigned char * cmsg_ptr = (unsigned char *) cmsg;
+
+ size_t size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
if ((size_t) cmsg->cmsg_len < sizeof (struct cmsghdr))
- /* The kernel header does this so there may be a reason. */
- return NULL;
+ return (struct cmsghdr *) 0;
+
+ /* There isn't enough space between cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (msg_control_ptr + mhdr->msg_controllen - cmsg_ptr)
+ < size_needed)
+ || ((size_t)
+ (msg_control_ptr + mhdr->msg_controllen - cmsg_ptr
+ - size_needed)
+ < cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+ /* Now, we trust cmsg_len and can use it to find the next header. */
cmsg = (struct cmsghdr *) ((unsigned char *) cmsg
+ CMSG_ALIGN (cmsg->cmsg_len));
- if ((unsigned char *) (cmsg + 1) > ((unsigned char *) mhdr->msg_control
- + mhdr->msg_controllen)
- || ((unsigned char *) cmsg + CMSG_ALIGN (cmsg->cmsg_len)
- > ((unsigned char *) mhdr->msg_control + mhdr->msg_controllen)))
- /* No more entries. */
- return NULL;
return cmsg;
}
libc_hidden_def (__cmsg_nxthdr)
diff --git a/sysdeps/unix/sysv/linux/generic/bits/struct_stat.h b/sysdeps/unix/sysv/linux/csky/bits/struct_stat.h
similarity index 92%
rename from sysdeps/unix/sysv/linux/generic/bits/struct_stat.h
rename to sysdeps/unix/sysv/linux/csky/bits/struct_stat.h
index fb11a3fba4..f0ee455748 100644
--- a/sysdeps/unix/sysv/linux/generic/bits/struct_stat.h
+++ b/sysdeps/unix/sysv/linux/csky/bits/struct_stat.h
@@ -1,4 +1,4 @@
-/* Definition for struct stat.
+/* Definition for struct stat. Linux/csky version.
Copyright (C) 2020-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -43,6 +43,9 @@
struct stat
{
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
__dev_t st_dev; /* Device. */
__field64(__ino_t, __ino64_t, st_ino); /* File serial number. */
__mode_t st_mode; /* File mode. */
@@ -55,7 +58,7 @@ struct stat
__blksize_t st_blksize; /* Optimal block size for I/O. */
int __pad2;
__field64(__blkcnt_t, __blkcnt64_t, st_blocks); /* 512-byte blocks */
-#ifdef __USE_XOPEN2K8
+# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -65,18 +68,19 @@ struct stat
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-# define st_atime st_atim.tv_sec /* Backward compatibility. */
-# define st_mtime st_mtim.tv_sec
-# define st_ctime st_ctim.tv_sec
-#else
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-#endif
+# endif
int __glibc_reserved[2];
+#endif
};
#undef __field64
@@ -84,6 +88,9 @@ struct stat
#ifdef __USE_LARGEFILE64
struct stat64
{
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
__dev_t st_dev; /* Device. */
__ino64_t st_ino; /* File serial number. */
__mode_t st_mode; /* File mode. */
@@ -96,7 +103,7 @@ struct stat64
__blksize_t st_blksize; /* Optimal block size for I/O. */
int __pad2;
__blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
-#ifdef __USE_XOPEN2K8
+# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
@@ -106,15 +113,16 @@ struct stat64
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
-#else
+# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
-#endif
+# endif
int __glibc_reserved[2];
+# endif
};
#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/struct_stat.h b/sysdeps/unix/sysv/linux/hppa/bits/struct_stat.h
new file mode 100644
index 0000000000..38b6e13e68
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/hppa/bits/struct_stat.h
@@ -0,0 +1,139 @@
+/* Definition for struct stat. Linux/hppa version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ unsigned short int __pad1;
+# ifndef __USE_FILE_OFFSET64
+ __ino_t st_ino; /* File serial number. */
+# else
+ __ino_t __st_ino; /* 32bit file serial number. */
+# endif
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned short int __pad2;
+# ifndef __USE_FILE_OFFSET64
+ __off_t st_size; /* Size of file, in bytes. */
+# else
+ __off64_t st_size; /* Size of file, in bytes. */
+# endif
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+# ifndef __USE_FILE_OFFSET64
+ __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
+# else
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# endif
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+# ifndef __USE_FILE_OFFSET64
+ unsigned long int __glibc_reserved4;
+ unsigned long int __glibc_reserved5;
+# else
+ __ino64_t st_ino; /* File serial number. */
+# endif
+#endif /* __USE_TIME_BITS64 */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ unsigned int __pad1;
+
+ __ino_t __st_ino; /* 32bit file serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned int __pad2;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ __ino64_t st_ino; /* File serial number. */
+# endif /* __USE_TIME_BITS64 */
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+
+#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/hppa/kernel-features.h b/sysdeps/unix/sysv/linux/hppa/kernel-features.h
index 0cd21ef0fa..079612e4aa 100644
--- a/sysdeps/unix/sysv/linux/hppa/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/hppa/kernel-features.h
@@ -30,3 +30,6 @@
#undef __ASSUME_CLONE_DEFAULT
#define __ASSUME_CLONE_BACKWARDS 1
+
+/* QEMU does not support set_robust_list. */
+#undef __ASSUME_SET_ROBUST_LIST
diff --git a/sysdeps/unix/sysv/linux/m68k/libc-lock-arch.h b/sysdeps/unix/sysv/linux/m68k/libc-lock-arch.h
new file mode 100644
index 0000000000..1844bbaf6f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/m68k/libc-lock-arch.h
@@ -0,0 +1,25 @@
+/* Private libc-internal arch-specific definitions. m68k version.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, see <https://www.gnu.org/licenses/>. */
+
+#ifndef _LIBC_LOCK_ARCH_H
+#define _LIBC_LOCK_ARCH_H
+
+/* Linux enforces 4-bytes alignment on futex inputs. */
+#define __LIBC_LOCK_ALIGNMENT __attribute__ ((__aligned__ (4)))
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/fstatat.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/fstatat.c
new file mode 100644
index 0000000000..fe6c3a0dda
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/fstatat.c
@@ -0,0 +1,51 @@
+/* Get file status. Linux/MIPSn64 version.
