| /* getpriority for Linux. |
| Copyright (C) 1996,98,2000,02,03 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <errno.h> |
| #include <sys/resource.h> |
| |
| #include <sysdep.h> |
| #include <sys/syscall.h> |
| |
| /* The return value of getpriority syscall is biased by this value |
| to avoid returning negative values. */ |
| #define PZERO 20 |
| |
| /* Return the highest priority of any process specified by WHICH and WHO |
| (see above); if WHO is zero, the current process, process group, or user |
| (as specified by WHO) is used. A lower priority number means higher |
| priority. Priorities range from PRIO_MIN to PRIO_MAX. */ |
| |
| int |
| getpriority (enum __priority_which which, id_t who) |
| { |
| int res; |
| |
| res = INLINE_SYSCALL (getpriority, 2, (int) which, who); |
| if (res >= 0) |
| res = PZERO - res; |
| return res; |
| } |
| libc_hidden_def (getpriority) |
