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Commit | Line | Data |
---|---|---|
2da06d3c MY |
1 | /* |
2 | * lsfd-unkn.c - handle associations opening unknown objects | |
3 | * | |
4 | * Copyright (C) 2021 Red Hat, Inc. All rights reserved. | |
5 | * Written by Masatake YAMATO <yamato@redhat.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it would be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software Foundation, | |
19 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
bc808368 | 22 | #include <linux/bpf.h> |
bc808368 | 23 | #include <sys/syscall.h> |
ef4fb7fa MY |
24 | #include <sys/timerfd.h> |
25 | #include <time.h> | |
26 | ||
b22d1e54 | 27 | #include "signames.h" |
765b4a14 | 28 | #include "timeutils.h" |
2da06d3c MY |
29 | |
30 | #include "lsfd.h" | |
bf6645dc | 31 | #include "lsfd-pidfd.h" |
2da06d3c | 32 | |
bc808368 MY |
33 | #define offsetofend(TYPE, MEMBER) \ |
34 | (offsetof(TYPE, MEMBER) + sizeof_member(TYPE, MEMBER)) | |
35 | ||
9a9c96b7 MY |
36 | struct unkn { |
37 | struct file file; | |
54a06438 | 38 | const struct anon_ops *anon_ops; |
9a9c96b7 MY |
39 | void *anon_data; |
40 | }; | |
41 | ||
42 | struct anon_ops { | |
4cd4ed18 | 43 | const char *class; |
007e405b | 44 | bool (*probe)(const char *); |
9a9c96b7 | 45 | char * (*get_name)(struct unkn *); |
553a6817 MY |
46 | /* Return true is handled the column. */ |
47 | bool (*fill_column)(struct proc *, | |
48 | struct unkn *, | |
49 | struct libscols_line *, | |
50 | int, | |
51 | size_t, | |
52 | char **str); | |
9a9c96b7 MY |
53 | void (*init)(struct unkn *); |
54 | void (*free)(struct unkn *); | |
55 | int (*handle_fdinfo)(struct unkn *, const char *, const char *); | |
d4fea4d0 MY |
56 | void (*attach_xinfo)(struct unkn *); |
57 | const struct ipc_class *ipc_class; | |
9a9c96b7 MY |
58 | }; |
59 | ||
007e405b | 60 | static const struct anon_ops *anon_probe(const char *); |
9a9c96b7 | 61 | |
4cd4ed18 MY |
62 | static char * anon_get_class(struct unkn *unkn) |
63 | { | |
64 | char *name; | |
65 | ||
66 | if (unkn->anon_ops->class) | |
e0dc84da | 67 | return xstrdup(unkn->anon_ops->class); |
4cd4ed18 MY |
68 | |
69 | /* See unkn_init_content() */ | |
70 | name = ((struct file *)unkn)->name + 11; | |
71 | /* Does it have the form anon_inode:[class]? */ | |
72 | if (*name == '[') { | |
73 | size_t len = strlen(name + 1); | |
74 | if (*(name + 1 + len - 1) == ']') | |
75 | return strndup(name + 1, len - 1); | |
76 | } | |
77 | ||
e0dc84da | 78 | return xstrdup(name); |
4cd4ed18 MY |
79 | } |
80 | ||
553a6817 | 81 | static bool unkn_fill_column(struct proc *proc, |
a9e36b09 | 82 | struct file *file, |
2da06d3c MY |
83 | struct libscols_line *ln, |
84 | int column_id, | |
85 | size_t column_index) | |
86 | { | |
a500de34 | 87 | char *str = NULL; |
9a9c96b7 | 88 | struct unkn *unkn = (struct unkn *)file; |
a500de34 | 89 | |
2da06d3c | 90 | switch(column_id) { |
9a9c96b7 MY |
91 | case COL_NAME: |
92 | if (unkn->anon_ops && unkn->anon_ops->get_name) { | |
93 | str = unkn->anon_ops->get_name(unkn); | |
94 | if (str) | |
95 | break; | |
96 | } | |
97 | return false; | |
2da06d3c | 98 | case COL_TYPE: |
be019f66 MY |
99 | if (!unkn->anon_ops) |
100 | return false; | |
101 | /* FALL THROUGH */ | |
4cd4ed18 MY |
102 | case COL_AINODECLASS: |
103 | if (unkn->anon_ops) { | |
104 | str = anon_get_class(unkn); | |
105 | break; | |
106 | } | |
107 | return false; | |
618db964 | 108 | case COL_SOURCE: |
9a9c96b7 | 109 | if (unkn->anon_ops) { |
e0dc84da | 110 | str = xstrdup("anon_inodefs"); |
a500de34 MY |
111 | break; |
112 | } | |
113 | return false; | |
2da06d3c | 114 | default: |
553a6817 MY |
115 | if (unkn->anon_ops && unkn->anon_ops->fill_column) { |
116 | if (unkn->anon_ops->fill_column(proc, unkn, ln, | |
117 | column_id, column_index, &str)) | |
118 | break; | |
119 | } | |
2da06d3c MY |
120 | return false; |
121 | } | |
a500de34 MY |
122 | |
123 | if (!str) | |
124 | err(EXIT_FAILURE, _("failed to add output data")); | |
125 | if (scols_line_refer_data(ln, column_index, str)) | |
126 | err(EXIT_FAILURE, _("failed to add output data")); | |
127 | return true; | |
2da06d3c MY |
128 | } |
129 | ||
d4fea4d0 MY |
130 | static void unkn_attach_xinfo(struct file *file) |
131 | { | |
132 | struct unkn *unkn = (struct unkn *)file; | |
133 | if (unkn->anon_ops && unkn->anon_ops->attach_xinfo) | |
134 | unkn->anon_ops->attach_xinfo(unkn); | |
135 | } | |
136 | ||
137 | static const struct ipc_class *unkn_get_ipc_class(struct file *file) | |
138 | { | |
139 | struct unkn *unkn = (struct unkn *)file; | |
140 | ||
141 | if (unkn->anon_ops && unkn->anon_ops->ipc_class) | |
142 | return unkn->anon_ops->ipc_class; | |
143 | return NULL; | |
144 | } | |
145 | ||
9a9c96b7 MY |
146 | static void unkn_init_content(struct file *file) |
147 | { | |
148 | struct unkn *unkn = (struct unkn *)file; | |
149 | ||
150 | assert(file); | |
151 | unkn->anon_ops = NULL; | |
152 | unkn->anon_data = NULL; | |
153 | ||
154 | if (major(file->stat.st_dev) == 0 | |
155 | && strncmp(file->name, "anon_inode:", 11) == 0) { | |
ba8c749f MY |
156 | const char *rest = file->name + 11; |
157 | ||
007e405b | 158 | unkn->anon_ops = anon_probe(rest); |
ba8c749f | 159 | |
9a9c96b7 MY |
160 | if (unkn->anon_ops->init) |
161 | unkn->anon_ops->init(unkn); | |
162 | } | |
163 | } | |
164 | ||
165 | static void unkn_content_free(struct file *file) | |
166 | { | |
167 | struct unkn *unkn = (struct unkn *)file; | |
168 | ||
169 | assert(file); | |
170 | if (unkn->anon_ops && unkn->anon_ops->free) | |
171 | unkn->anon_ops->free((struct unkn *)file); | |
172 | } | |
173 | ||
174 | static int unkn_handle_fdinfo(struct file *file, const char *key, const char *value) | |
175 | { | |
176 | struct unkn *unkn = (struct unkn *)file; | |
177 | ||
178 | assert(file); | |
179 | if (unkn->anon_ops && unkn->anon_ops->handle_fdinfo) | |
180 | return unkn->anon_ops->handle_fdinfo(unkn, key, value); | |
