1  /* sched_rr_get_interval -- get the scheduler's SCHED_RR policy time interval.
       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 License as
       7     published by the Free Software Foundation; either version 2.1 of the
       8     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; see the file COPYING.LIB.  If
      17     not, see <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <errno.h>
      20  #include <stdlib.h>
      21  #include <time.h>
      22  #include <sysdep.h>
      23  #include <kernel-features.h>
      24  
      25  int
      26  __sched_rr_get_interval64 (pid_t pid, struct __timespec64 *tp)
      27  {
      28  #ifndef __NR_sched_rr_get_interval_time64
      29  # define __NR_sched_rr_get_interval_time64 __NR_sched_rr_get_interval
      30  #endif
      31    int ret = INLINE_SYSCALL_CALL (sched_rr_get_interval_time64, pid, tp);
      32  #ifndef __ASSUME_TIME64_SYSCALLS
      33    if (ret == 0 || errno != ENOSYS)
      34      return ret;
      35  
      36    struct timespec tp32;
      37    ret = INLINE_SYSCALL_CALL (sched_rr_get_interval, pid, &tp32);
      38    if (ret == 0)
      39      *tp = valid_timespec_to_timespec64 (tp32);
      40  #endif
      41    return ret;
      42  }
      43  
      44  #if __TIMESIZE != 64
      45  libc_hidden_def (__sched_rr_get_interval64)
      46  
      47  int
      48  __sched_rr_get_interval (pid_t pid, struct timespec *tp)
      49  {
      50    int ret;
      51    struct __timespec64 tp64;
      52  
      53    ret = __sched_rr_get_interval64 (pid, &tp64);
      54  
      55    if (ret == 0)
      56      {
      57        if (! in_time_t_range (tp64.tv_sec))
      58          {
      59            __set_errno (EOVERFLOW);
      60            return -1;
      61          }
      62  
      63        *tp = valid_timespec64_to_timespec (tp64);
      64      }
      65  
      66    return ret;
      67  }
      68  #endif
      69  strong_alias (__sched_rr_get_interval, sched_rr_get_interval)