From: Dmitry V. Levin <ldv@altlinux.org>
Date: Fri, 22 Jul 2016 14:25:28 +0000 (+0000)
Subject: tests: check decoding of ipc syscall
X-Git-Tag: v4.13~11
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1a7c38dc52e588185cfb3c2d667abf3edfb56997;p=strace

tests: check decoding of ipc syscall

* tests/ipc.c: New file.
* tests/ipc.test: New test.
* tests/.gitignore: Add ipc.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add ipc.test.
---

diff --git a/tests/.gitignore b/tests/.gitignore
index d0a6183c..500ae69a 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -107,6 +107,7 @@ ioctl_v4l2
 ioperm
 iopl
 ip_mreq
+ipc
 ipc_msg
 ipc_msgbuf
 ipc_sem
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 6fae83ca..90230293 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -165,6 +165,7 @@ check_PROGRAMS = \
 	ioperm \
 	iopl \
 	ip_mreq \
+	ipc \
 	ipc_msg \
 	ipc_msgbuf \
 	ipc_sem \
@@ -494,6 +495,7 @@ DECODER_TESTS = \
 	ioperm.test \
 	iopl.test \
 	ip_mreq.test \
+	ipc.test \
 	ipc_msg.test \
 	ipc_msgbuf.test \
 	ipc_sem.test \
diff --git a/tests/ipc.c b/tests/ipc.c
new file mode 100644
index 00000000..c6e758c3
--- /dev/null
+++ b/tests/ipc.c
@@ -0,0 +1,122 @@
+/*
+ * Check decoding of ipc syscall.
+ *
+ * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include <sys/syscall.h>
+
+#if defined __NR_ipc && defined HAVE_LINUX_IPC_H
+
+# include <errno.h>
+# include <stdio.h>
+# include <unistd.h>
+# include <linux/ipc.h>
+
+# ifndef SEMCTL
+#  define SEMCTL 3
+# endif
+# ifdef MSGRCV
+#  define MSGRCV 12
+# endif
+
+static int
+ipc_call(const unsigned short version, const unsigned short call,
+	 long a1, long a2, long a3, long a4, long a5)
+{
+	const unsigned long val =
+		(unsigned long) 0xfacefeed00000000 |
+		(unsigned int) version << 16 |
+		call;
+
+	return syscall(__NR_ipc, val, a1, a2, a3, a4, a5);
+}
+
+static int
+ipc_call0(const unsigned short version, const unsigned short call)
+{
+	int rc = ipc_call(version, call, 0, 0, 0, 0, 0);
+	int saved_errno = errno;
+	printf("ipc(");
+	if (version)
+		printf("%hu<<16|", version);
+	errno = saved_errno;
+	printf("%hu, 0, 0, 0, 0%s) = %d %s (%m)\n", call,
+# ifdef __s390__
+	       "",
+# else
+	       ", 0",
+# endif
+	       rc, errno2name());
+	return rc;
+}
+
+int
+main(void)
+{
+	void *const efault = tail_alloc(1) + 1;
+
+	int rc = ipc_call(0, SEMCTL, 0, 0, 0, (long) efault, 0);
+	if (rc != -1 || EFAULT != errno)
+		perror_msg_and_skip("ipc");
+	printf("semctl(0, 0, IPC_RMID, %p) = -1 EFAULT (%m)\n", efault);
+
+	unsigned short call;
+	for (call = 0; call <= 40; call += 10) {
+		ipc_call0(0, call);
+		ipc_call0(42, call);
+	}
+
+	rc = ipc_call(42, SEMCTL, 0, 0, 0, (long) efault, 0);
+	int test_version = EFAULT == errno;
+	if (test_version)
+		printf("semctl(0, 0, IPC_RMID, %p) = %d %s (%m)\n",
+		       efault, rc, errno2name());
+	else
+		printf("ipc(42<<16|SEMCTL, 0, 0, 0, %p) = %d %s (%m)\n",
+		       efault, rc, errno2name());
+
+	if (test_version) {
+		const int msqid = -2;
+		const long msgsz = -3;
+		const long msgtyp = 0;
+
+		rc = ipc_call(1, MSGRCV,
+			      msqid, msgsz, IPC_NOWAIT, (long) efault, msgtyp);
+		printf("msgrcv(%d, %p, %lu, %ld, IPC_NOWAIT) = %d %s (%m)\n",
+		       msqid, efault, msgsz, msgtyp, rc, errno2name());
+	}
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_ipc && HAVE_LINUX_IPC_H")
+
+#endif
diff --git a/tests/ipc.test b/tests/ipc.test
new file mode 100755
index 00000000..aa33fa61
--- /dev/null
+++ b/tests/ipc.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check decoding of ipc syscall.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a19