2b0b9a1c85
This patch consolidate the remaning non cancellable syscall definitions
on not-cancel.h header. They are:
* __fcntl_nocancel: Moved from fcntl.h to not-cancel.h.
* __sigsuspend_nocancel: Removed since 988f991b50 it is not used or
defined anymore.
* __nanosleep_nocancel: Removed since 6f33fd046b it is defined on
not-cancel.h.
Now all non-cancellable syscall definition are defined on not-cancel
(the only exceptions is the stdio symbol __fxprintf_nocancel which
uses non cancellable open and it is used on getopt implementation).
Checked on x86_64-linux-gnu and with build-many-glibc.py.
* include/fcntl.h (__fcntl_nocancel): Remove definition.
* include/signal.h (__sigsuspend_nocancel): Likewise.
* include/time.h (__nanosleep_nocancel): Likewise.
* sysdeps/generic/not-cancel.h (__fcntl_nocancel): New macro.
* login/utmp_file.c: Include non cancellable syscall header.
* sysdeps/unix/sysv/linux/not-cancel.h (__fcntl_nocancel): New
prototype.
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/* Uncancelable versions of cancelable interfaces. Linux/NPTL version.
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Copyright (C) 2003-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef NOT_CANCEL_H
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# define NOT_CANCEL_H
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#include <fcntl.h>
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#include <sysdep.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/syscall.h>
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#include <sys/wait.h>
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#include <time.h>
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/* Non cancellable open syscall. */
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__typeof (open) __open_nocancel;
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libc_hidden_proto (__open_nocancel)
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/* Non cancellable open syscall (LFS version). */
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__typeof (open64) __open64_nocancel;
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libc_hidden_proto (__open64_nocancel)
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/* Non cancellable openat syscall. */
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__typeof (openat) __openat_nocancel;
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libc_hidden_proto (__openat_nocancel)
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/* Non cacellable openat syscall (LFS version). */
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__typeof (openat64) __openat64_nocancel;
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libc_hidden_proto (__openat64_nocancel)
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/* Non cancellable read syscall. */
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__typeof (__read) __read_nocancel;
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libc_hidden_proto (__read_nocancel)
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/* Uncancelable write. */
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__typeof (__write) __write_nocancel;
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libc_hidden_proto (__write_nocancel)
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/* Uncancelable close. */
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__typeof (__close) __close_nocancel;
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libc_hidden_proto (__close_nocancel)
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/* Non cancellable close syscall that does not also set errno in case of
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failure. */
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static inline void
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__close_nocancel_nostatus (int fd)
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{
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__close_nocancel (fd);
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}
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/* Non cancellable writev syscall that does not also set errno in case of
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failure. */
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static inline void
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__writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
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{
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INTERNAL_SYSCALL_DECL (err);
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INTERNAL_SYSCALL_CALL (writev, err, fd, iov, iovcnt);
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}
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/* Uncancelable waitpid. */
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__typeof (waitpid) __waitpid_nocancel;
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libc_hidden_proto (__waitpid_nocancel)
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/* Uncancelable pause. */
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__typeof (pause) __pause_nocancel;
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libc_hidden_proto (__pause_nocancel)
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/* Uncancelable nanosleep. */
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__typeof (__nanosleep) __nanosleep_nocancel;
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hidden_proto (__nanosleep_nocancel)
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/* Uncancelable fcntl. */
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__typeof (__fcntl) __fcntl_nocancel attribute_hidden;
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#endif /* NOT_CANCEL_H */
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