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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 | 31 | static char *opt_session_name; |
38ee087f | 32 | static int opt_no_wait; |
f3ed775e DG |
33 | |
34 | enum { | |
35 | OPT_HELP = 1, | |
679b4943 | 36 | OPT_LIST_OPTIONS, |
f3ed775e DG |
37 | }; |
38 | ||
39 | static struct poptOption long_options[] = { | |
40 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
41 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
679b4943 | 42 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
38ee087f | 43 | {"no-wait", 'n', POPT_ARG_VAL, &opt_no_wait, 1, 0, 0}, |
f3ed775e DG |
44 | {0, 0, 0, 0, 0, 0, 0} |
45 | }; | |
46 | ||
47 | /* | |
48 | * usage | |
49 | */ | |
50 | static void usage(FILE *ofp) | |
51 | { | |
32a6298d | 52 | fprintf(ofp, "usage: lttng stop [NAME] [OPTIONS]\n"); |
f3ed775e DG |
53 | fprintf(ofp, "\n"); |
54 | fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n"); | |
55 | fprintf(ofp, "get it from the configuration directory (.lttng).\n"); | |
56 | fprintf(ofp, "\n"); | |
32a6298d | 57 | fprintf(ofp, "Options:\n"); |
f3ed775e | 58 | fprintf(ofp, " -h, --help Show this help\n"); |
679b4943 | 59 | fprintf(ofp, " --list-options Simple listing of options\n"); |
38ee087f | 60 | fprintf(ofp, " -n, --no-wait Don't wait for data availability\n"); |
f3ed775e DG |
61 | fprintf(ofp, "\n"); |
62 | } | |
63 | ||
64 | /* | |
cd80958d | 65 | * Start tracing for all trace of the session. |
f3ed775e DG |
66 | */ |
67 | static int stop_tracing(void) | |
68 | { | |
ae856491 | 69 | int ret; |
f3ed775e DG |
70 | char *session_name; |
71 | ||
72 | if (opt_session_name == NULL) { | |
73 | session_name = get_session_name(); | |
74 | if (session_name == NULL) { | |
75 | ret = CMD_ERROR; | |
76 | goto error; | |
77 | } | |
78 | } else { | |
79 | session_name = opt_session_name; | |
80 | } | |
81 | ||
38ee087f DG |
82 | if (opt_no_wait) { |
83 | ret = lttng_stop_tracing_no_wait(session_name); | |
84 | } else { | |
85 | ret = lttng_stop_tracing(session_name); | |
86 | } | |
f3ed775e | 87 | if (ret < 0) { |
42224349 | 88 | switch (-ret) { |
f73fabfd | 89 | case LTTNG_ERR_TRACE_ALREADY_STOPPED: |
42224349 DG |
90 | WARN("Tracing already stopped for session %s", session_name); |
91 | break; | |
92 | default: | |
93 | ERR("%s", lttng_strerror(ret)); | |
94 | break; | |
95 | } | |
f3ed775e DG |
96 | goto free_name; |
97 | } | |
98 | ||
ae856491 DG |
99 | ret = CMD_SUCCESS; |
100 | ||
f3ed775e DG |
101 | MSG("Tracing stopped for session %s", session_name); |
102 | ||
103 | free_name: | |
b73d0b29 MD |
104 | if (opt_session_name == NULL) { |
105 | free(session_name); | |
106 | } | |
cd80958d | 107 | |
f3ed775e DG |
108 | error: |
109 | return ret; | |
110 | } | |
111 | ||
112 | /* | |
113 | * cmd_stop | |
114 | * | |
115 | * The 'stop <options>' first level command | |
116 | */ | |
117 | int cmd_stop(int argc, const char **argv) | |
118 | { | |
ca1c3607 | 119 | int opt, ret = CMD_SUCCESS; |
f3ed775e DG |
120 | static poptContext pc; |
121 | ||
122 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
123 | poptReadDefaultConfig(pc, 0); | |
124 | ||
125 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
126 | switch (opt) { | |
127 | case OPT_HELP: | |
ca1c3607 | 128 | usage(stdout); |
f3ed775e | 129 | goto end; |
679b4943 SM |
130 | case OPT_LIST_OPTIONS: |
131 | list_cmd_options(stdout, long_options); | |
679b4943 | 132 | goto end; |
f3ed775e DG |
133 | default: |
134 | usage(stderr); | |
135 | ret = CMD_UNDEFINED; | |
136 | goto end; | |
137 | } | |
138 | } | |
139 | ||
140 | opt_session_name = (char*) poptGetArg(pc); | |
141 | ||
142 | ret = stop_tracing(); | |
143 | ||
144 | end: | |
ca1c3607 | 145 | poptFreeContext(pc); |
f3ed775e DG |
146 | return ret; |
147 | } |