| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2002, 2007 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 18 | 02111-1307 USA. */ |
| 19 | |
| 20 | #include <errno.h> |
| 21 | #include <semaphore.h> |
| 22 | #include <lowlevellock.h> |
| 23 | #include "semaphoreP.h" |
| 24 | #include <bits/kernel-features.h> |
| 25 | |
| 26 | |
| 27 | int |
| 28 | __new_sem_init ( |
| 29 | sem_t *sem, |
| 30 | int pshared, |
| 31 | unsigned int value) |
| 32 | { |
| 33 | /* Parameter sanity check. */ |
| 34 | if (__builtin_expect (value > SEM_VALUE_MAX, 0)) |
| 35 | { |
| 36 | __set_errno (EINVAL); |
| 37 | return -1; |
| 38 | } |
| 39 | |
| 40 | /* Map to the internal type. */ |
| 41 | struct new_sem *isem = (struct new_sem *) sem; |
| 42 | |
| 43 | /* Use the values the user provided. */ |
| 44 | isem->value = value; |
| 45 | #ifdef __ASSUME_PRIVATE_FUTEX |
| 46 | isem->private = pshared ? 0 : FUTEX_PRIVATE_FLAG; |
| 47 | #else |
| 48 | isem->private = pshared ? 0 : THREAD_GETMEM (THREAD_SELF, |
| 49 | header.private_futex); |
| 50 | #endif |
| 51 | |
| 52 | isem->nwaiters = 0; |
| 53 | |
| 54 | return 0; |
| 55 | } |
| 56 | weak_alias(__new_sem_init, sem_init) |