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d26e3629 KY |
1 | /* Linux-specific functions to retrieve OS data. |
2 | ||
28e7fd62 | 3 | Copyright (C) 2009-2013 Free Software Foundation, Inc. |
d26e3629 KY |
4 | |
5 | This file is part of GDB. | |
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 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifdef GDBSERVER | |
21 | #include "server.h" | |
22 | #else | |
23 | #include "defs.h" | |
24 | #endif | |
25 | ||
26 | #include "linux-osdata.h" | |
27 | ||
28 | #include <sys/types.h> | |
b245bdfc | 29 | #include <sys/sysinfo.h> |
d26e3629 KY |
30 | #include <ctype.h> |
31 | #include <stdlib.h> | |
32 | #include <string.h> | |
33 | #include <utmp.h> | |
34 | #include <time.h> | |
35 | #include <unistd.h> | |
36 | #include <pwd.h> | |
37 | #include <grp.h> | |
38 | #include <netdb.h> | |
39 | #include <netinet/in.h> | |
40 | #include <arpa/inet.h> | |
41 | ||
42 | #include "xml-utils.h" | |
43 | #include "buffer.h" | |
44 | #include "gdb_assert.h" | |
45 | #include "gdb_dirent.h" | |
8bdce1ff | 46 | #include "gdb_stat.h" |
614c279d | 47 | #include "filestuff.h" |
d26e3629 | 48 | |
85d4a676 SS |
49 | /* Define PID_T to be a fixed size that is at least as large as pid_t, |
50 | so that reading pid values embedded in /proc works | |
51 | consistently. */ | |
52 | ||
53 | typedef long long PID_T; | |
54 | ||
55 | /* Define TIME_T to be at least as large as time_t, so that reading | |
56 | time values embedded in /proc works consistently. */ | |
57 | ||
58 | typedef long long TIME_T; | |
59 | ||
60 | #define MAX_PID_T_STRLEN (sizeof ("-9223372036854775808") - 1) | |
61 | ||
62 | /* Returns the CPU core that thread PTID is currently running on. */ | |
63 | ||
2e794194 JK |
64 | /* Compute and return the processor core of a given thread. */ |
65 | ||
d26e3629 KY |
66 | int |
67 | linux_common_core_of_thread (ptid_t ptid) | |
68 | { | |
85d4a676 | 69 | char filename[sizeof ("/proc//task//stat") + 2 * MAX_PID_T_STRLEN]; |
d26e3629 KY |
70 | FILE *f; |
71 | char *content = NULL; | |
72 | char *p; | |
73 | char *ts = 0; | |
74 | int content_read = 0; | |
75 | int i; | |
76 | int core; | |
77 | ||
85d4a676 SS |
78 | sprintf (filename, "/proc/%lld/task/%lld/stat", |
79 | (PID_T) ptid_get_pid (ptid), (PID_T) ptid_get_lwp (ptid)); | |
614c279d | 80 | f = gdb_fopen_cloexec (filename, "r"); |
d26e3629 KY |
81 | if (!f) |
82 | return -1; | |
83 | ||
84 | for (;;) | |
85 | { | |
86 | int n; | |
87 | content = xrealloc (content, content_read + 1024); | |
88 | n = fread (content + content_read, 1, 1024, f); | |
89 | content_read += n; | |
90 | if (n < 1024) | |
91 | { | |
92 | content[content_read] = '\0'; | |
93 | break; | |
94 | } | |
95 | } | |
96 | ||
97 | p = strchr (content, '('); | |
98 | ||
99 | /* Skip ")". */ | |
100 | if (p != NULL) | |
101 | p = strchr (p, ')'); | |
102 | if (p != NULL) | |
103 | p++; | |
104 | ||
105 | /* If the first field after program name has index 0, then core number is | |
106 | the field with index 36. There's no constant for that anywhere. */ | |
107 | if (p != NULL) | |
108 | p = strtok_r (p, " ", &ts); | |
109 | for (i = 0; p != NULL && i != 36; ++i) | |
110 | p = strtok_r (NULL, " ", &ts); | |
111 | ||
112 | if (p == NULL || sscanf (p, "%d", &core) == 0) | |
113 | core = -1; | |
114 | ||
115 | xfree (content); | |
116 | fclose (f); | |
117 | ||
118 | return core; | |
119 | } | |
