1 files changed, 48 insertions, 0 deletions

diff --git a/arch/s390/include/asm/shmbuf.h b/arch/s390/include/asm/shmbuf.h
new file mode 100644
index 000000000000..eed2e280ce37
--- /dev/null
+++ b/arch/s390/include/asm/shmbuf.h
@@ -0,0 +1,48 @@
+#ifndef _S390_SHMBUF_H
+#define _S390_SHMBUF_H
+
+/* 
+ * The shmid64_ds structure for S/390 architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem (for !__s390x__)
+ * - 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 */
+#ifndef __s390x__
+        unsigned long           __unused1;
+#endif /* ! __s390x__ */
+        __kernel_time_t         shm_dtime;      /* last detach time */
+#ifndef __s390x__
+        unsigned long           __unused2;
+#endif /* ! __s390x__ */
+        __kernel_time_t         shm_ctime;      /* last change time */
+#ifndef __s390x__
+        unsigned long           __unused3;
+#endif /* ! __s390x__ */
+        __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 /* _S390_SHMBUF_H */