src/bin/lttng/commands/status.c

   1 /*
   2  * Copyright (C) 2015 - Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License, version 2 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #define _LGPL_SOURCE
  19 #include <popt.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <sys/stat.h>
  24 #include <sys/types.h>
  25 #include <unistd.h>
  26
  27 #include "../command.h"
  28 #include "../utils.h"
  29 #include <config.h>
  30
  31 #ifdef LTTNG_EMBED_HELP
  32 static const char help_msg[] =
  33 #include <lttng-status.1.h>
  34 ;
  35 #endif
  36
  37 enum {
  38         OPT_HELP = 1,
  39         OPT_LIST_OPTIONS,
  40 };
  41
  42 static struct poptOption long_options[] = {
  43         /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
  44         {"help",        'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL},
  45         {"list-options", 0,  POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
  46         {0, 0, 0, 0, 0, 0, 0}
  47 };
  48
  49 static int status(void)
  50 {
  51         const char *argv[2];
  52         int ret = CMD_SUCCESS;
  53         char *session_name = NULL;
  54
  55         session_name = get_session_name();
  56         if (!session_name) {
  57                 ret = CMD_ERROR;
  58                 goto end;
  59         }
  60
  61         argv[0] = "list";
  62         argv[1] = session_name;
  63         ret = cmd_list(2, argv);
  64 end:
  65         free(session_name);
  66         return ret;
  67 }
  68
  69 /*
  70  * The 'status <options>' first level command
  71  */
  72 int cmd_status(int argc, const char **argv)
  73 {
  74         int opt, ret = CMD_SUCCESS;
  75         static poptContext pc;
  76
  77         pc = poptGetContext(NULL, argc, argv, long_options, 0);
  78         poptReadDefaultConfig(pc, 0);
  79
  80         while ((opt = poptGetNextOpt(pc)) != -1) {
  81                 switch (opt) {
  82                 case OPT_HELP:
  83                         SHOW_HELP();
  84                         goto end;
  85                 case OPT_LIST_OPTIONS:
  86                         list_cmd_options(stdout, long_options);
  87                         goto end;
  88                 default:
  89                         ret = CMD_UNDEFINED;
  90                         goto end;
  91                 }
  92         }
  93
  94         if (poptPeekArg(pc) != NULL) {
  95                 ERR("This command does not accept positional arguments.\n");
  96                 ret = CMD_UNDEFINED;
  97                 goto end;
  98         }
  99
 100         ret = status();
 101 end:
 102         poptFreeContext(pc);
 103         return ret;
 104 }