[CRIU] [PATCH] test: sockets_dgram -- Don't use /tmp

[Cyrill Gorcunov]

Initially when we didn't support relative names
in unix sockets we faced a problem that absolute
paths might be too long for testing environments.

Lets switch to automatically generated directory
name because on some distros /tmp get cleaned
by a system's init scripts and may cause problems.

Signed-off-by: Cyrill Gorcunov <gorcunov at gmail.com>
---
 test/zdtm/static/Makefile        |  2 +-
 test/zdtm/static/sockets_dgram.c | 18 ++++++++----------
 2 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/test/zdtm/static/Makefile b/test/zdtm/static/Makefile
index 303ed7d40ffe..869f26197e85 100644
--- a/test/zdtm/static/Makefile
+++ b/test/zdtm/static/Makefile
@@ -262,7 +262,6 @@ TST_FILE	=				\
 		fdt_shared			\
 		sockets00			\
 		sockets03			\
-		sockets_dgram			\
 		file_lease00			\
 		file_lease01			\
 		file_lease02			\
@@ -351,6 +350,7 @@ TST_DIR_FILE	=				\
 		chroot				\
 		chroot-file			\
 		binfmt_misc			\
+		sockets_dgram			\
 
 TST		=				\
 		$(TST_NOFILE)			\
diff --git a/test/zdtm/static/sockets_dgram.c b/test/zdtm/static/sockets_dgram.c
index f135a3bbf224..75b4fce25f49 100644
--- a/test/zdtm/static/sockets_dgram.c
+++ b/test/zdtm/static/sockets_dgram.c
@@ -20,6 +20,9 @@ const char *test_author	= "Cyrill Gorcunov <gorcunov at openvz.org";
 #define SK_DATA_CONN		"data-packet-conn"
 #define SK_DATA_BOUND_CONN	"data-packet-bound-conn"
 
+char *dirname;
+TEST_OPTION(dirname, string, "directory name", 1);
+
 char *filename;
 TEST_OPTION(filename, string, "socket file name", 1);
 
@@ -37,21 +40,16 @@ int main(int argc, char *argv[])
 
 	char path[PATH_MAX];
 	char buf[64];
-	/*
-	 * The original code makes dir to be current working
-	 * directory. But it may be too long in google environment
-	 * for path to be fit into struct sockaddr_un.
-	 * One alternate way to resolve it is to use relative path
-	 * for sockaddr_un, but criu has not supported relative
-	 * bind path yet.
-	 * We change it to "/tmp" to ensure its short length.
-	 */
-	char *dirname = "/tmp";
 
 	int ret;
 
 	test_init(argc, argv);
 
+	if (mkdir(dirname, 0700)) {
+		pr_perror("Can't create %s", dirname);
+		return 1;
+	}
+
 	snprintf(path, sizeof(path), "%s/%s", dirname, filename);
 	unlink(path);
 
-- 
2.20.1