120 | ||
85d4a676 SS |
121 | /* Finds the command-line of process PID and copies it into COMMAND. |
122 | At most MAXLEN characters are copied. If the command-line cannot | |
123 | be found, PID is copied into command in text-form. */ | |
124 | ||
d26e3629 | 125 | static void |
85d4a676 | 126 | command_from_pid (char *command, int maxlen, PID_T pid) |
d26e3629 | 127 | { |
85d4a676 | 128 | char *stat_path = xstrprintf ("/proc/%lld/stat", pid); |
614c279d | 129 | FILE *fp = gdb_fopen_cloexec (stat_path, "r"); |
d26e3629 KY |
130 | |
131 | command[0] = '\0'; | |
132 | ||
133 | if (fp) | |
134 | { | |
135 | /* sizeof (cmd) should be greater or equal to TASK_COMM_LEN (in | |
136 | include/linux/sched.h in the Linux kernel sources) plus two | |
137 | (for the brackets). */ | |
138 | char cmd[32]; | |
85d4a676 SS |
139 | PID_T stat_pid; |
140 | int items_read = fscanf (fp, "%lld %32s", &stat_pid, cmd); | |
d26e3629 KY |
141 | |
142 | if (items_read == 2 && pid == stat_pid) | |
143 | { | |
144 | cmd[strlen (cmd) - 1] = '\0'; /* Remove trailing parenthesis. */ | |
145 | strncpy (command, cmd + 1, maxlen); /* Ignore leading parenthesis. */ | |
146 | } | |
147 | ||
148 | fclose (fp); | |
149 | } | |
150 | else | |
151 | { | |
152 | /* Return the PID if a /proc entry for the process cannot be found. */ | |
85d4a676 | 153 | snprintf (command, maxlen, "%lld", pid); |
d26e3629 KY |
154 | } |
155 | ||
156 | command[maxlen - 1] = '\0'; /* Ensure string is null-terminated. */ | |
157 | ||
158 | xfree (stat_path); | |
159 | } | |
160 | ||
85d4a676 SS |
161 | /* Returns the command-line of the process with the given PID. The |
162 | returned string needs to be freed using xfree after use. */ | |
d26e3629 KY |
163 | |
164 | static char * | |
85d4a676 | 165 | commandline_from_pid (PID_T pid) |
d26e3629 | 166 | { |
85d4a676 | 167 | char *pathname = xstrprintf ("/proc/%lld/cmdline", pid); |
d26e3629 | 168 | char *commandline = NULL; |
614c279d | 169 | FILE *f = gdb_fopen_cloexec (pathname, "r"); |
d26e3629 KY |
170 | |
171 | if (f) | |
172 | { | |
173 | size_t len = 0; | |
174 | ||
175 | while (!feof (f)) | |
176 | { | |
177 | char buf[1024]; | |
178 | size_t read_bytes = fread (buf, 1, sizeof (buf), f); | |
179 | ||
180 | if (read_bytes) | |
181 | { | |
182 | commandline = (char *) xrealloc (commandline, len + read_bytes + 1); | |
183 | memcpy (commandline + len, buf, read_bytes); | |
184 | len += read_bytes; | |
185 | } | |
186 | } | |
187 | ||
188 | fclose (f); | |
189 | ||
190 | if (commandline) | |
191 | { | |
192 | size_t i; | |
193 | ||
194 | /* Replace null characters with spaces. */ | |
195 | for (i = 0; i < len; ++i) | |
196 | if (commandline[i] == '\0') | |
197 | commandline[i] = ' '; | |
198 | ||
199 | commandline[len] = '\0'; | |
200 | } | |
201 | else | |
202 | { | |
85d4a676 SS |
203 | /* Return the command in square brackets if the command-line |
204 | is empty. */ | |
d26e3629 KY |
205 | commandline = (char *) xmalloc (32); |
206 | commandline[0] = '['; | |
207 | command_from_pid (commandline + 1, 31, pid); | |
208 | ||
209 | len = strlen (commandline); | |
210 | if (len < 31) | |
211 | strcat (commandline, "]"); | |
212 | } | |
213 | } | |
214 | ||
215 | xfree (pathname); | |
216 | ||
217 | return commandline; | |
218 | } | |
219 | ||
85d4a676 SS |
220 | /* Finds the user name for the user UID and copies it into USER. At |
221 | most MAXLEN characters are copied. */ | |
