Commit | Line | Data |
---|---|---|
85b05318 JR |
1 | /* |
2 | * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #include <assert.h> | |
9 | #include <common/dynamic-buffer.h> | |
10 | #include <common/error.h> | |
85b05318 JR |
11 | #include <common/hashtable/hashtable.h> |
12 | #include <common/hashtable/utils.h> | |
0f7c2963 JR |
13 | #include <common/macros.h> |
14 | #include <common/mi-lttng.h> | |
85b05318 JR |
15 | #include <lttng/log-level-rule-internal.h> |
16 | #include <lttng/log-level-rule.h> | |
17 | #include <stdbool.h> | |
18 | #include <stdlib.h> | |
19 | ||
20 | static bool is_log_level_rule_exactly_type(const struct lttng_log_level_rule *rule) | |
21 | { | |
22 | enum lttng_log_level_rule_type type = | |
23 | lttng_log_level_rule_get_type(rule); | |
24 | ||
25 | return type == LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY; | |
26 | } | |
27 | ||
28 | static bool is_log_level_rule_at_least_as_severe_type(const struct lttng_log_level_rule *rule) | |
29 | { | |
30 | ||
31 | enum lttng_log_level_rule_type type = | |
32 | lttng_log_level_rule_get_type(rule); | |
33 | ||
34 | return type == LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS; | |
35 | } | |
36 | ||
37 | enum lttng_log_level_rule_type lttng_log_level_rule_get_type( | |
38 | const struct lttng_log_level_rule *rule) | |
39 | { | |
40 | return rule ? rule->type : LTTNG_LOG_LEVEL_RULE_TYPE_UNKNOWN; | |
41 | } | |
42 | ||
43 | struct lttng_log_level_rule *lttng_log_level_rule_exactly_create( | |
44 | int level) | |
45 | { | |
46 | struct lttng_log_level_rule *rule = NULL; | |
47 | ||
48 | rule = zmalloc(sizeof(struct lttng_log_level_rule)); | |
49 | if (!rule) { | |
50 | goto end; | |
51 | } | |
52 | ||
53 | rule->type = LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY; | |
54 | rule->level = level; | |
55 | ||
56 | end: | |
57 | return rule; | |
58 | } | |
59 | ||
60 | enum lttng_log_level_rule_status lttng_log_level_rule_exactly_get_level( | |
61 | const struct lttng_log_level_rule *rule, int *level) | |
62 | { | |
63 | enum lttng_log_level_rule_status status = | |
64 | LTTNG_LOG_LEVEL_RULE_STATUS_OK; | |
65 | ||
66 | if (!rule || !level || !is_log_level_rule_exactly_type(rule)) { | |
67 | status = LTTNG_LOG_LEVEL_RULE_STATUS_INVALID; | |
68 | goto end; | |
69 | } | |
70 | ||
71 | *level = rule->level; | |
72 | end: | |
73 | return status; | |
74 | } | |
75 | ||
76 | struct lttng_log_level_rule * | |
77 | lttng_log_level_rule_at_least_as_severe_as_create(int level) | |
78 | { | |
79 | struct lttng_log_level_rule *rule = NULL; | |
80 | ||
81 | rule = zmalloc(sizeof(struct lttng_log_level_rule)); | |
82 | if (!rule) { | |
83 | goto end; | |
84 | } | |
85 | ||
86 | rule->type = LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS; | |
87 | rule->level = level; | |
88 | ||
89 | end: | |
90 | return rule; | |
91 | } | |
92 | ||
93 | enum lttng_log_level_rule_status | |
94 | lttng_log_level_rule_at_least_as_severe_as_get_level( | |
95 | const struct lttng_log_level_rule *rule, int *level) | |
96 | { | |
97 | enum lttng_log_level_rule_status status = LTTNG_LOG_LEVEL_RULE_STATUS_OK; | |
98 | ||
99 | if (!rule || !level || | |
100 | !is_log_level_rule_at_least_as_severe_type(rule)) { | |
101 | status = LTTNG_LOG_LEVEL_RULE_STATUS_INVALID; | |
102 | goto end; | |
103 | } | |
104 | ||
105 | *level = rule->level; | |
106 | end: | |
107 | return status; | |
108 | } | |
109 | ||
110 | void lttng_log_level_rule_destroy(struct lttng_log_level_rule *log_level_rule) | |
111 | { | |
112 | free(log_level_rule); | |
113 | } | |
114 | ||
115 | LTTNG_HIDDEN | |
116 | ssize_t lttng_log_level_rule_create_from_payload( | |
117 | struct lttng_payload_view *view, | |
