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e9fed243 | 1 | /* Header for directory for shm/sem files. |
2b778ceb | 2 | Copyright (C) 2014-2021 Free Software Foundation, Inc. |
e4f639e4 RM |
3 | This file is part of the GNU C Library. |
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, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
e4f639e4 RM |
18 | |
19 | #ifndef _SHM_DIRECTORY_H | |
20 | ||
e9fed243 FW |
21 | #include <limits.h> |
22 | #include <paths.h> | |
23 | #include <stdbool.h> | |
24 | ||
25 | /* The directory that contains shared POSIX objects. */ | |
26 | #define SHMDIR _PATH_DEV "shm/" | |
27 | ||
28 | struct shmdir_name | |
29 | { | |
30 | /* The combined prefix/name. The sizeof includes the terminating | |
31 | NUL byte. 4 bytes are needed for the optional "sem." prefix. */ | |
32 | char name[sizeof (SHMDIR) + 4 + NAME_MAX]; | |
33 | }; | |
34 | ||
35 | /* Sets RESULT->name to the constructed name and returns 0 on success, | |
36 | or -1 on failure. Includes the "sem." prefix in the name if | |
37 | SEM_PREFIX is true. */ | |
38 | int __shm_get_name (struct shmdir_name *result, const char *name, | |
39 | bool sem_prefix); | |
e4f639e4 RM |
40 | |
41 | #endif /* shm-directory.h */ |