222 | ||
d26e3629 KY |
223 | static void |
224 | user_from_uid (char *user, int maxlen, uid_t uid) | |
225 | { | |
226 | struct passwd *pwentry = getpwuid (uid); | |
227 | ||
228 | if (pwentry) | |
229 | { | |
230 | strncpy (user, pwentry->pw_name, maxlen); | |
85d4a676 SS |
231 | /* Ensure that the user name is null-terminated. */ |
232 | user[maxlen - 1] = '\0'; | |
d26e3629 KY |
233 | } |
234 | else | |
235 | user[0] = '\0'; | |
236 | } | |
237 | ||
85d4a676 SS |
238 | /* Finds the owner of process PID and returns the user id in OWNER. |
239 | Returns 0 if the owner was found, -1 otherwise. */ | |
240 | ||
d26e3629 | 241 | static int |
85d4a676 | 242 | get_process_owner (uid_t *owner, PID_T pid) |
d26e3629 KY |
243 | { |
244 | struct stat statbuf; | |
85d4a676 | 245 | char procentry[sizeof ("/proc/") + MAX_PID_T_STRLEN]; |
d26e3629 | 246 | |
85d4a676 | 247 | sprintf (procentry, "/proc/%lld", pid); |
d26e3629 KY |
248 | |
249 | if (stat (procentry, &statbuf) == 0 && S_ISDIR (statbuf.st_mode)) | |
250 | { | |
251 | *owner = statbuf.st_uid; | |
252 | return 0; | |
253 | } | |
254 | else | |
255 | return -1; | |
256 | } | |
257 | ||
85d4a676 | 258 | /* Find the CPU cores used by process PID and return them in CORES. |
b245bdfc | 259 | CORES points to an array of at least sysconf(_SC_NPROCESSOR_ONLN) |
85d4a676 | 260 | elements. */ |
d26e3629 KY |
261 | |
262 | static int | |
85d4a676 | 263 | get_cores_used_by_process (PID_T pid, int *cores) |
d26e3629 | 264 | { |
85d4a676 | 265 | char taskdir[sizeof ("/proc/") + MAX_PID_T_STRLEN + sizeof ("/task") - 1]; |
d26e3629 KY |
266 | DIR *dir; |
267 | struct dirent *dp; | |
268 | int task_count = 0; | |
269 | ||
85d4a676 | 270 | sprintf (taskdir, "/proc/%lld/task", pid); |
d26e3629 | 271 | dir = opendir (taskdir); |
e5798bef | 272 | if (dir) |
d26e3629 | 273 | { |
e5798bef PA |
274 | while ((dp = readdir (dir)) != NULL) |
275 | { | |
85d4a676 | 276 | PID_T tid; |
e5798bef | 277 | int core; |
d26e3629 | 278 | |
e5798bef | 279 | if (!isdigit (dp->d_name[0]) |
85d4a676 | 280 | || NAMELEN (dp) > MAX_PID_T_STRLEN) |
e5798bef | 281 | continue; |
d26e3629 | 282 | |
85d4a676 SS |
283 | sscanf (dp->d_name, "%lld", &tid); |
284 | core = linux_common_core_of_thread (ptid_build ((pid_t) pid, | |
285 | (pid_t) tid, 0)); | |
d26e3629 | 286 | |
e5798bef PA |
287 | if (core >= 0) |
288 | { | |
289 | ++cores[core]; | |
290 | ++task_count; | |
291 | } | |
d26e3629 | 292 | } |
d26e3629 | 293 | |
e5798bef PA |
294 | closedir (dir); |
295 | } | |
d26e3629 KY |
296 | |
297 | return task_count; | |
298 | } | |
299 | ||
300 | static LONGEST | |
301 | linux_xfer_osdata_processes (gdb_byte *readbuf, | |
302 | ULONGEST offset, LONGEST len) | |
303 | { | |
304 | /* We make the process list snapshot when the object starts to be read. */ | |
305 | static const char *buf; | |
306 | static LONGEST len_avail = -1; | |
307 | static struct buffer buffer; | |
308 | ||
309 | if (offset == 0) | |
310 | { | |
311 | DIR *dirp; | |
312 | ||
313 | if (len_avail != -1 && len_avail != 0) | |
314 | buffer_free (&buffer); | |
315 | len_avail = 0; | |
316 | buf = NULL; | |
317 | buffer_init (&buffer); | |
318 | buffer_grow_str (&buffer, "<osdata type=\"processes\">\n"); | |
319 | ||
320 | dirp = opendir ("/proc"); | |
321 | if (dirp) | |
322 | { | |
b245bdfc | 323 | const int num_cores = sysconf (_SC_NPROCESSORS_ONLN); |
d26e3629 KY |
324 | struct dirent *dp; |
