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
  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 <string.h>
  31 #include <errno.h>
  32 #include <fcntl.h>
  33
  34 #define MYNAME "lxctest1"
  35
  36 static int destroy_container(void)
  37 {
  38         int status, ret;
  39         pid_t pid = fork();
  40
  41         if (pid < 0) {
  42                 perror("fork");
  43                 return -1;
  44         }
  45
  46         if (pid == 0) {
  47                 execlp("lxc-destroy", "lxc-destroy", "-f", "-n", MYNAME, NULL);
  48                 exit(EXIT_FAILURE);
  49         }
  50
  51 again:
  52         ret = waitpid(pid, &status, 0);
  53         if (ret == -1) {
  54                 if (errno == EINTR)
  55                         goto again;
  56
  57                 perror("waitpid");
  58                 return -1;
  59         }
  60
  61         if (ret != pid)
  62                 goto again;
  63
  64         if (!WIFEXITED(status))  { // did not exit normally
  65                 fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__);
  66                 return -1;
  67         }
  68
  69         return WEXITSTATUS(status);
  70 }
  71
  72 static int create_container(void)
  73 {
  74         int status, ret;
  75         pid_t pid = fork();
  76
  77         if (pid < 0) {
  78                 perror("fork");
  79                 return -1;
  80         }
  81
  82         if (pid == 0) {
  83                 execlp("lxc-create", "lxc-create", "-t", "busybox", "-n", MYNAME, NULL);
  84                 exit(EXIT_FAILURE);
  85         }
  86
  87 again:
  88         ret = waitpid(pid, &status, 0);
  89         if (ret == -1) {
  90                 if (errno == EINTR)
  91                         goto again;
  92
  93                 perror("waitpid");
  94                 return -1;
  95         }
  96
  97         if (ret != pid)
  98                 goto again;
  99
 100         if (!WIFEXITED(status))  { // did not exit normally
 101                 fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__);
 102                 return -1;
 103         }
 104
 105         return WEXITSTATUS(status);
 106 }
 107
 108 int main(int argc, char *argv[])
 109 {
 110         struct lxc_container *c;
 111         int ret = 0;
 112         const char *s;
 113         bool b;
 114         char buf[201];
 115         int len;
 116
 117         ret = 1;
 118
 119         /* test a real container */
 120         c = lxc_container_new(MYNAME, NULL);
 121         if (!c) {
 122                 fprintf(stderr, "%d: error creating lxc_container %s\n", __LINE__, MYNAME);
 123                 ret = 1;
 124                 goto out;
 125         }
 126
 127         if (c->is_defined(c)) {
 128                 fprintf(stderr, "%d: %s thought it was defined\n", __LINE__, MYNAME);
 129                 goto out;
 130         }
 131
 132         ret = create_container();
 133         if (ret) {
 134                 fprintf(stderr, "%d: failed to create a container\n", __LINE__);
 135                 goto out;
 136         }
 137
 138         b = c->is_defined(c);
 139         if (!b) {
 140                 fprintf(stderr, "%d: %s thought it was not defined\n", __LINE__, MYNAME);
 141                 goto out;
 142         }
 143
 144         len = c->get_cgroup_item(c, "cpuset.cpus", buf, 200);
 145         if (len >= 0) {
 146                 fprintf(stderr, "%d: %s not running but had cgroup settings\n", __LINE__, MYNAME);
 147                 goto out;
 148         }
 149
 150         sprintf(buf, "0");
 151         b = c->set_cgroup_item(c, "cpuset.cpus", buf);
 152         if (b) {
 153                 fprintf(stderr, "%d: %s not running but could set cgroup settings\n", __LINE__, MYNAME);
 154                 goto out;
 155         }
 156
 157         s = c->state(c);
 158         if (!s || strcmp(s, "STOPPED")) {
 159                 fprintf(stderr, "%d: %s is in state %s, not in STOPPED.\n", __LINE__, c->name, s ? s : "undefined");
 160                 goto out;
 161         }
 162
 163         b = c->load_config(c, NULL);
 164         if (!b) {
