src/bin/lttng/commands/status.cpp

   1 /*
   2  * Copyright (C) 2015 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-only
   5  *
   6  */
   7
   8 #define _LGPL_SOURCE
   9 #include "../command.hpp"
  10 #include "../utils.hpp"
  11
  12 #include <config.h>
  13 #include <popt.h>
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <sys/stat.h>
  18 #include <sys/types.h>
  19 #include <unistd.h>
  20
  21 #ifdef LTTNG_EMBED_HELP
  22 static const char help_msg[] =
  23 #include <lttng-status.1.h>
  24         ;
  25 #endif
  26
  27 enum {
  28         OPT_HELP = 1,
  29         OPT_LIST_OPTIONS,
  30 };
  31
  32 static struct poptOption long_options[] = {
  33         /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
  34         { "help", 'h', POPT_ARG_NONE, nullptr, OPT_HELP, nullptr, nullptr },
  35         { "list-options", 0, POPT_ARG_NONE, nullptr, OPT_LIST_OPTIONS, nullptr, nullptr },
  36         { nullptr, 0, 0, nullptr, 0, nullptr, nullptr }
  37 };
  38
  39 static int status()
  40 {
  41         const char *argv[2];
  42         int ret = CMD_SUCCESS;
  43         char *session_name = nullptr;
  44
  45         session_name = get_session_name();
  46         if (!session_name) {
  47                 ret = CMD_ERROR;
  48                 goto end;
  49         }
  50
  51         argv[0] = "list";
  52         argv[1] = session_name;
  53         ret = cmd_list(2, argv);
  54 end:
  55         free(session_name);
  56         return ret;
  57 }
  58
  59 /*
  60  * The 'status <options>' first level command
  61  */
  62 int cmd_status(int argc, const char **argv)
  63 {
  64         int opt, ret = CMD_SUCCESS;
  65         static poptContext pc;
  66
  67         pc = poptGetContext(nullptr, argc, argv, long_options, 0);
  68         poptReadDefaultConfig(pc, 0);
  69
  70         while ((opt = poptGetNextOpt(pc)) != -1) {
  71                 switch (opt) {
  72                 case OPT_HELP:
  73                         SHOW_HELP();
  74                         goto end;
  75                 case OPT_LIST_OPTIONS:
  76                         list_cmd_options(stdout, long_options);
  77                         goto end;
  78                 default:
  79                         ret = CMD_UNDEFINED;
  80                         goto end;
  81                 }
  82         }
  83
  84         if (poptPeekArg(pc) != nullptr) {
  85                 ERR("This command does not accept positional arguments.\n");
  86                 ret = CMD_UNDEFINED;
  87                 goto end;
  88         }
  89
  90         ret = status();
  91 end:
  92         poptFreeContext(pc);
  93         return ret;
  94 }