mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 04:31:03 +00:00
1e03b6d828
With arch-syscall.h it can now assumes the existance of either __NR_mq_timedreceive or __NR_mq_timedreceive_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/* Receive a message from a message queue with a timeout. Linux version.
|
|
Copyright (C) 2017-2020 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>
|
|
|
|
/* 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
|
|
int ret = SYSCALL_CANCEL (mq_timedreceive_time64, mqdes, msg_ptr, msg_len,
|
|
msg_prio, abs_timeout);
|
|
|
|
#ifndef __ASSUME_TIME64_SYSCALLS
|
|
if (ret == 0 || errno != ENOSYS)
|
|
return ret;
|
|
|
|
struct timespec ts32;
|
|
if (abs_timeout != NULL)
|
|
{
|
|
if (! in_time_t_range (abs_timeout->tv_sec))
|
|
{
|
|
__set_errno (EOVERFLOW);
|
|
return -1;
|
|
}
|
|
|
|
ts32 = valid_timespec64_to_timespec (*abs_timeout);
|
|
}
|
|
|
|
ret = SYSCALL_CANCEL (mq_timedreceive, mqdes, msg_ptr, msg_len, msg_prio,
|
|
abs_timeout != NULL ? &ts32 : NULL);
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if __TIMESIZE != 64
|
|
librt_hidden_def (__mq_timedreceive_time64)
|
|
|
|
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);
|
|
}
|
|
#endif
|
|
|
|
hidden_def (__mq_timedreceive)
|
|
weak_alias (__mq_timedreceive, mq_timedreceive)
|
|
hidden_weak (mq_timedreceive)
|