From: Eugene Syromyatnikov <evgsyr@gmail.com>
Date: Sat, 10 Dec 2016 04:05:10 +0000 (+0300)
Subject: tests: check decoding of prctl operations without arguments
X-Git-Tag: v4.16~350
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6f4ecb2add8e0c143cddece2bf20a94396e9d741;p=strace

tests: check decoding of prctl operations without arguments

* tests/prctl-no-args.c: New file.
* tests/prctl-no-args.test: New test.
* tests/.gitignore: Add prctl-no-args.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add prctl-no-args.test.
---

diff --git a/tests/.gitignore b/tests/.gitignore
index fe0e0480..92b1120a 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -211,6 +211,7 @@ poll
 ppoll
 prctl-dumpable
 prctl-name
+prctl-no-args
 prctl-pdeathsig
 prctl-seccomp-filter-v
 prctl-seccomp-strict
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 65c90f09..488bfb82 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -271,6 +271,7 @@ check_PROGRAMS = \
 	ppoll \
 	prctl-dumpable \
 	prctl-name \
+	prctl-no-args \
 	prctl-pdeathsig \
 	prctl-seccomp-filter-v \
 	prctl-seccomp-strict \
@@ -654,6 +655,7 @@ DECODER_TESTS = \
 	ppoll.test \
 	prctl-dumpable.test \
 	prctl-name.test \
+	prctl-no-args.test \
 	prctl-pdeathsig.test \
 	prctl-seccomp-filter-v.test \
 	prctl-seccomp-strict.test \
diff --git a/tests/prctl-no-args.c b/tests/prctl-no-args.c
new file mode 100644
index 00000000..57e1b733
--- /dev/null
+++ b/tests/prctl-no-args.c
@@ -0,0 +1,77 @@
+/*
+ * Check decoding of prctl operations without arguments and return code parsing:
+ * PR_GET_KEEPCAPS, PR_GET_SECCOMP, PR_GET_TIMERSLACK, PR_GET_TIMING,
+ * PR_TASK_PERF_EVENTS_DISABLE, and PR_TASK_PERF_EVENTS_ENABLE.
+ *
+ * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
+ * 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 <asm/unistd.h>
+
+#if defined __NR_prctl
+
+# include <stdio.h>
+# include <unistd.h>
+# include <linux/prctl.h>
+
+int
+main(void)
+{
+	static const kernel_ulong_t bogus_op_bits =
+		(kernel_ulong_t) 0xbadc0ded00000000ULL;
+	static const kernel_ulong_t bogus_arg =
+		(kernel_ulong_t) 0xfacefeeddeadbeefULL;
+	static const struct {
+		kernel_ulong_t val;
+		const char *str;
+	} options[] = {
+		{  7, "PR_GET_KEEPCAPS" },
+		{ 13, "PR_GET_TIMING" },
+		{ 21, "PR_GET_SECCOMP" },
+		{ 30, "PR_GET_TIMERSLACK" },
+		{ 31, "PR_TASK_PERF_EVENTS_DISABLE" },
+		{ 32, "PR_TASK_PERF_EVENTS_ENABLE" },
+	};
+
+	unsigned int *ptr = tail_alloc(sizeof(*ptr));
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(options); i++) {
+		long rc = syscall(__NR_prctl, options[i].val | bogus_op_bits,
+				  bogus_arg);
+		printf("prctl(%s) = %s\n", options[i].str, sprintrc(rc));
+	}
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_prctl")
+
+#endif
diff --git a/tests/prctl-no-args.test b/tests/prctl-no-args.test
new file mode 100755
index 00000000..ce8ca67b
--- /dev/null
+++ b/tests/prctl-no-args.test
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# Check decoding of prctl PR_GET_KEEPCAPS, PR_GET_SECCOMP, PR_GET_TIMERSLACK,
+# PR_GET_TIMING, PR_TASK_PERF_EVENTS_DISABLE, and PR_TASK_PERF_EVENTS_ENABLE
+# operations.
+. "${srcdir=.}/init.sh"
+
+check_prog grep
+run_prog > /dev/null
+run_strace -a21 -eprctl $args > "$EXP"
+grep -v '^prctl(PR_[GS]ET_[^KST][^EI][^CEM]' < "$LOG" > "$OUT"
+match_diff "$OUT" "$EXP"
+
+rm -f "$EXP" "$OUT"