cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / asm-generic / shmbuf.h

diff --git a/i686-linux-gnu-4.7/usr/include/asm-generic/shmbuf.h b/i686-linux-gnu-4.7/usr/include/asm-generic/shmbuf.h
new file mode 100644 (file)
index 0000000..e504422
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/asm-generic/shmbuf.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#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:
+ * - 2 miscellaneous 32-bit values
+ */
+
+struct shmid64_ds {
+       struct ipc64_perm       shm_perm;       /* operation perms */
+       size_t                  shm_segsz;      /* size of segment (bytes) */
+#if __BITS_PER_LONG == 64
+       __kernel_time_t         shm_atime;      /* last attach time */
+       __kernel_time_t         shm_dtime;      /* last detach time */
+       __kernel_time_t         shm_ctime;      /* last change time */
+#else
+       unsigned long           shm_atime;      /* last attach time */
+       unsigned long           shm_atime_high;
+       unsigned long           shm_dtime;      /* last detach time */
+       unsigned long           shm_dtime_high;
+       unsigned long           shm_ctime;      /* last change time */
+       unsigned long           shm_ctime_high;
+#endif
+       __kernel_pid_t          shm_cpid;       /* pid of creator */
+       __kernel_pid_t          shm_lpid;       /* pid of last operator */
+       unsigned long           shm_nattch;     /* no. of current attaches */
+       unsigned long           __unused4;
+       unsigned long           __unused5;
+};
+
+struct shminfo64 {
+       unsigned long           shmmax;
+       unsigned long           shmmin;
+       unsigned long           shmmni;
+       unsigned long           shmseg;
+       unsigned long           shmall;
+       unsigned long           __unused1;
+       unsigned long           __unused2;
+       unsigned long           __unused3;
+       unsigned long           __unused4;
+};
+
+#endif /* __ASM_GENERIC_SHMBUF_H */