181 | return 0; /* Should be handled in parents */ | |
182 | } | |
183 | ||
ba8c749f MY |
184 | /* |
185 | * pidfd | |
186 | */ | |
ba8c749f | 187 | |
007e405b MY |
188 | static bool anon_pidfd_probe(const char *str) |
189 | { | |
4a3d70fe | 190 | return strncmp(str, "[pidfd]", 7) == 0; |
007e405b MY |
191 | } |
192 | ||
ba8c749f MY |
193 | static char *anon_pidfd_get_name(struct unkn *unkn) |
194 | { | |
bf6645dc XR |
195 | struct pidfd_data *data = (struct pidfd_data *)unkn->anon_data; |
196 | ||
197 | return pidfd_get_name(data); | |
ba8c749f MY |
198 | } |
199 | ||
200 | static void anon_pidfd_init(struct unkn *unkn) | |
201 | { | |
bf6645dc | 202 | unkn->anon_data = xcalloc(1, sizeof(struct pidfd_data)); |
ba8c749f MY |
203 | } |
204 | ||
205 | static void anon_pidfd_free(struct unkn *unkn) | |
206 | { | |
bf6645dc | 207 | struct pidfd_data *data = (struct pidfd_data *)unkn->anon_data; |
ba8c749f | 208 | |
bf6645dc | 209 | pidfd_free(data); |
ba8c749f MY |
210 | free(data); |
211 | } | |
212 | ||
213 | static int anon_pidfd_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) | |
214 | { | |
bf6645dc XR |
215 | return pidfd_handle_fdinfo((struct pidfd_data *)unkn->anon_data, |
216 | key, value); | |
ba8c749f MY |
217 | } |
218 | ||
553a6817 MY |
219 | static bool anon_pidfd_fill_column(struct proc *proc __attribute__((__unused__)), |
220 | struct unkn *unkn, | |
221 | struct libscols_line *ln __attribute__((__unused__)), | |
222 | int column_id, | |
223 | size_t column_index __attribute__((__unused__)), | |
224 | char **str) | |
225 | { | |
bf6645dc XR |
226 | return pidfd_fill_column((struct pidfd_data *)unkn->anon_data, |
227 | column_id, | |
228 | str); | |
553a6817 MY |
229 | } |
230 | ||
54a06438 | 231 | static const struct anon_ops anon_pidfd_ops = { |
4cd4ed18 | 232 | .class = "pidfd", |
007e405b | 233 | .probe = anon_pidfd_probe, |
ba8c749f | 234 | .get_name = anon_pidfd_get_name, |
553a6817 | 235 | .fill_column = anon_pidfd_fill_column, |
ba8c749f MY |
236 | .init = anon_pidfd_init, |
237 | .free = anon_pidfd_free, | |
238 | .handle_fdinfo = anon_pidfd_handle_fdinfo, | |
239 | }; | |
240 | ||
8c2ca9c9 MY |
241 | /* |
242 | * eventfd | |
243 | */ | |
244 | struct anon_eventfd_data { | |
245 | int id; | |
e283500c | 246 | struct unkn *backptr; |
d4fea4d0 MY |
247 | struct ipc_endpoint endpoint; |
248 | }; | |
249 | ||
250 | struct eventfd_ipc { | |
251 | struct ipc ipc; | |
252 | int id; | |
253 | }; | |
254 | ||
255 | static unsigned int anon_eventfd_get_hash(struct file *file) | |
256 | { | |
257 | struct unkn *unkn = (struct unkn *)file; | |
258 | struct anon_eventfd_data *data = (struct anon_eventfd_data *)unkn->anon_data; | |
259 | ||
260 | return (unsigned int)data->id; | |
261 | } | |
262 | ||
263 | static bool anon_eventfd_is_suitable_ipc(struct ipc *ipc, struct file *file) | |
264 | { | |
265 | struct unkn *unkn = (struct unkn *)file; | |
266 | struct anon_eventfd_data *data = (struct anon_eventfd_data *)unkn->anon_data; | |
267 | ||
268 | return ((struct eventfd_ipc *)ipc)->id == data->id; | |
269 | } | |
270 | ||
271 | static const struct ipc_class anon_eventfd_ipc_class = { | |
272 | .size = sizeof(struct eventfd_ipc), | |
273 | .get_hash = anon_eventfd_get_hash, | |
274 | .is_suitable_ipc = anon_eventfd_is_suitable_ipc, | |
275 | .free = NULL, | |
8c2ca9c9 MY |
276 | }; |
277 | ||
278 | static bool anon_eventfd_probe(const char *str) | |
279 | { | |
dd458e65 | 280 | return strncmp(str, "[eventfd]", 9) == 0; |
8c2ca9c9 MY |
281 | } |
282 | ||
283 | static char *anon_eventfd_get_name(struct unkn *unkn) | |
284 | { | |
285 | char *str = NULL; | |
286 | struct anon_eventfd_data *data = (struct anon_eventfd_data *)unkn->anon_data; | |
287 | ||
288 | xasprintf(&str, "id=%d", data->id); | |
289 | return str; | |
290 | } | |
291 | ||
292 | static void anon_eventfd_init(struct unkn *unkn) | |
293 | { | |
d4fea4d0 MY |
294 | struct anon_eventfd_data *data = xcalloc(1, sizeof(struct anon_eventfd_data)); |
295 | init_endpoint(&data->endpoint); | |
296 | data->backptr = unkn; | |
297 | unkn->anon_data = data; | |
8c2ca9c9 MY |
298 | } |
299 | ||
300 | static void anon_eventfd_free(struct unkn *unkn) | |
301 | { | |
302 | free(unkn->anon_data); | |
303 | } | |
304 | ||
d4fea4d0 MY |
305 | static void anon_eventfd_attach_xinfo(struct unkn *unkn) |
306 | { | |
307 | struct anon_eventfd_data *data = (struct anon_eventfd_data *)unkn->anon_data; | |
308 | unsigned int hash; | |
309 | struct ipc *ipc = get_ipc(&unkn->file); | |
310 | if (ipc) | |
311 | goto link; | |
312 | ||
313 | ipc = new_ipc(&anon_eventfd_ipc_class); | |
314 | ((struct eventfd_ipc *)ipc)->id = data->id; | |
315 | ||
316 | hash = anon_eventfd_get_hash(&unkn->file); | |
317 | add_ipc(ipc, hash); | |
318 | ||
319 | link: | |
320 | add_endpoint(&data->endpoint, ipc); | |
321 | } | |
322 | ||
8c2ca9c9 MY |
323 | static int anon_eventfd_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) |
324 | { | |
325 | if (strcmp(key, "eventfd-id") == 0) { | |
326 | int64_t id; | |
327 | ||
328 | int rc = ul_strtos64(value, &id, 10); | |
329 | if (rc < 0) | |
330 | return 0; | |
331 | ((struct anon_eventfd_data *)unkn->anon_data)->id = (int)id; | |
332 | return 1; | |
333 | } | |
334 | return 0; | |
335 | } | |
336 | ||
d4fea4d0 MY |
337 | static inline char *anon_eventfd_data_xstrendpoint(struct file *file) |
338 | { | |
339 | char *str = NULL; | |
340 | xasprintf(&str, "%d,%s,%d", | |
341 | file->proc->pid, file->proc->command, file->association); | |
342 | return str; | |
343 | } | |
344 | ||
8c2ca9c9 MY |
345 | static bool anon_eventfd_fill_column(struct proc *proc __attribute__((__unused__)), |
346 | struct unkn *unkn, | |
347 | struct libscols_line *ln __attribute__((__unused__)), | |
348 | int column_id, | |
349 | size_t column_index __attribute__((__unused__)), | |
350 | char **str) | |
351 | { | |
352 | struct anon_eventfd_data *data = (struct anon_eventfd_data *)unkn->anon_data; | |
353 | ||