+ Copyright (C) 2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <sys/stat.h>
+#include <sysdep.h>
+
+/* Different than other ABIs, mips64 has different layouts for non-LFS
+ and LFS struct stat. */
+int
+__fstatat (int fd, const char *file, struct stat *buf, int flag)
+{
+ struct __stat64_t64 st64;
+ int r = __fstatat64_time64 (fd, file, &st64, flag);
+ if (r == 0)
+ {
+ /* Clear internal pad and reserved fields. */
+ memset (buf, 0, sizeof (*buf));
+
+ buf->st_dev = st64.st_dev;
+ buf->st_ino = st64.st_ino;
+ buf->st_mode = st64.st_mode;
+ buf->st_nlink = st64.st_nlink;
+ buf->st_uid = st64.st_uid;
+ buf->st_gid = st64.st_gid;
+ buf->st_rdev = st64.st_rdev;
+ buf->st_size = st64.st_size;
+ buf->st_blksize = st64.st_blksize;
+ buf->st_blocks = st64.st_blocks;
+ buf->st_atim = st64.st_atim;
+ buf->st_mtim = st64.st_mtim;
+ buf->st_ctim = st64.st_ctim;
+ }
+ return r;
+}
+
+weak_alias (__fstatat, fstatat)
diff --git a/sysdeps/unix/sysv/linux/nios2/bits/struct_stat.h b/sysdeps/unix/sysv/linux/nios2/bits/struct_stat.h
new file mode 100644
index 0000000000..e00e71173e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/bits/struct_stat.h
@@ -0,0 +1,135 @@
+/* Definition for struct stat. Linux/nios2 version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+#if defined __USE_FILE_OFFSET64
+# define __field64(type, type64, name) type64 name
+#elif __WORDSIZE == 64 || defined __INO_T_MATCHES_INO64_T
+# if defined __INO_T_MATCHES_INO64_T && !defined __OFF_T_MATCHES_OFF64_T
+# error "ino_t and off_t must both be the same type"
+# endif
+# define __field64(type, type64, name) type name
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+# define __field64(type, type64, name) \
+ type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
+#else
+# define __field64(type, type64, name) \
+ int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
+#endif
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ __field64(__ino_t, __ino64_t, st_ino); /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __field64(__off_t, __off64_t, st_size); /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __field64(__blkcnt_t, __blkcnt64_t, st_blocks); /* 512-byte blocks */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ int __glibc_reserved[2];
+#endif
+ };
+
+#undef __field64
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ __ino64_t st_ino; /* File serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ __dev_t __pad1;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+ int __pad2;
+ __blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ int __glibc_reserved[2];
+# endif
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index a263d294b1..cf35c8bfc9 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -68,7 +68,7 @@ __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
}
-static inline int
+static inline ssize_t
__getrandom_nocancel (void *buf, size_t buflen, unsigned int flags)
{
return INLINE_SYSCALL_CALL (getrandom, buf, buflen, flags);
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h b/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
index bf4be80f8d..202520ee25 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/arch-syscall.h
@@ -122,6 +122,7 @@
#define __NR_mbind 235
#define __NR_membarrier 283
#define __NR_memfd_create 279
+#define __NR_memfd_secret 447
#define __NR_migrate_pages 238
#define __NR_mincore 232
#define __NR_mkdirat 34
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h b/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
index d656aedcc2..4e65f337d4 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/arch-syscall.h
@@ -127,6 +127,7 @@
#define __NR_mbind 235
#define __NR_membarrier 283
#define __NR_memfd_create 279
+#define __NR_memfd_secret 447
#define __NR_migrate_pages 238
#define __NR_mincore 232
#define __NR_mkdirat 34
diff --git a/sysdeps/unix/sysv/linux/sh/bits/struct_stat.h b/sysdeps/unix/sysv/linux/sh/bits/struct_stat.h
new file mode 100644
index 0000000000..0f7c9cdc89
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sh/bits/struct_stat.h
@@ -0,0 +1,139 @@
+/* Definition for struct stat. Linux/sh version.
+ Copyright (C) 2020-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/struct_stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STRUCT_STAT_H
+#define _BITS_STRUCT_STAT_H 1
+
+#include <bits/endian.h>
+#include <bits/wordsize.h>
+
+struct stat
+ {
+#ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+#else
+ __dev_t st_dev; /* Device. */
+ unsigned short int __pad1;
+# ifndef __USE_FILE_OFFSET64
+ __ino_t st_ino; /* File serial number. */
+# else
+ __ino_t __st_ino; /* 32bit file serial number. */
+# endif
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned short int __pad2;
+# ifndef __USE_FILE_OFFSET64
+ __off_t st_size; /* Size of file, in bytes. */
+# else
+ __off64_t st_size; /* Size of file, in bytes. */
+# endif
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+# ifndef __USE_FILE_OFFSET64
+ __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
+# else
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# endif
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# define st_atime st_atim.tv_sec /* Backward compatibility. */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+# ifndef __USE_FILE_OFFSET64
+ unsigned long int __glibc_reserved4;
+ unsigned long int __glibc_reserved5;
+# else
+ __ino64_t st_ino; /* File serial number. */
+# endif
+#endif /* __USE_TIME_BITS64 */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct stat64
+ {
+# ifdef __USE_TIME_BITS64
+# include <bits/struct_stat_time64_helper.h>
+# else
+ __dev_t st_dev; /* Device. */
+ unsigned int __pad1;
+
+ __ino_t __st_ino; /* 32bit file serial number. */
+ __mode_t st_mode; /* File mode. */
+ __nlink_t st_nlink; /* Link count. */
+ __uid_t st_uid; /* User ID of the file's owner. */
+ __gid_t st_gid; /* Group ID of the file's group.*/
+ __dev_t st_rdev; /* Device number, if device. */
+ unsigned int __pad2;
+ __off64_t st_size; /* Size of file, in bytes. */
+ __blksize_t st_blksize; /* Optimal block size for I/O. */
+
+ __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+ /* Nanosecond resolution timestamps are stored in a format
+ equivalent to 'struct timespec'. This is the type used
+ whenever possible but the Unix namespace rules do not allow the
+ identifier 'timespec' to appear in the <sys/stat.h> header.
