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bits/ipc.h
46 строк
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Copyright (C) 1995-2026 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 <https://www.gnu.org/licenses/>. */ #ifndef _SYS_IPC_H # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." #endif #include <bits/types.h> /* Mode bits for `msgget', `semget', and `shmget'. */ #define IPC_CREAT 01000 /* create key if key does not exist */ #define IPC_EXCL 02000 /* fail if key exists */ #define IPC_NOWAIT 04000 /* return error on wait */ /* Control commands for `msgctl', `semctl', and `shmctl'. */ #define IPC_RMID 0 /* remove identifier */ #define IPC_SET 1 /* set `ipc_perm' options */ #define IPC_STAT 2 /* get `ipc_perm' options */ /* Special key values. */ #define IPC_PRIVATE ((key_t) 0) /* private key */ /* Data structure used to pass permission information to IPC operations. */ struct ipc_perm { __uid_t uid; /* owner's user ID */ __gid_t gid; /* owner's group ID */ __uid_t cuid; /* creator's user ID */ __gid_t cgid; /* creator's group ID */ __mode_t mode; /* read/write permission */ };