Commit | Line | Data |
---|---|---|
c864d6d7 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
c864d6d7 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
c864d6d7 | 5 | * |
c864d6d7 JG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
c864d6d7 JG |
9 | #include <inttypes.h> |
10 | #include <popt.h> | |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
c864d6d7 | 14 | |
1734c658 JRJ |
15 | #include <common/mi-lttng.h> |
16 | ||
c864d6d7 | 17 | #include "../command.h" |
050dd639 | 18 | #include <lttng/lttng.h> |
c864d6d7 JG |
19 | |
20 | static char *opt_output_path; | |
c431d5e4 JG |
21 | static bool opt_force; |
22 | static bool opt_save_all; | |
b04d42ec | 23 | static struct mi_writer *writer; |
c864d6d7 | 24 | |
4fc83d94 PP |
25 | #ifdef LTTNG_EMBED_HELP |
26 | static const char help_msg[] = | |
27 | #include <lttng-save.1.h> | |
28 | ; | |
29 | #endif | |
30 | ||
c864d6d7 JG |
31 | enum { |
32 | OPT_HELP = 1, | |
33 | OPT_ALL, | |
34 | OPT_FORCE, | |
13a810d5 | 35 | OPT_LIST_OPTIONS, |
c864d6d7 JG |
36 | }; |
37 | ||
38 | static struct poptOption save_opts[] = { | |
39 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
dff33dda JG |
40 | {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL}, |
41 | {"all", 'a', POPT_ARG_NONE, NULL, OPT_ALL, NULL, NULL}, | |
42 | {"output-path", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL}, | |
43 | {"force", 'f', POPT_ARG_NONE, NULL, OPT_FORCE, NULL, NULL}, | |
13a810d5 | 44 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
c864d6d7 JG |
45 | {0, 0, 0, 0, 0, 0, 0} |
46 | }; | |
47 | ||
1734c658 JRJ |
48 | static int mi_partial_session(const char *session_name) |
49 | { | |
50 | int ret; | |
a0377dfe FD |
51 | LTTNG_ASSERT(writer); |
52 | LTTNG_ASSERT(session_name); | |
1734c658 JRJ |
53 | |
54 | /* Open session element */ | |
55 | ret = mi_lttng_writer_open_element(writer, config_element_session); | |
56 | if (ret) { | |
57 | goto end; | |
58 | } | |
59 | ||
60 | ret = mi_lttng_writer_write_element_string(writer, config_element_name, | |
61 | session_name); | |
62 | if (ret) { | |
63 | goto end; | |
64 | } | |
65 | ||
66 | /* Closing session element */ | |
67 | ret = mi_lttng_writer_close_element(writer); | |
68 | end: | |
69 | return ret; | |
70 | } | |
71 | ||
72 | /* | |
73 | * Mi print of save command | |
74 | */ | |
75 | static int mi_save_print(const char *session_name) | |
76 | { | |
77 | int ret; | |
a0377dfe | 78 | LTTNG_ASSERT(writer); |
1734c658 JRJ |
79 | |
80 | if (opt_save_all) { | |
81 | /* We use a wildcard to represent all sessions */ | |
82 | session_name = "*"; | |
83 | } | |
84 | ||
85 | /* Print save element */ | |
86 | ret = mi_lttng_writer_open_element(writer, mi_lttng_element_save); | |
87 | if (ret) { | |
88 | goto end; | |
89 | } | |
90 | ||
91 | /* Print session element */ | |
92 | ret = mi_partial_session(session_name); | |
93 | if (ret) { | |
94 | goto end; | |
95 | } | |
96 | ||
97 | /* Path element */ | |
98 | if (opt_output_path) { | |
99 | ret = mi_lttng_writer_write_element_string(writer, config_element_path, | |
100 | opt_output_path); | |
101 | if (ret) { | |
102 | goto end; | |
103 | } | |
104 | } | |
105 | ||
106 | /* Close save element */ | |
107 | ret = mi_lttng_writer_close_element(writer); | |
108 | end: | |
109 | return ret; | |
110 | } | |
111 | ||
c864d6d7 JG |
112 | /* |
113 | * The 'save <options>' first level command | |
114 | */ | |
115 | int cmd_save(int argc, const char **argv) | |
116 | { | |
1734c658 | 117 | int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success; |
c864d6d7 | 118 | int opt; |
68c7f6e5 | 119 | const char *session_name = NULL, *leftover = NULL; |
c864d6d7 JG |
120 | poptContext pc; |
121 | struct lttng_save_session_attr *attr; | |
122 | ||
123 | pc = poptGetContext(NULL, argc, argv, save_opts, 0); | |
124 | poptReadDefaultConfig(pc, 0); | |
125 | ||
126 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
127 | switch (opt) { | |
128 | case OPT_HELP: | |
4ba92f18 | 129 | SHOW_HELP(); |
c864d6d7 JG |
130 | goto end; |
131 | case OPT_ALL: | |
c431d5e4 | 132 | opt_save_all = true; |
c864d6d7 JG |
133 | break; |
134 | case OPT_FORCE: | |
c431d5e4 | 135 | opt_force = true; |
c864d6d7 | 136 | break; |
13a810d5 DG |
137 | case OPT_LIST_OPTIONS: |