 165                 fprintf(stderr, "%d: %s failed to read its config\n", __LINE__, c->name);
 166                 goto out;
 167         }
 168
 169         if (!c->set_config_item(c, "lxc.uts.name", "bobo")) {
 170                 fprintf(stderr, "%d: failed setting lxc.uts.name\n", __LINE__);
 171                 goto out;
 172         }
 173
 174         if (!lxc_container_get(c)) {
 175                 fprintf(stderr, "%d: failed to get extra ref to container\n", __LINE__);
 176                 exit(EXIT_FAILURE);
 177         }
 178
 179         c->want_daemonize(c, true);
 180         if (!c->startl(c, 0, NULL)) {
 181                 fprintf(stderr, "%d: %s failed to start\n", __LINE__, c->name);
 182                 exit(EXIT_FAILURE);
 183         }
 184
 185         sleep(3);
 186
 187         s = c->state(c);
 188         if (!s || strcmp(s, "RUNNING")) {
 189                 fprintf(stderr, "%d: %s is in state %s, not in RUNNING.\n", __LINE__, c->name, s ? s : "undefined");
 190                 goto out;
 191         }
 192
 193         len = c->get_cgroup_item(c, "cpuset.cpus", buf, 0);
 194         if (len <= 0) {
 195                 fprintf(stderr, "%d: not able to get length of cpuset.cpus (ret %d)\n", __LINE__, len);
 196                 goto out;
 197         }
 198
 199         len = c->get_cgroup_item(c, "cpuset.cpus", buf, 200);
 200         if (len <= 0 || strncmp(buf, "0", 1)) {
 201                 fprintf(stderr, "%d: not able to get cpuset.cpus (len %d buf %s)\n", __LINE__, len, buf);
 202                 goto out;
 203         }
 204
 205         sprintf(buf, "FROZEN");
 206         b = c->set_cgroup_item(c, "freezer.state", buf);
 207         if (!b) {
 208                 fprintf(stderr, "%d: not able to set freezer.state.\n", __LINE__);
 209                 goto out;
 210         }
 211
 212         sprintf(buf, "XXX");
 213         len = c->get_cgroup_item(c, "freezer.state", buf, 200);
 214         if (len <= 0 || (strcmp(buf, "FREEZING\n") && strcmp(buf, "FROZEN\n"))) {
 215                 fprintf(stderr, "%d: not able to get freezer.state (len %d buf %s)\n", __LINE__, len, buf);
 216                 goto out;
 217         }
 218
 219         c->set_cgroup_item(c, "freezer.state", "THAWED");
 220
 221         c->stop(c);
 222
 223     /* feh - multilib has moved the lxc-init crap */
 224 #if 0
 225     goto ok;
 226
 227         ret = system("mkdir -p " LXCPATH "/lxctest1/rootfs//usr/local/libexec/lxc");
 228         if (!ret)
 229                 ret = system("mkdir -p " LXCPATH "/lxctest1/rootfs/usr/lib/lxc/");
 230         if (!ret)
 231                 ret = system("cp src/lxc/lxc-init " LXCPATH "/lxctest1/rootfs//usr/local/libexec/lxc");
 232         if (!ret)
 233                 ret = system("cp src/lxc/liblxc.so " LXCPATH "/lxctest1/rootfs/usr/lib/lxc");
 234         if (!ret)
 235                 ret = system("cp src/lxc/liblxc.so " LXCPATH "/lxctest1/rootfs/usr/lib/lxc/liblxc.so.0");
 236         if (!ret)
 237                 ret = system("cp src/lxc/liblxc.so " LXCPATH "/lxctest1/rootfs/usr/lib");
 238         if (!ret)
 239                 ret = system("mkdir -p " LXCPATH "/lxctest1/rootfs/dev/shm");
 240         if (!ret)
 241                 ret = system("chroot " LXCPATH "/lxctest1/rootfs apt-get install --no-install-recommends lxc");
 242         if (ret) {
 243                 fprintf(stderr, "%d: failed to installing lxc-init in container\n", __LINE__);
 244                 goto out;
 245         }
 246         // next write out the config file;  does it match?
 247         if (!c->startl(c, 1, "/bin/hostname", NULL)) {
 248                 fprintf(stderr, "%d: failed to lxc-execute /bin/hostname\n", __LINE__);
 249                 goto out;
 250         }
 251         //  auto-check result?  ('bobo' is printed on stdout)
 252
 253 ok:
 254 #endif
 255         fprintf(stderr, "all lxc_container tests passed for %s\n", c->name);
 256         ret = 0;
 257
 258 out:
 259         if (c) {
 260                 c->stop(c);
 261                 destroy_container();
 262         }
 263         lxc_container_put(c);
 264         exit(ret);
 265 }