325 | ||
326 | while ((dp = readdir (dirp)) != NULL) | |
327 | { | |
85d4a676 | 328 | PID_T pid; |
d26e3629 KY |
329 | uid_t owner; |
330 | char user[UT_NAMESIZE]; | |
331 | char *command_line; | |
332 | int *cores; | |
333 | int task_count; | |
334 | char *cores_str; | |
335 | int i; | |
336 | ||
337 | if (!isdigit (dp->d_name[0]) | |
85d4a676 | 338 | || NAMELEN (dp) > MAX_PID_T_STRLEN) |
d26e3629 KY |
339 | continue; |
340 | ||
85d4a676 | 341 | sscanf (dp->d_name, "%lld", &pid); |
d26e3629 KY |
342 | command_line = commandline_from_pid (pid); |
343 | ||
344 | if (get_process_owner (&owner, pid) == 0) | |
345 | user_from_uid (user, sizeof (user), owner); | |
346 | else | |
347 | strcpy (user, "?"); | |
348 | ||
349 | /* Find CPU cores used by the process. */ | |
350 | cores = (int *) xcalloc (num_cores, sizeof (int)); | |
351 | task_count = get_cores_used_by_process (pid, cores); | |
352 | cores_str = (char *) xcalloc (task_count, sizeof ("4294967295") + 1); | |
353 | ||
354 | for (i = 0; i < num_cores && task_count > 0; ++i) | |
355 | if (cores[i]) | |
356 | { | |
85d4a676 | 357 | char core_str[sizeof ("4294967295")]; |
d26e3629 KY |
358 | |
359 | sprintf (core_str, "%d", i); | |
360 | strcat (cores_str, core_str); | |
361 | ||
362 | task_count -= cores[i]; | |
363 | if (task_count > 0) | |
364 | strcat (cores_str, ","); | |
365 | } | |
366 | ||
367 | xfree (cores); | |
368 | ||
369 | buffer_xml_printf ( | |
370 | &buffer, | |
371 | "<item>" | |
85d4a676 | 372 | "<column name=\"pid\">%lld</column>" |
d26e3629 KY |
373 | "<column name=\"user\">%s</column>" |
374 | "<column name=\"command\">%s</column>" | |
375 | "<column name=\"cores\">%s</column>" | |
376 | "</item>", | |
377 | pid, | |
378 | user, | |
379 | command_line ? command_line : "", | |
380 | cores_str); | |
381 | ||
382 | xfree (command_line); | |
383 | xfree (cores_str); | |
384 | } | |
385 | ||
386 | closedir (dirp); | |
387 | } | |
388 | ||
389 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
390 | buf = buffer_finish (&buffer); | |
391 | len_avail = strlen (buf); | |
392 | } | |
393 | ||
394 | if (offset >= len_avail) | |
395 | { | |
396 | /* Done. Get rid of the buffer. */ | |
397 | buffer_free (&buffer); | |
398 | buf = NULL; | |
399 | len_avail = 0; | |
400 | return 0; | |
401 | } | |
402 | ||
403 | if (len > len_avail - offset) | |
404 | len = len_avail - offset; | |
405 | memcpy (readbuf, buf + offset, len); | |
406 | ||
407 | return len; | |
408 | } | |
409 | ||
85d4a676 SS |
410 | /* Auxiliary function used by qsort to sort processes by process |
411 | group. Compares two processes with ids PROCESS1 and PROCESS2. | |
412 | PROCESS1 comes before PROCESS2 if it has a lower process group id. | |
413 | If they belong to the same process group, PROCESS1 comes before | |
414 | PROCESS2 if it has a lower process id or is the process group | |
415 | leader. */ | |
416 | ||
417 | static int | |
418 | compare_processes (const void *process1, const void *process2) | |
419 | { | |
420 | PID_T pid1 = *((PID_T *) process1); | |
421 | PID_T pid2 = *((PID_T *) process2); | |
422 | PID_T pgid1 = *((PID_T *) process1 + 1); | |
423 | PID_T pgid2 = *((PID_T *) process2 + 1); | |
424 | ||
425 | /* Sort by PGID. */ | |
426 | if (pgid1 < pgid2) | |
427 | return -1; | |
428 | else if (pgid1 > pgid2) | |
429 | return 1; | |
430 | else | |
431 | { | |
432 | /* Process group leaders always come first, else sort by PID. */ | |
