1  /* Copyright (C) 1996-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <sched.h>
      20  #include <sys/types.h>
      21  #include <hurd.h>
      22  
      23  
      24  /* Set scheduling algorithm and/or parameters for a process.  */
      25  int
      26  __sched_setscheduler (pid_t pid, int policy, const struct sched_param *param)
      27  {
      28    switch (policy)
      29      {
      30      case SCHED_OTHER:
      31        if (param->sched_priority != 0)
      32  	return __hurd_fail (EINVAL);
      33        break;
      34  
      35      case SCHED_FIFO:
      36      case SCHED_RR:
      37        return __hurd_fail (ENOTSUP);
      38  
      39      default:
      40        return EINVAL;
      41      }
      42    return 0;
      43  }
      44  libc_hidden_def (__sched_setscheduler)
      45  weak_alias (__sched_setscheduler, sched_setscheduler)