1 /* struct ipc_perm definition. 2 Copyright (C) 2019-2022 Free Software Foundation, Inc. 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 17 <http://www.gnu.org/licenses/>. */ 18 19 #ifndef _SYS_IPC_H 20 # error "Never use <bits/ipc-perm.h> directly; include <sys/ipc.h> instead." 21 #endif 22 23 /* Data structure used to pass permission information to IPC operations. */ 24 struct ipc_perm 25 { 26 __key_t __key; /* Key. */ 27 __uid_t uid; /* Owner's user ID. */ 28 __gid_t gid; /* Owner's group ID. */ 29 __uid_t cuid; /* Creator's user ID. */ 30 __gid_t cgid; /* Creator's group ID. */ 31 __mode_t mode; /* Read/write permission. */ 32 unsigned short int __pad2; 33 unsigned short int __seq; /* Sequence number. */ 34 unsigned int __pad3; 35 __extension__ unsigned long long int __glibc_reserved1; 36 __extension__ unsigned long long int __glibc_reserved2; 37 }; 38