src/tests/startone.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 <string.h>
  28 #include <errno.h>
  29 #include <fcntl.h>
  30
  31 #define MYNAME "lxctest1"
  32
  33 static int destroy_container(void)
  34 {
  35         int status, ret;
  36         pid_t pid = fork();
  37
  38         if (pid < 0) {
  39                 perror("fork");
  40                 return -1;
  41         }
  42
  43         if (pid == 0) {
  44                 execlp("lxc-destroy", "lxc-destroy", "-f", "-n", MYNAME, NULL);
  45                 exit(EXIT_FAILURE);
  46         }
  47
  48 again:
  49         ret = waitpid(pid, &status, 0);
  50         if (ret == -1) {
  51                 if (errno == EINTR)
  52                         goto again;
  53
  54                 perror("waitpid");
  55                 return -1;
  56         }
  57
  58         if (ret != pid)
  59                 goto again;
  60
  61         if (!WIFEXITED(status))  { // did not exit normally
  62                 fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__);
  63                 return -1;
  64         }
  65
  66         return WEXITSTATUS(status);
  67 }
  68
  69 static int create_container(void)
  70 {
  71         int status, ret;
  72         pid_t pid = fork();
  73
  74         if (pid < 0) {
  75                 perror("fork");
  76                 return -1;
  77         }
  78
  79         if (pid == 0) {
  80                 execlp("lxc-create", "lxc-create", "-t", "busybox", "-n", MYNAME, NULL);
  81                 exit(EXIT_FAILURE);
  82         }
  83
  84 again:
  85         ret = waitpid(pid, &status, 0);
  86         if (ret == -1) {
  87                 if (errno == EINTR)
  88                         goto again;
  89
  90                 perror("waitpid");
  91                 return -1;
  92         }
  93
  94         if (ret != pid)
  95                 goto again;
  96
  97         if (!WIFEXITED(status))  { // did not exit normally
  98                 fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__);
  99                 return -1;
 100         }
 101
 102         return WEXITSTATUS(status);
 103 }
 104
 105 int main(int argc, char *argv[])
 106 {
 107         struct lxc_container *c;
 108         int ret = 0;
 109         const char *s;
 110         bool b;
 111         char buf[201];
 112         int len;
 113
 114         ret = 1;
 115
 116         /* test a real container */
 117         c = lxc_container_new(MYNAME, NULL);
 118         if (!c) {
 119                 fprintf(stderr, "%d: error creating lxc_container %s\n", __LINE__, MYNAME);
 120                 ret = 1;
 121                 goto out;
 122         }
 123
 124         if (c->is_defined(c)) {
 125                 fprintf(stderr, "%d: %s thought it was defined\n", __LINE__, MYNAME);
 126                 goto out;
 127         }
 128
 129         ret = create_container();
 130         if (ret) {
 131                 fprintf(stderr, "%d: failed to create a container\n", __LINE__);
 132                 goto out;
 133         }
 134
 135         b = c->is_defined(c);
 136         if (!b) {
 137                 fprintf(stderr, "%d: %s thought it was not defined\n", __LINE__, MYNAME);
 138                 goto out;
 139         }
 140
 141         len = c->get_cgroup_item(c, "cpuset.cpus", buf, 200);
 142         if (len >= 0) {
 143                 fprintf(stderr, "%d: %s not running but had cgroup settings\n", __LINE__, MYNAME);
 144                 goto out;
 145         }
 146
 147         sprintf(buf, "0");
 148         b = c->set_cgroup_item(c, "cpuset.cpus", buf);
 149         if (b) {
 150                 fprintf(stderr, "%d: %s not running but could set cgroup settings\n", __LINE__, MYNAME);
 151                 goto out;
 152         }
 153
 154         s = c->state(c);
 155         if (!s || strcmp(s, "STOPPED")) {
 156                 fprintf(stderr, "%d: %s is in state %s, not in STOPPED.\n", __LINE__, c->name, s ? s : "undefined");
 157                 goto out;
 158         }
 159
 160         b = c->load_config(c, NULL);
 161         if (!b) {
