[CRIU] [PATCH 8/8] unix: test -- Add sk-unix01 test
Cyrill Gorcunov
gorcunov at gmail.com
Sat Jun 9 16:06:56 MSK 2018
To test the case where sockets are removed
together with directory they are living in.
Signed-off-by: Cyrill Gorcunov <gorcunov at gmail.com>
---
test/zdtm/static/Makefile | 1 +
test/zdtm/static/sk-unix01.c | 367 ++++++++++++++++++++++++++++++++++++++++
test/zdtm/static/sk-unix01.desc | 1 +
3 files changed, 369 insertions(+)
create mode 100644 test/zdtm/static/sk-unix01.c
create mode 100644 test/zdtm/static/sk-unix01.desc
diff --git a/test/zdtm/static/Makefile b/test/zdtm/static/Makefile
index b232a8c80e23..d61ef33b9fe5 100644
--- a/test/zdtm/static/Makefile
+++ b/test/zdtm/static/Makefile
@@ -344,6 +344,7 @@ TST_DIR = \
autofs \
del_standalone_un \
sk-unix-mntns \
+ sk-unix01 \
TST_DIR_FILE = \
chroot \
diff --git a/test/zdtm/static/sk-unix01.c b/test/zdtm/static/sk-unix01.c
new file mode 100644
index 000000000000..c6c199657f39
--- /dev/null
+++ b/test/zdtm/static/sk-unix01.c
@@ -0,0 +1,367 @@
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdbool.h>
+#include <limits.h>
+#include <errno.h>
+#include <dirent.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/stat.h>
+
+#include "zdtmtst.h"
+
+const char *test_doc = "Check that deleted unix sockets with dirs are restored correctly";
+const char *test_author = "Cyrill Gorcunov <gorcunov at openvz.org>";
+
+char *dirname;
+TEST_OPTION(dirname, string, "directory name", 1);
+
+static int fill_sock_name(struct sockaddr_un *name, const char *filename)
+{
+ char *cwd;
+
+ cwd = get_current_dir_name();
+ if (strlen(filename) + strlen(cwd) + 1 >= sizeof(name->sun_path)) {
+ pr_err("Name %s/%s is too long for socket\n",
+ cwd, filename);
+ return -1;
+ }
+
+ name->sun_family = AF_LOCAL;
+ ssprintf(name->sun_path, "%s/%s", cwd, filename);
+ return 0;
+}
+
+static int sk_alloc_bind(int type, struct sockaddr_un *addr)
+{
+ int sk;
+
+ sk = socket(PF_UNIX, type, 0);
+ if (sk < 0) {
+ pr_perror("socket");
+ return -1;
+ }
+
+ if (addr && bind(sk, (const struct sockaddr *)addr, sizeof(*addr))) {
+ pr_perror("bind %s", addr->sun_path);
+ close(sk);
+ return -1;
+ }
+
+ return sk;
+}
+
+static int sk_alloc_connect(int type, struct sockaddr_un *addr)
+{
+ int sk;
+
+ sk = socket(PF_UNIX, type, 0);
+ if (sk < 0) {
+ pr_perror("socket");
+ return -1;
+ }
+
+ if (connect(sk, (const struct sockaddr *)addr, sizeof(*addr))) {
+ pr_perror("connect %s", addr->sun_path);
+ close(sk);
+ return -1;
+ }
+
+ return sk;
+}
+
+int main(int argc, char **argv)
+{
+ int c1 = 1, c2 = 0, c3 = 3, c4 = 0;
+ int c5 = 5, c6 = 0, c7 = 7, c8 = 0;
+ int c9 = 8, c10 = 0;
+ char filename[PATH_MAX];
+ char subdir_dg[PATH_MAX];
+ char subdir_st[PATH_MAX];
+ struct sockaddr_un addr_from;
+ struct sockaddr_un addr;
+ int sk_dgram_pair[2];
+ int sk_dgram[9];
+ socklen_t len;
+ int sk_st[5];
+ DIR *dir;
+
+ test_init(argc, argv);
+
+ /*
+ * All sockets are under dir to not clash
+ * with other tests.
+ */
+ if (mkdir(dirname, 0755) < 0) {
+ if (errno != EEXIST) {
+ pr_perror("Can't create %s", dirname);
+ return 1;
+ }
+ }
+
+ /*
+ * Subdir for dgram sockets.
+ */
+ ssprintf(subdir_dg, "%s/%s", dirname, "dg");
+ if (mkdir(subdir_dg, 0755) < 0) {
+ if (errno != EEXIST) {
+ pr_perror("Can't create %s", subdir_dg);
+ return 1;
+ }
+ }
+
+ /*
+ * Subdir for stream sockets.
