mirror of
https://github.com/checkpoint-restore/criu.git
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2e13f1f029
Move static and transition into zdtm top. We can't move all the micro tests themselves, as we need to distinguish static from non static (zdtm.py makes additional checks on static ones). Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
115 lines
2.1 KiB
C
115 lines
2.1 KiB
C
#include <unistd.h>
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#include <stdio.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/mount.h>
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#include "zdtmtst.h"
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const char *test_doc = "Check that empty cgroups are preserved";
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const char *test_author = "Tycho Andersen <tycho.andersen@canonical.com>";
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char *dirname;
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TEST_OPTION(dirname, string, "cgroup directory name", 1);
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static const char *cgname = "zdtmtst";
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static const char *subname = "subcg01";
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static const char *empty = "empty";
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int main(int argc, char **argv)
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{
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int cgfd, l, ret = 1, i;
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char aux[1024], paux[1024];
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FILE *cgf;
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struct stat st;
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test_init(argc, argv);
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if (mkdir(dirname, 0700) < 0) {
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pr_perror("Can't make dir");
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goto out;
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}
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sprintf(aux, "none,name=%s", cgname);
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if (mount("none", dirname, "cgroup", 0, aux)) {
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pr_perror("Can't mount cgroups");
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goto out_rd;
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}
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sprintf(paux, "%s/%s", dirname, subname);
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mkdir(paux, 0600);
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l = sprintf(aux, "%d", getpid());
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sprintf(paux, "%s/%s/tasks", dirname, subname);
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cgfd = open(paux, O_WRONLY);
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if (cgfd < 0) {
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pr_perror("Can't open tasks");
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goto out_rs;
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}
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l = write(cgfd, aux, l);
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close(cgfd);
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if (l < 0) {
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pr_perror("Can't move self to subcg");
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goto out_rs;
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}
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for (i = 0; i < 2; i++) {
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sprintf(paux, "%s/%s/%s.%d", dirname, subname, empty, i);
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if (mkdir(paux, 0600)) {
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pr_perror("mkdir %s", paux);
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goto out_rs;
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}
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}
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test_daemon();
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test_waitsig();
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cgf = fopen("/proc/self/mountinfo", "r");
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if (cgf == NULL) {
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fail("No mountinfo file");
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goto out_rs;
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}
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while (fgets(paux, sizeof(paux), cgf)) {
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char *s;
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s = strstr(paux, cgname);
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if (!s)
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continue;
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sscanf(paux, "%*d %*d %*d:%*d %*s %s", aux);
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test_msg("found cgroup at %s\n", aux);
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for (i = 0; i < 2; i++) {
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sprintf(paux, "%s/%s/%s.%d", aux, subname, empty, i);
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if (stat(paux, &st)) {
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fail("couldn't stat %s\n", paux);
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ret = -1;
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goto out_close;
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}
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if (!S_ISDIR(st.st_mode)) {
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fail("%s is not a directory\n", paux);
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ret = -1;
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goto out_close;
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}
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}
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pass();
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ret = 0;
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goto out_close;
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}
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fail("empty cgroup not found!\n");
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out_close:
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fclose(cgf);
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out_rs:
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umount(dirname);
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out_rd:
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rmdir(dirname);
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out:
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return ret;
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}
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