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259c2674 JD |
1 | /* |
2 | * Copyright (C) 2017 - Julien Desfossez <jdesfossez@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 | ||
18 | #define _LGPL_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 | #include <inttypes.h> | |
27 | #include <ctype.h> | |
28 | ||
29 | #include <common/sessiond-comm/sessiond-comm.h> | |
30 | #include <common/mi-lttng.h> | |
31 | ||
32 | #include "../command.h" | |
33 | #include <lttng/rotation.h> | |
34 | ||
35 | static char *opt_session_name; | |
36 | static struct mi_writer *writer; | |
37 | ||
3ae5c539 JD |
38 | #ifdef LTTNG_EMBED_HELP |
39 | static const char help_msg[] = | |
40 | #include <lttng-disable-rotation.1.h> | |
41 | ; | |
42 | #endif | |
43 | ||
259c2674 JD |
44 | enum { |
45 | OPT_HELP = 1, | |
46 | OPT_LIST_OPTIONS, | |
47 | OPT_TIMER, | |
90936dcf | 48 | OPT_SIZE, |
259c2674 JD |
49 | }; |
50 | ||
51 | static struct poptOption long_options[] = { | |
52 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
53 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
54 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, | |
55 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, | |
56 | {"timer", 0, POPT_ARG_NONE, 0, OPT_TIMER, 0, 0}, | |
90936dcf | 57 | {"size", 0, POPT_ARG_NONE, 0, OPT_SIZE, 0, 0}, |
259c2674 JD |
58 | {0, 0, 0, 0, 0, 0, 0} |
59 | }; | |
60 | ||
90936dcf | 61 | static int setup_rotate(char *session_name, uint64_t timer, uint64_t size) |
259c2674 JD |
62 | { |
63 | int ret = 0; | |
64 | struct lttng_rotation_schedule_attr *attr = NULL; | |
65 | ||
66 | attr = lttng_rotation_schedule_attr_create(); | |
67 | if (!attr) { | |
68 | goto error; | |
69 | } | |
70 | ||
71 | if (lttng_opt_mi) { | |
72 | /* Open rotation_schedule element */ | |
73 | ret = mi_lttng_writer_open_element(writer, | |
74 | config_element_rotation_schedule); | |
75 | if (ret) { | |
76 | goto error; | |
77 | } | |
78 | } | |
79 | ||
259c2674 JD |
80 | if (lttng_opt_mi) { |
81 | ret = mi_lttng_writer_write_element_string(writer, | |
82 | mi_lttng_element_session_name, session_name); | |
83 | if (ret) { | |
84 | goto error; | |
85 | } | |
86 | } | |
87 | ||
88 | if (timer == -1ULL) { | |
89 | lttng_rotation_schedule_attr_set_timer_period(attr, timer); | |
90 | MSG("Disabling rotation timer on session %s", session_name); | |
91 | } | |
90936dcf JD |
92 | if (size == -1ULL) { |
93 | lttng_rotation_schedule_attr_set_size(attr, size); | |
94 | MSG("Disabling rotation based on size on session %s", session_name); | |
95 | } | |
259c2674 | 96 | |
dbd512ea | 97 | ret = lttng_rotation_set_schedule(session_name, attr); |
259c2674 JD |
98 | if (ret) { |
99 | ERR("%s", lttng_strerror(ret)); | |
100 | if (lttng_opt_mi) { | |
101 | ret = mi_lttng_writer_write_element_string(writer, | |
102 | mi_lttng_element_rotate_status, "error"); | |
103 | if (ret) { | |
104 | goto end; | |
105 | } | |
106 | /* Close rotation_schedule element */ | |
107 | ret = mi_lttng_writer_close_element(writer); | |
108 | if (ret) { | |
109 | goto end; | |
110 | } | |
111 | } | |
112 | goto error; | |
113 | } | |
114 | ||
115 | if (lttng_opt_mi) { | |
116 | ret = mi_lttng_writer_write_element_string(writer, | |
117 | mi_lttng_element_rotate_status, "success"); | |
118 | if (ret) { | |
119 | goto end; | |
120 | } | |
121 | ||
122 | /* Close rotation_schedule element */ | |
123 | ret = mi_lttng_writer_close_element(writer); | |
124 | if (ret) { | |
125 | goto end; | |
126 | } | |
127 | } | |
128 | ||
129 | ret = 0; | |
130 | goto end; | |
131 | ||
132 | error: | |
133 | ret = -1; | |
134 | end: | |
135 | return ret; | |
136 | } | |
137 | ||
138 | /* | |
139 | * cmd_disable_rotation | |
140 | * | |