354 | switch(column_id) { | |
355 | case COL_EVENTFD_ID: | |
356 | xasprintf(str, "%d", data->id); | |
357 | return true; | |
d4fea4d0 MY |
358 | case COL_ENDPOINTS: { |
359 | struct list_head *e; | |
360 | char *estr; | |
361 | foreach_endpoint(e, data->endpoint) { | |
362 | struct anon_eventfd_data *other = list_entry(e, | |
363 | struct anon_eventfd_data, | |
364 | endpoint.endpoints); | |
365 | if (data == other) | |
366 | continue; | |
367 | if (*str) | |
368 | xstrputc(str, '\n'); | |
369 | estr = anon_eventfd_data_xstrendpoint(&other->backptr->file); | |
370 | xstrappend(str, estr); | |
371 | free(estr); | |
372 | } | |
373 | if (!*str) | |
374 | return false; | |
375 | return true; | |
376 | } | |
8c2ca9c9 MY |
377 | default: |
378 | return false; | |
379 | } | |
380 | } | |
381 | ||
382 | static const struct anon_ops anon_eventfd_ops = { | |
383 | .class = "eventfd", | |
384 | .probe = anon_eventfd_probe, | |
385 | .get_name = anon_eventfd_get_name, | |
386 | .fill_column = anon_eventfd_fill_column, | |
387 | .init = anon_eventfd_init, | |
388 | .free = anon_eventfd_free, | |
389 | .handle_fdinfo = anon_eventfd_handle_fdinfo, | |
d4fea4d0 MY |
390 | .attach_xinfo = anon_eventfd_attach_xinfo, |
391 | .ipc_class = &anon_eventfd_ipc_class, | |
8c2ca9c9 MY |
392 | }; |
393 | ||
c2e2dd60 MY |
394 | /* |
395 | * eventpoll | |
396 | */ | |
397 | struct anon_eventpoll_data { | |
398 | size_t count; | |
399 | int *tfds; | |
da901314 | 400 | struct list_head siblings; |
c2e2dd60 MY |
401 | }; |
402 | ||
c2e2dd60 MY |
403 | static bool anon_eventpoll_probe(const char *str) |
404 | { | |
405 | return strncmp(str, "[eventpoll]", 11) == 0; | |
406 | } | |
407 | ||
408 | static void anon_eventpoll_init(struct unkn *unkn) | |
409 | { | |
da901314 MY |
410 | struct anon_eventpoll_data *data = xcalloc(1, sizeof(struct anon_eventpoll_data)); |
411 | INIT_LIST_HEAD(&data->siblings); | |
412 | unkn->anon_data = data; | |
c2e2dd60 MY |
413 | } |
414 | ||
415 | static void anon_eventpoll_free(struct unkn *unkn) | |
416 | { | |
417 | struct anon_eventpoll_data *data = unkn->anon_data; | |
dd458e65 MY |
418 | free(data->tfds); |
419 | free(data); | |
c2e2dd60 MY |
420 | } |
421 | ||
422 | static int anon_eventpoll_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) | |
423 | { | |
424 | struct anon_eventpoll_data *data; | |
425 | if (strcmp(key, "tfd") == 0) { | |
426 | unsigned long tfd; | |
427 | char *end = NULL; | |
428 | ||
429 | errno = 0; | |
430 | tfd = strtoul(value, &end, 0); | |
431 | if (errno != 0) | |
432 | return 0; /* ignore -- parse failed */ | |
433 | ||
434 | data = (struct anon_eventpoll_data *)unkn->anon_data; | |
dd458e65 | 435 | data->tfds = xreallocarray(data->tfds, ++data->count, sizeof(int)); |
c2e2dd60 MY |
436 | data->tfds[data->count - 1] = (int)tfd; |
437 | return 1; | |
438 | } | |
439 | return 0; | |
440 | } | |
441 | ||
dd458e65 | 442 | static int intcmp(const void *a, const void *b) |
c2e2dd60 MY |
443 | { |
444 | int ai = *(int *)a; | |
445 | int bi = *(int *)b; | |
446 | ||
447 | return ai - bi; | |
448 | } | |
449 | ||
450 | static void anon_eventpoll_attach_xinfo(struct unkn *unkn) | |
451 | { | |
452 | struct anon_eventpoll_data *data = (struct anon_eventpoll_data *)unkn->anon_data; | |
baef2659 TW |
453 | if (data->count > 0) { |
454 | qsort(data->tfds, data->count, sizeof(data->tfds[0]), | |
455 | intcmp); | |
da901314 MY |
456 | list_add_tail(&data->siblings, |
457 | &unkn->file.proc->eventpolls); | |
baef2659 | 458 | } |
c2e2dd60 MY |
459 | } |
460 | ||
461 | static char *anon_eventpoll_make_tfds_string(struct anon_eventpoll_data *data, | |
92e0e017 MY |
462 | const char *prefix, |
463 | const char sep) | |
c2e2dd60 MY |
464 | { |
465 | char *str = prefix? xstrdup(prefix): NULL; | |
466 | ||
467 | char buf[256]; | |
468 | for (size_t i = 0; i < data->count; i++) { | |
469 | size_t offset = 0; | |
470 | ||
471 | if (i > 0) { | |
92e0e017 | 472 | buf[0] = sep; |
c2e2dd60 MY |
473 | offset = 1; |
474 | } | |
475 | snprintf(buf + offset, sizeof(buf) - offset, "%d", data->tfds[i]); | |
476 | xstrappend(&str, buf); | |
477 | } | |
478 | return str; | |
479 | } | |
480 | ||
481 | static char *anon_eventpoll_get_name(struct unkn *unkn) | |
482 | { | |
dd458e65 | 483 | return anon_eventpoll_make_tfds_string((struct anon_eventpoll_data *)unkn->anon_data, |
92e0e017 | 484 | "tfds=", ','); |
c2e2dd60 MY |
485 | } |
486 | ||
487 | static bool anon_eventpoll_fill_column(struct proc *proc __attribute__((__unused__)), | |
488 | struct unkn *unkn, | |
489 | struct libscols_line *ln __attribute__((__unused__)), | |
490 | int column_id, | |
491 | size_t column_index __attribute__((__unused__)), | |
492 | char **str) | |
493 | { | |
494 | struct anon_eventpoll_data *data = (struct anon_eventpoll_data *)unkn->anon_data; | |
495 | ||
496 | switch(column_id) { | |
497 | case COL_EVENTPOLL_TFDS: | |
92e0e017 | 498 | *str =anon_eventpoll_make_tfds_string(data, NULL, '\n'); |
c2e2dd60 MY |
499 | if (*str) |
500 | return true; | |
501 | break; | |
502 | } | |
503 | ||
504 | return false; | |
505 | } | |
506 | ||
507 | static const struct anon_ops anon_eventpoll_ops = { | |
508 | .class = "eventpoll", | |
509 | .probe = anon_eventpoll_probe, | |
510 | .get_name = anon_eventpoll_get_name, | |
511 | .fill_column = anon_eventpoll_fill_column, | |
512 | .init = anon_eventpoll_init, | |
513 | .free = anon_eventpoll_free, | |
514 | .handle_fdinfo = anon_eventpoll_handle_fdinfo, | |
515 | .attach_xinfo = anon_eventpoll_attach_xinfo, | |
516 | }; | |
517 | ||
da901314 MY |
518 | static int numcomp(const void *a, const void *b) |
519 | { | |
520 | return *(int *)a - *(int *)b; | |
521 | } | |
522 | ||
523 | bool is_multiplexed_by_eventpoll(int fd, struct list_head *eventpolls) | |
524 | { | |
525 | struct list_head *t; | |
526 | list_for_each (t, eventpolls) { | |
527 | struct anon_eventpoll_data *data = list_entry(t, struct anon_eventpoll_data, siblings); | |
