sysdeps/unix/sysv/linux/mq_timedsend.c

   1 /* Send a message to a message queue with a timeout.  Linux version.
   2    Copyright (C) 2017-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <mqueue.h>
  20 #include <sysdep-cancel.h>
  21 #include <shlib-compat.h>
  22
  23 /* Add message pointed by MSG_PTR to message queue MQDES, stop blocking
  24    on full message queue if ABS_TIMEOUT expires.  */
  25 int
  26 ___mq_timedsend_time64 (mqd_t mqdes, const char *msg_ptr, size_t msg_len,
  27                         unsigned int msg_prio,
  28                         const struct __timespec64 *abs_timeout)
  29 {
  30 # ifndef __NR_mq_timedsend_time64
  31 #  define __NR_mq_timedsend_time64 __NR_mq_timedsend
  32 # endif
  33
  34 #ifdef __ASSUME_TIME64_SYSCALLS
  35   return SYSCALL_CANCEL (mq_timedsend_time64, mqdes, msg_ptr, msg_len,
  36                          msg_prio, abs_timeout);
  37 #else
  38   bool need_time64 = abs_timeout != NULL
  39                      && !in_int32_t_range (abs_timeout->tv_sec);
  40   if (need_time64)
  41     {
  42       int r = SYSCALL_CANCEL (mq_timedsend_time64, mqdes, msg_ptr, msg_len,
  43                               msg_prio, abs_timeout);
  44       if (r == 0 || errno != ENOSYS)
  45         return r;
  46       __set_errno (EOVERFLOW);
  47       return -1;
  48     }
  49
  50   struct timespec ts32, *pts32 = NULL;
  51   if (abs_timeout != NULL)
  52     {
  53       ts32 = valid_timespec64_to_timespec (*abs_timeout);
  54       pts32 = &ts32;
  55     }
  56
  57   return SYSCALL_CANCEL (mq_timedsend, mqdes, msg_ptr, msg_len, msg_prio,
  58                          pts32);
  59 #endif
  60 }
  61
  62 #if __TIMESIZE == 64
  63 versioned_symbol (libc, ___mq_timedsend_time64, mq_timedsend, GLIBC_2_34);
  64 libc_hidden_ver (___mq_timedsend_time64, __mq_timedsend)
  65 # ifndef SHARED
  66 strong_alias (___mq_timedsend_time64, __mq_timedsend)
  67 # endif
  68 # if OTHER_SHLIB_COMPAT (librt, GLIBC_2_3_4, GLIBC_2_34)
  69 compat_symbol (librt, ___mq_timedsend_time64, mq_timedsend, GLIBC_2_3_4);
  70 # endif
  71
  72 #else /* __TIMESIZE != 64 */
  73 libc_hidden_ver (___mq_timedsend_time64, __mq_timedsend_time64)
  74 versioned_symbol (libc, ___mq_timedsend_time64, __mq_timedsend_time64,
  75                   GLIBC_2_34);
  76
  77 int
  78 ___mq_timedsend (mqd_t mqdes, const char *msg_ptr, size_t msg_len,
  79                 unsigned int msg_prio, const struct timespec *abs_timeout)
  80 {
  81   struct __timespec64 ts64;
  82   if (abs_timeout != NULL)
  83     ts64 = valid_timespec_to_timespec64 (*abs_timeout);
  84
  85   return __mq_timedsend_time64 (mqdes, msg_ptr, msg_len, msg_prio,
  86                                 abs_timeout != NULL ? &ts64 : NULL);
  87 }
  88 versioned_symbol (libc, ___mq_timedsend, mq_timedsend, GLIBC_2_34);
  89 libc_hidden_ver (___mq_timedsend, __mq_timedsend)
  90 # ifndef SHARED
  91 strong_alias (___mq_timedsend, __mq_timedsend)
  92 # endif
  93 # if OTHER_SHLIB_COMPAT (librt, GLIBC_2_3_4, GLIBC_2_34)
  94 compat_symbol (librt, ___mq_timedsend, mq_timedsend, GLIBC_2_3_4);
  95 # endif
  96
  97 #endif /* __TIMESIZE != 64 */