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[PATCH] Restore sparc64 implementation of semctl
- From: Andreas Schwab <schwab at suse dot de>
- To: libc-alpha at sourceware dot org
- Date: Thu, 17 Sep 2015 16:21:11 +0200
- Subject: [PATCH] Restore sparc64 implementation of semctl
- Authentication-results: sourceware.org; auth=none
The sparc64 variant of the ipc syscall does not dereference the pointer
argument for the SEMCTL operation.
Committed.
Andreas.
* sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c: Readd.
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c b/sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c
new file mode 100644
index 0000000..2714728
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1995-2015 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <stdarg.h>
+#include <sys/sem.h>
+#include <ipc_priv.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+
+/* Define a `union semun' suitable for Linux here. */
+union semun
+{
+ int val; /* value for SETVAL */
+ struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */
+ unsigned short int *array; /* array for GETALL & SETALL */
+ struct seminfo *__buf; /* buffer for IPC_INFO */
+};
+
+/* Return identifier for array of NSEMS semaphores associated with
+ KEY. */
+
+int
+semctl (int semid, int semnum, int cmd, ...)
+{
+ union semun arg;
+ va_list ap;
+
+ va_start (ap, cmd);
+
+ /* Get the argument. */
+ arg = va_arg (ap, union semun);
+
+ va_end (ap);
+
+ return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd,
+ arg.array);
+}
--
2.5.2
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."