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f3ed775e DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
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. | |
f3ed775e DG |
7 | * |
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. | |
12 | * | |
d14d33bf AM |
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. | |
f3ed775e DG |
16 | */ |
17 | ||
18 | #define _GNU_SOURCE | |
19 | #include <popt.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
26 | ||
c399183f | 27 | #include "../command.h" |
f3ed775e | 28 | |
42224349 DG |
29 | #include <common/sessiond-comm/sessiond-comm.h> |
30 | ||
f3ed775e DG |
31 | static char *opt_session_name; |
32 | ||
33 | enum { | |
34 | OPT_HELP = 1, | |
679b4943 | 35 | OPT_LIST_OPTIONS, |
f3ed775e DG |
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}, | |
679b4943 | 41 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
f3ed775e DG |
42 | {0, 0, 0, 0, 0, 0, 0} |
43 | }; | |
44 | ||
45 | /* | |
46 | * usage | |
47 | */ | |
48 | static void usage(FILE *ofp) | |
49 | { | |
32a6298d | 50 | fprintf(ofp, "usage: lttng stop [NAME] [OPTIONS]\n"); |
f3ed775e DG |
51 | fprintf(ofp, "\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"); | |
54 | fprintf(ofp, "\n"); | |
32a6298d | 55 | fprintf(ofp, "Options:\n"); |
f3ed775e | 56 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 57 | fprintf(ofp, " --list-options Simple listing of options\n"); |
f3ed775e DG |
58 | fprintf(ofp, "\n"); |
59 | } | |
60 | ||
61 | /* | |
cd80958d | 62 | * Start tracing for all trace of the session. |
f3ed775e DG |
63 | */ |
64 | static int stop_tracing(void) | |
65 | { | |
ae856491 | 66 | int ret; |
f3ed775e DG |
67 | char *session_name; |
68 | ||
69 | if (opt_session_name == NULL) { | |
70 | session_name = get_session_name(); | |
71 | if (session_name == NULL) { | |
72 | ret = CMD_ERROR; | |
73 | goto error; | |
74 | } | |
75 | } else { | |
76 | session_name = opt_session_name; | |
77 | } | |
78 | ||
6a4f824d | 79 | ret = lttng_stop_tracing(session_name); |
f3ed775e | 80 | if (ret < 0) { |
42224349 DG |
81 | switch (-ret) { |
82 | case LTTCOMM_TRACE_ALREADY_STOPPED: | |
83 | WARN("Tracing already stopped for session %s", session_name); | |
84 | break; | |
85 | default: | |
86 | ERR("%s", lttng_strerror(ret)); | |
87 | break; | |
88 | } | |
f3ed775e DG |
89 | goto free_name; |
90 | } | |
91 | ||
ae856491 DG |
92 | ret = CMD_SUCCESS; |
93 | ||
f3ed775e DG |
94 | MSG("Tracing stopped for session %s", session_name); |
95 | ||
96 | free_name: | |
b73d0b29 MD |
97 | if (opt_session_name == NULL) { |
98 | free(session_name); | |
99 | } | |
cd80958d | 100 | |
f3ed775e DG |
101 | error: |
102 | return ret; | |
103 | } | |
104 | ||
105 | /* | |
106 | * cmd_stop | |
107 | * | |
108 | * The 'stop <options>' first level command | |
109 | */ | |
110 | int cmd_stop(int argc, const char **argv) | |
111 | { | |
ca1c3607 | 112 | int opt, ret = CMD_SUCCESS; |
f3ed775e DG |
113 | static poptContext pc; |
114 | ||
115 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
116 | poptReadDefaultConfig(pc, 0); | |
117 | ||
118 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
119 | switch (opt) { | |
120 | case OPT_HELP: | |
ca1c3607 | 121 | usage(stdout); |
f3ed775e | 122 | goto end; |
679b4943 SM |
123 | case OPT_LIST_OPTIONS: |
124 | list_cmd_options(stdout, long_options); | |
679b4943 | 125 | goto end; |
f3ed775e DG |
126 | default: |
127 | usage(stderr); | |
128 | ret = CMD_UNDEFINED; | |
129 | goto end; | |
130 | } | |
131 | } | |
132 | ||
133 | opt_session_name = (char*) poptGetArg(pc); | |
134 | ||
135 | ret = stop_tracing(); | |
136 | ||
137 | end: | |
ca1c3607 | 138 | poptFreeContext(pc); |
f3ed775e DG |
139 | return ret; |
140 | } |