433 | if (pid1 == pgid1) | |
434 | return -1; | |
435 | else if (pid2 == pgid2) | |
436 | return 1; | |
437 | else if (pid1 < pid2) | |
438 | return -1; | |
439 | else if (pid1 > pid2) | |
440 | return 1; | |
441 | else | |
442 | return 0; | |
443 | } | |
444 | } | |
445 | ||
446 | /* Collect all process groups from /proc. */ | |
447 | ||
448 | static LONGEST | |
449 | linux_xfer_osdata_processgroups (gdb_byte *readbuf, | |
450 | ULONGEST offset, LONGEST len) | |
451 | { | |
452 | /* We make the process list snapshot when the object starts to be read. */ | |
453 | static const char *buf; | |
454 | static LONGEST len_avail = -1; | |
455 | static struct buffer buffer; | |
456 | ||
457 | if (offset == 0) | |
458 | { | |
459 | DIR *dirp; | |
460 | ||
461 | if (len_avail != -1 && len_avail != 0) | |
462 | buffer_free (&buffer); | |
463 | len_avail = 0; | |
464 | buf = NULL; | |
465 | buffer_init (&buffer); | |
466 | buffer_grow_str (&buffer, "<osdata type=\"process groups\">\n"); | |
467 | ||
468 | dirp = opendir ("/proc"); | |
469 | if (dirp) | |
470 | { | |
471 | struct dirent *dp; | |
472 | const size_t list_block_size = 512; | |
473 | PID_T *process_list = (PID_T *) xmalloc (list_block_size * 2 * sizeof (PID_T)); | |
474 | size_t process_count = 0; | |
475 | size_t i; | |
476 | ||
477 | /* Build list consisting of PIDs followed by their | |
478 | associated PGID. */ | |
479 | while ((dp = readdir (dirp)) != NULL) | |
480 | { | |
481 | PID_T pid, pgid; | |
482 | ||
483 | if (!isdigit (dp->d_name[0]) | |
484 | || NAMELEN (dp) > MAX_PID_T_STRLEN) | |
485 | continue; | |
486 | ||
487 | sscanf (dp->d_name, "%lld", &pid); | |
488 | pgid = getpgid (pid); | |
489 | ||
490 | if (pgid > 0) | |
491 | { | |
492 | process_list[2 * process_count] = pid; | |
493 | process_list[2 * process_count + 1] = pgid; | |
494 | ++process_count; | |
495 | ||
496 | /* Increase the size of the list if necessary. */ | |
497 | if (process_count % list_block_size == 0) | |
498 | process_list = (PID_T *) xrealloc ( | |
499 | process_list, | |
500 | (process_count + list_block_size) | |
501 | * 2 * sizeof (PID_T)); | |
502 | } | |
503 | } | |
504 | ||
505 | closedir (dirp); | |
506 | ||
507 | /* Sort the process list. */ | |
508 | qsort (process_list, process_count, 2 * sizeof (PID_T), | |
509 | compare_processes); | |
510 | ||
511 | for (i = 0; i < process_count; ++i) | |
512 | { | |
513 | PID_T pid = process_list[2 * i]; | |
514 | PID_T pgid = process_list[2 * i + 1]; | |
515 | char leader_command[32]; | |
516 | char *command_line; | |
517 | ||
518 | command_from_pid (leader_command, sizeof (leader_command), pgid); | |
519 | command_line = commandline_from_pid (pid); | |
520 | ||
521 | buffer_xml_printf ( | |
522 | &buffer, | |
523 | "<item>" | |
524 | "<column name=\"pgid\">%lld</column>" | |
525 | "<column name=\"leader command\">%s</column>" | |
526 | "<column name=\"pid\">%lld</column>" | |
527 | "<column name=\"command line\">%s</column>" | |
528 | "</item>", | |
529 | pgid, | |
530 | leader_command, | |
531 | pid, | |
532 | command_line ? command_line : ""); | |
533 | ||
534 | xfree (command_line); | |
535 | } | |
536 | ||
537 | xfree (process_list); | |
538 | } | |
539 | ||
540 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
541 | buf = buffer_finish (&buffer); | |
542 | len_avail = strlen (buf); | |
543 | } | |
544 | ||
545 | if (offset >= len_avail) | |
