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41 lines
1.7 KiB
C
41 lines
1.7 KiB
C
/* struct ipc_perm definition.
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Copyright (C) 2019-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _SYS_IPC_H
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# error "Never use <bits/ipc-perm.h> directly; include <sys/ipc.h> instead."
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#endif
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/* Data structure used to pass permission information to IPC operations.
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It follows the kernel ipc64_perm size so the syscall can be made directly
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without temporary buffer copy. However, since glibc defines the MODE
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field as mode_t per POSIX definition (BZ#18231), it omits the __PAD1 field
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(since glibc does not export mode_t as 16-bit for any architecture). */
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struct ipc_perm
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{
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__key_t __key; /* Key. */
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__uid_t uid; /* Owner's user ID. */
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__gid_t gid; /* Owner's group ID. */
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__uid_t cuid; /* Creator's user ID. */
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__gid_t cgid; /* Creator's group ID. */
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__mode_t mode; /* Read/write permission. */
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unsigned short int __seq; /* Sequence number. */
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unsigned short int __pad2;
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__syscall_ulong_t __glibc_reserved1;
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__syscall_ulong_t __glibc_reserved2;
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};
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