118 | struct lttng_log_level_rule **_rule) | |
119 | { | |
120 | ssize_t ret; | |
121 | size_t offset = 0; | |
122 | struct lttng_log_level_rule *rule = NULL; | |
123 | const struct lttng_log_level_rule_comm *comm = | |
124 | (const struct lttng_log_level_rule_comm *) | |
125 | view->buffer.data; | |
126 | ||
127 | offset += sizeof(*comm); | |
128 | ||
129 | if (!_rule) { | |
130 | ret = -1; | |
131 | goto end; | |
132 | } | |
133 | ||
134 | if (view->buffer.size < sizeof(*comm)) { | |
135 | ret = -1; | |
136 | goto end; | |
137 | } | |
138 | ||
139 | switch (comm->type) { | |
140 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
141 | rule = lttng_log_level_rule_exactly_create((int) comm->level); | |
142 | break; | |
143 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
144 | rule = lttng_log_level_rule_at_least_as_severe_as_create( | |
145 | (int) comm->level); | |
146 | break; | |
147 | default: | |
148 | abort(); | |
149 | } | |
150 | ||
151 | if (!rule) { | |
152 | ret = -1; | |
153 | goto end; | |
154 | } | |
155 | ||
156 | *_rule = rule; | |
157 | ret = offset; | |
158 | ||
159 | end: | |
160 | return ret; | |
161 | } | |
162 | ||
163 | LTTNG_HIDDEN | |
164 | int lttng_log_level_rule_serialize(const struct lttng_log_level_rule *rule, | |
165 | struct lttng_payload *payload) | |
166 | { | |
167 | int ret; | |
168 | struct lttng_log_level_rule_comm comm; | |
169 | ||
170 | ||
171 | if (!rule) { | |
172 | ret = 0; | |
173 | goto end; | |
174 | } | |
175 | ||
176 | comm.type = (int8_t) rule->type; | |
177 | comm.level = (int32_t) rule->level; | |
178 | ||
179 | DBG("Serializing log level rule of type %d", rule->type); | |
180 | ret = lttng_dynamic_buffer_append(&payload->buffer, &comm, | |
181 | sizeof(comm)); | |
182 | if (ret) { | |
183 | goto end; | |
184 | } | |
185 | ||
186 | end: | |
187 | return ret; | |
188 | } | |
189 | ||
190 | LTTNG_HIDDEN | |
191 | bool lttng_log_level_rule_is_equal(const struct lttng_log_level_rule *a, | |
192 | const struct lttng_log_level_rule *b) | |
193 | { | |
194 | bool is_equal = false; | |
195 | ||
196 | if (a == NULL && b == NULL) { | |
197 | /* Both are null. */ | |
198 | is_equal = true; | |
199 | goto end; | |
200 | } | |
201 | ||
202 | if (a == NULL || b == NULL) { | |
203 | /* One is NULL.*/ | |
204 | goto end; | |
205 | } | |
206 | ||
207 | if (a == b) { | |
208 | /* Same object.*/ | |
209 | is_equal = true; | |
210 | goto end; | |
211 | } | |
212 | ||
213 | if (a->type != b->type) { | |
214 | goto end; | |
215 | } | |
216 | ||
217 | if (a->level != b->level) { | |
218 | goto end; | |
219 | } | |
220 | ||
221 | is_equal = true; | |
222 | ||
223 | end: | |
224 | return is_equal; | |
225 | } | |
226 | ||
227 | LTTNG_HIDDEN | |
228 | struct lttng_log_level_rule *lttng_log_level_rule_copy( | |
229 | const struct lttng_log_level_rule *source) | |
230 | { | |
231 | struct lttng_log_level_rule *copy = NULL; | |
232 | ||
233 | assert(source); | |
234 | ||
235 | copy = zmalloc(sizeof(struct lttng_log_level_rule)); | |
236 | if (!copy) { | |
237 | goto end; | |
238 | } | |
239 | ||
240 | copy->type = source->type; | |
241 | copy->level = source->level; | |
242 | end: | |
243 | return copy; | |
244 | } | |
245 | ||
246 | LTTNG_HIDDEN | |
247 | void lttng_log_level_rule_to_loglevel( | |
248 | const struct lttng_log_level_rule *log_level_rule, | |
249 | enum lttng_loglevel_type *loglevel_type, | |
250 | int *loglevel_value) | |
251 | { | |
252 | assert(log_level_rule); | |
253 | ||
254 | switch (log_level_rule->type) { | |
255 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
256 | *loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; | |
257 | break; | |
258 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