138 | list_cmd_options(stdout, save_opts); | |
139 | goto end; | |
c864d6d7 | 140 | default: |
c864d6d7 JG |
141 | ret = CMD_UNDEFINED; |
142 | goto end; | |
143 | } | |
144 | } | |
145 | ||
146 | if (!opt_save_all) { | |
147 | session_name = poptGetArg(pc); | |
59b41aa2 JRJ |
148 | if (session_name) { |
149 | DBG2("Session name: %s", session_name); | |
1734c658 JRJ |
150 | } else { |
151 | /* default to opt_save_all */ | |
c431d5e4 | 152 | opt_save_all = true; |
c864d6d7 | 153 | } |
c864d6d7 JG |
154 | } |
155 | ||
68c7f6e5 JD |
156 | leftover = poptGetArg(pc); |
157 | if (leftover) { | |
158 | ERR("Unknown argument: %s", leftover); | |
159 | ret = CMD_ERROR; | |
160 | goto end; | |
161 | } | |
162 | ||
c864d6d7 JG |
163 | attr = lttng_save_session_attr_create(); |
164 | if (!attr) { | |
165 | ret = CMD_FATAL; | |
166 | goto end_destroy; | |
167 | } | |
168 | ||
169 | if (lttng_save_session_attr_set_session_name(attr, session_name)) { | |
170 | ret = CMD_ERROR; | |
171 | goto end_destroy; | |
172 | } | |
173 | ||
174 | if (lttng_save_session_attr_set_overwrite(attr, opt_force)) { | |
175 | ret = CMD_ERROR; | |
176 | goto end_destroy; | |
177 | } | |
178 | ||
ab85fc7f | 179 | if (lttng_save_session_attr_set_output_url(attr, opt_output_path)) { |
c864d6d7 JG |
180 | ret = CMD_ERROR; |
181 | goto end_destroy; | |
182 | } | |
183 | ||
1734c658 JRJ |
184 | /* Mi check */ |
185 | if (lttng_opt_mi) { | |
186 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
187 | if (!writer) { | |
188 | ret = -LTTNG_ERR_NOMEM; | |
189 | goto end_destroy; | |
190 | } | |
191 | ||
192 | /* Open command element */ | |
193 | ret = mi_lttng_writer_command_open(writer, | |
194 | mi_lttng_element_command_save); | |
195 | if (ret) { | |
196 | ret = CMD_ERROR; | |
197 | goto end_destroy; | |
198 | } | |
199 | ||
200 | /* Open output element */ | |
201 | ret = mi_lttng_writer_open_element(writer, | |
202 | mi_lttng_element_command_output); | |
203 | if (ret) { | |
204 | ret = CMD_ERROR; | |
205 | goto end_destroy; | |
206 | } | |
207 | } | |
208 | ||
209 | command_ret = lttng_save_session(attr); | |
210 | if (command_ret < 0) { | |
211 | ERR("%s", lttng_strerror(command_ret)); | |
212 | success = 0; | |
ab85fc7f DG |
213 | } else { |
214 | /* Inform the user of what just happened on success. */ | |
215 | if (session_name && opt_output_path) { | |
216 | MSG("Session %s saved successfully in %s.", session_name, | |
217 | opt_output_path); | |
218 | } else if (session_name && !opt_output_path) { | |
219 | MSG("Session %s saved successfully.", session_name); | |
220 | } else if (!session_name && opt_output_path) { | |
221 | MSG("All sessions have been saved successfully in %s.", | |
222 | opt_output_path); | |
223 | } else { | |
224 | MSG("All sessions have been saved successfully."); | |
c864d6d7 | 225 | } |
1734c658 JRJ |
226 | success = 1; |
227 | } | |
228 | ||
229 | /* Mi Printing and closing */ | |
230 | if (lttng_opt_mi) { | |
231 | /* Mi print */ | |
232 | ret = mi_save_print(session_name); | |
233 | if (ret) { | |
234 | ret = CMD_ERROR; | |
235 | goto end_destroy; | |
236 | } | |
237 | ||
238 | /* Close output element */ | |
239 | ret = mi_lttng_writer_close_element(writer); | |
240 | if (ret) { | |
241 | ret = CMD_ERROR; | |
242 | goto end_destroy; | |
243 | } | |
244 | ||
245 | /* Success ? */ | |
246 | ret = mi_lttng_writer_write_element_bool(writer, | |
247 | mi_lttng_element_command_success, success); | |
248 | if (ret) { | |
249 | ret = CMD_ERROR; | |
250 | goto end_destroy; | |
251 | } | |
252 | ||
253 | /* Command element close */ | |
254 | ret = mi_lttng_writer_command_close(writer); | |
255 | if (ret) { | |
256 | ret = CMD_ERROR; | |
257 | goto end_destroy; | |
258 | } | |
c864d6d7 JG |
259 | } |
260 | end_destroy: | |
261 | lttng_save_session_attr_destroy(attr); | |
262 | end: | |
1734c658 JRJ |
263 | /* Mi clean-up */ |
264 | if (writer && mi_lttng_writer_destroy(writer)) { | |
265 | /* Preserve original error code */ | |
266 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
267 | } | |
268 | ||
269 | /* Overwrite ret if command failed */ | |
270 | ret = command_ret ? -command_ret : ret; | |
271 | ||
c864d6d7 JG |
272 | poptFreeContext(pc); |
273 | return ret; | |
274 | } |