src/tests/saveconfig.c

   1 /* liblxcapi
   2  *
   3  * Copyright © 2012 Serge Hallyn <serge.hallyn@ubuntu.com>.
   4  * Copyright © 2012 Canonical Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <lxc/lxccontainer.h>
  23
  24 #include <unistd.h>
  25 #include <signal.h>
  26 #include <stdio.h>
  27 #include <sys/types.h>
  28 #include <sys/wait.h>
  29 #include <stdlib.h>
  30 #include <errno.h>
  31
  32 #define MYNAME "lxctest1"
  33
  34 static int create_container(void)
  35 {
  36         int status, ret;
  37         pid_t pid = fork();
  38
  39         if (pid < 0) {
  40                 perror("fork");
  41                 return -1;
  42         }
  43
  44         if (pid == 0) {
  45                 execlp("lxc-create", "lxc-create", "-t", "busybox", "-n", MYNAME, NULL);
  46                 exit(EXIT_FAILURE);
  47         }
  48
  49 again:
  50         ret = waitpid(pid, &status, 0);
  51         if (ret == -1) {
  52                 if (errno == EINTR)
  53                         goto again;
  54
  55                 perror("waitpid");
  56                 return -1;
  57         }
  58
  59         if (ret != pid)
  60                 goto again;
  61
  62         if (!WIFEXITED(status))  { // did not exit normally
  63                 fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__);
  64                 return -1;
  65         }
  66
  67         return WEXITSTATUS(status);
  68 }
  69
  70 int main(int argc, char *argv[])
  71 {
  72         struct lxc_container *c;
  73         int ret = 1;
  74
  75         if ((c = lxc_container_new(MYNAME, NULL)) == NULL) {
  76                 fprintf(stderr, "%d: error opening lxc_container %s\n", __LINE__, MYNAME);
  77                 ret = 1;
  78                 goto out;
  79         }
  80
  81         if (c->is_defined(c)) {
  82                 fprintf(stderr, "%d: %s thought it was defined\n", __LINE__, MYNAME);
  83                 goto out;
  84         }
  85
  86         if (create_container()) {
  87                 fprintf(stderr, "%d: failed to create a container\n", __LINE__);
  88                 goto out;
  89         }
  90
  91         if (!c->is_defined(c)) {
  92                 fprintf(stderr, "%d: %s thought it was not defined\n", __LINE__, MYNAME);
  93                 goto out;
  94         }
  95
  96         c->load_config(c, NULL);
  97         unlink("/tmp/lxctest1");
  98         if (!c->save_config(c, "/tmp/lxctest1")) {
  99                 fprintf(stderr, "%d: failed writing config file /tmp/lxctest1\n", __LINE__);
 100                 goto out;
 101         }
 102
 103         rename(LXCPATH "/" MYNAME "/config", LXCPATH "/" MYNAME "/config.bak");
 104         if (!c->save_config(c, NULL)) {
 105                 fprintf(stderr, "%d: failed writing config file\n", __LINE__);
 106                 goto out;
 107         }
 108
 109         if (!c->destroy(c)) {
 110                 fprintf(stderr, "%d: error deleting %s\n", __LINE__, MYNAME);
 111                 goto out;
 112         }
 113
 114         if (c->is_defined(c)) {
 115                 fprintf(stderr, "%d: %s thought it was defined\n", __LINE__, MYNAME);
 116                 goto out;
 117         }
 118
 119         fprintf(stderr, "all lxc_container tests passed for %s\n", c->name);
 120         ret = 0;
 121
 122 out:
 123         lxc_container_put(c);
 124         exit(ret);
 125 }