1 files changed, 56 insertions, 0 deletions
diff --git a/test/zdtm/static/netns_sub_sysctl.c b/test/zdtm/static/netns_sub_sysctl.c
new file mode 100644
index 000000000..bf828e08e
--- /dev/null
+++ b/test/zdtm/static/netns_sub_sysctl.c
@@ -0,0 +1,56 @@
+#include <sched.h>
+
+#include "zdtmtst.h"
+#include "sysctl.h"
+
+const char *test_doc	= "Check dump and restore a net.unix.max_dgram_qlen sysctl parameter in subns";
+const char *test_author	= "Alexander Mikhalitsyn <alexander@mihalicyn.com>";
+
+typedef struct {
+	const char *path;
+	int old;
+	int new;
+} sysctl_opt_t;
+
+#define CONF_UNIX_BASE	"/proc/sys/net/unix"
+
+static sysctl_opt_t net_unix_params[] = {
+	{CONF_UNIX_BASE"/max_dgram_qlen", 0, 0},
+	{NULL, 0, 0}
+};
+
+int main(int argc, char **argv)
+{
+	int ret = 0;
+	sysctl_opt_t *p;
+	test_init(argc, argv);
+
+	for (p = net_unix_params; p->path != NULL; p++) {
+		p->old = (((unsigned)lrand48()) % 1023) + 1;
+		if (sysctl_write_int(p->path, p->old)) {
+			pr_perror("Can't change %s", p->path);
+			return -1;
+		}
+	}
+
+	test_daemon();
+	test_waitsig();
+
+	for (p = net_unix_params; p->path != NULL; p++) {
+		if (sysctl_read_int(p->path, &p->new))
+			ret = 1;
+
+		if (p->old != p->new) {
+			errno = EINVAL;
+			pr_perror("%s changed: %d ---> %d", p->path, p->old, p->new);
+			ret = 1;
+		}
+	}
+
+	if (ret)
+		fail();
+	else
+		pass();
+
+	return ret;
+}