546 | { | |
547 | /* Done. Get rid of the buffer. */ | |
548 | buffer_free (&buffer); | |
549 | buf = NULL; | |
550 | len_avail = 0; | |
551 | return 0; | |
552 | } | |
553 | ||
554 | if (len > len_avail - offset) | |
555 | len = len_avail - offset; | |
556 | memcpy (readbuf, buf + offset, len); | |
557 | ||
558 | return len; | |
559 | } | |
560 | ||
561 | /* Collect all the threads in /proc by iterating through processes and | |
562 | then tasks within each process. */ | |
563 | ||
d26e3629 KY |
564 | static LONGEST |
565 | linux_xfer_osdata_threads (gdb_byte *readbuf, | |
566 | ULONGEST offset, LONGEST len) | |
567 | { | |
568 | /* We make the process list snapshot when the object starts to be read. */ | |
569 | static const char *buf; | |
570 | static LONGEST len_avail = -1; | |
571 | static struct buffer buffer; | |
572 | ||
573 | if (offset == 0) | |
574 | { | |
575 | DIR *dirp; | |
576 | ||
577 | if (len_avail != -1 && len_avail != 0) | |
578 | buffer_free (&buffer); | |
579 | len_avail = 0; | |
580 | buf = NULL; | |
581 | buffer_init (&buffer); | |
582 | buffer_grow_str (&buffer, "<osdata type=\"threads\">\n"); | |
583 | ||
584 | dirp = opendir ("/proc"); | |
585 | if (dirp) | |
586 | { | |
587 | struct dirent *dp; | |
588 | ||
589 | while ((dp = readdir (dirp)) != NULL) | |
590 | { | |
591 | struct stat statbuf; | |
592 | char procentry[sizeof ("/proc/4294967295")]; | |
593 | ||
594 | if (!isdigit (dp->d_name[0]) | |
595 | || NAMELEN (dp) > sizeof ("4294967295") - 1) | |
596 | continue; | |
597 | ||
598 | sprintf (procentry, "/proc/%s", dp->d_name); | |
599 | if (stat (procentry, &statbuf) == 0 | |
600 | && S_ISDIR (statbuf.st_mode)) | |
601 | { | |
602 | DIR *dirp2; | |
603 | char *pathname; | |
85d4a676 | 604 | PID_T pid; |
d26e3629 KY |
605 | char command[32]; |
606 | ||
607 | pathname = xstrprintf ("/proc/%s/task", dp->d_name); | |
608 | ||
609 | pid = atoi (dp->d_name); | |
610 | command_from_pid (command, sizeof (command), pid); | |
611 | ||
612 | dirp2 = opendir (pathname); | |
613 | ||
614 | if (dirp2) | |
615 | { | |
616 | struct dirent *dp2; | |
617 | ||
618 | while ((dp2 = readdir (dirp2)) != NULL) | |
619 | { | |
85d4a676 | 620 | PID_T tid; |
d26e3629 KY |
621 | int core; |
622 | ||
623 | if (!isdigit (dp2->d_name[0]) | |
624 | || NAMELEN (dp2) > sizeof ("4294967295") - 1) | |
625 | continue; | |
626 | ||
627 | tid = atoi (dp2->d_name); | |
628 | core = linux_common_core_of_thread (ptid_build (pid, tid, 0)); | |
629 | ||
630 | buffer_xml_printf ( | |
631 | &buffer, | |
632 | "<item>" | |
85d4a676 | 633 | "<column name=\"pid\">%lld</column>" |
d26e3629 | 634 | "<column name=\"command\">%s</column>" |
85d4a676 | 635 | "<column name=\"tid\">%lld</column>" |
d26e3629 KY |
636 | "<column name=\"core\">%d</column>" |
637 | "</item>", | |
638 | pid, | |
639 | command, | |
640 | tid, | |
641 | core); | |
642 | } | |
643 | ||
644 | closedir (dirp2); | |
645 | } | |
646 | ||
647 | xfree (pathname); | |
648 | } | |
649 | } | |
650 | ||
651 | closedir (dirp); | |
652 | } | |
653 | ||
654 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
655 | buf = buffer_finish (&buffer); | |
656 | len_avail = strlen (buf); | |
657 | } | |
658 | ||
659 | if (offset >= len_avail) | |
660 | { | |
661 | /* Done. Get rid of the buffer. */ | |
662 | buffer_free (&buffer); | |
663 | buf = NULL; | |
664 | len_avail = 0; | |
665 | return 0; | |
666 | } | |
