Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/include/uapi/asm-generic/shmbuf.h b/kernel/include/uapi/asm-generic/shmbuf.h
new file mode 100644 (file)
index 0000000..7e9fb2f
--- /dev/null
+++ b/kernel/include/uapi/asm-generic/shmbuf.h
@@ -0,0 +1,59 @@
+#ifndef __ASM_GENERIC_SHMBUF_H
+#define __ASM_GENERIC_SHMBUF_H
+
+#include <asm/bitsperlong.h>
+
+/*
+ * The shmid64_ds structure for x86 architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * shmid64_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 two 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 shmid64_ds {
+       struct ipc64_perm       shm_perm;       /* operation perms */
+       size_t                  shm_segsz;      /* size of segment (bytes) */
+       __kernel_time_t         shm_atime;      /* last attach time */
+#if __BITS_PER_LONG != 64
+       unsigned long           __unused1;
+#endif
+       __kernel_time_t         shm_dtime;      /* last detach time */
+#if __BITS_PER_LONG != 64
+       unsigned long           __unused2;
+#endif
+       __kernel_time_t         shm_ctime;      /* last change time */
+#if __BITS_PER_LONG != 64
+       unsigned long           __unused3;
+#endif
+       __kernel_pid_t          shm_cpid;       /* pid of creator */
+       __kernel_pid_t          shm_lpid;       /* pid of last operator */
+       __kernel_ulong_t        shm_nattch;     /* no. of current attaches */
+       __kernel_ulong_t        __unused4;
+       __kernel_ulong_t        __unused5;
+};
+
+struct shminfo64 {
+       __kernel_ulong_t        shmmax;
+       __kernel_ulong_t        shmmin;
+       __kernel_ulong_t        shmmni;
+       __kernel_ulong_t        shmseg;
+       __kernel_ulong_t        shmall;
+       __kernel_ulong_t        __unused1;
+       __kernel_ulong_t        __unused2;
+       __kernel_ulong_t        __unused3;
+       __kernel_ulong_t        __unused4;
+};
+
+#endif /* __ASM_GENERIC_SHMBUF_H */