+ Therefore we have to handle the use of this header in strictly
+ standard-compliant sources special. */
+ struct timespec st_atim; /* Time of last access. */
+ struct timespec st_mtim; /* Time of last modification. */
+ struct timespec st_ctim; /* Time of last status change. */
+# else
+ __time_t st_atime; /* Time of last access. */
+ unsigned long int st_atimensec; /* Nscecs of last access. */
+ __time_t st_mtime; /* Time of last modification. */
+ unsigned long int st_mtimensec; /* Nsecs of last modification. */
+ __time_t st_ctime; /* Time of last status change. */
+ unsigned long int st_ctimensec; /* Nsecs of last status change. */
+# endif
+ __ino64_t st_ino; /* File serial number. */
+# endif /* __USE_TIME_BITS64 */
+ };
+#endif
+
+/* Tell code we have these members. */
+#define _STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported. */
+#define _STATBUF_ST_NSEC
+
+
+#endif /* _BITS_STRUCT_STAT_H */
diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
index f965986ba8..19841d0738 100644
--- a/sysdeps/unix/sysv/linux/sys/mount.h
+++ b/sysdeps/unix/sysv/linux/sys/mount.h
@@ -27,77 +27,113 @@
#include <stddef.h>
#include <sys/ioctl.h>
-#define BLOCK_SIZE 1024
+#ifdef __has_include
+# if __has_include ("linux/mount.h")
+# include "linux/mount.h"
+# endif
+#endif
+
+
#define BLOCK_SIZE_BITS 10
+#define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
/* These are the fs-independent mount-flags: up to 16 flags are
supported */
enum
{
+#undef MS_RDONLY
MS_RDONLY = 1, /* Mount read-only. */
#define MS_RDONLY MS_RDONLY
+#undef MS_NOSUID
MS_NOSUID = 2, /* Ignore suid and sgid bits. */
#define MS_NOSUID MS_NOSUID
+#undef MS_NODEV
MS_NODEV = 4, /* Disallow access to device special files. */
#define MS_NODEV MS_NODEV
+#undef MS_NOEXEC
MS_NOEXEC = 8, /* Disallow program execution. */
#define MS_NOEXEC MS_NOEXEC
+#undef MS_SYNCHRONOUS
MS_SYNCHRONOUS = 16, /* Writes are synced at once. */
#define MS_SYNCHRONOUS MS_SYNCHRONOUS
+#undef MS_REMOUNT
MS_REMOUNT = 32, /* Alter flags of a mounted FS. */
#define MS_REMOUNT MS_REMOUNT
+#undef MS_MANDLOCK
MS_MANDLOCK = 64, /* Allow mandatory locks on an FS. */
#define MS_MANDLOCK MS_MANDLOCK
+#undef MS_DIRSYNC
MS_DIRSYNC = 128, /* Directory modifications are synchronous. */
#define MS_DIRSYNC MS_DIRSYNC
+#undef MS_NOSYMFOLLOW
MS_NOSYMFOLLOW = 256, /* Do not follow symlinks. */
#define MS_NOSYMFOLLOW MS_NOSYMFOLLOW
+#undef MS_NOATIME
MS_NOATIME = 1024, /* Do not update access times. */
#define MS_NOATIME MS_NOATIME
+#undef MS_NODIRATIME
MS_NODIRATIME = 2048, /* Do not update directory access times. */
#define MS_NODIRATIME MS_NODIRATIME
+#undef MS_BIND
MS_BIND = 4096, /* Bind directory at different place. */
#define MS_BIND MS_BIND
+#undef MS_MOVE
MS_MOVE = 8192,
#define MS_MOVE MS_MOVE
+#undef MS_REC
MS_REC = 16384,
#define MS_REC MS_REC
+#undef MS_SILENT
MS_SILENT = 32768,
#define MS_SILENT MS_SILENT
+#undef MS_POSIXACL
MS_POSIXACL = 1 << 16, /* VFS does not apply the umask. */
#define MS_POSIXACL MS_POSIXACL
+#undef MS_UNBINDABLE
MS_UNBINDABLE = 1 << 17, /* Change to unbindable. */
#define MS_UNBINDABLE MS_UNBINDABLE
+#undef MS_PRIVATE
MS_PRIVATE = 1 << 18, /* Change to private. */
#define MS_PRIVATE MS_PRIVATE
+#undef MS_SLAVE
MS_SLAVE = 1 << 19, /* Change to slave. */
#define MS_SLAVE MS_SLAVE
+#undef MS_SHARED
MS_SHARED = 1 << 20, /* Change to shared. */
#define MS_SHARED MS_SHARED
+#undef MS_RELATIME
MS_RELATIME = 1 << 21, /* Update atime relative to mtime/ctime. */
#define MS_RELATIME MS_RELATIME
+#undef MS_KERNMOUNT
MS_KERNMOUNT = 1 << 22, /* This is a kern_mount call. */
#define MS_KERNMOUNT MS_KERNMOUNT
+#undef MS_I_VERSION
MS_I_VERSION = 1 << 23, /* Update inode I_version field. */
#define MS_I_VERSION MS_I_VERSION
+#undef MS_STRICTATIME
MS_STRICTATIME = 1 << 24, /* Always perform atime updates. */
#define MS_STRICTATIME MS_STRICTATIME
+#undef MS_LAZYTIME
MS_LAZYTIME = 1 << 25, /* Update the on-disk [acm]times lazily. */
#define MS_LAZYTIME MS_LAZYTIME
+#undef MS_ACTIVE
MS_ACTIVE = 1 << 30,
#define MS_ACTIVE MS_ACTIVE
+#undef MS_NOUSER
MS_NOUSER = 1 << 31
#define MS_NOUSER MS_NOUSER
};
/* Flags that can be altered by MS_REMOUNT */
+#undef MS_RMT_MASK
#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION \
|MS_LAZYTIME)
/* Magic mount flag number. Has to be or-ed to the flag values. */
+#undef MS_MGC_VAL
#define MS_MGC_VAL 0xc0ed0000 /* Magic flag number to indicate "new" flags */
#define MS_MGC_MSK 0xffff0000 /* Magic flag number mask */
@@ -106,20 +142,35 @@ enum
is probably as bad and I don't want to create yet another include
file. */
+#undef BLKROSET
#define BLKROSET _IO(0x12, 93) /* Set device read-only (0 = read-write). */
+#undef BLKROGET
#define BLKROGET _IO(0x12, 94) /* Get read-only status (0 = read_write). */
+#undef BLKRRPART
#define BLKRRPART _IO(0x12, 95) /* Re-read partition table. */
+#undef BLKGETSIZE
#define BLKGETSIZE _IO(0x12, 96) /* Return device size. */
+#undef BLKFLSBUF
#define BLKFLSBUF _IO(0x12, 97) /* Flush buffer cache. */
+#undef BLKRASET
#define BLKRASET _IO(0x12, 98) /* Set read ahead for block device. */
+#undef BLKRAGET
#define BLKRAGET _IO(0x12, 99) /* Get current read ahead setting. */
+#undef BLKFRASET
#define BLKFRASET _IO(0x12,100) /* Set filesystem read-ahead. */
+#undef BLKFRAGET
#define BLKFRAGET _IO(0x12,101) /* Get filesystem read-ahead. */
+#undef BLKSECTSET
#define BLKSECTSET _IO(0x12,102) /* Set max sectors per request. */
+#undef BLKSECTGET
#define BLKSECTGET _IO(0x12,103) /* Get max sectors per request. */
+#undef BLKSSZGET
#define BLKSSZGET _IO(0x12,104) /* Get block device sector size. */
+#undef BLKBSZGET
