Commit | Line | Data |
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eded6438 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2015 Julien Desfossez <jdesfossez@efficios.com> |
eded6438 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
eded6438 | 5 | * |
eded6438 JD |
6 | */ |
7 | ||
8 | #define _LGPL_SOURCE | |
9 | #include <assert.h> | |
10 | #include <ctype.h> | |
11 | #include <popt.h> | |
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
15 | #include <unistd.h> | |
16 | ||
17 | #include <common/mi-lttng.h> | |
18 | ||
19 | #include "../command.h" | |
20 | ||
21 | static char *opt_session_name; | |
22 | static char *session_name = NULL; | |
23 | ||
24 | static int regenerate_metadata(int argc, const char **argv); | |
c2561365 | 25 | static int regenerate_statedump(int argc, const char **argv); |
eded6438 | 26 | |
4fc83d94 PP |
27 | #ifdef LTTNG_EMBED_HELP |
28 | static const char help_msg[] = | |
29 | #include <lttng-regenerate.1.h> | |
30 | ; | |
31 | #endif | |
32 | ||
eded6438 JD |
33 | enum { |
34 | OPT_HELP = 1, | |
35 | OPT_LIST_OPTIONS, | |
36 | OPT_LIST_COMMANDS, | |
37 | }; | |
38 | ||
39 | static struct mi_writer *writer; | |
40 | ||
41 | static struct poptOption long_options[] = { | |
42 | /* { longName, shortName, argInfo, argPtr, value, descrip, argDesc, } */ | |
43 | { "help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0, }, | |
44 | { "session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, | |
45 | { "list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, 0, 0, }, | |
46 | { "list-commands", 0, POPT_ARG_NONE, NULL, OPT_LIST_COMMANDS}, | |
47 | { 0, 0, 0, 0, 0, 0, 0, }, | |
48 | }; | |
49 | ||
50 | static struct cmd_struct actions[] = { | |
51 | { "metadata", regenerate_metadata }, | |
c2561365 | 52 | { "statedump", regenerate_statedump }, |
eded6438 JD |
53 | { NULL, NULL } /* Array closure */ |
54 | }; | |
55 | ||
56 | /* | |
57 | * Count and return the number of arguments in argv. | |
58 | */ | |
59 | static int count_arguments(const char **argv) | |
60 | { | |
61 | int i = 0; | |
62 | ||
63 | assert(argv); | |
64 | ||
65 | while (argv[i] != NULL) { | |
66 | i++; | |
67 | } | |
68 | ||
69 | return i; | |
70 | } | |
71 | ||
72 | static int regenerate_metadata(int argc, const char **argv) | |
73 | { | |
74 | int ret; | |
75 | ||
76 | if (argc > 1) { | |
fcf3687f | 77 | ret = CMD_UNDEFINED; |
eded6438 JD |
78 | goto end; |
79 | } | |
80 | ret = lttng_regenerate_metadata(session_name); | |
81 | if (ret == 0) { | |
82 | MSG("Metadata successfully regenerated for session %s", session_name); | |
fcf3687f JG |
83 | } else { |
84 | ERR("%s", lttng_strerror(ret)); | |
eded6438 JD |
85 | } |
86 | ||
87 | end: | |
88 | return ret; | |
89 | } | |
90 | ||
c2561365 JD |
91 | static int regenerate_statedump(int argc, const char **argv) |
92 | { | |
93 | int ret; | |
94 | ||
95 | if (argc > 1) { | |
96 | ret = -LTTNG_ERR_INVALID; | |
97 | goto end; | |
98 | } | |
99 | ret = lttng_regenerate_statedump(session_name); | |
100 | if (ret == 0) { | |
101 | MSG("State dump successfully regenerated for session %s", session_name); | |
102 | } | |
103 | ||
104 | end: | |
105 | return ret; | |
106 | } | |
107 | ||
eded6438 JD |
108 | static int handle_command(const char **argv) |
109 | { | |
110 | struct cmd_struct *cmd; | |
111 | int ret = CMD_SUCCESS, i = 0, argc, command_ret = CMD_SUCCESS; | |
112 | ||
113 | if (argv == NULL) { | |
fcf3687f | 114 | ERR("No object specified for regenerate command."); |
eded6438 JD |
115 | command_ret = CMD_ERROR; |
116 | goto end; | |
117 | } | |
118 | ||
119 | argc = count_arguments(argv); | |
7ff4dd49 | 120 | assert(argc >= 1); |
eded6438 JD |
121 | |
122 | cmd = &actions[i]; | |
123 | while (cmd->func != NULL) { | |
124 | /* Find command */ | |
125 | if (strcmp(argv[0], cmd->name) == 0) { | |
126 | if (lttng_opt_mi) { | |
127 | /* Action element */ | |
128 | ret = mi_lttng_writer_open_element(writer, | |
129 | mi_lttng_element_command_regenerate_action); | |
130 | if (ret) { | |
