src/tests/clonetest.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 #include <lxc/lxccontainer.h>
  20
  21 #include <unistd.h>
  22 #include <signal.h>
  23 #include <stdio.h>
  24 #include <sys/types.h>
  25 #include <sys/wait.h>
  26 #include <stdlib.h>
  27 #include <errno.h>
  28
  29 #define MYNAME "clonetest1"
  30 #define MYNAME2 "clonetest2"
  31
  32 int main(int argc, char *argv[])
  33 {
  34         struct lxc_container *c = NULL, *c2 = NULL, *c3 = NULL;
  35         int ret = 1;
  36
  37         c = lxc_container_new(MYNAME, NULL);
  38         c2 = lxc_container_new(MYNAME2, NULL);
  39         if (c) {
  40                 c->destroy(c);
  41                 lxc_container_put(c);
  42                 c = NULL;
  43         }
  44
  45         if (c2) {
  46                 c2->destroy(c2);
  47                 lxc_container_put(c2);
  48                 c2 = NULL;
  49         }
  50
  51         if ((c = lxc_container_new(MYNAME, NULL)) == NULL) {
  52                 fprintf(stderr, "%d: error opening lxc_container %s\n", __LINE__, MYNAME);
  53                 ret = 1;
  54                 goto out;
  55         }
  56
  57         c->save_config(c, NULL);
  58
  59         if (!c->createl(c, "busybox", NULL, NULL, 0, NULL)) {
  60                 fprintf(stderr, "%d: failed to create a container\n", __LINE__);
  61                 goto out;
  62         }
  63
  64         c->load_config(c, NULL);
  65
  66         if (!c->is_defined(c)) {
  67                 fprintf(stderr, "%d: %s thought it was not defined\n", __LINE__, MYNAME);
  68                 goto out;
  69         }
  70
  71         c2 = c->clone(c, MYNAME2, NULL, 0, NULL, NULL, 0, NULL);
  72         if (!c2) {
  73                 fprintf(stderr, "%d: %s clone returned NULL\n", __LINE__, MYNAME2);
  74                 goto out;
  75         }
  76
  77         if (!c2->is_defined(c2)) {
  78                 fprintf(stderr, "%d: %s not defined after clone\n", __LINE__, MYNAME2);
  79                 goto out;
  80         }
  81
  82         fprintf(stderr, "directory backing store tests passed\n");
  83
  84         // now test with lvm
  85         // Only do this if clonetestlvm1 exists - user has to set this up
  86         // in advance
  87         c2->destroy(c2);
  88         lxc_container_put(c2);
  89         c->destroy(c);
  90         lxc_container_put(c);
  91         c = NULL;
  92
  93         c2 = lxc_container_new("clonetestlvm2", NULL);
  94         if (c2) {
  95                 if (c2->is_defined(c2))
  96                         c2->destroy(c2);
  97                 lxc_container_put(c2);
  98         }
  99
 100         c2 = lxc_container_new("clonetest-o1", NULL);
 101         if (c2) {
 102                 if (c2->is_defined(c2))
 103                         c2->destroy(c2);
 104                 lxc_container_put(c2);
 105         }
 106
 107         c2 = lxc_container_new("clonetest-o2", NULL);
 108         if (c2) {
 109                 if (c2->is_defined(c2))
 110                         c2->destroy(c2);
 111                 lxc_container_put(c2);
 112         }
 113         c2 = NULL;
 114
 115         // lvm-copied
 116         c = lxc_container_new("clonetestlvm1", NULL);
 117         if (!c) {
 118                 fprintf(stderr, "failed loading clonetestlvm1\n");
 119                 goto out;
 120         }
 121
 122         if (!c->is_defined(c)) {
 123                 fprintf(stderr, "clonetestlvm1 does not exist, skipping lvm tests\n");
 124                 ret = 0;
 125                 goto out;
 126         }
 127
 128         if ((c2 = c->clone(c, "clonetestlvm2", NULL, 0, NULL, NULL, 0, NULL)) == NULL) {
 129                 fprintf(stderr, "lvm clone failed\n");
 130                 goto out;
 131         }
 132
 133         lxc_container_put(c2);
 134
 135         // lvm-snapshot
 136         c2 = lxc_container_new("clonetestlvm3", NULL);
 137         if (c2) {
 138                 if (c2->is_defined(c2))
 139                         c2->destroy(c2);
 140                 lxc_container_put(c2);
 141                 c2 = NULL;
 142         }
 143
 144         if ((c2 = c->clone(c, "clonetestlvm3", NULL, LXC_CLONE_SNAPSHOT, NULL, NULL, 0, NULL)) == NULL) {
 145                 fprintf(stderr, "lvm clone failed\n");
 146                 goto out;
 147         }
 148
 149         lxc_container_put(c2);
 150         lxc_container_put(c);
 151         c = c2 = NULL;
 152
 153         if ((c = lxc_container_new(MYNAME, NULL)) == NULL) {
 154                 fprintf(stderr, "error opening original container for overlay test\n");
 155                 goto out;
 156         }
 157
 158         // Now create an overlayfs clone of a dir-backed container
 159         if ((c2 = c->clone(c, "clonetest-o1", NULL, LXC_CLONE_SNAPSHOT, "overlayfs", NULL, 0, NULL)) == NULL) {
 160                 fprintf(stderr, "overlayfs clone of dir failed\n");
 161                 goto out;
 162         }
 163
 164         // Now create an overlayfs clone of the overlayfs clone
 165         if ((c3 = c2->clone(c2, "clonetest-o2", NULL, LXC_CLONE_SNAPSHOT, "overlayfs", NULL, 0, NULL)) == NULL) {
 166                 fprintf(stderr, "overlayfs clone of overlayfs failed\n");
 167                 goto out;
 168         }
 169
 170         fprintf(stderr, "all clone tests passed for %s\n", c->name);
 171         ret = 0;
 172
 173 out:
 174         if (c3) {
 175                 lxc_container_put(c3);
 176         }
 177
 178         if (c2) {
 179                 c2->destroy(c2);
 180                 lxc_container_put(c2);
 181         }
 182
 183         if (c) {
 184                 c->destroy(c);
 185                 lxc_container_put(c);
 186         }
 187
 188         exit(ret);
 189 }