#define BLKBSZGET _IOR(0x12,112,size_t)
+#undef BLKBSZSET
#define BLKBSZSET _IOW(0x12,113,size_t)
+#undef BLKGETSIZE64
#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size. */
@@ -137,9 +188,6 @@ enum
};
-/* fsopen flags. */
-#define FSOPEN_CLOEXEC 0x00000001
-
/* fsmount flags. */
#define FSMOUNT_CLOEXEC 0x00000001
@@ -157,6 +205,7 @@ enum
#define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks. */
+#ifndef MOUNT_ATTR_SIZE_VER0
/* For mount_setattr. */
struct mount_attr
{
@@ -165,6 +214,7 @@ struct mount_attr
uint64_t propagation;
uint64_t userns_fd;
};
+#endif
#define MOUNT_ATTR_SIZE_VER0 32 /* sizeof first published struct */
@@ -185,26 +235,31 @@ struct mount_attr
#define FSPICK_EMPTY_PATH 0x00000008
+#ifndef FSOPEN_CLOEXEC
/* The type of fsconfig call made. */
enum fsconfig_command
{
FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */
-#define FSCONFIG_SET_FLAG FSCONFIG_SET_FLAG
+# define FSCONFIG_SET_FLAG FSCONFIG_SET_FLAG
FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */
-#define FSCONFIG_SET_STRING FSCONFIG_SET_STRING
+# define FSCONFIG_SET_STRING FSCONFIG_SET_STRING
FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */
-#define FSCONFIG_SET_BINARY FSCONFIG_SET_BINARY
+# define FSCONFIG_SET_BINARY FSCONFIG_SET_BINARY
FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */
-#define FSCONFIG_SET_PATH FSCONFIG_SET_PATH
+# define FSCONFIG_SET_PATH FSCONFIG_SET_PATH
FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */
-#define FSCONFIG_SET_PATH_EMPTY FSCONFIG_SET_PATH_EMPTY
+# define FSCONFIG_SET_PATH_EMPTY FSCONFIG_SET_PATH_EMPTY
FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */
-#define FSCONFIG_SET_FD FSCONFIG_SET_FD
+# define FSCONFIG_SET_FD FSCONFIG_SET_FD
FSCONFIG_CMD_CREATE = 6, /* Invoke superblock creation */
-#define FSCONFIG_CMD_CREATE FSCONFIG_CMD_CREATE
+# define FSCONFIG_CMD_CREATE FSCONFIG_CMD_CREATE
FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */
-#define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE
+# define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE
};
+#endif
+
+/* fsopen flags. */
+#define FSOPEN_CLOEXEC 0x00000001
/* open_tree flags. */
#define OPEN_TREE_CLONE 1 /* Clone the target tree and attach the clone */
diff --git a/sysdeps/unix/sysv/linux/syscall-names.list b/sysdeps/unix/sysv/linux/syscall-names.list
index 6c7b2f7011..028ad3107a 100644
--- a/sysdeps/unix/sysv/linux/syscall-names.list
+++ b/sysdeps/unix/sysv/linux/syscall-names.list
@@ -21,8 +21,8 @@
# This file can list all potential system calls. The names are only
# used if the installed kernel headers also provide them.
-# The list of system calls is current as of Linux 5.18.
-kernel 5.18
+# The list of system calls is current as of Linux 5.19.
+kernel 5.19
FAST_atomic_update
FAST_cmpxchg
diff --git a/sysdeps/unix/sysv/linux/tst-mount-compile.py b/sysdeps/unix/sysv/linux/tst-mount-compile.py
new file mode 100755
index 0000000000..0ec74d4e0b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-mount-compile.py
@@ -0,0 +1,66 @@
+#!/usr/bin/python3
+# Check if glibc provided sys/mount.h can be used along related kernel
+# headers.
+# Copyright (C) 2022 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <https://www.gnu.org/licenses/>.
+
+import argparse
+import sys
+
+import glibcextract
+
+
+def main():
+ """The main entry point."""
+ parser = argparse.ArgumentParser(
+ description='Check if glibc provided sys/mount.h can be '
+ ' used along related kernel headers.')
+ parser.add_argument('--cc', metavar='CC',
+ help='C compiler (including options) to use')
+ args = parser.parse_args()
+
+ if glibcextract.compile_c_snippet(
+ '#include <linux/mount.h>',
+ args.cc).returncode != 0:
+ sys.exit (77)
+
+ def check(testname, snippet):
+ # Add -Werror to catch macro redefinitions and _ISOMAC to avoid
+ # internal glibc definitions.
+ r = glibcextract.compile_c_snippet(snippet, args.cc,
+ '-Werror -D_ISOMAC')
+ if r.returncode != 0:
+ print('error: test {}:\n{}'.format(testname, r.output.decode()))
+ return r.returncode
+
+ status = max(
+ check("sys/mount.h + linux/mount.h",
+ "#include <sys/mount.h>\n"
+ "#include <linux/mount.h>"),
+ check("sys/mount.h + linux/fs.h",
+ "#include <sys/mount.h>\n"
+ "#include <linux/fs.h>"),
+ check("linux/mount.h + sys/mount.h",
+ "#include <linux/mount.h>\n"
+ "#include <sys/mount.h>"),
+ check("linux/fs.h + sys/mount.h",
+ "#include <linux/fs.h>\n"
+ "#include <sys/mount.h>"))
+ sys.exit(status)
+
+if __name__ == '__main__':
+ main()
diff --git a/sysdeps/unix/sysv/linux/tst-mount-consts.py b/sysdeps/unix/sysv/linux/tst-mount-consts.py
index a62f803123..be2ef2daf1 100755
--- a/sysdeps/unix/sysv/linux/tst-mount-consts.py
+++ b/sysdeps/unix/sysv/linux/tst-mount-consts.py
@@ -33,6 +33,11 @@ def main():
help='C compiler (including options) to use')
args = parser.parse_args()
+ if glibcextract.compile_c_snippet(
+ '#include <linux/mount.h>',
+ args.cc).returncode != 0:
+ sys.exit (77)
+
linux_version_headers = glibcsyscalls.linux_kernel_version(args.cc)
# Constants in glibc were updated to match Linux v5.16. When glibc
# constants are updated this value should be updated to match the
diff --git a/sysdeps/unix/sysv/linux/tst-pidfd-consts.py b/sysdeps/unix/sysv/linux/tst-pidfd-consts.py
index 90cbb9be64..d732173abd 100644
--- a/sysdeps/unix/sysv/linux/tst-pidfd-consts.py
+++ b/sysdeps/unix/sysv/linux/tst-pidfd-consts.py
@@ -33,11 +33,13 @@ def main():
help='C compiler (including options) to use')
args = parser.parse_args()
- linux_version_headers = glibcsyscalls.linux_kernel_version(args.cc)
- # Linux started to provide pidfd.h with 5.10.
