045c13d185
This patch consolidates all Linux setrlimit and getrlimit on the default
sysdeps/unix/sysv/linux/{set,get}rlimit{64}.c. It contains two exceptions:
1. mips32 and mips64n32 which requires a versioned symbol for GLIBC 2.19
and higher due a broken RLIM64_INFINITY constant.
2. sparc32 does not define a compat symbol for getrlimit64 for old 2GB
limit. I am not sure if it is required, but a RLIM_INFINITY fix [1]
change its definition without adding a compat symbol. This patch does
not aim to address this possible issue, it follow current symbol
export.
The default implementation uses prlimit64 for 64 bit rlim_t ({set,get}rlimit64)
and if it fails with ENOSYS it fall back to {get,set}rlimit syscall. This
code path is only used on kernel older than 2.6.36 (basically now only x86)
and I avoid to user __ASSUME_PRLIMTI64 to simplify the implementation. Once
x86 moves to be on par with other architectures regarding minimum kernel
supported we can get rid of using old syscalls and default path.
A new type size define is added, __RLIM_T_MATCHES_RLIM64_T, where is set as
default for 64 bits ports. This allows the default implementation to avoid
{get,set}rlimit building and alias {get,set}rlimit64 to {get,set}rlimit.
Checked on x86_64, i386, armhf, aarch64, and powerpc64le. I also did a
sanity build plus check-abi on all other supported architectures.
[1] Commit 9c96ff23858b0759e12ad69e3c4599931c90bee8
Adhemerval Zanella <adhemerval.zanella@linaro.org>
Yury Norov <ynorov@caviumnetworks.com>
* bits/typesizes.h (__RLIM_T_MATCHES_RLIM64_T): define.
* sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
(__RLIM_T_MATCHES_RLIM64_T): Likewise.
* sysdeps/unix/sysv/linux/generic/bits/typesizes.h
(__RLIM_T_MATCHES_RLIM64_T): Likewise.
* sysdeps/unix/sysv/linux/s390/bits/typesizes.h [__s390x__]
(__RLIM_T_MATCHES_RLIM64_T): Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
[__arch64__ || __sparcv9] (__RLIM_T_MATCHES_RLIM64_T): Likewise.
* sysdeps/unix/sysv/linux/x86/bits/typesizes.h [__86_64__]
(__RLIM_T_MATCHES_RLIM64_T): Likewise.
* sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = resource]
(sysdep_routines): Remove oldgetrlimit64.
* sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) = resource]
(sysdep_routines): Likewise.
* sysdeps/unix/sysv/linux/m68k/Makefile [$(subdir) = resource]
(sysdep_routines): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/Makefile
[$(subdir) = resource] (sysdep_routines): Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/Makefile
[$(subdir) = resource] (sysdep_routines): Likewise.
* sysdeps/unix/sysv/linux/arm/getrlimit64.c: Remove file.
* sysdeps/unix/sysv/linux/arm/oldgetrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/hppa/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/i386/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/i386/oldgetrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/oldgetrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/oldgetrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/oldgetrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/sh/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/setrlimit64.c: Likewise.
* sysdeps/sysv/linux/generic/wordsize-32/syscalls.list: Remove
setrlimit and getrlimit.
* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/getrlimit.c: New file.
* sysdeps/unix/sysv/linux/sparc/getrlimit64.c: Likewise.
* sysdeps/unix/sysv/linux/setrlimit.c: Likewise.
* sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Handle
__RLIM_T_MATCHES_RLIM64_T and add alias if defined.
(__old_getrlimit64): Add compatibility symbol.
* sysdeps/unix/sysv/linux/setrlimit64.c (__setrlimit): Likewise.
79 lines
2.6 KiB
Makefile
79 lines
2.6 KiB
Makefile
# The default ABI is 32.
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default-abi := 32
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# %ebp is used to pass the 6th argument to system calls, so these
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# system calls are incompatible with a frame pointer.
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uses-6-syscall-arguments = -fomit-frame-pointer
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ifeq ($(subdir),misc)
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sysdep_routines += ioperm iopl vm86
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CFLAGS-epoll_pwait.o += $(uses-6-syscall-arguments)
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CFLAGS-epoll_pwait.os += $(uses-6-syscall-arguments)
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CFLAGS-mmap.o += $(uses-6-syscall-arguments)
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CFLAGS-mmap.os += $(uses-6-syscall-arguments)
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CFLAGS-mmap64.o += $(uses-6-syscall-arguments)
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CFLAGS-mmap64.os += $(uses-6-syscall-arguments)
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CFLAGS-pselect.o += $(uses-6-syscall-arguments)
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CFLAGS-pselect.os += $(uses-6-syscall-arguments)
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CFLAGS-rtld-mmap.os += $(uses-6-syscall-arguments)
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endif
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ifeq ($(subdir),sysvipc)
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CFLAGS-semtimedop.o += $(uses-6-syscall-arguments)
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CFLAGS-semtimedop.os += $(uses-6-syscall-arguments)
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endif
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ifeq ($(subdir),elf)
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sysdep-others += lddlibc4
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install-bin += lddlibc4
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endif
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ifeq ($(subdir),io)
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sysdep_routines += libc-do-syscall
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CFLAGS-posix_fadvise64.o += $(uses-6-syscall-arguments)
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CFLAGS-posix_fadvise64.os += $(uses-6-syscall-arguments)
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CFLAGS-posix_fallocate.o += $(uses-6-syscall-arguments)
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CFLAGS-posix_fallocate.os += $(uses-6-syscall-arguments)
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CFLAGS-posix_fallocate64.o += $(uses-6-syscall-arguments)
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CFLAGS-posix_fallocate64.os += $(uses-6-syscall-arguments)
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CFLAGS-sync_file_range.o += $(uses-6-syscall-arguments)
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CFLAGS-sync_file_range.os += $(uses-6-syscall-arguments)
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CFLAGS-fallocate.o += $(uses-6-syscall-arguments)
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CFLAGS-fallocate.os += $(uses-6-syscall-arguments)
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CFLAGS-fallocate64.o += $(uses-6-syscall-arguments)
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CFLAGS-fallocate64.os += $(uses-6-syscall-arguments)
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endif
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ifeq ($(subdir),nptl)
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libpthread-sysdep_routines += libc-do-syscall
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libpthread-shared-only-routines += libc-do-syscall
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endif
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ifeq ($(subdir),stdlib)
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gen-as-const-headers += ucontext_i.sym
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endif
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ifeq ($(subdir),csu)
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sysdep-dl-routines += sysdep
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endif
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ifeq ($(subdir),nptl)
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# pull in __syscall_error routine
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libpthread-routines += sysdep
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libpthread-shared-only-routines += sysdep
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CFLAGS-pthread_rwlock_timedrdlock.o += $(uses-6-syscall-arguments)
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CFLAGS-pthread_rwlock_timedrdlock.os += $(uses-6-syscall-arguments)
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CFLAGS-pthread_rwlock_timedwrlock.o += $(uses-6-syscall-arguments)
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CFLAGS-pthread_rwlock_timedwrlock.os += $(uses-6-syscall-arguments)
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CFLAGS-sem_wait.o += $(uses-6-syscall-arguments)
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CFLAGS-sem_wait.os += $(uses-6-syscall-arguments)
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CFLAGS-sem_timedwait.o += $(uses-6-syscall-arguments)
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CFLAGS-sem_timedwait.os += $(uses-6-syscall-arguments)
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endif
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ifeq ($(subdir),rt)
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# pull in __syscall_error routine
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librt-routines += sysdep
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librt-shared-only-routines += sysdep
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endif
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