141 | * The 'enable-rotation <options>' first level command | |
142 | */ | |
143 | int cmd_disable_rotation(int argc, const char **argv) | |
144 | { | |
145 | int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1; | |
146 | int popt_ret; | |
147 | static poptContext pc; | |
148 | char *session_name = NULL; | |
149 | bool free_session_name = false; | |
90936dcf | 150 | uint64_t timer = 0, size = 0; |
259c2674 JD |
151 | |
152 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
153 | popt_ret = poptReadDefaultConfig(pc, 0); | |
154 | if (popt_ret) { | |
155 | ret = CMD_ERROR; | |
156 | ERR("poptReadDefaultConfig"); | |
157 | goto end; | |
158 | } | |
159 | ||
160 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
161 | switch (opt) { | |
162 | case OPT_HELP: | |
163 | SHOW_HELP(); | |
164 | goto end; | |
165 | case OPT_LIST_OPTIONS: | |
166 | list_cmd_options(stdout, long_options); | |
167 | goto end; | |
168 | case OPT_TIMER: | |
169 | timer = -1ULL; | |
170 | break; | |
90936dcf JD |
171 | case OPT_SIZE: |
172 | size = -1ULL; | |
173 | break; | |
259c2674 JD |
174 | default: |
175 | ret = CMD_UNDEFINED; | |
176 | goto end; | |
177 | } | |
178 | } | |
179 | ||
180 | if (opt_session_name == NULL) { | |
181 | session_name = get_session_name(); | |
182 | if (session_name == NULL) { | |
183 | goto end; | |
184 | } | |
185 | free_session_name = true; | |
186 | } else { | |
187 | session_name = opt_session_name; | |
188 | } | |
189 | ||
190 | /* Mi check */ | |
191 | if (lttng_opt_mi) { | |
192 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
193 | if (!writer) { | |
194 | ret = -LTTNG_ERR_NOMEM; | |
195 | goto end; | |
196 | } | |
197 | ||
198 | /* Open command element */ | |
199 | ret = mi_lttng_writer_command_open(writer, | |
200 | mi_lttng_element_command_disable_rotation); | |
201 | if (ret) { | |
202 | ret = CMD_ERROR; | |
203 | goto end; | |
204 | } | |
205 | ||
206 | /* Open output element */ | |
207 | ret = mi_lttng_writer_open_element(writer, | |
208 | mi_lttng_element_command_output); | |
209 | if (ret) { | |
210 | ret = CMD_ERROR; | |
211 | goto end; | |
212 | } | |
213 | } | |
214 | ||
215 | /* No config options, just rotate the session now */ | |
90936dcf JD |
216 | if (timer == 0 && size == 0) { |
217 | ERR("Missing timer period (--timer) or size limit (--size) option"); | |
259c2674 JD |
218 | success = 0; |
219 | command_ret = -1; | |
220 | } else { | |
90936dcf | 221 | command_ret = setup_rotate(session_name, timer, size); |
259c2674 JD |
222 | } |
223 | ||
224 | if (command_ret) { | |
225 | ERR("%s", lttng_strerror(command_ret)); | |
226 | success = 0; | |
227 | } | |
228 | ||
229 | /* Mi closing */ | |
230 | if (lttng_opt_mi) { | |
231 | /* Close output element */ | |
232 | ret = mi_lttng_writer_close_element(writer); | |
233 | if (ret) { | |
234 | goto end; | |
235 | } | |
236 | ||
237 | /* Success ? */ | |
238 | ret = mi_lttng_writer_write_element_bool(writer, | |
239 | mi_lttng_element_command_success, success); | |
240 | if (ret) { | |
241 | ret = CMD_ERROR; | |
242 | goto end; | |
243 | } | |
244 | ||
245 | /* Command element close */ | |
246 | ret = mi_lttng_writer_command_close(writer); | |
247 | if (ret) { | |
248 | ret = CMD_ERROR; | |
249 | goto end; | |
250 | } | |
251 | } | |
252 | ||
253 | end: | |
254 | /* Mi clean-up */ | |
255 | if (writer && mi_lttng_writer_destroy(writer)) { | |
256 | /* Preserve original error code */ | |
257 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; | |
258 | } | |
259 | ||
260 | /* Overwrite ret if an error occurred with start_tracing */ | |
261 | ret = command_ret ? command_ret : ret; | |
262 | poptFreeContext(pc); | |
263 | if (free_session_name) { | |
264 | free(session_name); | |
265 | } | |
266 | return ret; | |
267 | } |