Commit | Line | Data |
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c864d6d7 JG |
1 | /* |
2 | * Copyright (C) 2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
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. | |
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 | * | |
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. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
c864d6d7 JG |
19 | #include <inttypes.h> |
20 | #include <popt.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <assert.h> | |
25 | ||
1734c658 JRJ |
26 | #include <common/mi-lttng.h> |
27 | ||
c864d6d7 JG |
28 | #include "../command.h" |
29 | #include <lttng/save.h> | |
30 | ||
31 | static char *opt_output_path; | |
c431d5e4 JG |
32 | static bool opt_force; |
33 | static bool opt_save_all; | |
b04d42ec | 34 | static struct mi_writer *writer; |
c864d6d7 | 35 | |
4fc83d94 PP |
36 | #ifdef LTTNG_EMBED_HELP |
37 | static const char help_msg[] = | |
38 | #include <lttng-save.1.h> | |
39 | ; | |
40 | #endif | |
41 | ||
c864d6d7 JG |
42 | enum { |
43 | OPT_HELP = 1, | |
44 | OPT_ALL, | |
45 | OPT_FORCE, | |
13a810d5 | 46 | OPT_LIST_OPTIONS, |
c864d6d7 JG |
47 | }; |
48 | ||
49 | static struct poptOption save_opts[] = { | |
50 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
dff33dda JG |
51 | {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL}, |
52 | {"all", 'a', POPT_ARG_NONE, NULL, OPT_ALL, NULL, NULL}, | |
53 | {"output-path", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL}, | |
54 | {"force", 'f', POPT_ARG_NONE, NULL, OPT_FORCE, NULL, NULL}, | |
13a810d5 | 55 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
c864d6d7 JG |
56 | {0, 0, 0, 0, 0, 0, 0} |
57 | }; | |
58 | ||
1734c658 JRJ |
59 | static int mi_partial_session(const char *session_name) |
60 | { | |
61 | int ret; | |
62 | assert(writer); | |
63 | assert(session_name); | |
64 | ||
65 | /* Open session element */ | |
66 | ret = mi_lttng_writer_open_element(writer, config_element_session); | |
67 | if (ret) { | |
68 | goto end; | |
69 | } | |
70 | ||
71 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
72 | session_name); | |
73 | if (ret) { | |
74 | goto end; | |
75 | } | |
76 | ||
77 | /* Closing session element */ | |
78 | ret = mi_lttng_writer_close_element(writer); | |
79 | end: | |
80 | return ret; | |
81 | } | |
82 | ||
83 | /* | |
84 | * Mi print of save command | |
85 | */ | |
86 | static int mi_save_print(const char *session_name) | |
87 | { | |
88 | int ret; | |
89 | assert(writer); | |
90 | ||
91 | if (opt_save_all) { | |
92 | /* We use a wildcard to represent all sessions */ | |
93 | session_name = "*"; | |
94 | } | |
95 | ||
96 | /* Print save element */ | |
97 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_save); | |
98 | if (ret) { | |
99 | goto end; | |
100 | } | |
101 | ||
102 | /* Print session element */ | |
103 | ret = mi_partial_session(session_name); | |
104 | if (ret) { | |
105 | goto end; | |
106 | } | |
107 | ||
108 | /* Path element */ | |
109 | if (opt_output_path) { | |
110 | ret = mi_lttng_writer_write_element_string(writer, config_element_path, | |
111 | opt_output_path); | |
112 | if (ret) { | |
113 | goto end; | |
114 | } | |
115 | } | |
116 | ||
117 | /* Close save element */ | |
118 | ret = mi_lttng_writer_close_element(writer); | |
119 | end: | |
120 | return ret; | |
121 | } | |
122 | ||
c864d6d7 JG |
123 | /* |
124 | * The 'save <options>' first level command | |
125 | */ | |
126 | int cmd_save(int argc, const char **argv) | |
127 | { | |
1734c658 | 128 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success; |
c864d6d7 JG |
129 | int opt; |
130 | const char *session_name = NULL; | |
131 | poptContext pc; | |
132 | struct lttng_save_session_attr *attr; | |
133 | ||
134 | pc = poptGetContext(NULL, argc, argv, save_opts, 0); | |
135 | poptReadDefaultConfig(pc, 0); | |
136 | ||
137 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
138 | switch (opt) { | |
139 | case OPT_HELP: | |
4ba92f18 | 140 | SHOW_HELP(); |
c864d6d7 JG |
141 | goto end; |
142 | case OPT_ALL: | |
c431d5e4 | 143 | opt_save_all = true; |
c864d6d7 JG |
144 | break; |
145 | case OPT_FORCE: | |
