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https://github.com/checkpoint-restore/criu.git
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d9a785adbb
Check, that fdstore-keeped user ns files are opened correct after restore. Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
82 lines
1.5 KiB
C
82 lines
1.5 KiB
C
#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <string.h>
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#include <utime.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "zdtmtst.h"
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const char *test_doc = "Check for /proc/self/ns path restore";
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const char *test_author = "Cyrill Gorcunov <gorcunov@openvz.org>";
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#ifdef PROC_SELF01
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const char nspath[] = "/proc/self/ns/user";
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#else
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const char nspath[] = "/proc/self/ns/net";
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#endif
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int read_fd_link(int lfd, char *buf, size_t size)
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{
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ssize_t ret;
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char t[32];
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snprintf(t, sizeof(t), "/proc/self/fd/%d", lfd);
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ret = readlink(t, buf, size - 1);
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if (ret < 0) {
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pr_perror("Can't read link of fd %d", lfd);
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return -1;
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}
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buf[ret] = 0;
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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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char path_orig[64], path_new[64];
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int fd_self, fd_new;
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test_init(argc, argv);
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memset(path_orig, 0, sizeof(path_orig));
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memset(path_new, 0, sizeof(path_new));
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fd_self = open(nspath, O_RDONLY);
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if (fd_self < 0) {
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pr_perror("Can't open %s", nspath);
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return -1;
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}
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test_daemon();
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test_waitsig();
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if (read_fd_link(fd_self, path_orig, sizeof(path_orig))) {
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pr_perror("Can't fill original path");
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return -1;
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}
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fd_new = open(nspath, O_RDONLY);
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if (fd_new < 0) {
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pr_perror("Can't open %s", nspath);
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return -1;
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}
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if (read_fd_link(fd_new, path_new, sizeof(path_new))) {
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pr_perror("Can't fill new path");
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return -1;
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}
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if (memcmp(path_orig, path_new, sizeof(path_orig))) {
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fail("Paths mismatch %s %s\n", path_orig, path_new);
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return -1;
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}
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pass();
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return 0;
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}
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