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- /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
- #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;
- __kernel_ulong_t __unused1;
- __kernel_ulong_t __unused2;
- };
- #endif /* __ASM_GENERIC_IPCBUF_H */
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