mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-20 17:51:16 +00:00
80b55d320b
PI_FETCH_TASKINFO to proc_getprocinfo and through _hurd_priority_which_map. * sysdeps/mach/hurd/setpriority.c (setpriority): Pass new arg to _hurd_priority_which_map. * hurd/hurdprio.c (_hurd_priority_which_map): New arg PI_FLAGS, passed through to proc_getprocinfo RPC. * hurd/hurd/resource.h: Add PI_FLAGS arg in decl.
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* Copyright (C) 1994, 1995 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <hurd.h>
|
|
#include <hurd/resource.h>
|
|
|
|
/* Set the priority of all processes specified by WHICH and WHO
|
|
to PRIO. Returns 0 on success, -1 on errors. */
|
|
int
|
|
setpriority (enum __priority_which which, int who, int prio)
|
|
{
|
|
error_t err;
|
|
error_t pidloser, priloser;
|
|
unsigned int npids, ntasks, nwin, nperm, nacces;
|
|
|
|
error_t setonepriority (pid_t pid, struct procinfo *pi)
|
|
{
|
|
task_t task;
|
|
error_t piderr = __USEPORT (PROC, __proc_pid2task (port, pid, &task));
|
|
if (piderr == EPERM)
|
|
++nperm;
|
|
if (piderr != ESRCH)
|
|
{
|
|
++npids;
|
|
if (piderr && piderr != EPERM)
|
|
pidloser = piderr;
|
|
}
|
|
if (! piderr)
|
|
{
|
|
error_t prierr;
|
|
++ntasks;
|
|
prierr = __task_priority (task, NICE_TO_MACH_PRIORITY (prio), 1);
|
|
__mach_port_deallocate (__mach_task_self (), task);
|
|
switch (prierr)
|
|
{
|
|
case KERN_FAILURE:
|
|
++nacces;
|
|
break;
|
|
case KERN_SUCCESS:
|
|
++nwin;
|
|
break;
|
|
case KERN_INVALID_ARGUMENT: /* Task died. */
|
|
--npids;
|
|
--ntasks;
|
|
break;
|
|
default:
|
|
priloser = prierr;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
npids = ntasks = nwin = nperm = nacces = 0;
|
|
pidloser = priloser = 0;
|
|
err = _hurd_priority_which_map (which, who, setonepriority, 0);
|
|
|
|
if (!err && npids == 0)
|
|
/* No error, but no pids found. */
|
|
err = ESRCH;
|
|
else if (nperm == npids)
|
|
/* Got EPERM from proc_task2pid for every process. */
|
|
err = EPERM;
|
|
else if (nacces == ntasks)
|
|
/* Got KERN_FAILURE from task_priority for every task. */
|
|
err = EACCES;
|
|
else if (nwin == 0)
|
|
err = pidloser ?: priloser;
|
|
|
|
return err ? __hurd_fail (err) : 0;
|
|
}
|