- if linux_version_headers < (5, 10):
+ if glibcextract.compile_c_snippet(
+ '#include <linux/pidfd.h>',
+ args.cc).returncode != 0:
sys.exit (77)
- linux_version_glibc = (5, 18)
+
+ linux_version_headers = glibcsyscalls.linux_kernel_version(args.cc)
+ linux_version_glibc = (5, 19)
sys.exit(glibcextract.compare_macro_consts(
'#include <sys/pidfd.h>\n',
'#include <asm/fcntl.h>\n'
diff --git a/sysdeps/unix/sysv/linux/tst-pidfd.c b/sysdeps/unix/sysv/linux/tst-pidfd.c
index 037af22290..5711d1c312 100644
--- a/sysdeps/unix/sysv/linux/tst-pidfd.c
+++ b/sysdeps/unix/sysv/linux/tst-pidfd.c
@@ -147,8 +147,11 @@ do_test (void)
may be denied if the process doesn't have CAP_SYS_PTRACE or
if a LSM security_ptrace_access_check denies access. */
if (fd == -1 && errno == EPERM)
- FAIL_UNSUPPORTED ("don't have permission to use pidfd_getfd on pidfd, "
- "skipping test");
+ {
+ TEST_COMPARE (pidfd_send_signal (pidfd, SIGKILL, NULL, 0), 0);
+ FAIL_UNSUPPORTED ("don't have permission to use pidfd_getfd on pidfd, "
+ "skipping test");
+ }
TEST_VERIFY (fd > 0);
char *path = xasprintf ("/proc/%d/fd/%d", pid, remote_fd);
diff --git a/sysdeps/x86/get-isa-level.h b/sysdeps/x86/get-isa-level.h
index 1ade78ab73..5b4dd5f062 100644
--- a/sysdeps/x86/get-isa-level.h
+++ b/sysdeps/x86/get-isa-level.h
@@ -47,6 +47,8 @@ get_isa_level (const struct cpu_features *cpu_features)
isa_level |= GNU_PROPERTY_X86_ISA_1_V2;
if (CPU_FEATURE_USABLE_P (cpu_features, AVX)
&& CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI1)
+ && CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& CPU_FEATURE_USABLE_P (cpu_features, F16C)
&& CPU_FEATURE_USABLE_P (cpu_features, FMA)
&& CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
diff --git a/sysdeps/x86/isa-level.h b/sysdeps/x86/isa-level.h
index 3c4480aba7..06f6c9663e 100644
--- a/sysdeps/x86/isa-level.h
+++ b/sysdeps/x86/isa-level.h
@@ -79,7 +79,9 @@
/* ISA level >= 3 guaranteed includes. */
#define AVX_X86_ISA_LEVEL 3
#define AVX2_X86_ISA_LEVEL 3
+#define BMI1_X86_ISA_LEVEL 3
#define BMI2_X86_ISA_LEVEL 3
+#define LZCNT_X86_ISA_LEVEL 3
#define MOVBE_X86_ISA_LEVEL 3
/* ISA level >= 2 guaranteed includes. */
diff --git a/sysdeps/x86_64/multiarch/ifunc-avx2.h b/sysdeps/x86_64/multiarch/ifunc-avx2.h
index a57a9952f3..f2f5e8a211 100644
--- a/sysdeps/x86_64/multiarch/ifunc-avx2.h
+++ b/sysdeps/x86_64/multiarch/ifunc-avx2.h
@@ -36,7 +36,9 @@ IFUNC_SELECTOR (void)
const struct cpu_features *cpu_features = __get_cpu_features ();
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, BMI1)
&& X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, BMI2)
+ && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
&& X86_ISA_CPU_FEATURES_ARCH_P (cpu_features,
AVX_Fast_Unaligned_Load, ))
{
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index a71444eccb..00a91123d3 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -69,10 +69,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
&& CPU_FEATURE_USABLE (BMI2)),
__memchr_evex_rtm)
X86_IFUNC_IMPL_ADD_V3 (array, i, memchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__memchr_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, memchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__memchr_avx2_rtm)
/* ISA V2 wrapper for SSE2 implementation because the SSE2
@@ -207,13 +209,19 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, memrchr,
X86_IFUNC_IMPL_ADD_V4 (array, i, memrchr,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (LZCNT)),
__memrchr_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, memrchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (LZCNT)),
__memrchr_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, memrchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
+ && CPU_FEATURE_USABLE (LZCNT)
&& CPU_FEATURE_USABLE (RTM)),
__memrchr_avx2_rtm)
/* ISA V2 wrapper for SSE2 implementation because the SSE2
@@ -335,10 +343,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
&& CPU_FEATURE_USABLE (BMI2)),
__rawmemchr_evex_rtm)
X86_IFUNC_IMPL_ADD_V3 (array, i, rawmemchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__rawmemchr_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, rawmemchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__rawmemchr_avx2_rtm)
/* ISA V2 wrapper for SSE2 implementation because the SSE2
@@ -448,13 +458,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strcasecmp,
X86_IFUNC_IMPL_ADD_V4 (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, strcasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strcasecmp_avx2_rtm)
X86_IFUNC_IMPL_ADD_V2 (array, i, strcasecmp,
@@ -470,13 +483,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strcasecmp_l,
X86_IFUNC_IMPL_ADD_V4 (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_l_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, strcasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcasecmp_l_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, strcasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strcasecmp_l_avx2_rtm)
X86_IFUNC_IMPL_ADD_V2 (array, i, strcasecmp_l,
@@ -562,13 +578,19 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strrchr,
X86_IFUNC_IMPL_ADD_V4 (array, i, strrchr,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)),
__strrchr_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, strrchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)),
__strrchr_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, strrchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strrchr_avx2_rtm)
/* ISA V2 wrapper for SSE2 implementation because the SSE2
@@ -585,10 +607,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
&& CPU_FEATURE_USABLE (BMI2)),
__strcmp_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, strcmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strcmp_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, strcmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strcmp_avx2_rtm)
X86_IFUNC_IMPL_ADD_V2 (array, i, strcmp,
@@ -638,13 +662,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strncasecmp,
X86_IFUNC_IMPL_ADD_V4 (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, strncasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strncasecmp_avx2_rtm)
X86_IFUNC_IMPL_ADD_V2 (array, i, strncasecmp,
@@ -660,13 +687,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strncasecmp_l,