+ */
+ ssprintf(subdir_st, "%s/%s", dirname, "st");
+ if (mkdir(subdir_st, 0755) < 0) {
+ if (errno != EEXIST) {
+ pr_perror("Can't create %s", subdir_st);
+ return 1;
+ }
+ }
+
+ /*
+ * DGRAM sockets
+ *
+ * - create 2 sockets
+ * - bind first to subdired
+ * - connect second to it
+ * - delete socket on fs
+ * - do the same for second pair with same name
+ * - delete socket on fs
+ * - create 3 more sockets
+ * - bind /connect to same name, where one is deleted
+ */
+
+ ssprintf(filename, "%s/%s", subdir_dg, "sk-dt");
+ if (fill_sock_name(&addr, filename) < 0) {
+ pr_err("%s is too long for socket\n", filename);
+ return 1;
+ }
+ unlink(addr.sun_path);
+
+ sk_dgram[0] = sk_alloc_bind(SOCK_DGRAM, &addr);
+ if (sk_dgram[0] < 0)
+ return 1;
+ test_msg("sk-dt: alloc/bind %d %s\n", sk_dgram[0], addr.sun_path);
+
+ sk_dgram[1] = sk_alloc_connect(SOCK_DGRAM, &addr);
+ if (sk_dgram[1] < 0)
+ return 1;
+ unlink(addr.sun_path);
+ test_msg("sk-dt: alloc/connect/unlink %d %s\n", sk_dgram[1], addr.sun_path);
+
+ sk_dgram[2] = sk_alloc_bind(SOCK_DGRAM, &addr);
+ if (sk_dgram[2] < 0)
+ return 1;
+ test_msg("sk-dt: alloc/bind %d %s\n", sk_dgram[2], addr.sun_path);
+
+ sk_dgram[3] = sk_alloc_connect(SOCK_DGRAM, &addr);
+ if (sk_dgram[3] < 0)
+ return 1;
+ unlink(addr.sun_path);
+ test_msg("sk-dt: alloc/connect/unlink %d %s\n", sk_dgram[3], addr.sun_path);
+
+ ssprintf(filename, "%s/%s", dirname, "sole");
+ if (fill_sock_name(&addr, filename) < 0) {
+ pr_err("%s is too long for socket\n", filename);
+ return 1;
+ }
+ unlink(addr.sun_path);
+
+ sk_dgram[4] = sk_alloc_bind(SOCK_DGRAM, &addr);
+ if (sk_dgram[4] < 0)
+ return 1;
+ test_msg("sk-dt: alloc/bind %d %s\n", sk_dgram[4], addr.sun_path);
+
+ sk_dgram[5] = sk_alloc_connect(SOCK_DGRAM, &addr);
+ if (sk_dgram[5] < 0)
+ return 1;
+ unlink(addr.sun_path);
+ test_msg("sk-dt: alloc/connect/unlink %d %s\n", sk_dgram[5], addr.sun_path);
+
+ sk_dgram[6] = sk_alloc_bind(SOCK_DGRAM, &addr);
+ if (sk_dgram[6] < 0)
+ return 1;
+ test_msg("sk-dt: alloc/bind %d %s\n", sk_dgram[6], addr.sun_path);
+
+ sk_dgram[7] = sk_alloc_connect(SOCK_DGRAM, &addr);
+ if (sk_dgram[7] < 0)
+ return 1;
+ unlink(addr.sun_path);
+ test_msg("sk-dt: alloc/connect/unlink %d %s\n", sk_dgram[7], addr.sun_path);
+
+ sk_dgram[8] = sk_alloc_bind(SOCK_DGRAM, &addr);
+ if (sk_dgram[8] < 0)
+ return 1;
+ test_msg("sk-dt: alloc/bind %d %s\n", sk_dgram[8], addr.sun_path);
+
+ if (dup2(sk_dgram[4], 110) < 0 || dup2(sk_dgram[6], 100) < 0) {
+ pr_perror("Can't move socket");
+ return 1;
+ }
+ close(sk_dgram[4]);
+ sk_dgram[4] = 110;
+ close(sk_dgram[6]);
+ sk_dgram[6] = 100;
+
+ /*
+ * DGRAM paired sockets. Just bind both to the same name.
+ */
+ if (socketpair(PF_UNIX, SOCK_DGRAM, 0, sk_dgram_pair)) {
+ pr_perror("Can't create dgram pair");
+ return 1;
+ }
+ test_msg("sk-dgp: sockpair %d %d\n",
+ sk_dgram_pair[0], sk_dgram_pair[1]);
+ ssprintf(filename, "%s/%s", subdir_dg, "sk-dtp");
+
+ if (fill_sock_name(&addr, filename) < 0) {
+ pr_err("%s is too long for socket\n", filename);
+ return 1;
+ }
+
+ if (bind(sk_dgram_pair[0], (const struct sockaddr *)&addr, sizeof(addr))) {
+ pr_perror("bind %d to %s", sk_dgram_pair[0], addr.sun_path);
+ return -1;
+ }
+ unlink(addr.sun_path);
+ if (bind(sk_dgram_pair[1], (const struct sockaddr *)&addr, sizeof(addr))) {
+ pr_perror("bind %d to %s", sk_dgram_pair[1], addr.sun_path);
+ return -1;
+ }
+ unlink(addr.sun_path);
+
+ /*
+ * Drop subdirectory.
