1  /* setitimer -- Set the state of an interval timer.  Linux/32 version.
       2     Copyright (C) 2020-2023 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     <http://www.gnu.org/licenses/>.  */
      18  
      19  #include <time.h>
      20  #include <sys/time.h>
      21  #include <sys/types.h>
      22  #include <sysdep.h>
      23  #include <tv32-compat.h>
      24  
      25  int
      26  __setitimer64 (__itimer_which_t which,
      27                 const struct __itimerval64 *restrict new_value,
      28                 struct __itimerval64 *restrict old_value)
      29  {
      30  #if __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64
      31    return INLINE_SYSCALL_CALL (setitimer, which, new_value, old_value);
      32  #else
      33    struct __itimerval32 new_value_32;
      34  
      35    if (! in_int32_t_range (new_value->it_interval.tv_sec)
      36        || ! in_int32_t_range (new_value->it_value.tv_sec))
      37      {
      38        __set_errno (EOVERFLOW);
      39        return -1;
      40      }
      41    new_value_32.it_interval
      42      = valid_timeval64_to_timeval32 (new_value->it_interval);
      43    new_value_32.it_value
      44      = valid_timeval64_to_timeval32 (new_value->it_value);
      45  
      46    if (old_value == NULL)
      47      return INLINE_SYSCALL_CALL (setitimer, which, &new_value_32, NULL);
      48  
      49    struct __itimerval32 old_value_32;
      50    if (INLINE_SYSCALL_CALL (setitimer, which, &new_value_32, &old_value_32)
      51        == -1)
      52      return -1;
      53  
      54    old_value->it_interval
      55       = valid_timeval32_to_timeval64 (old_value_32.it_interval);
      56    old_value->it_value
      57       = valid_timeval32_to_timeval64 (old_value_32.it_value);
      58    return 0;
      59  #endif
      60  }
      61  
      62  #if __TIMESIZE != 64
      63  libc_hidden_def (__setitimer64)
      64  int
      65  __setitimer (__itimer_which_t which,
      66               const struct itimerval *restrict new_value,
      67               struct itimerval *restrict old_value)
      68  {
      69    int ret;
      70    struct __itimerval64 new64, old64;
      71  
      72    new64.it_interval
      73      = valid_timeval_to_timeval64 (new_value->it_interval);
      74    new64.it_value
      75      = valid_timeval_to_timeval64 (new_value->it_value);
      76  
      77    ret = __setitimer64 (which, &new64, old_value ? &old64 : NULL);
      78  
      79    if (ret == 0 && old_value != NULL)
      80      {
      81        old_value->it_interval
      82          = valid_timeval64_to_timeval (old64.it_interval);
      83        old_value->it_value
      84          = valid_timeval64_to_timeval (old64.it_value);
      85      }
      86  
      87    return ret;
      88  }
      89  #endif
      90  weak_alias (__setitimer, setitimer)