X86_IFUNC_IMPL_ADD_V4 (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ & CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_l_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, strncasecmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncasecmp_l_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, strncasecmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strncasecmp_l_avx2_rtm)
X86_IFUNC_IMPL_ADD_V2 (array, i, strncasecmp_l,
@@ -773,13 +803,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
X86_IFUNC_IMPL_ADD_V4 (array, i, wcsrchr,
(CPU_FEATURE_USABLE (AVX512VL)
&& CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI1)
&& CPU_FEATURE_USABLE (BMI2)),
__wcsrchr_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, wcsrchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)),
__wcsrchr_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, wcsrchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI1)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wcsrchr_avx2_rtm)
/* ISA V2 wrapper for SSE2 implementation because the SSE2
@@ -796,10 +831,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
&& CPU_FEATURE_USABLE (BMI2)),
__wcscmp_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, wcscmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__wcscmp_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, wcscmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wcscmp_avx2_rtm)
/* ISA V2 wrapper for SSE2 implementation because the SSE2
@@ -816,10 +853,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
&& CPU_FEATURE_USABLE (BMI2)),
__wcsncmp_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, wcsncmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__wcsncmp_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, wcsncmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wcsncmp_avx2_rtm)
/* ISA V2 wrapper for GENERIC implementation because the
@@ -909,10 +948,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
&& CPU_FEATURE_USABLE (BMI2)),
__wmemchr_evex_rtm)
X86_IFUNC_IMPL_ADD_V3 (array, i, wmemchr,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__wmemchr_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, wmemchr,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__wmemchr_avx2_rtm)
/* ISA V2 wrapper for SSE2 implementation because the SSE2
@@ -1162,13 +1203,16 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL (i, name, strncmp,
X86_IFUNC_IMPL_ADD_V4 (array, i, strncmp,
(CPU_FEATURE_USABLE (AVX512VL)
- && CPU_FEATURE_USABLE (AVX512BW)),
+ && CPU_FEATURE_USABLE (AVX512BW)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncmp_evex)
X86_IFUNC_IMPL_ADD_V3 (array, i, strncmp,
- CPU_FEATURE_USABLE (AVX2),
+ (CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)),
__strncmp_avx2)
X86_IFUNC_IMPL_ADD_V3 (array, i, strncmp,
(CPU_FEATURE_USABLE (AVX2)
+ && CPU_FEATURE_USABLE (BMI2)
&& CPU_FEATURE_USABLE (RTM)),
__strncmp_avx2_rtm)
X86_IFUNC_IMPL_ADD_V2 (array, i, strncmp,
diff --git a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
index 68646ef199..7622af259c 100644
--- a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
+++ b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
@@ -34,6 +34,7 @@ IFUNC_SELECTOR (void)
const struct cpu_features *cpu_features = __get_cpu_features ();
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& X86_ISA_CPU_FEATURES_ARCH_P (cpu_features,
AVX_Fast_Unaligned_Load, ))
{
diff --git a/sysdeps/x86_64/multiarch/strcmp.c b/sysdeps/x86_64/multiarch/strcmp.c
index fdd5afe3af..9d6c9f66ba 100644
--- a/sysdeps/x86_64/multiarch/strcmp.c
+++ b/sysdeps/x86_64/multiarch/strcmp.c
@@ -45,12 +45,12 @@ IFUNC_SELECTOR (void)
const struct cpu_features *cpu_features = __get_cpu_features ();
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& X86_ISA_CPU_FEATURES_ARCH_P (cpu_features,
AVX_Fast_Unaligned_Load, ))
{
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)
- && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
- && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, BMI2))
+ && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512BW))
return OPTIMIZE (evex);
if (CPU_FEATURE_USABLE_P (cpu_features, RTM))
diff --git a/sysdeps/x86_64/multiarch/strncmp.c b/sysdeps/x86_64/multiarch/strncmp.c
index 4ebe4bde30..c4f8b6bbb5 100644
--- a/sysdeps/x86_64/multiarch/strncmp.c
+++ b/sysdeps/x86_64/multiarch/strncmp.c
@@ -41,12 +41,12 @@ IFUNC_SELECTOR (void)
const struct cpu_features *cpu_features = __get_cpu_features ();
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX2)
+ && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, BMI2)
&& X86_ISA_CPU_FEATURES_ARCH_P (cpu_features,
AVX_Fast_Unaligned_Load, ))
{
if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)
- && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
- && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, BMI2))
+ && X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512BW))
return OPTIMIZE (evex);
if (CPU_FEATURE_USABLE_P (cpu_features, RTM))
diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index e6b9e8743a..4af102a3f6 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -22,8 +22,9 @@ subdir := wcsmbs
include ../Makeconfig
-headers := wchar.h bits/wchar.h bits/wchar2.h bits/wchar-ldbl.h uchar.h \
- bits/types/__mbstate_t.h bits/types/mbstate_t.h bits/types/wint_t.h
+headers := wchar.h bits/wchar.h bits/wchar2.h bits/wchar2-decl.h \
+ bits/wchar-ldbl.h uchar.h bits/types/__mbstate_t.h \
+ bits/types/mbstate_t.h bits/types/wint_t.h
routines := wcscat wcschr wcscmp wcscpy wcscspn wcsdup wcslen wcsncat \
wcsncmp wcsncpy wcspbrk wcsrchr wcsspn wcstok wcsstr wmemchr \
@@ -73,6 +74,8 @@ $(objpfx)tst-wcstol-locale.out: $(gen-locales)
$(objpfx)tst-wcstod-nan-locale.out: $(gen-locales)
$(objpfx)tst-c16-surrogate.out: $(gen-locales)
$(objpfx)tst-c32-state.out: $(gen-locales)
+$(objpfx)test-c8rtomb.out: $(gen-locales)
+$(objpfx)test-mbrtoc8.out: $(gen-locales)
endif
$(objpfx)tst-wcstod-round: $(libm)
diff --git a/wcsmbs/bits/wchar2-decl.h b/wcsmbs/bits/wchar2-decl.h
new file mode 100644
index 0000000000..8e1735c33b
--- /dev/null
+++ b/wcsmbs/bits/wchar2-decl.h
@@ -0,0 +1,124 @@
+/* Checking macros for wchar functions. Declarations only.
+ Copyright (C) 2004-2022 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_WCHAR2_DECL_H
+#define _BITS_WCHAR2_DECL_H 1
+
+#ifndef _WCHAR_H
+# error "Never include <bits/wchar2-decl.h> directly; use <wchar.h> instead."
