38 lines
1 KiB
C
38 lines
1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef __ASM_GENERIC_IPCBUF_H
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#define __ASM_GENERIC_IPCBUF_H
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#include <linux/posix_types.h>
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/*
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* The generic ipc64_perm structure:
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* Note extra padding because this structure is passed back and forth
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* between kernel and user space.
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*
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* ipc64_perm was originally meant to be architecture specific, but
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* everyone just ended up making identical copies without specific
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* optimizations, so we may just as well all use the same one.
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*
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* Pad space is left for:
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* - 32-bit mode_t on architectures that only had 16 bit
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* - 32-bit seq
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* - 2 miscellaneous 32-bit values
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*/
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struct ipc64_perm {
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__kernel_key_t key;
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__kernel_uid32_t uid;
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__kernel_gid32_t gid;
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__kernel_uid32_t cuid;
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__kernel_gid32_t cgid;
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__kernel_mode_t mode;
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/* pad if mode_t is u16: */
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unsigned char __pad1[4 - sizeof(__kernel_mode_t)];
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unsigned short seq;
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unsigned short __pad2;
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__kernel_ulong_t __unused1;
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__kernel_ulong_t __unused2;
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};
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#endif /* __ASM_GENERIC_IPCBUF_H */
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