Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / uapi / asm-generic / msgbuf.h

diff --git a/kernel/include/uapi/asm-generic/msgbuf.h b/kernel/include/uapi/asm-generic/msgbuf.h
new file mode 100644 (file)
index 0000000..f55ecc4
--- /dev/null
+++ b/kernel/include/uapi/asm-generic/msgbuf.h
@@ -0,0 +1,47 @@
+#ifndef __ASM_GENERIC_MSGBUF_H
+#define __ASM_GENERIC_MSGBUF_H
+
+#include <asm/bitsperlong.h>
+/*
+ * generic msqid64_ds structure.
+ *
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * msqid64_ds 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.
+ *
+ * 64 bit architectures typically define a 64 bit __kernel_time_t,
+ * so they do not need the first three padding words.
+ * On big-endian systems, the padding is in the wrong place.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct msqid64_ds {
+       struct ipc64_perm msg_perm;
+       __kernel_time_t msg_stime;      /* last msgsnd time */
+#if __BITS_PER_LONG != 64
+       unsigned long   __unused1;
+#endif
+       __kernel_time_t msg_rtime;      /* last msgrcv time */
+#if __BITS_PER_LONG != 64
+       unsigned long   __unused2;
+#endif
+       __kernel_time_t msg_ctime;      /* last change time */
+#if __BITS_PER_LONG != 64
+       unsigned long   __unused3;
+#endif
+       __kernel_ulong_t msg_cbytes;    /* current number of bytes on queue */
+       __kernel_ulong_t msg_qnum;      /* number of messages in queue */
+       __kernel_ulong_t msg_qbytes;    /* max number of bytes on queue */
+       __kernel_pid_t msg_lspid;       /* pid of last msgsnd */
+       __kernel_pid_t msg_lrpid;       /* last receive pid */
+       __kernel_ulong_t __unused4;
+       __kernel_ulong_t __unused5;
+};
+
+#endif /* __ASM_GENERIC_MSGBUF_H */