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#include <sched.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdbool.h>
#include <linux/if.h>
#include <sys/ioctl.h>
#include <netinet/ether.h>
#include <netlink/netlink.h>
#include <netlink/route/link.h>
#include "zdtmtst.h"
const char *test_doc = "Check dump and restore a few network namespaces";
#ifndef NSIO
#define NSIO 0xb7
#define NS_GET_USERNS _IO(NSIO, 0x1)
#define NS_GET_PARENT _IO(NSIO, 0x2)
#endif
int main(int argc, char **argv)
{
task_waiter_t lock;
pid_t pid[2];
int status = -1, ret, i;
struct rtnl_link *link = NULL, *new;
struct nl_sock *sk;
int has_index = 1;
test_init(argc, argv);
task_waiter_init(&lock);
for (i = 0; i < 2; i++) {
pid[i] = fork();
if (pid[i] < 0) {
pr_perror("fork");
return -1;
}
if (pid[i] == 0) {
if (unshare(CLONE_NEWNET))
return 1;
task_waiter_complete(&lock, i);
test_waitsig();
return 0;
}
task_waiter_wait4(&lock, i);
}
sk = nl_socket_alloc();
if (sk == NULL)
return -1;
ret = nl_connect(sk, NETLINK_ROUTE);
if (ret < 0) {
nl_socket_free(sk);
pr_err("Unable to connect socket: %s", nl_geterror(ret));
return -1;
}
if (system("ip link add name zdtmbr type bridge"))
return -1;
for (i = 0; i < 2; i++) {
char cmd[4096];
snprintf(cmd, sizeof(cmd), "ip link add name zdtm%d index %d netns %d type veth peer name zdtm%d index %d",
i, i * 10 + 12, pid[i], i, i * 10 + 12);
if (system(cmd)) {
has_index = 0;
snprintf(cmd, sizeof(cmd), "ip link add name zdtm%d netns %d type veth peer name zdtm%d", i, pid[i], i);
if (system(cmd))
return 1;
}
snprintf(cmd, sizeof(cmd), "ip link set dev zdtm%d master zdtmbr", i);
if (system(cmd))
return 1;
}
test_daemon();
test_waitsig();
for (i = 0; i < 2; i++) {
link = rtnl_link_alloc();
new = rtnl_link_alloc();
if (has_index)
rtnl_link_set_ifindex(link, i * 10 + 12);
else {
char name[43];
snprintf(name, sizeof(name), "zdtm%d", i);
rtnl_link_set_name(link, name);
rtnl_link_set_name(new, name);
}
rtnl_link_set_flags(new, IFF_UP);
ret = rtnl_link_change(sk, link, new, 0);
if (ret) {
fail("Unable to up the link: %s", nl_geterror(ret));
return 1;
}
}
for (i = 0; i < 2; i++) {
kill(pid[i], SIGTERM);
waitpid(pid[i], &status, 0);
if (status) {
fail();
return 1;
}
}
pass();
return 0;
}
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