131 | ret = CMD_ERROR; | |
132 | goto end; | |
133 | } | |
134 | ||
135 | /* Name of the action */ | |
136 | ret = mi_lttng_writer_write_element_string(writer, | |
137 | config_element_name, argv[0]); | |
138 | if (ret) { | |
139 | ret = CMD_ERROR; | |
140 | goto end; | |
141 | } | |
142 | } | |
143 | command_ret = cmd->func(argc, argv); | |
144 | if (lttng_opt_mi) { | |
145 | /* Close output and action element */ | |
146 | ret = mi_lttng_writer_close_element(writer); | |
147 | if (ret) { | |
148 | ret = CMD_ERROR; | |
149 | goto end; | |
150 | } | |
151 | } | |
152 | goto end; | |
153 | } | |
154 | ||
155 | cmd = &actions[i++]; | |
156 | } | |
157 | ||
158 | ret = CMD_UNDEFINED; | |
159 | ||
160 | end: | |
161 | /* Overwrite ret if an error occurred in cmd->func() */ | |
162 | ret = command_ret ? command_ret : ret; | |
163 | return ret; | |
164 | } | |
165 | ||
166 | /* | |
167 | * regenerate command handling. | |
168 | */ | |
169 | int cmd_regenerate(int argc, const char **argv) | |
170 | { | |
171 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; | |
172 | static poptContext pc; | |
173 | ||
174 | if (argc < 1) { | |
175 | SHOW_HELP(); | |
176 | ret = CMD_ERROR; | |
177 | goto end; | |
178 | } | |
179 | ||
180 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
181 | poptReadDefaultConfig(pc, 0); | |
182 | ||
183 | if (lttng_opt_mi) { | |
184 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
185 | if (!writer) { | |
186 | ret = -LTTNG_ERR_NOMEM; | |
187 | goto end; | |
188 | } | |
189 | /* Open command element */ | |
190 | ret = mi_lttng_writer_command_open(writer, | |
191 | mi_lttng_element_command_regenerate); | |
192 | if (ret) { | |
193 | ret = CMD_ERROR; | |
194 | goto end; | |
195 | } | |
196 | ||
197 | /* Open output element */ | |
198 | ret = mi_lttng_writer_open_element(writer, | |
199 | mi_lttng_element_command_output); | |
200 | if (ret) { | |
201 | ret = CMD_ERROR; | |
202 | goto end; | |
203 | } | |
204 | } | |
205 | ||
206 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
207 | switch (opt) { | |
208 | case OPT_HELP: | |
209 | SHOW_HELP(); | |
210 | goto end; | |
211 | case OPT_LIST_OPTIONS: | |
212 | list_cmd_options(stdout, long_options); | |
213 | goto end; | |
214 | case OPT_LIST_COMMANDS: | |
215 | list_commands(actions, stdout); | |
216 | goto end; | |
217 | default: | |
218 | SHOW_HELP(); | |
219 | ret = CMD_UNDEFINED; | |
220 | goto end; | |
221 | } | |
222 | } | |
223 | ||
224 | if (!opt_session_name) { | |
225 | session_name = get_session_name(); | |
226 | if (session_name == NULL) { | |
227 | ret = CMD_ERROR; | |
228 | goto end; | |
229 | } | |
230 | } else { | |
231 | session_name = opt_session_name; | |
232 | } | |
233 | ||
234 | command_ret = handle_command(poptGetArgs(pc)); | |
235 | if (command_ret) { | |
fcf3687f | 236 | success = 0; |
eded6438 JD |
237 | } |
238 | ||
239 | if (lttng_opt_mi) { | |
240 | /* Close output element */ | |
241 | ret = mi_lttng_writer_close_element(writer); | |
242 | if (ret) { | |
243 | ret = CMD_ERROR; | |
244 | goto end; | |
245 | } | |
246 | ||
247 | /* Success ? */ | |
248 | ret = mi_lttng_writer_write_element_bool(writer, | |
249 | mi_lttng_element_command_success, success); | |
250 | if (ret) { | |
251 | ret = CMD_ERROR; | |
252 | goto end; | |
253 | } | |
254 | ||
255 | /* Command element close */ | |
256 | ret = mi_lttng_writer_command_close(writer); | |
257 | if (ret) { | |
258 | ret = CMD_ERROR; | |
259 | goto end; | |
260 | } | |
261 | } | |
262 | ||
263 | end: | |
264 | /* Mi clean-up */ | |
265 | if (writer && mi_lttng_writer_destroy(writer)) { | |
266 | /* Preserve original error code */ | |
267 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
268 | } | |
269 | ||
270 | if (!opt_session_name) { | |
271 | free(session_name); | |
272 | } | |
273 | ||
274 | /* Overwrite ret if an error occurred during handle_command() */ | |
275 | ret = command_ret ? command_ret : ret; | |
276 | ||
277 | poptFreeContext(pc); | |
278 | return ret; | |
279 | } |