Add in the sysvipc patch from Michael Shmulevich

1 files changed, 82 insertions, 0 deletions

diff --git a/libc/misc/sysvipc/shm.c b/libc/misc/sysvipc/shm.c
new file mode 100644
index 000000000..5fdfe6ca7
--- /dev/null
+++ b/libc/misc/sysvipc/shm.c
@@ -0,0 +1,82 @@
+/* Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/shm.h>
+#include "ipc.h"
+
+#ifdef L_shmat
+/* Attach the shared memory segment associated with SHMID to the data
+   segment of the calling process.  SHMADDR and SHMFLG determine how
+   and where the segment is attached.  */
+
+void *
+shmat (shmid, shmaddr, shmflg)
+    int shmid;
+    const void *shmaddr;
+    int shmflg;
+{
+    int retval;
+    unsigned long raddr;
+
+    retval = __ipc(IPCOP_shmat, shmid, shmflg, (int) &raddr, (void *) shmaddr);
+    return ((unsigned long int) retval > -(unsigned long int) SHMLBA
+	    ? (void *) retval : (void *) raddr);
+}
+#endif
+
+#ifdef L_shmctl
+/* Provide operations to control over shared memory segments.  */
+
+int
+shmctl (shmid, cmd, buf)
+    int shmid;
+    int cmd;
+    struct shmid_ds *buf;
+{
+    return __ipc(IPCOP_shmctl, shmid, cmd, 0, buf);
+}
+#endif
+
+
+#ifdef L_shmdt
+/* Detach shared memory segment starting at address specified by SHMADDR
+   from the caller's data segment.  */
+
+int
+shmdt (shmaddr)
+    const void *shmaddr;
+{
+    return __ipc(IPCOP_shmdt, 0, 0, 0, (void *) shmaddr);
+}
+#endif
+
+#ifdef L_shmget
+/* Return an identifier for an shared memory segment of at least size SIZE
+   which is associated with KEY.  */
+
+int
+shmget (key, size, shmflg)
+    key_t key;
+    size_t size;
+    int shmflg;
+{
+    return __ipc(IPCOP_shmget, key, size, shmflg, NULL);
+}
+#endif