528 | if (data->count) { | |
529 | if (bsearch(&fd, data->tfds, | |
7ce88537 | 530 | data->count, sizeof(data->tfds[0]), |
da901314 MY |
531 | numcomp)) |
532 | return true; | |
533 | } | |
534 | } | |
535 | return false; | |
536 | } | |
537 | ||
188b7d64 MY |
538 | /* |
539 | * timerfd | |
540 | */ | |
541 | struct anon_timerfd_data { | |
542 | int clockid; | |
543 | struct itimerspec itimerspec; | |
544 | }; | |
545 | ||
546 | static bool anon_timerfd_probe(const char *str) | |
547 | { | |
548 | return strncmp(str, "[timerfd]", 9) == 0; | |
549 | } | |
550 | ||
551 | static void anon_timerfd_init(struct unkn *unkn) | |
552 | { | |
553 | unkn->anon_data = xcalloc(1, sizeof(struct anon_timerfd_data)); | |
554 | } | |
555 | ||
556 | static void anon_timerfd_free(struct unkn *unkn) | |
557 | { | |
558 | struct anon_timerfd_data *data = unkn->anon_data; | |
559 | free(data); | |
560 | } | |
561 | ||
562 | static int anon_timerfd_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) | |
563 | { | |
564 | struct anon_timerfd_data *data = (struct anon_timerfd_data *)unkn->anon_data; | |
565 | ||
566 | if (strcmp(key, "clockid") == 0) { | |
567 | unsigned long clockid; | |
568 | char *end = NULL; | |
569 | ||
570 | errno = 0; | |
571 | clockid = strtoul(value, &end, 0); | |
572 | if (errno != 0) | |
573 | return 0; /* ignore -- parse failed */ | |
574 | if (*end != '\0') | |
575 | return 0; /* ignore -- garbage remains. */ | |
576 | ||
577 | data->clockid = clockid; | |
578 | return 1; | |
579 | } else { | |
580 | struct timespec *t; | |
581 | uint64_t tv_sec; | |
582 | uint64_t tv_nsec; | |
583 | ||
584 | if (strcmp(key, "it_value") == 0) | |
585 | t = &data->itimerspec.it_value; | |
586 | else if (strcmp(key, "it_interval") == 0) | |
587 | t = &data->itimerspec.it_interval; | |
588 | else | |
589 | return 0; | |
590 | ||
591 | if (sscanf(value, "(%"SCNu64", %"SCNu64")", | |
592 | &tv_sec, &tv_nsec) == 2) { | |
593 | t->tv_sec = (time_t)tv_sec; | |
594 | t->tv_nsec = (long)tv_nsec; | |
595 | return 1; | |
596 | } | |
597 | ||
598 | return 0; | |
599 | } | |
600 | } | |
601 | ||
188b7d64 MY |
602 | static const char *anon_timerfd_decode_clockid(int clockid) |
603 | { | |
604 | switch (clockid) { | |
605 | case CLOCK_REALTIME: | |
606 | return "realtime"; | |
607 | case CLOCK_MONOTONIC: | |
608 | return "monotonic"; | |
609 | case CLOCK_BOOTTIME: | |
610 | return "boottime"; | |
611 | case CLOCK_REALTIME_ALARM: | |
612 | return "realtime-alarm"; | |
613 | case CLOCK_BOOTTIME_ALARM: | |
614 | return "boottime-alarm"; | |
615 | default: | |
616 | return "unknown"; | |
617 | } | |
618 | } | |
619 | ||
620 | static void anon_timerfd_render_timespec_string(char *buf, size_t size, | |
621 | const char *prefix, | |
622 | const struct timespec *t) | |
623 | { | |
624 | snprintf(buf, size, "%s%llu.%09ld", | |
625 | prefix? prefix: "", | |
626 | (unsigned long long)t->tv_sec, t->tv_nsec); | |
627 | } | |
628 | ||
629 | static char *anon_timerfd_get_name(struct unkn *unkn) | |
630 | { | |
631 | char *str = NULL; | |
632 | ||
633 | struct anon_timerfd_data *data = (struct anon_timerfd_data *)unkn->anon_data; | |
634 | const struct timespec *exp; | |
635 | const struct timespec *ival; | |
636 | ||
637 | const char *clockid_name; | |
638 | char exp_buf[BUFSIZ] = {'\0'}; | |
639 | char ival_buf[BUFSIZ] = {'\0'}; | |
640 | ||
641 | clockid_name = anon_timerfd_decode_clockid(data->clockid); | |
642 | ||
643 | exp = &data->itimerspec.it_value; | |
765b4a14 | 644 | if (is_timespecset(exp)) |
188b7d64 MY |
645 | anon_timerfd_render_timespec_string(exp_buf, sizeof(exp_buf), |
646 | " remaining=", exp); | |
647 | ||
648 | ival = &data->itimerspec.it_interval; | |
765b4a14 | 649 | if (is_timespecset(ival)) |
188b7d64 MY |
650 | anon_timerfd_render_timespec_string(ival_buf, sizeof(ival_buf), |
651 | " interval=", ival); | |
652 | ||
653 | xasprintf(&str, "clockid=%s%s%s", clockid_name, exp_buf, ival_buf); | |
654 | return str; | |
655 | } | |
656 | ||
657 | static bool anon_timerfd_fill_column(struct proc *proc __attribute__((__unused__)), | |
658 | struct unkn *unkn, | |
659 | struct libscols_line *ln __attribute__((__unused__)), | |
660 | int column_id, | |
661 | size_t column_index __attribute__((__unused__)), | |
662 | char **str) | |
663 | { | |
664 | struct anon_timerfd_data *data = (struct anon_timerfd_data *)unkn->anon_data; | |
665 | char buf[BUFSIZ] = {'\0'}; | |
666 | ||
667 | switch(column_id) { | |
668 | case COL_TIMERFD_CLOCKID: | |
669 | *str = xstrdup(anon_timerfd_decode_clockid(data->clockid)); | |
670 | return true; | |
671 | case COL_TIMERFD_INTERVAL: | |
672 | anon_timerfd_render_timespec_string(buf, sizeof(buf), NULL, | |
673 | &data->itimerspec.it_interval); | |
674 | *str = xstrdup(buf); | |
675 | return true; | |
676 | case COL_TIMERFD_REMAINING: | |
677 | anon_timerfd_render_timespec_string(buf, sizeof(buf), NULL, | |
678 | &data->itimerspec.it_value); | |
679 | *str = xstrdup(buf); | |
680 | return true; | |
681 | } | |
682 | ||
683 | return false; | |
684 | } | |
685 | ||
686 | static const struct anon_ops anon_timerfd_ops = { | |
687 | .class = "timerfd", | |
688 | .probe = anon_timerfd_probe, | |
689 | .get_name = anon_timerfd_get_name, | |
690 | .fill_column = anon_timerfd_fill_column, | |
691 | .init = anon_timerfd_init, | |
692 | .free = anon_timerfd_free, | |
693 | .handle_fdinfo = anon_timerfd_handle_fdinfo, | |
694 | }; | |
695 | ||
b22d1e54 MY |
696 | /* |
697 | * signalfd | |
698 | */ | |
699 | struct anon_signalfd_data { | |
700 | uint64_t sigmask; | |
701 | }; | |
702 | ||
703 | static bool anon_signalfd_probe(const char *str) | |
704 | { | |
705 | return strncmp(str, "[signalfd]", 10) == 0; | |
706 | } | |
707 | ||
708 | static void anon_signalfd_init(struct unkn *unkn) | |
709 | { | |
710 | unkn->anon_data = xcalloc(1, sizeof(struct anon_signalfd_data)); | |
711 | } | |
712 | ||
713 | static void anon_signalfd_free(struct unkn *unkn) | |
