| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | #ifndef __ASM_GENERIC_IPCBUF_H |
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| 3 | #define __ASM_GENERIC_IPCBUF_H |
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| 4 | |
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| 5 | #include <linux/posix_types.h> |
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| 6 | |
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| 7 | /* |
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| 8 | * The generic ipc64_perm structure: |
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| 9 | * Note extra padding because this structure is passed back and forth |
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| 10 | * between kernel and user space. |
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| 11 | * |
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| 12 | * ipc64_perm was originally meant to be architecture specific, but |
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| 13 | * everyone just ended up making identical copies without specific |
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| 14 | * optimizations, so we may just as well all use the same one. |
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| 15 | * |
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| 16 | * Pad space is left for: |
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| 17 | * - 32-bit mode_t on architectures that only had 16 bit |
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| 18 | * - 32-bit seq |
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| 19 | * - 2 miscellaneous 32-bit values |
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| 20 | */ |
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| 21 | |
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| 22 | struct ipc64_perm { |
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| 23 | __kernel_key_t key; |
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| 24 | __kernel_uid32_t uid; |
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| 25 | __kernel_gid32_t gid; |
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| 26 | __kernel_uid32_t cuid; |
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| 27 | __kernel_gid32_t cgid; |
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| 28 | __kernel_mode_t mode; |
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| 29 | /* pad if mode_t is u16: */ |
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| 30 | unsigned char __pad1[4 - sizeof(__kernel_mode_t)]; |
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| 31 | unsigned short seq; |
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| 32 | unsigned short __pad2; |
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| 33 | __kernel_ulong_t __unused1; |
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| 34 | __kernel_ulong_t __unused2; |
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| 35 | }; |
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| 36 | |
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| 37 | #endif /* __ASM_GENERIC_IPCBUF_H */ |
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| 38 | |
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