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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /include/uapi/asm-generic/ipcbuf.h
Initial import
Diffstat (limited to 'include/uapi/asm-generic/ipcbuf.h')
-rw-r--r--include/uapi/asm-generic/ipcbuf.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/include/uapi/asm-generic/ipcbuf.h b/include/uapi/asm-generic/ipcbuf.h
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index 000000000..3dbcc1e77
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+++ 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;
+ __kernel_ulong_t __unused1;
+ __kernel_ulong_t __unused2;
+};
+
+#endif /* __ASM_GENERIC_IPCBUF_H */