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Diffstat (limited to 'include/uapi/asm-generic/ipcbuf.h')
| -rw-r--r-- | include/uapi/asm-generic/ipcbuf.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/uapi/asm-generic/ipcbuf.h b/include/uapi/asm-generic/ipcbuf.h new file mode 100644 index 00000000000..76982b2a1b5 --- /dev/null +++ b/include/uapi/asm-generic/ipcbuf.h @@ -0,0 +1,34 @@ +#ifndef __ASM_GENERIC_IPCBUF_H +#define __ASM_GENERIC_IPCBUF_H + +/* + * The generic ipc64_perm structure: + * Note extra padding because this structure is passed back and forth + * between kernel and user space. + * + * ipc64_perm was originally meant to be architecture specific, but + * everyone just ended up making identical copies without specific + * optimizations, so we may just as well all use the same one. + * + * Pad space is left for: + * - 32-bit mode_t on architectures that only had 16 bit + * - 32-bit seq + * - 2 miscellaneous 32-bit values + */ + +struct ipc64_perm { + __kernel_key_t key; + __kernel_uid32_t uid; + __kernel_gid32_t gid; + __kernel_uid32_t cuid; + __kernel_gid32_t cgid; + __kernel_mode_t mode; + /* pad if mode_t is u16: */ + unsigned char __pad1[4 - sizeof(__kernel_mode_t)]; + unsigned short seq; + unsigned short __pad2; + unsigned long __unused1; + unsigned long __unused2; +}; + +#endif /* __ASM_GENERIC_IPCBUF_H */ |