c431d5e4 | 146 | opt_force = true; |
c864d6d7 | 147 | break; |
13a810d5 DG |
148 | case OPT_LIST_OPTIONS: |
149 | list_cmd_options(stdout, save_opts); | |
150 | goto end; | |
c864d6d7 | 151 | default: |
c864d6d7 JG |
152 | ret = CMD_UNDEFINED; |
153 | goto end; | |
154 | } | |
155 | } | |
156 | ||
157 | if (!opt_save_all) { | |
158 | session_name = poptGetArg(pc); | |
59b41aa2 JRJ |
159 | if (session_name) { |
160 | DBG2("Session name: %s", session_name); | |
1734c658 JRJ |
161 | } else { |
162 | /* default to opt_save_all */ | |
c431d5e4 | 163 | opt_save_all = true; |
c864d6d7 | 164 | } |
c864d6d7 JG |
165 | } |
166 | ||
167 | attr = lttng_save_session_attr_create(); | |
168 | if (!attr) { | |
169 | ret = CMD_FATAL; | |
170 | goto end_destroy; | |
171 | } | |
172 | ||
173 | if (lttng_save_session_attr_set_session_name(attr, session_name)) { | |
174 | ret = CMD_ERROR; | |
175 | goto end_destroy; | |
176 | } | |
177 | ||
178 | if (lttng_save_session_attr_set_overwrite(attr, opt_force)) { | |
179 | ret = CMD_ERROR; | |
180 | goto end_destroy; | |
181 | } | |
182 | ||
ab85fc7f | 183 | if (lttng_save_session_attr_set_output_url(attr, opt_output_path)) { |
c864d6d7 JG |
184 | ret = CMD_ERROR; |
185 | goto end_destroy; | |
186 | } | |
187 | ||
1734c658 JRJ |
188 | /* Mi check */ |
189 | if (lttng_opt_mi) { | |
190 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
191 | if (!writer) { | |
192 | ret = -LTTNG_ERR_NOMEM; | |
193 | goto end_destroy; | |
194 | } | |
195 | ||
196 | /* Open command element */ | |
197 | ret = mi_lttng_writer_command_open(writer, | |
198 | mi_lttng_element_command_save); | |
199 | if (ret) { | |
200 | ret = CMD_ERROR; | |
201 | goto end_destroy; | |
202 | } | |
203 | ||
204 | /* Open output element */ | |
205 | ret = mi_lttng_writer_open_element(writer, | |
206 | mi_lttng_element_command_output); | |
207 | if (ret) { | |
208 | ret = CMD_ERROR; | |
209 | goto end_destroy; | |
210 | } | |
211 | } | |
212 | ||
213 | command_ret = lttng_save_session(attr); | |
214 | if (command_ret < 0) { | |
215 | ERR("%s", lttng_strerror(command_ret)); | |
216 | success = 0; | |
ab85fc7f DG |
217 | } else { |
218 | /* Inform the user of what just happened on success. */ | |
219 | if (session_name && opt_output_path) { | |
220 | MSG("Session %s saved successfully in %s.", session_name, | |
221 | opt_output_path); | |
222 | } else if (session_name && !opt_output_path) { | |
223 | MSG("Session %s saved successfully.", session_name); | |
224 | } else if (!session_name && opt_output_path) { | |
225 | MSG("All sessions have been saved successfully in %s.", | |
226 | opt_output_path); | |
227 | } else { | |
228 | MSG("All sessions have been saved successfully."); | |
c864d6d7 | 229 | } |
1734c658 JRJ |
230 | success = 1; |
231 | } | |
232 | ||
233 | /* Mi Printing and closing */ | |
234 | if (lttng_opt_mi) { | |
235 | /* Mi print */ | |
236 | ret = mi_save_print(session_name); | |
237 | if (ret) { | |
238 | ret = CMD_ERROR; | |
239 | goto end_destroy; | |
240 | } | |
241 | ||
242 | /* Close output element */ | |
243 | ret = mi_lttng_writer_close_element(writer); | |
244 | if (ret) { | |
245 | ret = CMD_ERROR; | |
246 | goto end_destroy; | |
247 | } | |
248 | ||
249 | /* Success ? */ | |
250 | ret = mi_lttng_writer_write_element_bool(writer, | |
251 | mi_lttng_element_command_success, success); | |
252 | if (ret) { | |
253 | ret = CMD_ERROR; | |
254 | goto end_destroy; | |
255 | } | |
256 | ||
257 | /* Command element close */ | |
258 | ret = mi_lttng_writer_command_close(writer); | |
259 | if (ret) { | |
260 | ret = CMD_ERROR; | |
261 | goto end_destroy; | |
262 | } | |
c864d6d7 JG |
263 | } |
264 | end_destroy: | |
265 | lttng_save_session_attr_destroy(attr); | |
266 | end: | |
1734c658 JRJ |
267 | /* Mi clean-up */ |
268 | if (writer && mi_lttng_writer_destroy(writer)) { | |
269 | /* Preserve original error code */ | |
270 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
271 | } | |
272 | ||
273 | /* Overwrite ret if command failed */ | |
274 | ret = command_ret ? -command_ret : ret; | |
275 | ||
c864d6d7 JG |
276 | poptFreeContext(pc); |
277 | return ret; | |
278 | } |