+#endif
+
+
+extern wchar_t *__wmemcpy_chk (wchar_t *__restrict __s1,
+ const wchar_t *__restrict __s2, size_t __n,
+ size_t __ns1) __THROW;
+extern wchar_t *__wmemmove_chk (wchar_t *__s1, const wchar_t *__s2,
+ size_t __n, size_t __ns1) __THROW;
+
+
+#ifdef __USE_GNU
+
+extern wchar_t *__wmempcpy_chk (wchar_t *__restrict __s1,
+ const wchar_t *__restrict __s2, size_t __n,
+ size_t __ns1) __THROW;
+
+#endif
+
+
+extern wchar_t *__wmemset_chk (wchar_t *__s, wchar_t __c, size_t __n,
+ size_t __ns) __THROW;
+extern wchar_t *__wcscpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __n) __THROW;
+extern wchar_t *__wcpcpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcsncpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src, size_t __n,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcpncpy_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src, size_t __n,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcscat_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __destlen) __THROW;
+extern wchar_t *__wcsncat_chk (wchar_t *__restrict __dest,
+ const wchar_t *__restrict __src,
+ size_t __n, size_t __destlen) __THROW;
+extern int __swprintf_chk (wchar_t *__restrict __s, size_t __n,
+ int __flag, size_t __s_len,
+ const wchar_t *__restrict __format, ...)
+ __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 6))) */;
+extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
+ int __flag, size_t __s_len,
+ const wchar_t *__restrict __format,
+ __gnuc_va_list __arg)
+ __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
+
+#if __USE_FORTIFY_LEVEL > 1
+
+extern int __fwprintf_chk (__FILE *__restrict __stream, int __flag,
+ const wchar_t *__restrict __format, ...);
+extern int __wprintf_chk (int __flag, const wchar_t *__restrict __format,
+ ...);
+extern int __vfwprintf_chk (__FILE *__restrict __stream, int __flag,
+ const wchar_t *__restrict __format,
+ __gnuc_va_list __ap);
+extern int __vwprintf_chk (int __flag, const wchar_t *__restrict __format,
+ __gnuc_va_list __ap);
+
+#endif
+
+extern wchar_t *__fgetws_chk (wchar_t *__restrict __s, size_t __size, int __n,
+ __FILE *__restrict __stream) __wur;
+
+#ifdef __USE_GNU
+
+extern wchar_t *__fgetws_unlocked_chk (wchar_t *__restrict __s, size_t __size,
+ int __n, __FILE *__restrict __stream)
+ __wur;
+
+#endif
+
+extern size_t __wcrtomb_chk (char *__restrict __s, wchar_t __wchar,
+ mbstate_t *__restrict __p,
+ size_t __buflen) __THROW __wur;
+extern size_t __mbsrtowcs_chk (wchar_t *__restrict __dst,
+ const char **__restrict __src,
+ size_t __len, mbstate_t *__restrict __ps,
+ size_t __dstlen) __THROW;
+extern size_t __wcsrtombs_chk (char *__restrict __dst,
+ const wchar_t **__restrict __src,
+ size_t __len, mbstate_t *__restrict __ps,
+ size_t __dstlen) __THROW;
+
+#ifdef __USE_XOPEN2K8
+
+extern size_t __mbsnrtowcs_chk (wchar_t *__restrict __dst,
+ const char **__restrict __src, size_t __nmc,
+ size_t __len, mbstate_t *__restrict __ps,
+ size_t __dstlen) __THROW;
+extern size_t __wcsnrtombs_chk (char *__restrict __dst,
+ const wchar_t **__restrict __src,
+ size_t __nwc, size_t __len,
+ mbstate_t *__restrict __ps, size_t __dstlen)
+ __THROW;
+
+#endif
+
+#endif /* bits/wchar2-decl.h. */
diff --git a/wcsmbs/bits/wchar2.h b/wcsmbs/bits/wchar2.h
index 0e017f458b..3f110efe57 100644
--- a/wcsmbs/bits/wchar2.h
+++ b/wcsmbs/bits/wchar2.h
@@ -21,9 +21,6 @@
#endif
-extern wchar_t *__wmemcpy_chk (wchar_t *__restrict __s1,
- const wchar_t *__restrict __s2, size_t __n,
- size_t __ns1) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmemcpy_alias,
(wchar_t *__restrict __s1,
const wchar_t *__restrict __s2, size_t __n),
@@ -45,8 +42,6 @@ __NTH (wmemcpy (wchar_t *__restrict __s1, const wchar_t *__restrict __s2,
}
-extern wchar_t *__wmemmove_chk (wchar_t *__s1, const wchar_t *__s2,
- size_t __n, size_t __ns1) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmemmove_alias, (wchar_t *__s1,
const wchar_t *__s2,
size_t __n), wmemmove);
@@ -66,9 +61,6 @@ __NTH (wmemmove (wchar_t *__s1, const wchar_t *__s2, size_t __n))
#ifdef __USE_GNU
-extern wchar_t *__wmempcpy_chk (wchar_t *__restrict __s1,
- const wchar_t *__restrict __s2, size_t __n,
- size_t __ns1) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmempcpy_alias,
(wchar_t *__restrict __s1,
const wchar_t *__restrict __s2,
@@ -91,8 +83,6 @@ __NTH (wmempcpy (wchar_t *__restrict __s1, const wchar_t *__restrict __s2,
#endif
-extern wchar_t *__wmemset_chk (wchar_t *__s, wchar_t __c, size_t __n,
- size_t __ns) __THROW;
extern wchar_t *__REDIRECT_NTH (__wmemset_alias, (wchar_t *__s, wchar_t __c,
size_t __n), wmemset);
extern wchar_t *__REDIRECT_NTH (__wmemset_chk_warn,
@@ -110,9 +100,6 @@ __NTH (wmemset (wchar_t *__s, wchar_t __c, size_t __n))
}
-extern wchar_t *__wcscpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __n) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcscpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src), wcscpy);
@@ -127,9 +114,6 @@ __NTH (wcscpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src))
}
-extern wchar_t *__wcpcpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcpcpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src), wcpcpy);
@@ -144,9 +128,6 @@ __NTH (wcpcpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src))
}
-extern wchar_t *__wcsncpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src, size_t __n,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcsncpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src,
@@ -168,9 +149,6 @@ __NTH (wcsncpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
}
-extern wchar_t *__wcpncpy_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src, size_t __n,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcpncpy_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src,
@@ -192,9 +170,6 @@ __NTH (wcpncpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
}
-extern wchar_t *__wcscat_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcscat_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src), wcscat);
@@ -209,9 +184,6 @@ __NTH (wcscat (wchar_t *__restrict __dest, const wchar_t *__restrict __src))
}
-extern wchar_t *__wcsncat_chk (wchar_t *__restrict __dest,
- const wchar_t *__restrict __src,
- size_t __n, size_t __destlen) __THROW;
extern wchar_t *__REDIRECT_NTH (__wcsncat_alias,
(wchar_t *__restrict __dest,
const wchar_t *__restrict __src,
@@ -228,10 +200,6 @@ __NTH (wcsncat (wchar_t *__restrict __dest, const wchar_t *__restrict __src,
}
-extern int __swprintf_chk (wchar_t *__restrict __s, size_t __n,
- int __flag, size_t __s_len,
- const wchar_t *__restrict __format, ...)
