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/* Copyright (C) 2003-2019 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 <time.h>
#include <errno.h>
#include <sysdep-cancel.h>
#include "kernel-posix-cpu-timers.h"
#include <shlib-compat.h>
/* We can simply use the syscall. The CPU clocks are not supported
with this function. */
int
__clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
struct timespec *rem)
{
if (clock_id == CLOCK_THREAD_CPUTIME_ID)
return EINVAL;
if (clock_id == CLOCK_PROCESS_CPUTIME_ID)
clock_id = MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED);
/* If the call is interrupted by a signal handler or encounters an error,
it returns a positive value similar to errno. */
INTERNAL_SYSCALL_DECL (err);
int r = INTERNAL_SYSCALL_CANCEL (clock_nanosleep, err, clock_id, flags,
req, rem);
return (INTERNAL_SYSCALL_ERROR_P (r, err)
? INTERNAL_SYSCALL_ERRNO (r, err) : 0);
}
libc_hidden_def (__clock_nanosleep)
versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17);
/* clock_nanosleep moved to libc in version 2.17;
old binaries may expect the symbol version it had in librt. */
#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
strong_alias (__clock_nanosleep, __clock_nanosleep_2);
compat_symbol (libc, __clock_nanosleep_2, clock_nanosleep, GLIBC_2_2);
#endif
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