2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
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.
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.
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.
24 #include <sys/types.h>
27 #include "../command.h"
29 #include <common/sessiond-comm/sessiond-comm.h>
31 static char *opt_session_name
;
38 static struct poptOption long_options
[] = {
39 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
40 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
41 {"list-options", 0, POPT_ARG_NONE
, NULL
, OPT_LIST_OPTIONS
, NULL
, NULL
},
48 static void usage(FILE *ofp
)
50 fprintf(ofp
, "usage: lttng start [NAME] [OPTIONS]\n");
52 fprintf(ofp
, "Where NAME is an optional session name. If not specified, lttng will\n");
53 fprintf(ofp
, "get it from the configuration directory (.lttng).\n");
55 fprintf(ofp
, "Options:\n");
56 fprintf(ofp
, " -h, --help Show this help\n");
57 fprintf(ofp
, " --list-options Simple listing of options\n");
64 * Start tracing for all trace of the session.
66 static int start_tracing(void)
71 if (opt_session_name
== NULL
) {
72 session_name
= get_session_name();
73 if (session_name
== NULL
) {
78 session_name
= opt_session_name
;
81 DBG("Starting tracing for session %s", session_name
);
83 ret
= lttng_start_tracing(session_name
);
86 case LTTNG_ERR_TRACE_ALREADY_STARTED
:
87 WARN("Tracing already started for session %s", session_name
);
90 ERR("%s", lttng_strerror(ret
));
98 MSG("Tracing started for session %s", session_name
);
101 if (opt_session_name
== NULL
) {
111 * The 'start <options>' first level command
113 int cmd_start(int argc
, const char **argv
)
115 int opt
, ret
= CMD_SUCCESS
;
116 static poptContext pc
;
118 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
119 poptReadDefaultConfig(pc
, 0);
121 while ((opt
= poptGetNextOpt(pc
)) != -1) {
126 case OPT_LIST_OPTIONS
:
127 list_cmd_options(stdout
, long_options
);
136 opt_session_name
= (char*) poptGetArg(pc
);
138 ret
= start_tracing();