[CRIU] [PATCH v4 2/3] zdtm: Add userns02 test

[Kirill Tkhai]

Differs to userns01 test by unsharing net net in child.
This should test nested user/net ns interaction.

Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
---
 test/zdtm/static/Makefile      |    2 ++
 test/zdtm/static/userns01.c    |    8 ++++++--
 test/zdtm/static/userns02.c    |    1 +
 test/zdtm/static/userns02.desc |    1 +
 4 files changed, 10 insertions(+), 2 deletions(-)
 create mode 120000 test/zdtm/static/userns02.c
 create mode 120000 test/zdtm/static/userns02.desc

diff --git a/test/zdtm/static/Makefile b/test/zdtm/static/Makefile
index 84c73c480..02bf54d35 100644
--- a/test/zdtm/static/Makefile
+++ b/test/zdtm/static/Makefile
@@ -179,6 +179,7 @@ TST_NOFILE	:=				\
 		netns_sub			\
 		userns00			\
 		userns01			\
+		userns02			\
 #		jobctl00			\
 
 ifneq ($(SRCARCH),arm)
@@ -466,6 +467,7 @@ socket-tcp6-closing:	override CFLAGS += -D ZDTM_IPV6
 socket-tcp6-unconn:	override CFLAGS += -D ZDTM_IPV6
 
 pty-console:		override CFLAGS += -D ZDTM_DEV_CONSOLE
+userns02:		override CFLAGS += -D USERNS02
 
 $(LIB):	force
 	$(Q) $(MAKE) -C $(LIBDIR)
diff --git a/test/zdtm/static/userns01.c b/test/zdtm/static/userns01.c
index 7830909cc..4d2a9d937 100644
--- a/test/zdtm/static/userns01.c
+++ b/test/zdtm/static/userns01.c
@@ -78,9 +78,13 @@ int child(void)
 	gid_t gid_list2[ARRAY_SIZE(gid_list) + 1];
 	uid_t uid, euid, suid, fsuid;
 	gid_t gid, egid, sgid, fsgid;
-	int i, nr, ret;
+	int i, nr, flags, ret;
 
-	ret = unshare(CLONE_NEWUSER);
+	flags = CLONE_NEWUSER;
+#ifdef USERNS02
+	flags |= CLONE_NEWNET;
+#endif
+	ret = unshare(flags);
 	if (ret < 0) {
 		pr_perror("unshare");
 		futex_set_and_wake(futex, EMERGENCY_ABORT);
diff --git a/test/zdtm/static/userns02.c b/test/zdtm/static/userns02.c
new file mode 120000
index 000000000..d9ce9246a
--- /dev/null
+++ b/test/zdtm/static/userns02.c
@@ -0,0 +1 @@
+userns01.c
\ No newline at end of file
diff --git a/test/zdtm/static/userns02.desc b/test/zdtm/static/userns02.desc
new file mode 120000
index 000000000..0112fa7b9
--- /dev/null
+++ b/test/zdtm/static/userns02.desc
@@ -0,0 +1 @@
+userns01.desc
\ No newline at end of file