tests: check decoding of unshare syscall

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

diff --git a/tests/.gitignore b/tests/.gitignore
index a11ac64b5ea1b43361fadc7e4b83785177c16895..0d6fbf8a444db72f79b36b43667c736235f94e16 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -316,6 +316,7 @@ unix-pair-send-recv
 unix-pair-sendto-recvfrom
 unlink
 unlinkat
+unshare
 userfaultfd
 utime
 utimensat

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 990df66bf400fc5198ae963b3400940581339b04..3eb95659f45d9de33d6480277c40fa558ef99701 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -374,6 +374,7 @@ check_PROGRAMS = \
        unix-pair-sendto-recvfrom \
        unlink \
        unlinkat \
+       unshare \
        userfaultfd \
        utime \
        utimensat \
@@ -722,6 +723,7 @@ DECODER_TESTS = \
        unix-pair-sendto-recvfrom.test \
        unlink.test \
        unlinkat.test \
+       unshare.test \
        userfaultfd.test \
        utime.test \
        utimensat.test \

diff --git a/tests/unshare.c b/tests/unshare.c
new file mode 100644 (file)
index 0000000..7b702dc
--- /dev/null
+++ b/tests/unshare.c
@@ -0,0 +1,82 @@
+/*
+ * Check decoding of unshare syscall.
+ *
+ * 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>
+
+#ifdef __NR_unshare
+
+# include <stdio.h>
+# include <unistd.h>
+
+# include "kernel_types.h"
+
+int
+main(void)
+{
+       static const kernel_ulong_t bogus_flags =
+               (kernel_ulong_t) 0xbadc0ded0000000fULL;
+
+       static struct {
+               kernel_ulong_t val;
+               const char *str;
+       } unshare_flags[] = {
+               { ARG_STR(0) },
+               { 0xdeadca75,
+                       "CLONE_THREAD|CLONE_FS|CLONE_SIGHAND|CLONE_SYSVSEM|"
+                       "CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET|CLONE_NEWUSER|"
+                       "CLONE_NEWCGROUP|0x80a8c075" },
+               { 0x2000000, "CLONE_NEWCGROUP" },
+               { ARG_STR(0x81f8f0ff) " /* CLONE_??? */" },
+       };
+
+       long rc;
+       unsigned int i;
+
+       rc = syscall(__NR_unshare, bogus_flags);
+       printf("unshare(%#llx /* CLONE_??? */) = %s\n",
+              (unsigned long long) bogus_flags, sprintrc(rc));
+
+       for (i = 0; i < ARRAY_SIZE(unshare_flags); i++) {
+               rc = syscall(__NR_unshare, unshare_flags[i].val);
+               printf("unshare(%s) = %s\n",
+                      unshare_flags[i].str, sprintrc(rc));
+       }
+
+       puts("+++ exited with 0 +++");
+
+       return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_unshare");
+
+#endif

diff --git a/tests/unshare.test b/tests/unshare.test
new file mode 100755 (executable)
index 0000000..ccb9575
--- /dev/null
+++ b/tests/unshare.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check decoding of setns syscall.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a11