1 files changed, 34 insertions, 0 deletions

diff --git a/include/asm-generic/ipcbuf.h b/include/asm-generic/ipcbuf.h
new file mode 100644
index 000000000000..76982b2a1b58
--- /dev/null
+++ b/include/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 */