 162                 fprintf(stderr, "%d: %s failed to read its config\n", __LINE__, c->name);
 163                 goto out;
 164         }
 165
 166         if (!c->set_config_item(c, "lxc.uts.name", "bobo")) {
 167                 fprintf(stderr, "%d: failed setting lxc.uts.name\n", __LINE__);
 168                 goto out;
 169         }
 170
 171         if (!lxc_container_get(c)) {
 172                 fprintf(stderr, "%d: failed to get extra ref to container\n", __LINE__);
 173                 exit(1);
 174         }
 175
 176         c->want_daemonize(c, true);
 177         if (!c->startl(c, 0, NULL)) {
 178                 fprintf(stderr, "%d: %s failed to start\n", __LINE__, c->name);
 179                 exit(1);
 180         }
 181
 182         sleep(3);
 183
 184         s = c->state(c);
 185         if (!s || strcmp(s, "RUNNING")) {
 186                 fprintf(stderr, "%d: %s is in state %s, not in RUNNING.\n", __LINE__, c->name, s ? s : "undefined");
 187                 goto out;
 188         }
 189
 190         len = c->get_cgroup_item(c, "cpuset.cpus", buf, 0);
 191         if (len <= 0) {
 192                 fprintf(stderr, "%d: not able to get length of cpuset.cpus (ret %d)\n", __LINE__, len);
 193                 goto out;
 194         }
 195
 196         len = c->get_cgroup_item(c, "cpuset.cpus", buf, 200);
 197         if (len <= 0 || strncmp(buf, "0", 1)) {
 198                 fprintf(stderr, "%d: not able to get cpuset.cpus (len %d buf %s)\n", __LINE__, len, buf);
 199                 goto out;
 200         }
 201
 202         sprintf(buf, "FROZEN");
 203         b = c->set_cgroup_item(c, "freezer.state", buf);
 204         if (!b) {
 205                 fprintf(stderr, "%d: not able to set freezer.state.\n", __LINE__);
 206                 goto out;
 207         }
 208
 209         sprintf(buf, "XXX");
 210         len = c->get_cgroup_item(c, "freezer.state", buf, 200);
 211         if (len <= 0 || (strcmp(buf, "FREEZING\n") && strcmp(buf, "FROZEN\n"))) {
 212                 fprintf(stderr, "%d: not able to get freezer.state (len %d buf %s)\n", __LINE__, len, buf);
 213                 goto out;
 214         }
 215
 216         c->set_cgroup_item(c, "freezer.state", "THAWED");
 217
 218         c->stop(c);
 219
 220     /* feh - multilib has moved the lxc-init crap */
 221 #if 0
 222     goto ok;
 223
 224         ret = system("mkdir -p " LXCPATH "/lxctest1/rootfs//usr/local/libexec/lxc");
 225         if (!ret)
 226                 ret = system("mkdir -p " LXCPATH "/lxctest1/rootfs/usr/lib/lxc/");
 227         if (!ret)
 228                 ret = system("cp src/lxc/lxc-init " LXCPATH "/lxctest1/rootfs//usr/local/libexec/lxc");
 229         if (!ret)
 230                 ret = system("cp src/lxc/liblxc.so " LXCPATH "/lxctest1/rootfs/usr/lib/lxc");
 231         if (!ret)
 232                 ret = system("cp src/lxc/liblxc.so " LXCPATH "/lxctest1/rootfs/usr/lib/lxc/liblxc.so.0");
 233         if (!ret)
 234                 ret = system("cp src/lxc/liblxc.so " LXCPATH "/lxctest1/rootfs/usr/lib");
 235         if (!ret)
 236                 ret = system("mkdir -p " LXCPATH "/lxctest1/rootfs/dev/shm");
 237         if (!ret)
 238                 ret = system("chroot " LXCPATH "/lxctest1/rootfs apt-get install --no-install-recommends lxc");
 239         if (ret) {
 240                 fprintf(stderr, "%d: failed to installing lxc-init in container\n", __LINE__);
 241                 goto out;
 242         }
 243         // next write out the config file;  does it match?
 244         if (!c->startl(c, 1, "/bin/hostname", NULL)) {
 245                 fprintf(stderr, "%d: failed to lxc-execute /bin/hostname\n", __LINE__);
 246                 goto out;
 247         }
 248         //  auto-check result?  ('bobo' is printed on stdout)
 249
 250 ok:
 251 #endif
 252         fprintf(stderr, "all lxc_container tests passed for %s\n", c->name);
 253         ret = 0;
 254
 255 out:
 256         if (c) {
 257                 c->stop(c);
 258                 destroy_container();
 259         }
 260         lxc_container_put(c);
 261         exit(ret);
 262 }