src/tests/console_log.c

   1 /* liblxcapi
   2  *
   3  * Copyright © 2017 Christian Brauner <christian.brauner@ubuntu.com>.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20
  21 #include <errno.h>
  22 #include <fcntl.h>
  23 #include <inttypes.h>
  24 #include <signal.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <unistd.h>
  29 #include <sys/stat.h>
  30 #include <sys/types.h>
  31 #include <sys/wait.h>
  32
  33 #include <lxc/lxccontainer.h>
  34
  35 #include "lxctest.h"
  36 #include "utils.h"
  37
  38 int main(int argc, char *argv[])
  39 {
  40         int ret;
  41         struct stat st_log_file;
  42         struct lxc_container *c;
  43         struct lxc_console_log log;
  44         bool do_unlink = false;
  45         int fret = EXIT_FAILURE;
  46
  47         c = lxc_container_new("console-log", NULL);
  48         if (!c) {
  49                 lxc_error("%s", "Failed to create container \"console-log\"");
  50                 exit(fret);
  51         }
  52
  53         if (c->is_defined(c)) {
  54                 lxc_error("%s\n", "Container \"console-log\" is defined");
  55                 goto on_error_put;
  56         }
  57
  58         /* Set console ringbuffer size. */
  59         if (!c->set_config_item(c, "lxc.console.buffer.size", "4096")) {
  60                 lxc_error("%s\n", "Failed to set config item \"lxc.console.buffer.size\"");
  61                 goto on_error_put;
  62         }
  63
  64         /* Set console log file. */
  65         if (!c->set_config_item(c, "lxc.console.logfile", "/tmp/console-log.log")) {
  66                 lxc_error("%s\n", "Failed to set config item \"lxc.console.logfile\"");
  67                 goto on_error_put;
  68         }
  69
  70         if (!c->createl(c, "busybox", NULL, NULL, 0, NULL)) {
  71                 lxc_error("%s\n", "Failed to create busybox container \"console-log\"");
  72                 goto on_error_put;
  73         }
  74
  75         if (!c->is_defined(c)) {
  76                 lxc_error("%s\n", "Container \"console-log\" is not defined");
  77                 goto on_error_put;
  78         }
  79
  80         c->clear_config(c);
  81
  82         if (!c->load_config(c, NULL)) {
  83                 lxc_error("%s\n", "Failed to load config for container \"console-log\"");
  84                 goto on_error_stop;
  85         }
  86
  87         if (!c->want_daemonize(c, true)) {
  88                 lxc_error("%s\n", "Failed to mark container \"console-log\" daemonized");
  89                 goto on_error_stop;
  90         }
  91
  92         if (!c->startl(c, 0, NULL)) {
  93                 lxc_error("%s\n", "Failed to start container \"console-log\" daemonized");
  94                 goto on_error_stop;
  95         }
  96
  97         /* Leave some time for the container to write something to the log. */
  98         sleep(2);
  99
 100         /* Retrieve the contents of the ringbuffer. */
 101         log.clear = false;
 102         log.read_max = &(uint64_t){0};
 103         log.read = true;
 104
 105         ret = c->console_log(c, &log);
 106         if (ret < 0) {
 107                 lxc_error("%s - Failed to retrieve console log \n", strerror(-ret));
 108                 goto on_error_stop;
 109         } else {
 110                 lxc_debug("Retrieved %" PRIu64
 111                           " bytes from console log. Contents are \"%s\"\n",
 112                           *log.read_max, log.data);
 113                 free(log.data);
 114         }
 115
 116         /* Leave another two seconds to ensure boot is finished. */
 117         sleep(2);
 118
 119         /* Clear the console ringbuffer. */
 120         log.read_max = &(uint64_t){0};
 121         log.read = false;
 122         log.clear = true;
 123         ret = c->console_log(c, &log);
 124         if (ret < 0) {
 125                 if (ret != -ENODATA) {
 126                         lxc_error("%s - Failed to retrieve console log\n", strerror(-ret));
 127                         goto on_error_stop;
 128                 }
 129         }
 130
 131         if (!c->stop(c)) {
 132                 lxc_error("%s\n", "Failed to stop container \"console-log\"");
 133                 goto on_error_stop;
 134         }
 135
 136         c->clear_config(c);
 137
 138         if (!c->load_config(c, NULL)) {
 139                 lxc_error("%s\n", "Failed to load config for container \"console-log\"");
 140                 goto on_error_stop;
 141         }
 142
 143         if (!c->startl(c, 0, NULL)) {
 144                 lxc_error("%s\n", "Failed to start container \"console-log\" daemonized");
 145                 goto on_error_destroy;
 146         }
 147
 148         /* Leave some time for the container to write something to the log. */
 149         sleep(2);
 150
 151         ret = stat("/tmp/console-log.log", &st_log_file);
 152         if (ret < 0) {
 153                 lxc_error("%s - Failed to stat on-disk logfile\n", strerror(errno));
 154                 goto on_error_stop;
 155         }
 156
 157         /* Turn on rotation for the console log file. */
 158         if (!c->set_config_item(c, "lxc.console.rotate", "1")) {
 159                 lxc_error("%s\n", "Failed to set config item \"lxc.console.rotate\"");
 160                 goto on_error_put;
 161         }
 162
 163         if (!c->stop(c)) {
 164                 lxc_error("%s\n", "Failed to stop container \"console-log\"");
 165                 goto on_error_stop;
 166         }
 167
 168         if (!c->startl(c, 0, NULL)) {
 169                 lxc_error("%s\n", "Failed to start container \"console-log\" daemonized");
 170                 goto on_error_destroy;
 171         }
 172
 173         /* Leave some time for the container to write something to the log. */
 174         sleep(2);
 175
 176         fret = 0;
 177
 178 on_error_stop:
 179         if (c->is_running(c) && !c->stop(c))
 180                 lxc_error("%s\n", "Failed to stop container \"console-log\"");
 181
 182 on_error_destroy:
 183         if (!c->destroy(c))
 184                 lxc_error("%s\n", "Failed to destroy container \"console-log\"");
 185
 186 on_error_put:
 187         lxc_container_put(c);
 188         if (do_unlink) {
 189                 ret = unlink("/tmp/console-log.log");
 190                 if (ret < 0)
 191                         lxc_error("%s - Failed to remove container log file\n",
 192                                   strerror(errno));
 193
 194                 ret = unlink("/tmp/console-log.log.1");
 195                 if (ret < 0)
 196                         lxc_error("%s - Failed to remove container log file\n",
 197                                   strerror(errno));
 198         }
 199         exit(fret);
 200 }