259 | *loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; | |
260 | break; | |
261 | default: | |
262 | abort(); | |
263 | } | |
264 | ||
265 | *loglevel_value = log_level_rule->level; | |
266 | } | |
267 | ||
268 | LTTNG_HIDDEN | |
269 | unsigned long lttng_log_level_rule_hash( | |
270 | const struct lttng_log_level_rule *log_level_rule) | |
271 | { | |
272 | unsigned long hash; | |
273 | enum lttng_log_level_rule_status llr_status; | |
274 | int log_level_value; | |
275 | enum lttng_log_level_rule_type type; | |
276 | ||
277 | assert(log_level_rule); | |
278 | ||
279 | type = lttng_log_level_rule_get_type(log_level_rule); | |
280 | ||
281 | switch (type) { | |
282 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
283 | llr_status = lttng_log_level_rule_exactly_get_level( | |
284 | log_level_rule, &log_level_value); | |
285 | break; | |
286 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
287 | llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
288 | log_level_rule, &log_level_value); | |
289 | break; | |
290 | default: | |
291 | abort(); | |
292 | break; | |
293 | } | |
294 | ||
295 | assert(llr_status == LTTNG_LOG_LEVEL_RULE_STATUS_OK); | |
296 | ||
297 | hash = hash_key_ulong((void *) (unsigned long) type, lttng_ht_seed); | |
298 | ||
299 | hash ^= hash_key_ulong((void *) (unsigned long) log_level_value, | |
300 | lttng_ht_seed); | |
301 | ||
302 | return hash; | |
303 | } | |
0f7c2963 JR |
304 | |
305 | LTTNG_HIDDEN | |
306 | enum lttng_error_code lttng_log_level_rule_mi_serialize( | |
307 | const struct lttng_log_level_rule *rule, | |
308 | struct mi_writer *writer) | |
309 | { | |
310 | int ret; | |
311 | enum lttng_error_code ret_code; | |
312 | enum lttng_log_level_rule_status status; | |
313 | const char *element_str = NULL; | |
314 | int level; | |
315 | ||
316 | assert(rule); | |
317 | assert(writer); | |
318 | ||
319 | switch (lttng_log_level_rule_get_type(rule)) { | |
320 | case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: | |
321 | status = lttng_log_level_rule_exactly_get_level(rule, &level); | |
322 | element_str = mi_lttng_element_log_level_rule_exactly; | |
323 | break; | |
324 | case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: | |
325 | element_str = mi_lttng_element_log_level_rule_at_least_as_severe_as; | |
326 | status = lttng_log_level_rule_at_least_as_severe_as_get_level( | |
327 | rule, &level); | |
328 | break; | |
329 | default: | |
330 | abort(); | |
331 | break; | |
332 | } | |
333 | ||
334 | assert(status == LTTNG_LOG_LEVEL_RULE_STATUS_OK); | |
335 | ||
336 | /* Open log level rule element. */ | |
337 | ret = mi_lttng_writer_open_element( | |
338 | writer, mi_lttng_element_log_level_rule); | |
339 | if (ret) { | |
340 | goto mi_error; | |
341 | } | |
342 | ||
343 | /* Log level rule type element. */ | |
344 | ret = mi_lttng_writer_open_element(writer, element_str); | |
345 | if (ret) { | |
346 | goto mi_error; | |
347 | } | |
348 | ||
349 | /* Level. */ | |
350 | ret = mi_lttng_writer_write_element_signed_int( | |
351 | writer, mi_lttng_element_log_level_rule_level, level); | |
352 | if (ret) { | |
353 | goto mi_error; | |
354 | } | |
355 | ||
356 | /* Close log level rule type element. */ | |
357 | ret = mi_lttng_writer_close_element(writer); | |
358 | if (ret) { | |
359 | goto mi_error; | |
360 | } | |
361 | ||
362 | /* Close log level rule element. */ | |
363 | ret = mi_lttng_writer_close_element(writer); | |
364 | if (ret) { | |
365 | goto mi_error; | |
366 | } | |
367 | ||
368 | ret_code = LTTNG_OK; | |
369 | goto end; | |
370 | ||
371 | mi_error: | |
372 | ret_code = LTTNG_ERR_MI_IO_FAIL; | |
373 | end: | |
374 | return ret_code; | |
375 | } |