+ */
+ rmdir(subdir_dg);
+
+ /*
+ * STREAM sockets
+ *
+ * - create server, bind to subdired
+ * - create client
+ * - connect to server
+ * - delete socket on fs
+ * - bind again to subdired
+ * - connect to server
+ * - delete socket on fs
+ */
+ ssprintf(filename, "%s/%s", subdir_st, "sk-st");
+ if (fill_sock_name(&addr, filename) < 0) {
+ pr_err("%s is too long for socket\n", filename);
+ return 1;
+ }
+ unlink(addr.sun_path);
+
+ sk_st[0] = sk_alloc_bind(SOCK_STREAM, &addr);
+ if (sk_st[0] < 0)
+ return 1;
+ test_msg("sk-st: alloc/bind/listen %d\n", sk_st[0]);
+
+ if (listen(sk_st[0], 16)) {
+ pr_perror("Can't listen on socket");
+ return 1;
+ }
+
+ sk_st[1] = sk_alloc_connect(SOCK_STREAM, &addr);
+ if (sk_st[1] < 0)
+ return 1;
+ test_msg("sk-st: alloc/connect %d\n", sk_st[1]);
+
+ len = sizeof(addr_from);
+ sk_st[2] = accept(sk_st[0], (struct sockaddr *)&addr_from, &len);
+ if (sk_st[2] < 0) {
+ pr_perror("Can't accept on socket");
+ return 1;
+ }
+ test_msg("sk-st: accept %d\n", sk_st[2]);
+
+ sk_st[3] = sk_alloc_connect(SOCK_STREAM, &addr);
+ if (sk_st[3] < 0)
+ return 1;
+ test_msg("sk-st: alloc/connect %d\n", sk_st[3]);
+
+ len = sizeof(addr_from);
+ sk_st[4] = accept(sk_st[0], (struct sockaddr *)&addr_from, &len);
+ if (sk_st[4] < 0) {
+ pr_perror("Can't accept on socket");
+ return 1;
+ }
+ test_msg("sk-st: accept %d\n", sk_st[4]);
+
+ unlink(addr.sun_path);
+
+ /*
+ * Drop subdirectory.
+ */
+ rmdir(subdir_st);
+
+ test_daemon();
+ test_waitsig();
+
+ if (write(sk_dgram[1], &c1, 1) != 1 ||
+ read(sk_dgram[0], &c2, 1) != 1 ||
+ write(sk_dgram[3], &c3, 1) != 1 ||
+ read(sk_dgram[2], &c4, 1) != 1) {
+ fail("Unable to send/receive a message on dgram");
+ return 1;
+ }
+
+ if (c1 != c2 || c3 != c4) {
+ fail("Vals mismatch on dgram: c1 %d c2 %d c3 %d c4 %d",
+ c1, c2, c3, c4);
+ return 1;
+ }
+
+ if (write(sk_dgram_pair[1], &c9, 1) != 1 ||
+ read(sk_dgram_pair[0], &c10, 1) != 1) {
+ fail("Unable to send/receive a message on paired dgram");
+ return 1;
+ }
+
+ if (c9 != c10) {
+ fail("Vals mismatch on dgram: c9 %d c10 %d",
+ c9, c10);
+ return 1;
+ }
+
+ if (write(sk_st[2], &c5, 1) != 1 ||
+ read(sk_st[1], &c6, 1) != 1 ||
+ write(sk_st[4], &c7, 1) != 1 ||
+ read(sk_st[3], &c8, 1) != 1) {
+ fail("Unable to send/receive a message on stream");
+ return 1;
+ }
+
+ if (c5 != c6 || c7 != c8) {
+ fail("Vals mismatch on stream: c5 %d c6 %d c7 %d c8 %d",
+ c5, c6, c7, c8);
+ return 1;
+ }
+
+ dir = opendir(subdir_dg);
+ if (dir != NULL || errno != ENOENT) {
+ fail("Directory %s is not deteled", subdir_dg);
+ return 1;
+ }
+
+ dir = opendir(subdir_st);
+ if (dir != NULL || errno != ENOENT) {
+ fail("Directory %s is not deteled", subdir_st);
+ return 1;
+ }
+
+ pass();
+ return 0;
+}
diff --git a/test/zdtm/static/sk-unix01.desc b/test/zdtm/static/sk-unix01.desc
new file mode 100644
index 000000000000..2651c4d7789b
--- /dev/null
+++ b/test/zdtm/static/sk-unix01.desc
@@ -0,0 +1 @@
+{'flavor': 'h ns uns', 'flags': 'suid'}
--
2.14.4
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