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f3ed775e DG |
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 | |
82a3637f DG |
6 | * as published by the Free Software Foundation; only version 2 |
7 | * of the License. | |
f3ed775e DG |
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 | #define _GNU_SOURCE | |
20 | #include <popt.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
27 | ||
c399183f | 28 | #include "../command.h" |
f3ed775e DG |
29 | |
30 | static char *opt_session_name; | |
31 | ||
32 | enum { | |
33 | OPT_HELP = 1, | |
34 | }; | |
35 | ||
36 | static struct poptOption long_options[] = { | |
37 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
38 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
39 | {0, 0, 0, 0, 0, 0, 0} | |
40 | }; | |
41 | ||
42 | /* | |
43 | * usage | |
44 | */ | |
45 | static void usage(FILE *ofp) | |
46 | { | |
47 | fprintf(ofp, "usage: lttng stop [options] [NAME]\n"); | |
48 | fprintf(ofp, "\n"); | |
49 | fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n"); | |
50 | fprintf(ofp, "get it from the configuration directory (.lttng).\n"); | |
51 | fprintf(ofp, "\n"); | |
52 | fprintf(ofp, " -h, --help Show this help\n"); | |
53 | fprintf(ofp, "\n"); | |
54 | } | |
55 | ||
56 | /* | |
cd80958d | 57 | * Start tracing for all trace of the session. |
f3ed775e DG |
58 | */ |
59 | static int stop_tracing(void) | |
60 | { | |
61 | int ret = CMD_SUCCESS; | |
62 | char *session_name; | |
63 | ||
64 | if (opt_session_name == NULL) { | |
65 | session_name = get_session_name(); | |
66 | if (session_name == NULL) { | |
67 | ret = CMD_ERROR; | |
68 | goto error; | |
69 | } | |
70 | } else { | |
71 | session_name = opt_session_name; | |
72 | } | |
73 | ||
6a4f824d | 74 | ret = lttng_stop_tracing(session_name); |
f3ed775e DG |
75 | if (ret < 0) { |
76 | goto free_name; | |
77 | } | |
78 | ||
79 | MSG("Tracing stopped for session %s", session_name); | |
80 | ||
81 | free_name: | |
b73d0b29 MD |
82 | if (opt_session_name == NULL) { |
83 | free(session_name); | |
84 | } | |
cd80958d | 85 | |
f3ed775e DG |
86 | error: |
87 | return ret; | |
88 | } | |
89 | ||
90 | /* | |
91 | * cmd_stop | |
92 | * | |
93 | * The 'stop <options>' first level command | |
94 | */ | |
95 | int cmd_stop(int argc, const char **argv) | |
96 | { | |
97 | int opt, ret; | |
98 | static poptContext pc; | |
99 | ||
100 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
101 | poptReadDefaultConfig(pc, 0); | |
102 | ||
103 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
104 | switch (opt) { | |
105 | case OPT_HELP: | |
106 | usage(stderr); | |
107 | ret = CMD_SUCCESS; | |
108 | goto end; | |
109 | default: | |
110 | usage(stderr); | |
111 | ret = CMD_UNDEFINED; | |
112 | goto end; | |
113 | } | |
114 | } | |
115 | ||
116 | opt_session_name = (char*) poptGetArg(pc); | |
117 | ||
118 | ret = stop_tracing(); | |
119 | ||
120 | end: | |
121 | return ret; | |
122 | } |