- __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 6))) */;
extern int __REDIRECT_NTH_LDBL (__swprintf_alias,
(wchar_t *__restrict __s, size_t __n,
@@ -258,11 +226,6 @@ __NTH (swprintf (wchar_t *__restrict __s, size_t __n,
: swprintf (s, n, __VA_ARGS__))
#endif
-extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
- int __flag, size_t __s_len,
- const wchar_t *__restrict __format,
- __gnuc_va_list __arg)
- __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
extern int __REDIRECT_NTH_LDBL (__vswprintf_alias,
(wchar_t *__restrict __s, size_t __n,
@@ -283,16 +246,6 @@ __NTH (vswprintf (wchar_t *__restrict __s, size_t __n,
#if __USE_FORTIFY_LEVEL > 1
-extern int __fwprintf_chk (__FILE *__restrict __stream, int __flag,
- const wchar_t *__restrict __format, ...);
-extern int __wprintf_chk (int __flag, const wchar_t *__restrict __format,
- ...);
-extern int __vfwprintf_chk (__FILE *__restrict __stream, int __flag,
- const wchar_t *__restrict __format,
- __gnuc_va_list __ap);
-extern int __vwprintf_chk (int __flag, const wchar_t *__restrict __format,
- __gnuc_va_list __ap);
-
# ifdef __va_arg_pack
__fortify_function int
wprintf (const wchar_t *__restrict __fmt, ...)
@@ -328,8 +281,6 @@ vfwprintf (__FILE *__restrict __stream,
#endif
-extern wchar_t *__fgetws_chk (wchar_t *__restrict __s, size_t __size, int __n,
- __FILE *__restrict __stream) __wur;
extern wchar_t *__REDIRECT (__fgetws_alias,
(wchar_t *__restrict __s, int __n,
__FILE *__restrict __stream), fgetws) __wur;
@@ -351,9 +302,6 @@ fgetws (wchar_t *__restrict __s, int __n, __FILE *__restrict __stream)
}
#ifdef __USE_GNU
-extern wchar_t *__fgetws_unlocked_chk (wchar_t *__restrict __s, size_t __size,
- int __n, __FILE *__restrict __stream)
- __wur;
extern wchar_t *__REDIRECT (__fgetws_unlocked_alias,
(wchar_t *__restrict __s, int __n,
__FILE *__restrict __stream), fgetws_unlocked)
@@ -379,9 +327,6 @@ fgetws_unlocked (wchar_t *__restrict __s, int __n, __FILE *__restrict __stream)
#endif
-extern size_t __wcrtomb_chk (char *__restrict __s, wchar_t __wchar,
- mbstate_t *__restrict __p,
- size_t __buflen) __THROW __wur;
extern size_t __REDIRECT_NTH (__wcrtomb_alias,
(char *__restrict __s, wchar_t __wchar,
mbstate_t *__restrict __ps), wcrtomb) __wur;
@@ -404,10 +349,6 @@ __NTH (wcrtomb (char *__restrict __s, wchar_t __wchar,
}
-extern size_t __mbsrtowcs_chk (wchar_t *__restrict __dst,
- const char **__restrict __src,
- size_t __len, mbstate_t *__restrict __ps,
- size_t __dstlen) __THROW;
extern size_t __REDIRECT_NTH (__mbsrtowcs_alias,
(wchar_t *__restrict __dst,
const char **__restrict __src,
@@ -431,10 +372,6 @@ __NTH (mbsrtowcs (wchar_t *__restrict __dst, const char **__restrict __src,
}
-extern size_t __wcsrtombs_chk (char *__restrict __dst,
- const wchar_t **__restrict __src,
- size_t __len, mbstate_t *__restrict __ps,
- size_t __dstlen) __THROW;
extern size_t __REDIRECT_NTH (__wcsrtombs_alias,
(char *__restrict __dst,
const wchar_t **__restrict __src,
@@ -458,10 +395,6 @@ __NTH (wcsrtombs (char *__restrict __dst, const wchar_t **__restrict __src,
#ifdef __USE_XOPEN2K8
-extern size_t __mbsnrtowcs_chk (wchar_t *__restrict __dst,
- const char **__restrict __src, size_t __nmc,
- size_t __len, mbstate_t *__restrict __ps,
- size_t __dstlen) __THROW;
extern size_t __REDIRECT_NTH (__mbsnrtowcs_alias,
(wchar_t *__restrict __dst,
const char **__restrict __src, size_t __nmc,
@@ -485,11 +418,6 @@ __NTH (mbsnrtowcs (wchar_t *__restrict __dst, const char **__restrict __src,
}
-extern size_t __wcsnrtombs_chk (char *__restrict __dst,
- const wchar_t **__restrict __src,
- size_t __nwc, size_t __len,
- mbstate_t *__restrict __ps, size_t __dstlen)
- __THROW;
extern size_t __REDIRECT_NTH (__wcsnrtombs_alias,
(char *__restrict __dst,
const wchar_t **__restrict __src,
diff --git a/wcsmbs/uchar.h b/wcsmbs/uchar.h
index c37e8619a0..5f7139f279 100644
--- a/wcsmbs/uchar.h
+++ b/wcsmbs/uchar.h
@@ -34,8 +34,16 @@
/* Declare the C2x char8_t typedef in C2x modes, but only if the C++
__cpp_char8_t feature test macro is not defined. */
#if __GLIBC_USE (ISOC2X) && !defined __cpp_char8_t
+#if __GNUC_PREREQ (10, 0) && defined __cplusplus
+/* Suppress the diagnostic regarding char8_t being a keyword in C++20. */
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wc++20-compat"
+#endif
/* Define the 8-bit character type. */
typedef unsigned char char8_t;
+#if __GNUC_PREREQ (10, 0) && defined __cplusplus
+# pragma GCC diagnostic pop
+#endif
#endif
#ifndef __USE_ISOCXX11
diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
index 5d6a40853d..c1321c7518 100644
--- a/wcsmbs/wchar.h
+++ b/wcsmbs/wchar.h
@@ -864,14 +864,21 @@ extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
/* Define some macros helping to catch buffer overflows. */
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
-# include <bits/wchar2.h>
+/* Declare all functions from bits/wchar2-decl.h first. */
+# include <bits/wchar2-decl.h>
#endif
-#include <bits/floatn.h>
+/* The following headers provide asm redirections. These redirections must
+ appear before the first usage of these functions, e.g. in bits/wchar.h. */
#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
# include <bits/wchar-ldbl.h>
#endif
+#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
+/* Now include the function definitions and redirects too. */
+# include <bits/wchar2.h>
+#endif
+
__END_DECLS
#endif /* wchar.h */
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