714 | { | |
715 | struct anon_signalfd_data *data = unkn->anon_data; | |
716 | free(data); | |
717 | } | |
718 | ||
719 | static int anon_signalfd_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) | |
720 | { | |
721 | struct anon_signalfd_data *data = (struct anon_signalfd_data *)unkn->anon_data; | |
722 | ||
723 | if (strcmp(key, "sigmask") == 0) { | |
724 | if (ul_strtou64(value, &data->sigmask, 16) < 0) { | |
725 | data->sigmask = 0; | |
726 | return 0; | |
727 | } | |
728 | } | |
729 | return 0; | |
730 | } | |
731 | ||
732 | static char *anon_signalfd_make_mask_string(const char* prefix, uint64_t sigmask) | |
733 | { | |
734 | char *str = NULL; | |
735 | ||
736 | for (size_t i = 0; i < sizeof(sigmask) * 8; i++) { | |
737 | if ((((uint64_t)0x1) << i) & sigmask) { | |
738 | const int signum = i + 1; | |
739 | const char *signame = signum_to_signame(signum); | |
740 | ||
741 | if (str) | |
742 | xstrappend(&str, ","); | |
743 | else if (prefix) | |
744 | xstrappend(&str, prefix); | |
745 | ||
746 | if (signame) { | |
747 | xstrappend(&str, signame); | |
748 | } else { | |
749 | char buf[BUFSIZ]; | |
750 | snprintf(buf, sizeof(buf), "%d", signum); | |
751 | xstrappend(&str, buf); | |
752 | } | |
753 | } | |
754 | } | |
755 | ||
756 | return str; | |
757 | } | |
758 | ||
759 | static char *anon_signalfd_get_name(struct unkn *unkn) | |
760 | { | |
761 | struct anon_signalfd_data *data = (struct anon_signalfd_data *)unkn->anon_data; | |
762 | return anon_signalfd_make_mask_string("mask=", data->sigmask); | |
763 | } | |
764 | ||
765 | static bool anon_signalfd_fill_column(struct proc *proc __attribute__((__unused__)), | |
766 | struct unkn *unkn, | |
767 | struct libscols_line *ln __attribute__((__unused__)), | |
768 | int column_id, | |
769 | size_t column_index __attribute__((__unused__)), | |
770 | char **str) | |
771 | { | |
772 | struct anon_signalfd_data *data = (struct anon_signalfd_data *)unkn->anon_data; | |
773 | ||
774 | switch(column_id) { | |
775 | case COL_SIGNALFD_MASK: | |
776 | *str = anon_signalfd_make_mask_string(NULL, data->sigmask); | |
777 | return true; | |
778 | default: | |
779 | return false; | |
780 | } | |
781 | } | |
782 | ||
783 | static const struct anon_ops anon_signalfd_ops = { | |
784 | .class = "signalfd", | |
785 | .probe = anon_signalfd_probe, | |
786 | .get_name = anon_signalfd_get_name, | |
787 | .fill_column = anon_signalfd_fill_column, | |
788 | .init = anon_signalfd_init, | |
789 | .free = anon_signalfd_free, | |
790 | .handle_fdinfo = anon_signalfd_handle_fdinfo, | |
791 | }; | |
792 | ||
c1a26ac8 MY |
793 | /* |
794 | * inotify | |
795 | */ | |
796 | struct anon_inotify_data { | |
797 | struct list_head inodes; | |
798 | }; | |
799 | ||
800 | struct anon_inotify_inode { | |
801 | ino_t ino; | |
802 | dev_t sdev; | |
803 | struct list_head inodes; | |
804 | }; | |
805 | ||
806 | static bool anon_inotify_probe(const char *str) | |
807 | { | |
808 | return strncmp(str, "inotify", 7) == 0; | |
809 | } | |
810 | ||
811 | /* A device number appeared in fdinfo of an inotify file uses the kernel | |
812 | * internal representation. It is different from what we are familiar with; | |
813 | * major(3) and minor(3) don't work with the representation. | |
814 | * See linux/include/linux/kdev_t.h. */ | |
815 | #define ANON_INOTIFY_MINORBITS 20 | |
816 | #define ANON_INOTIFY_MINORMASK ((1U << ANON_INOTIFY_MINORBITS) - 1) | |
817 | ||
818 | #define ANON_INOTIFY_MAJOR(dev) ((unsigned int) ((dev) >> ANON_INOTIFY_MINORBITS)) | |
819 | #define ANON_INOTIFY_MINOR(dev) ((unsigned int) ((dev) & ANON_INOTIFY_MINORMASK)) | |
820 | ||
821 | static char *anon_inotify_make_inodes_string(const char *prefix, | |
c34f8632 | 822 | const char *sep, |
c1a26ac8 MY |
823 | enum decode_source_level decode_level, |
824 | struct anon_inotify_data *data) | |
825 | { | |
826 | char *str = NULL; | |
827 | char buf[BUFSIZ] = {'\0'}; | |
828 | bool first_element = true; | |
829 | ||
830 | struct list_head *i; | |
831 | list_for_each(i, &data->inodes) { | |
832 | char source[BUFSIZ/2] = {'\0'}; | |
833 | struct anon_inotify_inode *inode = list_entry(i, | |
834 | struct anon_inotify_inode, | |
835 | inodes); | |
836 | ||
837 | decode_source(source, sizeof(source), | |
838 | ANON_INOTIFY_MAJOR(inode->sdev), ANON_INOTIFY_MINOR(inode->sdev), | |
839 | decode_level); | |
c34f8632 | 840 | snprintf(buf, sizeof(buf), "%s%llu@%s", first_element? prefix: sep, |
c1a26ac8 MY |
841 | (unsigned long long)inode->ino, source); |
842 | first_element = false; | |
843 | ||
844 | xstrappend(&str, buf); | |
845 | } | |
846 | ||
847 | return str; | |
848 | } | |
849 | ||
850 | static char *anon_inotify_get_name(struct unkn *unkn) | |
851 | { | |
c34f8632 | 852 | return anon_inotify_make_inodes_string("inodes=", ",", DECODE_SOURCE_FULL, |
c1a26ac8 MY |
853 | (struct anon_inotify_data *)unkn->anon_data); |
854 | } | |
855 | ||
856 | static void anon_inotify_init(struct unkn *unkn) | |
857 | { | |
858 | struct anon_inotify_data *data = xcalloc(1, sizeof(struct anon_inotify_data)); | |
859 | INIT_LIST_HEAD (&data->inodes); | |
860 | unkn->anon_data = data; | |
861 | } | |
862 | ||
863 | static void anon_inotify_free(struct unkn *unkn) | |
864 | { | |
865 | struct anon_inotify_data *data = unkn->anon_data; | |
866 | ||
867 | list_free(&data->inodes, struct anon_inotify_inode, inodes, | |
868 | free); | |
869 | free(data); | |
870 | } | |
871 | ||
872 | static void add_inode(struct anon_inotify_data *data, ino_t ino, dev_t sdev) | |
873 | { | |
874 | struct anon_inotify_inode *inode = xmalloc(sizeof(*inode)); | |
875 | ||
876 | INIT_LIST_HEAD (&inode->inodes); | |
877 | inode->ino = ino; | |
878 | inode->sdev = sdev; | |
879 | ||
880 | list_add_tail(&inode->inodes, &data->inodes); | |
881 | } | |
882 | ||
883 | static int anon_inotify_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) | |
884 | { | |
885 | struct anon_inotify_data *data = (struct anon_inotify_data *)unkn->anon_data; | |
