| /* Copyright (C) 2002-2018 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 <sched.h> |
| #include <string.h> |
| #include <sysdep.h> |
| #include <sys/param.h> |
| #include <sys/types.h> |
| #include <shlib-compat.h> |
| |
| |
| #ifdef __NR_sched_getaffinity |
| # if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) |
| extern int __sched_getaffinity_new (pid_t, size_t, cpu_set_t *); |
| libc_hidden_proto (__sched_getaffinity_new) |
| # endif |
| |
| int |
| __sched_getaffinity_new (pid_t pid, size_t cpusetsize, cpu_set_t *cpuset) |
| { |
| int res = INLINE_SYSCALL (sched_getaffinity, 3, pid, |
| MIN (INT_MAX, cpusetsize), cpuset); |
| if (res != -1) |
| { |
| /* Clean the rest of the memory the kernel didn't do. */ |
| memset ((char *) cpuset + res, '\0', cpusetsize - res); |
| |
| res = 0; |
| } |
| return res; |
| } |
| versioned_symbol (libc, __sched_getaffinity_new, sched_getaffinity, |
| GLIBC_2_3_4); |
| |
| |
| # if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) |
| libc_hidden_def (__sched_getaffinity_new) |
| |
| int |
| attribute_compat_text_section |
| __sched_getaffinity_old (pid_t pid, cpu_set_t *cpuset) |
| { |
| /* The old interface by default assumed a 1024 processor bitmap. */ |
| return __sched_getaffinity_new (pid, 128, cpuset); |
| } |
| compat_symbol (libc, __sched_getaffinity_old, sched_getaffinity, GLIBC_2_3_3); |
| # endif |
| #else |
| # include <posix/sched_getaffinity.c> |
| #endif |