diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/getpriority.c')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/getpriority.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/getpriority.c b/REORG.TODO/sysdeps/unix/sysv/linux/getpriority.c new file mode 100644 index 0000000000..5137cf72b8 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/getpriority.c @@ -0,0 +1,45 @@ +/* getpriority for Linux. + Copyright (C) 1996-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#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) +weak_alias (__getpriority, getpriority) |