886 | ||
887 | if (strcmp(key, "inotify wd") == 0) { | |
888 | unsigned long long ino; | |
889 | unsigned long long sdev; | |
890 | ||
891 | if (sscanf(value, "%*d ino:%llx sdev:%llx %*s", &ino, &sdev) == 2) { | |
892 | add_inode(data, (ino_t)ino, (dev_t)sdev); | |
893 | return 1; | |
894 | } | |
895 | } | |
896 | return 0; | |
897 | } | |
898 | ||
899 | static bool anon_inotify_fill_column(struct proc *proc __attribute__((__unused__)), | |
900 | struct unkn *unkn, | |
901 | struct libscols_line *ln __attribute__((__unused__)), | |
902 | int column_id, | |
903 | size_t column_index __attribute__((__unused__)), | |
904 | char **str) | |
905 | { | |
906 | struct anon_inotify_data *data = (struct anon_inotify_data *)unkn->anon_data; | |
907 | ||
908 | switch(column_id) { | |
909 | case COL_INOTIFY_INODES: | |
c34f8632 | 910 | *str = anon_inotify_make_inodes_string("", "\n", DECODE_SOURCE_FULL, |
c1a26ac8 MY |
911 | data); |
912 | if (*str) | |
913 | return true; | |
914 | break; | |
915 | case COL_INOTIFY_INODES_RAW: | |
c34f8632 | 916 | *str = anon_inotify_make_inodes_string("", "\n", DECODE_SOURCE_MAJMIN, |
c1a26ac8 MY |
917 | data); |
918 | if (*str) | |
919 | return true; | |
920 | break; | |
921 | } | |
922 | ||
923 | return false; | |
924 | } | |
925 | ||
926 | static const struct anon_ops anon_inotify_ops = { | |
927 | .class = "inotify", | |
928 | .probe = anon_inotify_probe, | |
929 | .get_name = anon_inotify_get_name, | |
930 | .fill_column = anon_inotify_fill_column, | |
931 | .init = anon_inotify_init, | |
932 | .free = anon_inotify_free, | |
933 | .handle_fdinfo = anon_inotify_handle_fdinfo, | |
934 | }; | |
935 | ||
ec2c77da MY |
936 | /* |
937 | * bpf-prog | |
938 | * | |
939 | * Generally, we use "-" as the word separators in lsfd's output. | |
940 | * However, about bpf*, we use "_" because bpftool uses "_". | |
941 | */ | |
942 | static const char *bpf_prog_type_table[] = { | |
943 | [0] = "unspec", /* BPF_PROG_TYPE_UNSPEC*/ | |
944 | [1] = "socket_filter", /* BPF_PROG_TYPE_SOCKET_FILTER*/ | |
945 | [2] = "kprobe", /* BPF_PROG_TYPE_KPROBE*/ | |
946 | [3] = "sched_cls", /* BPF_PROG_TYPE_SCHED_CLS*/ | |
947 | [4] = "sched_act", /* BPF_PROG_TYPE_SCHED_ACT*/ | |
948 | [5] = "tracepoint", /* BPF_PROG_TYPE_TRACEPOINT*/ | |
949 | [6] = "xdp", /* BPF_PROG_TYPE_XDP*/ | |
950 | [7] = "perf_event", /* BPF_PROG_TYPE_PERF_EVENT*/ | |
951 | [8] = "cgroup_skb", /* BPF_PROG_TYPE_CGROUP_SKB*/ | |
952 | [9] = "cgroup_sock", /* BPF_PROG_TYPE_CGROUP_SOCK*/ | |
953 | [10] = "lwt_in", /* BPF_PROG_TYPE_LWT_IN*/ | |
954 | [11] = "lwt_out", /* BPF_PROG_TYPE_LWT_OUT*/ | |
955 | [12] = "lwt_xmit", /* BPF_PROG_TYPE_LWT_XMIT*/ | |
956 | [13] = "sock_ops", /* BPF_PROG_TYPE_SOCK_OPS*/ | |
957 | [14] = "sk_skb", /* BPF_PROG_TYPE_SK_SKB*/ | |
958 | [15] = "cgroup_device", /* BPF_PROG_TYPE_CGROUP_DEVICE*/ | |
959 | [16] = "sk_msg", /* BPF_PROG_TYPE_SK_MSG*/ | |
960 | [17] = "raw_tracepoint", /* BPF_PROG_TYPE_RAW_TRACEPOINT*/ | |
961 | [18] = "cgroup_sock_addr", /* BPF_PROG_TYPE_CGROUP_SOCK_ADDR*/ | |
962 | [19] = "lwt_seg6local", /* BPF_PROG_TYPE_LWT_SEG6LOCAL*/ | |
963 | [20] = "lirc_mode2", /* BPF_PROG_TYPE_LIRC_MODE2*/ | |
964 | [21] = "sk_reuseport", /* BPF_PROG_TYPE_SK_REUSEPORT*/ | |
965 | [22] = "flow_dissector", /* BPF_PROG_TYPE_FLOW_DISSECTOR*/ | |
966 | [23] = "cgroup_sysctl", /* BPF_PROG_TYPE_CGROUP_SYSCTL*/ | |
967 | [24] = "raw_tracepoint_writable", /* BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE*/ | |
968 | [25] = "cgroup_sockopt", /* BPF_PROG_TYPE_CGROUP_SOCKOPT*/ | |
969 | [26] = "tracing", /* BPF_PROG_TYPE_TRACING*/ | |
970 | [27] = "struct_ops", /* BPF_PROG_TYPE_STRUCT_OPS*/ | |
971 | [28] = "ext", /* BPF_PROG_TYPE_EXT*/ | |
972 | [29] = "lsm", /* BPF_PROG_TYPE_LSM*/ | |
973 | [30] = "sk_lookup", /* BPF_PROG_TYPE_SK_LOOKUP*/ | |
974 | [31] = "syscall", /* BPF_PROG_TYPE_SYSCALL*/ | |
975 | }; | |
976 | ||
977 | struct anon_bpf_prog_data { | |
978 | int type; | |
979 | int id; | |
bc808368 | 980 | char name[BPF_OBJ_NAME_LEN + 1]; |
ec2c77da MY |
981 | }; |
982 | ||
983 | static bool anon_bpf_prog_probe(const char *str) | |
984 | { | |
985 | return strncmp(str, "bpf-prog", 8) == 0; | |
986 | } | |
987 | ||
988 | static const char *anon_bpf_prog_get_prog_type_name(int type) | |
989 | { | |
990 | if (0 <= type && type < (int)ARRAY_SIZE(bpf_prog_type_table)) | |
991 | return bpf_prog_type_table[type]; | |
992 | return NULL; | |
993 | } | |
994 | ||
995 | static bool anon_bpf_prog_fill_column(struct proc *proc __attribute__((__unused__)), | |
996 | struct unkn *unkn, | |
997 | struct libscols_line *ln __attribute__((__unused__)), | |
998 | int column_id, | |
999 | size_t column_index __attribute__((__unused__)), | |
1000 | char **str) | |
1001 | { | |
1002 | struct anon_bpf_prog_data *data = (struct anon_bpf_prog_data *)unkn->anon_data; | |
1003 | const char *t; | |
1004 | ||
1005 | switch(column_id) { | |
1006 | case COL_BPF_PROG_ID: | |
1007 | xasprintf(str, "%d", data->id); | |
1008 | return true; | |
1009 | case COL_BPF_PROG_TYPE_RAW: | |
1010 | xasprintf(str, "%d", data->type); | |
1011 | return true; | |
1012 | case COL_BPF_PROG_TYPE: | |
1013 | t = anon_bpf_prog_get_prog_type_name(data->type); | |
1014 | if (t) | |
1015 | *str = xstrdup(t); | |
1016 | else | |
1017 | xasprintf(str, "UNKNOWN(%d)", data->type); | |
1018 | return true; | |
bc808368 MY |
1019 | case COL_BPF_NAME: |
1020 | *str = xstrdup(data->name); | |
1021 | return true; | |
ec2c77da MY |
1022 | default: |
1023 | return false; | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | static char *anon_bpf_prog_get_name(struct unkn *unkn) | |
1028 | { | |
1029 | const char *t; | |
1030 | char *str = NULL; | |
1031 | struct anon_bpf_prog_data *data = (struct anon_bpf_prog_data *)unkn->anon_data; | |
1032 | ||
1033 | t = anon_bpf_prog_get_prog_type_name(data->type); | |
1034 | if (t) | |
1035 | xasprintf(&str, "id=%d type=%s", data->id, t); | |
1036 | else | |
