Luigi Capogrosso
54 lines
912 B
C
54 lines
912 B
C
/// MentOS, The Mentoring Operating system project
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/// @file ipc.h
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/// @brief
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/// @copyright (c) 2019 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#pragma once
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#include "stddef.h"
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/// Create key if key does not exist.
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#define IPC_CREAT 01000
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/// Fail if key exists.
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#define IPC_EXCL 02000
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/// Return error on wait.
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#define IPC_NOWAIT 04000
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/// Remove identifier.
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#define IPC_RMID 0
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/// Set `ipc_perm' options.
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#define IPC_SET 1
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/// Get `ipc_perm' options.
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#define IPC_STAT 2
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/// See ipcs.
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#define IPC_INFO 3
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struct ipc_perm {
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/// Creator user id.
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uid_t cuid;
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/// Creator group id.
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gid_t cgid;
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/// User id.
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uid_t uid;
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/// Group id.
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gid_t gid;
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/// r/w permission.
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ushort mode;
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/// Sequence # (to generate unique msg/sem/shm id).
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ushort seq;
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/// User specified msg/sem/shm key.
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key_t key;
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};
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