Enrico Fraccaroli (Galfurian)
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/// @file ipc.h
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/// @brief Inter-Process Communication (IPC) structures.
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/// @copyright (c) 2014-2024 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 "sys/types.h"
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#include "stddef.h"
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#define IPC_CREAT 01000 ///< Create key if key does not exist.
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#define IPC_EXCL 02000 ///< Fail if key exists.
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#define IPC_NOWAIT 04000 ///< Return error on wait.
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#define IPC_RMID 0 ///< Remove identifier.
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#define IPC_SET 1 ///< Set `ipc_perm' options.
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#define IPC_STAT 2 ///< Get `ipc_perm' options.
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#define IPC_INFO 3 ///< See ipcs.
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#define IPC_PRIVATE ((key_t)0) ///< assures getting a new ipc_key.
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/// @brief Permission details of an IPC object.
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struct ipc_perm {
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/// Key associated to the IPC.
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key_t key;
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/// Effective UID of owner.
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uid_t uid;
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/// Effective GID of owner.
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gid_t gid;
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/// Effective UID of creator.
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uid_t cuid;
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/// Effective GID of creator.
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gid_t cgid;
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/// Permissions.
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unsigned short mode;
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/// Sequence number.
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unsigned short __seq;
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};
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/// @brief Returns a possible IPC key based upon the filepath and the id.
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/// @param path The file path.
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/// @param id the project id.
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/// @return the IPC key.
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key_t ftok(char *path, int id);
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