667 | ||
668 | if (len > len_avail - offset) | |
669 | len = len_avail - offset; | |
670 | memcpy (readbuf, buf + offset, len); | |
671 | ||
672 | return len; | |
673 | } | |
674 | ||
85d4a676 SS |
675 | /* Collect all the open file descriptors found in /proc and put the details |
676 | found about them into READBUF. */ | |
677 | ||
678 | static LONGEST | |
679 | linux_xfer_osdata_fds (gdb_byte *readbuf, | |
680 | ULONGEST offset, LONGEST len) | |
681 | { | |
682 | /* We make the process list snapshot when the object starts to be read. */ | |
683 | static const char *buf; | |
684 | static LONGEST len_avail = -1; | |
685 | static struct buffer buffer; | |
686 | ||
687 | if (offset == 0) | |
688 | { | |
689 | DIR *dirp; | |
690 | ||
691 | if (len_avail != -1 && len_avail != 0) | |
692 | buffer_free (&buffer); | |
693 | len_avail = 0; | |
694 | buf = NULL; | |
695 | buffer_init (&buffer); | |
696 | buffer_grow_str (&buffer, "<osdata type=\"files\">\n"); | |
697 | ||
698 | dirp = opendir ("/proc"); | |
699 | if (dirp) | |
700 | { | |
701 | struct dirent *dp; | |
702 | ||
703 | while ((dp = readdir (dirp)) != NULL) | |
704 | { | |
705 | struct stat statbuf; | |
706 | char procentry[sizeof ("/proc/4294967295")]; | |
707 | ||
708 | if (!isdigit (dp->d_name[0]) | |
709 | || NAMELEN (dp) > sizeof ("4294967295") - 1) | |
710 | continue; | |
711 | ||
712 | sprintf (procentry, "/proc/%s", dp->d_name); | |
713 | if (stat (procentry, &statbuf) == 0 | |
714 | && S_ISDIR (statbuf.st_mode)) | |
715 | { | |
716 | char *pathname; | |
717 | DIR *dirp2; | |
718 | PID_T pid; | |
719 | char command[32]; | |
720 | ||
721 | pid = atoi (dp->d_name); | |
722 | command_from_pid (command, sizeof (command), pid); | |
723 | ||
724 | pathname = xstrprintf ("/proc/%s/fd", dp->d_name); | |
725 | dirp2 = opendir (pathname); | |
726 | ||
727 | if (dirp2) | |
728 | { | |
729 | struct dirent *dp2; | |
730 | ||
731 | while ((dp2 = readdir (dirp2)) != NULL) | |
732 | { | |
733 | char *fdname; | |
734 | char buf[1000]; | |
735 | ssize_t rslt; | |
736 | ||
737 | if (!isdigit (dp2->d_name[0])) | |
738 | continue; | |
739 | ||
740 | fdname = xstrprintf ("%s/%s", pathname, dp2->d_name); | |
0270a750 | 741 | rslt = readlink (fdname, buf, sizeof (buf) - 1); |
85d4a676 SS |
742 | if (rslt >= 0) |
743 | buf[rslt] = '\0'; | |
744 | ||
745 | buffer_xml_printf ( | |
746 | &buffer, | |
747 | "<item>" | |
748 | "<column name=\"pid\">%s</column>" | |
749 | "<column name=\"command\">%s</column>" | |
750 | "<column name=\"file descriptor\">%s</column>" | |
751 | "<column name=\"name\">%s</column>" | |
752 | "</item>", | |
753 | dp->d_name, | |
754 | command, | |
755 | dp2->d_name, | |
756 | (rslt >= 0 ? buf : dp2->d_name)); | |
757 | } | |
758 | ||
759 | closedir (dirp2); | |
760 | } | |
761 | ||
762 | xfree (pathname); | |
763 | } | |
764 | } | |
765 | ||
766 | closedir (dirp); | |
767 | } | |
768 | ||
769 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
770 | buf = buffer_finish (&buffer); | |
771 | len_avail = strlen (buf); | |
772 | } | |
773 | ||
774 | if (offset >= len_avail) | |
775 | { | |
776 | /* Done. Get rid of the buffer. */ | |
777 | buffer_free (&buffer); | |
778 | buf = NULL; | |
779 | len_avail = 0; | |
780 | return 0; | |
781 | } | |
782 | ||
783 | if (len > len_avail - offset) | |
784 | len = len_avail - offset; | |
785 | memcpy (readbuf, buf + offset, len); | |
786 | ||
787 | return len; | |