1037 | xasprintf(&str, "id=%d type=UNKNOWN(%d)", data->id, data->type); | |
1038 | ||
bc808368 MY |
1039 | if (*data->name) |
1040 | xstrfappend(&str, " name=%s", data->name); | |
1041 | ||
ec2c77da MY |
1042 | return str; |
1043 | } | |
1044 | ||
1045 | ||
1046 | static void anon_bpf_prog_init(struct unkn *unkn) | |
1047 | { | |
1048 | struct anon_bpf_prog_data *data = xmalloc(sizeof(*data)); | |
1049 | data->type = -1; | |
1050 | data->id = -1; | |
bc808368 | 1051 | data->name[0] = '\0'; |
ec2c77da MY |
1052 | unkn->anon_data = data; |
1053 | } | |
1054 | ||
1055 | static void anon_bpf_prog_free(struct unkn *unkn) | |
1056 | { | |
1057 | struct anon_bpf_prog_data *data = (struct anon_bpf_prog_data *)unkn->anon_data; | |
1058 | free(data); | |
1059 | } | |
1060 | ||
bc808368 MY |
1061 | static void anon_bpf_prog_get_more_info(struct anon_bpf_prog_data *prog_data) |
1062 | { | |
1063 | union bpf_attr attr = { | |
1064 | .prog_id = (int32_t)prog_data->id, | |
1065 | .next_id = 0, | |
1066 | .open_flags = 0, | |
1067 | }; | |
1068 | struct bpf_prog_info info = { 0 }; | |
1069 | union bpf_attr info_attr = { | |
1070 | .info.info_len = sizeof(info), | |
1071 | .info.info = (uint64_t)(uintptr_t)&info, | |
1072 | }; | |
1073 | ||
1074 | int bpf_fd = syscall(SYS_bpf, BPF_PROG_GET_FD_BY_ID, &attr, sizeof(attr)); | |
1075 | if (bpf_fd < 0) | |
1076 | return; | |
1077 | ||
1078 | info_attr.info.bpf_fd = bpf_fd; | |
1079 | if (syscall(SYS_bpf, BPF_OBJ_GET_INFO_BY_FD, &info_attr, offsetofend(union bpf_attr, info)) == 0) { | |
1080 | memcpy(prog_data->name, | |
1081 | info.name, | |
1082 | BPF_OBJ_NAME_LEN); | |
1083 | prog_data->name[BPF_OBJ_NAME_LEN] = '\0'; | |
1084 | } | |
7ce88537 | 1085 | close(bpf_fd); |
bc808368 MY |
1086 | } |
1087 | ||
ec2c77da MY |
1088 | static int anon_bpf_prog_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) |
1089 | { | |
1090 | if (strcmp(key, "prog_id") == 0) { | |
1091 | int32_t t = -1; | |
1092 | int rc = ul_strtos32(value, &t, 10); | |
1093 | if (rc < 0) | |
1094 | return 0; /* ignore -- parse failed */ | |
1095 | ((struct anon_bpf_prog_data *)unkn->anon_data)->id = (int)t; | |
bc808368 | 1096 | anon_bpf_prog_get_more_info((struct anon_bpf_prog_data *)unkn->anon_data); |
ec2c77da MY |
1097 | return 1; |
1098 | } | |
1099 | ||
1100 | if (strcmp(key, "prog_type") == 0) { | |
1101 | int32_t t = -1; | |
1102 | int rc = ul_strtos32(value, &t, 10); | |
1103 | if (rc < 0) | |
1104 | return 0; /* ignore -- parse failed */ | |
1105 | ((struct anon_bpf_prog_data *)unkn->anon_data)->type = (int)t; | |
1106 | return 1; | |
1107 | } | |
1108 | ||
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | static const struct anon_ops anon_bpf_prog_ops = { | |
1113 | .class = "bpf-prog", | |
1114 | .probe = anon_bpf_prog_probe, | |
1115 | .get_name = anon_bpf_prog_get_name, | |
1116 | .fill_column = anon_bpf_prog_fill_column, | |
1117 | .init = anon_bpf_prog_init, | |
1118 | .free = anon_bpf_prog_free, | |
1119 | .handle_fdinfo = anon_bpf_prog_handle_fdinfo, | |
1120 | }; | |
1121 | ||
ea9466d4 MY |
1122 | /* |
1123 | * bpf-map | |
1124 | */ | |
1125 | static const char *bpf_map_type_table[] = { | |
1126 | [0] = "unspec", /* BPF_MAP_TYPE_UNSPEC */ | |
1127 | [1] = "hash", /* BPF_MAP_TYPE_HASH */ | |
1128 | [2] = "array", /* BPF_MAP_TYPE_ARRAY */ | |
1129 | [3] = "prog-array", /* BPF_MAP_TYPE_PROG_ARRAY */ | |
1130 | [4] = "perf-event-array", /* BPF_MAP_TYPE_PERF_EVENT_ARRAY */ | |
1131 | [5] = "percpu-hash", /* BPF_MAP_TYPE_PERCPU_HASH */ | |
1132 | [6] = "percpu-array", /* BPF_MAP_TYPE_PERCPU_ARRAY */ | |
1133 | [7] = "stack-trace", /* BPF_MAP_TYPE_STACK_TRACE */ | |
1134 | [8] = "cgroup-array", /* BPF_MAP_TYPE_CGROUP_ARRAY */ | |
1135 | [9] = "lru-hash", /* BPF_MAP_TYPE_LRU_HASH */ | |
1136 | [10] = "lru-percpu-hash", /* BPF_MAP_TYPE_LRU_PERCPU_HASH */ | |
1137 | [11] = "lpm-trie", /* BPF_MAP_TYPE_LPM_TRIE */ | |
1138 | [12] = "array-of-maps", /* BPF_MAP_TYPE_ARRAY_OF_MAPS */ | |
1139 | [13] = "hash-of-maps", /* BPF_MAP_TYPE_HASH_OF_MAPS */ | |
1140 | [14] = "devmap", /* BPF_MAP_TYPE_DEVMAP */ | |
1141 | [15] = "sockmap", /* BPF_MAP_TYPE_SOCKMAP */ | |
1142 | [16] = "cpumap", /* BPF_MAP_TYPE_CPUMAP */ | |
1143 | [17] = "xskmap", /* BPF_MAP_TYPE_XSKMAP */ | |
1144 | [18] = "sockhash", /* BPF_MAP_TYPE_SOCKHASH */ | |
1145 | [19] = "cgroup-storage", /* BPF_MAP_TYPE_CGROUP_STORAGE */ | |
1146 | [20] = "reuseport-sockarray", /* BPF_MAP_TYPE_REUSEPORT_SOCKARRAY */ | |
1147 | [21] = "percpu-cgroup-storage", /* BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE */ | |
1148 | [22] = "queue", /* BPF_MAP_TYPE_QUEUE */ | |
1149 | [23] = "stack", /* BPF_MAP_TYPE_STACK */ | |
1150 | [24] = "sk-storage", /* BPF_MAP_TYPE_SK_STORAGE */ | |
1151 | [25] = "devmap-hash", /* BPF_MAP_TYPE_DEVMAP_HASH */ | |
1152 | [26] = "struct-ops", /* BPF_MAP_TYPE_STRUCT_OPS */ | |
1153 | [27] = "ringbuf", /* BPF_MAP_TYPE_RINGBUF */ | |
1154 | [28] = "inode-storage", /* BPF_MAP_TYPE_INODE_STORAGE */ | |
1155 | [29] = "task-storage", /* BPF_MAP_TYPE_TASK_STORAGE */ | |
1156 | [30] = "bloom-filter", /* BPF_MAP_TYPE_BLOOM_FILTER */ | |
1157 | [31] = "user-ringbuf", /* BPF_MAP_TYPE_USER_RINGBUF */ | |
1158 | [32] = "cgrp-storage", /* BPF_MAP_TYPE_CGRP_STORAGE */ | |
1159 | }; | |
1160 | ||
1161 | struct anon_bpf_map_data { | |
1162 | int type; | |
1163 | int id; | |
bc808368 | 1164 | char name[BPF_OBJ_NAME_LEN + 1]; |
ea9466d4 MY |
1165 | }; |
1166 | ||
1167 | static bool anon_bpf_map_probe(const char *str) | |
1168 | { | |
1169 | return strncmp(str, "bpf-map", 8) == 0; | |
1170 | } | |
1171 | ||
1172 | static const char *anon_bpf_map_get_map_type_name(int type) | |
1173 | { | |
1174 | if (0 <= type && type < (int)ARRAY_SIZE(bpf_map_type_table)) | |
1175 | return bpf_map_type_table[type]; | |
1176 | return NULL; | |
1177 | } | |
1178 | ||
1179 | static bool anon_bpf_map_fill_column(struct proc *proc __attribute__((__unused__)), | |
1180 | struct unkn *unkn, | |
