mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-08-04 15:53:44 +00:00
93dd984ca0
Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Adrian Reber <areber@redhat.com>
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <linux/limits.h>
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#include <signal.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include "zdtmtst.h"
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const char *test_doc = "check that empty bridges are c/r'd correctly";
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const char *test_author = "Tycho Andersen <tycho.andersen@canonical.com>";
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#define BRIDGE_NAME "zdtmbr0"
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int add_bridge(void)
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{
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if (system("ip link add " BRIDGE_NAME " type bridge"))
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return -1;
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if (system("ip addr add 10.0.55.55/32 dev " BRIDGE_NAME))
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return -1;
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/* use a link local address so we can test scope_id change */
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if (system("ip addr add fe80:4567::1/64 nodad dev " BRIDGE_NAME))
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return -1;
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if (system("ip link set " BRIDGE_NAME " up"))
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return -1;
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return 0;
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}
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int del_bridge(void)
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{
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/* don't check for errors, let's try to make sure it's deleted */
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system("ip link set " BRIDGE_NAME " down");
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if (system("ip link del " BRIDGE_NAME))
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return -1;
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return 0;
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}
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int main(int argc, char **argv)
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{
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int ret = 1;
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struct sockaddr_in6 addr;
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int sk;
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test_init(argc, argv);
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if (add_bridge() < 0)
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return 1;
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sk = socket(AF_INET6, SOCK_DGRAM, 0);
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if (sk < 0) {
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fail("can't get socket");
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goto out;
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}
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memset(&addr, 0, sizeof(addr));
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addr.sin6_port = htons(0);
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addr.sin6_family = AF_INET6;
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if (inet_pton(AF_INET6, "fe80:4567::1", &addr.sin6_addr) < 0) {
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fail("can't convert inet6 addr");
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goto out;
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}
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addr.sin6_scope_id = if_nametoindex(BRIDGE_NAME);
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if (bind(sk, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
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fail("can't bind");
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goto out;
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}
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/* Here, we grep for inet because some of the IPV6 DAD stuff can be
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* racy, and all we really care about is that the bridge got restored
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* with the right MAC, since we know DAD will succeed eventually.
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*
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* (I got this race with zdtm.py, but not with zdtm.sh; not quite sure
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* what the environment difference is/was.)
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*/
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if (system("ip addr list dev " BRIDGE_NAME " | grep inet | sort > bridge.dump.test")) {
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pr_perror("can't save net config");
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fail("Can't save net config");
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goto out;
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}
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test_daemon();
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test_waitsig();
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if (system("ip addr list dev " BRIDGE_NAME " | grep inet | sort > bridge.rst.test")) {
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fail("Can't get net config");
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goto out;
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}
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if (system("diff bridge.rst.test bridge.dump.test")) {
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fail("Net config differs after restore");
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goto out;
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}
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pass();
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ret = 0;
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out:
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del_bridge();
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return ret;
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}
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