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 #define __STDC_FORMAT_MACROS
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <inttypes.h>
  23 #include <signal.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <sys/stat.h>
  29 #include <sys/types.h>
  30 #include <sys/wait.h>
  31
  32 #include <lxc/lxccontainer.h>
  33
  34 #include "lxctest.h"
  35 #include "utils.h"
  36
  37 int main(int argc, char *argv[])
  38 {
  39         int ret;
  40         struct stat st_log_file;
  41         struct lxc_container *c;
  42         struct lxc_console_log log;
  43         bool do_unlink = false;
  44         int fret = EXIT_FAILURE;
  45
  46         c = lxc_container_new("console-log", NULL);
  47         if (!c) {
  48                 lxc_error("%s", "Failed to create container \"console-log\"");
  49                 exit(fret);
  50         }
  51
  52         if (c->is_defined(c)) {
  53                 lxc_error("%s\n", "Container \"console-log\" is defined");
  54                 goto on_error_put;
  55         }
  56
  57         /* Set console ringbuffer size. */
  58         if (!c->set_config_item(c, "lxc.console.buffer.size", "4096")) {
  59                 lxc_error("%s\n", "Failed to set config item \"lxc.console.buffer.size\"");
  60                 goto on_error_put;
  61         }
  62
  63         /* Set console log file. */
  64         if (!c->set_config_item(c, "lxc.console.logfile", "/tmp/console-log.log")) {
  65                 lxc_error("%s\n", "Failed to set config item \"lxc.console.logfile\"");
  66                 goto on_error_put;
  67         }
  68
  69         if (!c->createl(c, "busybox", NULL, NULL, 0, NULL)) {
  70                 lxc_error("%s\n", "Failed to create busybox container \"console-log\"");
  71                 goto on_error_put;
  72         }
  73
  74         if (!c->is_defined(c)) {
  75                 lxc_error("%s\n", "Container \"console-log\" is not defined");
  76                 goto on_error_put;
  77         }
  78
  79         c->clear_config(c);
  80
  81         if (!c->load_config(c, NULL)) {
  82                 lxc_error("%s\n", "Failed to load config for container \"console-log\"");
  83                 goto on_error_stop;
  84         }
  85
  86         if (!c->want_daemonize(c, true)) {
  87                 lxc_error("%s\n", "Failed to mark container \"console-log\" daemonized");
  88                 goto on_error_stop;
  89         }
  90
  91         if (!c->startl(c, 0, NULL)) {
  92                 lxc_error("%s\n", "Failed to start container \"console-log\" daemonized");
  93                 goto on_error_stop;
  94         }
  95
  96         /* Leave some time for the container to write something to the log. */
  97         sleep(2);
  98
  99         /* Retrieve the contents of the ringbuffer. */
 100         log.clear = false;
 101         log.read_max = &(uint64_t){0};
 102         log.read = true;
 103
 104         ret = c->console_log(c, &log);
 105         if (ret < 0) {
 106                 lxc_error("%s - Failed to retrieve console log \n", strerror(-ret));
 107                 goto on_error_stop;
 108         } else {
 109                 lxc_debug("Retrieved %" PRIu64
 110                           " bytes from console log. Contents are \"%s\"\n",
 111                           *log.read_max, log.data);
 112         }
 113
 114         /* Leave another two seconds to ensure boot is finished. */
 115         sleep(2);
 116
 117         /* Clear the console ringbuffer. */
 118         log.read_max = &(uint64_t){0};
 119         log.read = false;
 120         log.clear = true;
 121         ret = c->console_log(c, &log);
 122         if (ret < 0) {
 123                 if (ret != -ENODATA) {
 124                         lxc_error("%s - Failed to retrieve console log\n", strerror(-ret));
 125                         goto on_error_stop;
 126                 }
 127         }
 128
 129         if (!c->stop(c)) {
 130                 lxc_error("%s\n", "Failed to stop container \"console-log\"");
 131                 goto on_error_stop;
 132         }
 133
 134         c->clear_config(c);
 135
 136         if (!c->load_config(c, NULL)) {
 137                 lxc_error("%s\n", "Failed to load config for container \"console-log\"");
 138                 goto on_error_stop;
 139         }
 140
 141         if (!c->startl(c, 0, NULL)) {
 142                 lxc_error("%s\n", "Failed to start container \"console-log\" daemonized");
 143                 goto on_error_destroy;
 144         }
 145
 146         /* Leave some time for the container to write something to the log. */
 147         sleep(2);
 148
 149         ret = stat("/tmp/console-log.log", &st_log_file);
 150         if (ret < 0) {
 151                 lxc_error("%s - Failed to stat on-disk logfile\n", strerror(errno));
 152                 goto on_error_stop;
 153         }
 154
 155         /* Turn on rotation for the console log file. */
 156         if (!c->set_config_item(c, "lxc.console.rotate", "1")) {
 157                 lxc_error("%s\n", "Failed to set config item \"lxc.console.rotate\"");
 158                 goto on_error_put;
 159         }
 160
 161         if (!c->stop(c)) {
 162                 lxc_error("%s\n", "Failed to stop container \"console-log\"");
 163                 goto on_error_stop;
 164         }
 165
 166         if (!c->startl(c, 0, NULL)) {
 167                 lxc_error("%s\n", "Failed to start container \"console-log\" daemonized");
 168                 goto on_error_destroy;
 169         }
 170
 171         /* Leave some time for the container to write something to the log. */
 172         sleep(2);
 173
 174         fret = 0;
 175
 176 on_error_stop:
 177         if (c->is_running(c) && !c->stop(c))
 178                 lxc_error("%s\n", "Failed to stop container \"console-log\"");
 179
 180 on_error_destroy:
 181         if (!c->destroy(c))
 182                 lxc_error("%s\n", "Failed to destroy container \"console-log\"");
 183
 184 on_error_put:
 185         lxc_container_put(c);
 186         if (do_unlink) {
 187                 ret = unlink("/tmp/console-log.log");
 188                 if (ret < 0)
 189                         lxc_error("%s - Failed to remove container log file\n",
 190                                   strerror(errno));
 191
 192                 ret = unlink("/tmp/console-log.log.1");
 193                 if (ret < 0)
 194                         lxc_error("%s - Failed to remove container log file\n",
 195                                   strerror(errno));
 196         }
 197         exit(fret);
 198 }