1181 | struct libscols_line *ln __attribute__((__unused__)), | |
1182 | int column_id, | |
1183 | size_t column_index __attribute__((__unused__)), | |
1184 | char **str) | |
1185 | { | |
1186 | struct anon_bpf_prog_data *data = (struct anon_bpf_prog_data *)unkn->anon_data; | |
1187 | const char *t; | |
1188 | ||
1189 | switch(column_id) { | |
1190 | case COL_BPF_MAP_ID: | |
1191 | xasprintf(str, "%d", data->id); | |
1192 | return true; | |
1193 | case COL_BPF_MAP_TYPE_RAW: | |
1194 | xasprintf(str, "%d", data->type); | |
1195 | return true; | |
1196 | case COL_BPF_MAP_TYPE: | |
1197 | t = anon_bpf_map_get_map_type_name(data->type); | |
1198 | if (t) | |
1199 | *str = xstrdup(t); | |
1200 | else | |
1201 | xasprintf(str, "UNKNOWN(%d)", data->type); | |
1202 | return true; | |
bc808368 MY |
1203 | case COL_BPF_NAME: |
1204 | *str = xstrdup(data->name); | |
1205 | return true; | |
ea9466d4 MY |
1206 | default: |
1207 | return false; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | static char *anon_bpf_map_get_name(struct unkn *unkn) | |
1212 | { | |
1213 | const char *t; | |
1214 | char *str = NULL; | |
1215 | struct anon_bpf_map_data *data = (struct anon_bpf_map_data *)unkn->anon_data; | |
1216 | ||
1217 | t = anon_bpf_map_get_map_type_name(data->type); | |
1218 | if (t) | |
1219 | xasprintf(&str, "id=%d type=%s", data->id, t); | |
1220 | else | |
1221 | xasprintf(&str, "id=%d type=UNKNOWN(%d)", data->id, data->type); | |
bc808368 MY |
1222 | |
1223 | if (*data->name) | |
1224 | xstrfappend(&str, " name=%s", data->name); | |
1225 | ||
ea9466d4 MY |
1226 | return str; |
1227 | } | |
1228 | ||
1229 | static void anon_bpf_map_init(struct unkn *unkn) | |
1230 | { | |
1231 | struct anon_bpf_map_data *data = xmalloc(sizeof(*data)); | |
1232 | data->type = -1; | |
1233 | data->id = -1; | |
bc808368 | 1234 | data->name[0] = '\0'; |
ea9466d4 MY |
1235 | unkn->anon_data = data; |
1236 | } | |
1237 | ||
1238 | static void anon_bpf_map_free(struct unkn *unkn) | |
1239 | { | |
1240 | struct anon_bpf_map_data *data = (struct anon_bpf_map_data *)unkn->anon_data; | |
1241 | free(data); | |
1242 | } | |
1243 | ||
bc808368 MY |
1244 | static void anon_bpf_map_get_more_info(struct anon_bpf_map_data *map_data) |
1245 | { | |
1246 | union bpf_attr attr = { | |
1247 | .map_id = (int32_t)map_data->id, | |
1248 | .next_id = 0, | |
1249 | .open_flags = 0, | |
1250 | }; | |
1251 | struct bpf_map_info info = { 0 }; | |
1252 | union bpf_attr info_attr = { | |
1253 | .info.info_len = sizeof(info), | |
1254 | .info.info = (uint64_t)(uintptr_t)&info, | |
1255 | }; | |
1256 | ||
1257 | int bpf_fd = syscall(SYS_bpf, BPF_MAP_GET_FD_BY_ID, &attr, sizeof(attr)); | |
1258 | if (bpf_fd < 0) | |
1259 | return; | |
1260 | ||
1261 | info_attr.info.bpf_fd = bpf_fd; | |
1262 | if (syscall(SYS_bpf, BPF_OBJ_GET_INFO_BY_FD, &info_attr, offsetofend(union bpf_attr, info)) == 0) { | |
1263 | memcpy(map_data->name, | |
1264 | info.name, | |
1265 | BPF_OBJ_NAME_LEN); | |
1266 | map_data->name[BPF_OBJ_NAME_LEN] = '\0'; | |
1267 | } | |
7ce88537 | 1268 | close(bpf_fd); |
bc808368 MY |
1269 | } |
1270 | ||
ea9466d4 MY |
1271 | static int anon_bpf_map_handle_fdinfo(struct unkn *unkn, const char *key, const char *value) |
1272 | { | |
1273 | if (strcmp(key, "map_id") == 0) { | |
1274 | int32_t t = -1; | |
1275 | int rc = ul_strtos32(value, &t, 10); | |
1276 | if (rc < 0) | |
1277 | return 0; /* ignore -- parse failed */ | |
1278 | ((struct anon_bpf_map_data *)unkn->anon_data)->id = (int)t; | |
bc808368 | 1279 | anon_bpf_map_get_more_info((struct anon_bpf_map_data *)unkn->anon_data); |
ea9466d4 MY |
1280 | return 1; |
1281 | } | |
1282 | ||
1283 | if (strcmp(key, "map_type") == 0) { | |
1284 | int32_t t = -1; | |
1285 | int rc = ul_strtos32(value, &t, 10); | |
1286 | if (rc < 0) | |
1287 | return 0; /* ignore -- parse failed */ | |
1288 | ((struct anon_bpf_map_data *)unkn->anon_data)->type = (int)t; | |
1289 | return 1; | |
1290 | } | |
1291 | ||
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | static const struct anon_ops anon_bpf_map_ops = { | |
1296 | .class = "bpf-map", | |
1297 | .probe = anon_bpf_map_probe, | |
1298 | .get_name = anon_bpf_map_get_name, | |
1299 | .fill_column = anon_bpf_map_fill_column, | |
1300 | .init = anon_bpf_map_init, | |
1301 | .free = anon_bpf_map_free, | |
1302 | .handle_fdinfo = anon_bpf_map_handle_fdinfo, | |
1303 | }; | |
1304 | ||
9a9c96b7 MY |
1305 | /* |
1306 | * generic (fallback implementation) | |
1307 | */ | |
54a06438 | 1308 | static const struct anon_ops anon_generic_ops = { |
4cd4ed18 | 1309 | .class = NULL, |
9a9c96b7 | 1310 | .get_name = NULL, |
553a6817 | 1311 | .fill_column = NULL, |
9a9c96b7 MY |
1312 | .init = NULL, |
1313 | .free = NULL, | |
1314 | .handle_fdinfo = NULL, | |
1315 | }; | |
1316 | ||
007e405b MY |
1317 | static const struct anon_ops *anon_ops[] = { |
1318 | &anon_pidfd_ops, | |
8c2ca9c9 | 1319 | &anon_eventfd_ops, |
c2e2dd60 | 1320 | &anon_eventpoll_ops, |
188b7d64 | 1321 | &anon_timerfd_ops, |
b22d1e54 | 1322 | &anon_signalfd_ops, |
c1a26ac8 | 1323 | &anon_inotify_ops, |
ec2c77da | 1324 | &anon_bpf_prog_ops, |
ea9466d4 | 1325 | &anon_bpf_map_ops, |
007e405b MY |
1326 | }; |
1327 | ||
1328 | static const struct anon_ops *anon_probe(const char *str) | |
1329 | { | |
1330 | for (size_t i = 0; i < ARRAY_SIZE(anon_ops); i++) | |
1331 | if (anon_ops[i]->probe(str)) | |
1332 | return anon_ops[i]; | |
1333 | return &anon_generic_ops; | |
1334 | } | |
1335 | ||
14e16696 MY |
1336 | const struct file_class unkn_class = { |
1337 | .super = &file_class, | |
9a9c96b7 | 1338 | .size = sizeof(struct unkn), |
14e16696 | 1339 | .fill_column = unkn_fill_column, |
9a9c96b7 MY |
1340 | .initialize_content = unkn_init_content, |
1341 | .free_content = unkn_content_free, | |
1342 | .handle_fdinfo = unkn_handle_fdinfo, | |
d4fea4d0 MY |
1343 | .attach_xinfo = unkn_attach_xinfo, |
1344 | .get_ipc_class = unkn_get_ipc_class, | |
14e16696 | 1345 | }; |