mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 19:51:11 +00:00
110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/* Uncancelable versions of cancelable interfaces. Linux/NPTL version.
|
|
Copyright (C) 2003-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
|
|
|
|
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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef NOT_CANCEL_H
|
|
# define NOT_CANCEL_H
|
|
|
|
#include <sysdep.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <sys/syscall.h>
|
|
|
|
/* Uncancelable open. */
|
|
#ifdef __NR_open
|
|
# define open_not_cancel(name, flags, mode) \
|
|
INLINE_SYSCALL (open, 3, name, flags, mode)
|
|
# define open_not_cancel_2(name, flags) \
|
|
INLINE_SYSCALL (open, 2, name, flags)
|
|
#else
|
|
# define open_not_cancel(name, flags, mode) \
|
|
INLINE_SYSCALL (openat, 4, AT_FDCWD, name, flags, mode)
|
|
# define open_not_cancel_2(name, flags) \
|
|
INLINE_SYSCALL (openat, 3, AT_FDCWD, name, flags)
|
|
#endif
|
|
|
|
/* Uncancelable read. */
|
|
#define __read_nocancel(fd, buf, len) \
|
|
INLINE_SYSCALL (read, 3, fd, buf, len)
|
|
|
|
/* Uncancelable write. */
|
|
#define __write_nocancel(fd, buf, len) \
|
|
INLINE_SYSCALL (write, 3, fd, buf, len)
|
|
|
|
/* Uncancelable openat. */
|
|
#define openat_not_cancel(fd, fname, oflag, mode) \
|
|
INLINE_SYSCALL (openat, 4, fd, fname, oflag, mode)
|
|
#define openat_not_cancel_3(fd, fname, oflag) \
|
|
INLINE_SYSCALL (openat, 3, fd, fname, oflag)
|
|
#define openat64_not_cancel(fd, fname, oflag, mode) \
|
|
INLINE_SYSCALL (openat, 4, fd, fname, oflag | O_LARGEFILE, mode)
|
|
#define openat64_not_cancel_3(fd, fname, oflag) \
|
|
INLINE_SYSCALL (openat, 3, fd, fname, oflag | O_LARGEFILE)
|
|
|
|
/* Uncancelable close. */
|
|
#define __close_nocancel(fd) \
|
|
INLINE_SYSCALL (close, 1, fd)
|
|
#define close_not_cancel(fd) \
|
|
__close_nocancel (fd)
|
|
#define close_not_cancel_no_status(fd) \
|
|
(void) ({ INTERNAL_SYSCALL_DECL (err); \
|
|
INTERNAL_SYSCALL (close, err, 1, (fd)); })
|
|
|
|
/* Uncancelable read. */
|
|
#define read_not_cancel(fd, buf, n) \
|
|
__read_nocancel (fd, buf, n)
|
|
|
|
/* Uncancelable write. */
|
|
#define write_not_cancel(fd, buf, n) \
|
|
__write_nocancel (fd, buf, n)
|
|
|
|
/* Uncancelable writev. */
|
|
#define writev_not_cancel_no_status(fd, iov, n) \
|
|
(void) ({ INTERNAL_SYSCALL_DECL (err); \
|
|
INTERNAL_SYSCALL (writev, err, 3, (fd), (iov), (n)); })
|
|
|
|
/* Uncancelable fcntl. */
|
|
#define fcntl_not_cancel(fd, cmd, val) \
|
|
__fcntl_nocancel (fd, cmd, val)
|
|
|
|
/* Uncancelable waitpid. */
|
|
#define __waitpid_nocancel(pid, stat_loc, options) \
|
|
INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
|
|
#define waitpid_not_cancel(pid, stat_loc, options) \
|
|
__waitpid_nocancel(pid, stat_loc, options)
|
|
|
|
/* Uncancelable pause. */
|
|
#define pause_not_cancel() \
|
|
({ sigset_t set; \
|
|
int __rc = INLINE_SYSCALL (rt_sigprocmask, 4, SIG_BLOCK, NULL, &set, \
|
|
_NSIG / 8); \
|
|
if (__rc == 0) \
|
|
__rc = INLINE_SYSCALL (rt_sigsuspend, 2, &set, _NSIG / 8); \
|
|
__rc; \
|
|
})
|
|
|
|
/* Uncancelable nanosleep. */
|
|
#define nanosleep_not_cancel(requested_time, remaining) \
|
|
INLINE_SYSCALL (nanosleep, 2, requested_time, remaining)
|
|
|
|
/* Uncancelable sigsuspend. */
|
|
#define sigsuspend_not_cancel(set) \
|
|
INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8)
|
|
|
|
#endif /* NOT_CANCEL_H */
|