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/* Receive a message from a message queue with a timeout. Linux version.
Copyright (C) 2017-2021 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 <mqueue.h>
#include <sysdep-cancel.h>
#include <shlib-compat.h>
/* Receive the oldest from highest priority messages in message queue
MQDES, stop waiting if ABS_TIMEOUT expires. */
ssize_t
___mq_timedreceive_time64 (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
unsigned int *__restrict msg_prio,
const struct __timespec64 *__restrict abs_timeout)
{
#ifndef __NR_mq_timedreceive_time64
# define __NR_mq_timedreceive_time64 __NR_mq_timedreceive
#endif
#ifdef __ASSUME_TIME64_SYSCALLS
return SYSCALL_CANCEL (mq_timedreceive_time64, mqdes, msg_ptr, msg_len,
msg_prio, abs_timeout);
#else
bool need_time64 = abs_timeout != NULL
&& !in_time_t_range (abs_timeout->tv_sec);
if (need_time64)
{
int r = SYSCALL_CANCEL (mq_timedreceive_time64, mqdes, msg_ptr, msg_len,
msg_prio, abs_timeout);
if (r == 0 || errno != ENOSYS)
return r;
__set_errno (EOVERFLOW);
return -1;
}
struct timespec ts32, *pts32 = NULL;
if (abs_timeout != NULL)
{
ts32 = valid_timespec64_to_timespec (*abs_timeout);
pts32 = &ts32;
}
return SYSCALL_CANCEL (mq_timedreceive, mqdes, msg_ptr, msg_len, msg_prio,
pts32);
#endif
}
#if __TIMESIZE == 64
versioned_symbol (libc, ___mq_timedreceive_time64, mq_timedreceive, GLIBC_2_34);
libc_hidden_ver (___mq_timedreceive_time64, __mq_timedreceive)
# ifndef SHARED
strong_alias (___mq_timedreceive_time64, __mq_timedreceive)
# endif
# if OTHER_SHLIB_COMPAT (librt, GLIBC_2_3_4, GLIBC_2_34)
compat_symbol (librt, ___mq_timedreceive_time64, mq_timedreceive, GLIBC_2_3_4);
# endif
#else /* __TIMESIZE != 64 */
libc_hidden_ver (___mq_timedreceive_time64, __mq_timedreceive_time64)
versioned_symbol (libc, ___mq_timedreceive_time64, __mq_timedreceive_time64,
GLIBC_2_34);
ssize_t
___mq_timedreceive (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
unsigned int *__restrict msg_prio,
const struct timespec *__restrict abs_timeout)
{
struct __timespec64 ts64;
if (abs_timeout != NULL)
ts64 = valid_timespec_to_timespec64 (*abs_timeout);
return __mq_timedreceive_time64 (mqdes, msg_ptr, msg_len, msg_prio,
abs_timeout != NULL ? &ts64 : NULL);
}
versioned_symbol (libc, ___mq_timedreceive, mq_timedreceive, GLIBC_2_34);
libc_hidden_ver (___mq_timedreceive, __mq_timedreceive)
# ifndef SHARED
strong_alias (___mq_timedreceive, __mq_timedreceive)
# endif
# if OTHER_SHLIB_COMPAT (librt, GLIBC_2_3_4, GLIBC_2_34)
compat_symbol (librt, ___mq_timedreceive, mq_timedreceive, GLIBC_2_3_4);
# endif
#endif /* __TIMESIZE != 64 */
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