59d59046dad25d43d680b638fa70dbd418203cb8
[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_uuid;
27 char *opt_create_session;
28 char *opt_sessiond_path;
29 char *opt_destroy_session;
30 int opt_trace_kernel = 0;
31 int opt_quiet = 0;
32 int opt_verbose = 0;
33 int opt_list_apps = 0;
34 int opt_no_sessiond = 0;
35 int opt_list_session = 0;
36
37 enum {
38 OPT_HELP = 42,
39 };
40
41 static struct poptOption long_options[] = {
42 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
43 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
44 {"group", 0, POPT_ARG_STRING, &opt_tracing_group, 0, 0},
45 {"kernel", 0, POPT_ARG_VAL, &opt_trace_kernel, 1, 0, 0},
46 {"no-kernel", 0, POPT_ARG_VAL, &opt_trace_kernel, 0, 0, 0},
47 //{"session", 0, POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_session_name, 0, 0},
48 {"session", 's', POPT_ARG_STRING, &opt_session_uuid, 0, 0},
49 {"create-session", 'c', POPT_ARG_STRING, &opt_create_session, 0, 0},
50 {"quiet", 'q', POPT_ARG_VAL, &opt_quiet, 1, 0},
51 {"verbose", 'v', POPT_ARG_VAL, &opt_verbose, 1, 0},
52 {"list-apps", 'L', POPT_ARG_VAL, &opt_list_apps, 1, 0},
53 {"no-sessiond", 0, POPT_ARG_VAL, &opt_no_sessiond, 1, 0},
54 {"sessiond-path", 0, POPT_ARG_STRING, &opt_sessiond_path, 0, 0},
55 {"list-sessions", 'l', POPT_ARG_VAL, &opt_list_session, 1, 0},
56 {"destroy-session", 'd', POPT_ARG_STRING, &opt_destroy_session, 0, 0},
57 {0, 0, 0, 0, 0, 0}
58 };
59
60
61 /*
62 * usage
63 */
64 static void usage(FILE *ofp)
65 {
66 fprintf(ofp, "LTTng Trace Control " VERSION"\n\n");
67 fprintf(ofp, "usage : lttng [OPTION]\n");
68 fprintf(ofp, "\n");
69 fprintf(ofp, "Options:\n");
70 fprintf(ofp, " -v, --verbose Verbose mode\n");
71 fprintf(ofp, " -q, --quiet Quiet mode\n");
72 fprintf(ofp, " --help Show help\n");
73 fprintf(ofp, " --group NAME Unix tracing group name. (default: tracing)\n");
74 fprintf(ofp, " --no-sessiond Don't spawn a session daemon.\n");
75 fprintf(ofp, " --sessiond-path Session daemon full path\n");
76 fprintf(ofp, "\n");
77 fprintf(ofp, "Session options:\n");
78 fprintf(ofp, " -c, --create-session NAME Create a new session\n");
79 fprintf(ofp, " -l, --list-sessions List all available sessions\n");
80 fprintf(ofp, " -s, --session UUID Specify tracing session using UUID.\n");
81 fprintf(ofp, " -d, --destroy-session=NAME Destroy the session specified by NAME\n");
82 fprintf(ofp, "\n");
83 fprintf(ofp, "Tracing options:\n");
84 //fprintf(ofp, " --kernel Enable kernel tracing\n");
85 //fprintf(ofp, " --no-kernel Disable kernel tracing\n");
86 fprintf(ofp, " -L, --list-apps List traceable UST applications\n");
87 }
88
89 /*
90 * parse_args
91 *
92 * Parse command line arguments.
93 * Return 0 if OK, else -1
94 */
95 int parse_args(int argc, const char **argv)
96 {
97 static poptContext pc;
98 int opt;
99
100 /* If no options, fail */
101 if (argc < 2) {
102 return -1;
103 }
104
105 pc = poptGetContext("lttng", argc, argv, long_options, 0);
106 poptReadDefaultConfig(pc, 0);
107
108 while ((opt = poptGetNextOpt(pc)) != -1) {
109 switch (opt) {
110 case OPT_HELP:
111 usage(stderr);
112 clean_exit(EXIT_SUCCESS);
113 break;
114 default:
115 usage(stderr);
116 clean_exit(EXIT_FAILURE);
117 break;
118 }
119 }
120
121 if (pc) {
122 poptFreeContext(pc);
123 }
124
125 return 0;
126 }
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