From: Christian Brauner Date: Wed, 29 Oct 2025 12:21:15 +0000 (+0100) Subject: selftests/namespaces: eigth inactive namespace resurrection test X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6de17ec3ccc1eab51601f1b37332cdb384a3a3c9;p=thirdparty%2Flinux.git selftests/namespaces: eigth inactive namespace resurrection test Test IPv6 sockets also work with SIOCGSKNS. Link: https://patch.msgid.link/20251029-work-namespace-nstree-listns-v4-62-2e6f823ebdc0@kernel.org Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Jeff Layton Signed-off-by: Christian Brauner --- diff --git a/tools/testing/selftests/namespaces/siocgskns_test.c b/tools/testing/selftests/namespaces/siocgskns_test.c index 60028eeecde07..47c1524a86482 100644 --- a/tools/testing/selftests/namespaces/siocgskns_test.c +++ b/tools/testing/selftests/namespaces/siocgskns_test.c @@ -542,4 +542,38 @@ TEST(siocgskns_netns_lifecycle) close(sock_fd); } +/* + * Test IPv6 sockets also work with SIOCGSKNS. + */ +TEST(siocgskns_ipv6) +{ + int sock_fd, netns_fd, current_netns_fd; + struct stat st1, st2; + + /* Create an IPv6 TCP socket */ + sock_fd = socket(AF_INET6, SOCK_STREAM, 0); + ASSERT_GE(sock_fd, 0); + + /* Use SIOCGSKNS */ + netns_fd = ioctl(sock_fd, SIOCGSKNS); + if (netns_fd < 0) { + close(sock_fd); + if (errno == ENOTTY || errno == EINVAL) + SKIP(return, "SIOCGSKNS not supported"); + ASSERT_GE(netns_fd, 0); + } + + /* Verify it matches current namespace */ + current_netns_fd = open("/proc/self/ns/net", O_RDONLY); + ASSERT_GE(current_netns_fd, 0); + + ASSERT_EQ(fstat(netns_fd, &st1), 0); + ASSERT_EQ(fstat(current_netns_fd, &st2), 0); + ASSERT_EQ(st1.st_ino, st2.st_ino); + + close(sock_fd); + close(netns_fd); + close(current_netns_fd); +} + TEST_HARNESS_MAIN