| Arnd Bergmann | 2864d32 | 2009-05-13 22:56:26 +0000 | [diff] [blame] | 1 | #ifndef __ASM_GENERIC_IPCBUF_H |
| 2 | #define __ASM_GENERIC_IPCBUF_H |
| 3 | |
| 4 | /* |
| 5 | * The generic ipc64_perm structure: |
| 6 | * Note extra padding because this structure is passed back and forth |
| 7 | * between kernel and user space. |
| 8 | * |
| 9 | * ipc64_perm was originally meant to be architecture specific, but |
| 10 | * everyone just ended up making identical copies without specific |
| 11 | * optimizations, so we may just as well all use the same one. |
| 12 | * |
| 13 | * Pad space is left for: |
| 14 | * - 32-bit mode_t on architectures that only had 16 bit |
| 15 | * - 32-bit seq |
| 16 | * - 2 miscellaneous 32-bit values |
| 17 | */ |
| 18 | |
| 19 | struct ipc64_perm { |
| 20 | __kernel_key_t key; |
| 21 | __kernel_uid32_t uid; |
| 22 | __kernel_gid32_t gid; |
| 23 | __kernel_uid32_t cuid; |
| 24 | __kernel_gid32_t cgid; |
| 25 | __kernel_mode_t mode; |
| 26 | /* pad if mode_t is u16: */ |
| 27 | unsigned char __pad1[4 - sizeof(__kernel_mode_t)]; |
| 28 | unsigned short seq; |
| 29 | unsigned short __pad2; |
| 30 | unsigned long __unused1; |
| 31 | unsigned long __unused2; |
| 32 | }; |
| 33 | |
| 34 | #endif /* __ASM_GENERIC_IPCBUF_H */ |