ee13f120bf16fee21c4bcb0b9da7d76ea70d05a9
[lttng-tools.git] / lttng / options.c
1 /*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
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
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19 #include <popt.h>
20 #include <stdlib.h>
21
22 #include "lttng.h"
23
24 /* Option variables */
25 char *opt_tracing_group;
26 char *opt_session_name;
27 char *opt_sessiond_path;
28 int opt_trace_kernel = 0;
29 int opt_quiet = 0;
30 int opt_verbose = 0;
31 int opt_list_apps = 0;
32 int opt_no_sessiond = 0;
33
34 enum {
35 OPT_HELP = 42,
36 };
37
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 {"group", 0, POPT_ARG_STRING, &opt_tracing_group, 0, 0},
42 {"kernel", 0, POPT_ARG_VAL, &opt_trace_kernel, 1, 0, 0},
43 {"no-kernel", 0, POPT_ARG_VAL, &opt_trace_kernel, 0, 0, 0},
44 {"session", 0, POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_session_name, 0, 0},
45 {"quiet", 'q', POPT_ARG_VAL, &opt_quiet, 1, 0},
46 {"verbose", 'v', POPT_ARG_VAL, &opt_verbose, 1, 0},
47 {"list-apps", 'l', POPT_ARG_VAL, &opt_list_apps, 1, 0},
48 {"no-sessiond", 0, POPT_ARG_VAL, &opt_no_sessiond, 1, 0},
49 {"sessiond-path", 0, POPT_ARG_STRING, &opt_sessiond_path, 0, 0},
50 {0, 0, 0, 0, 0, 0}
51 };
52
53
54 /*
55 * usage
56 */
57 static void usage(FILE *ofp)
58 {
59 fprintf(ofp, "LTTng Trace Control " VERSION"\n\n");
60 fprintf(ofp, "usage : lttng [OPTION]\n");
61 fprintf(ofp, "\n");
62 fprintf(ofp, "Options:\n");
63 fprintf(ofp, " -v, --verbose Verbose mode\n");
64 fprintf(ofp, " -q, --quiet Quiet mode\n");
65 fprintf(ofp, " --help Show help\n");
66 fprintf(ofp, " --group NAME Unix tracing group name. (default: tracing)\n");
67 fprintf(ofp, " --no-sessiond Don't spawn a session daemon.\n");
68 fprintf(ofp, " --sessiond-path Session daemon full path\n");
69 fprintf(ofp, "\n");
70 fprintf(ofp, "Tracing options:\n");
71 //fprintf(ofp, " --session [NAME] Specify tracing session. If no NAME is given\n");
72 //fprintf(ofp, " or option is ommited, a session will be created\n");
73 //fprintf(ofp, " --kernel Enable kernel tracing\n");
74 //fprintf(ofp, " --no-kernel Disable kernel tracing\n");
75 fprintf(ofp, " -l, --list-apps List traceable UST applications\n");
76 }
77
78 /*
79 * parse_args
80 *
81 * Parse command line arguments.
82 * Return 0 if OK, else -1
83 */
84 int parse_args(int argc, const char **argv)
85 {
86 static poptContext pc;
87 int opt;
88
89 pc = poptGetContext("lttng", argc, argv, long_options, 0);
90 poptReadDefaultConfig(pc, 0);
91
92 while ((opt = poptGetNextOpt(pc)) != -1) {
93 switch (opt) {
94 case OPT_HELP:
95 usage(stderr);
96 clean_exit(EXIT_SUCCESS);
97 break;
98 default:
99 usage(stderr);
100 clean_exit(EXIT_FAILURE);
101 break;
102 }
103 }
104
105 if (pc) {
106 poptFreeContext(pc);
107 }
108
109 return 0;
110 }
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