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