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19926de954
This patch consolidates all the non cancellable writev calls to use the __writev_nocancel identifier. For non cancellable targets it will be just a macro to call the default respective symbol while on Linux will be a internal one. Checked on x86_64-linux-gnu, x86_64-linux-gnu-x32, and i686-linux-gnu. * gmon/gmon.c (write_hist): Replace writev_not_cancel_no_status with __writev_nocancel_nostatus. (write_call_graph): Likewise. (write_bb_counts): Likewise. * resolv/herror.c (herror): Likewise. * sysdeps/generic/not-cancel.h (writev_not_cancel_no_status): Remove macro. (__writev_nocancel_nostatus): New macro. * sysdeps/unix/sysv/linux/not-cancel.h (writev_not_cancel_no_status): Remove macro. (__writev_nocancel_nostatus): New function.
103 lines
3.2 KiB
C
103 lines
3.2 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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/* 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 fcntl. */
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#define fcntl_not_cancel(fd, cmd, val) \
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__fcntl_nocancel (fd, cmd, val)
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/* Uncancelable waitpid. */
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#define __waitpid_nocancel(pid, stat_loc, options) \
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INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
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#define waitpid_not_cancel(pid, stat_loc, options) \
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__waitpid_nocancel(pid, stat_loc, options)
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/* Uncancelable pause. */
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#define pause_not_cancel() \
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({ sigset_t set; \
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int __rc = INLINE_SYSCALL (rt_sigprocmask, 4, SIG_BLOCK, NULL, &set, \
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_NSIG / 8); \
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if (__rc == 0) \
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__rc = INLINE_SYSCALL (rt_sigsuspend, 2, &set, _NSIG / 8); \
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__rc; \
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})
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/* Uncancelable nanosleep. */
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#define nanosleep_not_cancel(requested_time, remaining) \
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INLINE_SYSCALL (nanosleep, 2, requested_time, remaining)
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/* Uncancelable sigsuspend. */
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#define sigsuspend_not_cancel(set) \
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INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8)
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#endif /* NOT_CANCEL_H */
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