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- /* struct ipc_perm definition.
- Copyright (C) 2019-2021 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
- <http://www.gnu.org/licenses/>. */
- #ifndef _SYS_IPC_H
- # error "Never use <bits/ipc-perm.h> directly; include <sys/ipc.h> instead."
- #endif
- /* Data structure used to pass permission information to IPC operations.
- It follows the kernel ipc64_perm size so the syscall can be made directly
- without temporary buffer copy. However, since glibc defines the MODE
- field as mode_t per POSIX definition (BZ#18231), it omits the __PAD1 field
- (since glibc does not export mode_t as 16-bit for any architecture). */
- struct ipc_perm
- {
- __key_t __key; /* Key. */
- __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. */
- unsigned short int __seq; /* Sequence number. */
- unsigned short int __pad2;
- __syscall_ulong_t __glibc_reserved1;
- __syscall_ulong_t __glibc_reserved2;
- };
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