788 | } | |
789 | ||
790 | /* Returns the socket state STATE in textual form. */ | |
791 | ||
792 | static const char * | |
793 | format_socket_state (unsigned char state) | |
794 | { | |
795 | /* Copied from include/net/tcp_states.h in the Linux kernel sources. */ | |
796 | enum { | |
797 | TCP_ESTABLISHED = 1, | |
798 | TCP_SYN_SENT, | |
799 | TCP_SYN_RECV, | |
800 | TCP_FIN_WAIT1, | |
801 | TCP_FIN_WAIT2, | |
802 | TCP_TIME_WAIT, | |
803 | TCP_CLOSE, | |
804 | TCP_CLOSE_WAIT, | |
805 | TCP_LAST_ACK, | |
806 | TCP_LISTEN, | |
807 | TCP_CLOSING | |
808 | }; | |
809 | ||
810 | switch (state) | |
811 | { | |
812 | case TCP_ESTABLISHED: | |
813 | return "ESTABLISHED"; | |
814 | case TCP_SYN_SENT: | |
815 | return "SYN_SENT"; | |
816 | case TCP_SYN_RECV: | |
817 | return "SYN_RECV"; | |
818 | case TCP_FIN_WAIT1: | |
819 | return "FIN_WAIT1"; | |
820 | case TCP_FIN_WAIT2: | |
821 | return "FIN_WAIT2"; | |
822 | case TCP_TIME_WAIT: | |
823 | return "TIME_WAIT"; | |
824 | case TCP_CLOSE: | |
825 | return "CLOSE"; | |
826 | case TCP_CLOSE_WAIT: | |
827 | return "CLOSE_WAIT"; | |
828 | case TCP_LAST_ACK: | |
829 | return "LAST_ACK"; | |
830 | case TCP_LISTEN: | |
831 | return "LISTEN"; | |
832 | case TCP_CLOSING: | |
833 | return "CLOSING"; | |
834 | default: | |
835 | return "(unknown)"; | |
836 | } | |
837 | } | |
838 | ||
839 | union socket_addr | |
840 | { | |
841 | struct sockaddr sa; | |
842 | struct sockaddr_in sin; | |
843 | struct sockaddr_in6 sin6; | |
844 | }; | |
845 | ||
846 | /* Auxiliary function used by linux_xfer_osdata_isocket. Formats | |
847 | information for all open internet sockets of type FAMILY on the | |
848 | system into BUFFER. If TCP is set, only TCP sockets are processed, | |
849 | otherwise only UDP sockets are processed. */ | |
850 | ||
851 | static void | |
852 | print_sockets (unsigned short family, int tcp, struct buffer *buffer) | |
853 | { | |
854 | const char *proc_file; | |
855 | FILE *fp; | |
856 | ||
857 | if (family == AF_INET) | |
858 | proc_file = tcp ? "/proc/net/tcp" : "/proc/net/udp"; | |
859 | else if (family == AF_INET6) | |
860 | proc_file = tcp ? "/proc/net/tcp6" : "/proc/net/udp6"; | |
861 | else | |
862 | return; | |
863 | ||
614c279d | 864 | fp = gdb_fopen_cloexec (proc_file, "r"); |
85d4a676 SS |
865 | if (fp) |
866 | { | |
867 | char buf[8192]; | |
868 | ||
869 | do | |
870 | { | |
871 | if (fgets (buf, sizeof (buf), fp)) | |
872 | { | |
873 | uid_t uid; | |
874 | unsigned long tlen, inode; | |
875 | int sl, timeout; | |
876 | unsigned int local_port, remote_port, state; | |
877 | unsigned int txq, rxq, trun, retn; | |
878 | char local_address[NI_MAXHOST], remote_address[NI_MAXHOST]; | |
879 | char extra[512]; | |
880 | int result; | |
881 | ||
882 | result = sscanf (buf, | |
883 | "%d: %33[0-9A-F]:%X %33[0-9A-F]:%X %X %X:%X %X:%lX %X %d %d %lu %512s\n", | |
884 | &sl, | |
885 | local_address, &local_port, | |
886 | remote_address, &remote_port, | |
887 | &state, | |
888 | &txq, &rxq, | |
889 | &trun, &tlen, | |
890 | &retn, | |
891 | &uid, | |
892 | &timeout, | |
893 | &inode, | |
894 | extra); | |
895 | ||
896 | if (result == 15) | |
897 | { | |
898 | union socket_addr locaddr, remaddr; | |
899 | size_t addr_size; | |
900 | char user[UT_NAMESIZE]; | |
901 | char local_service[NI_MAXSERV], remote_service[NI_MAXSERV]; | |
902 | ||
903 | if (family == AF_INET) | |
904 | { | |
905 | sscanf (local_address, "%X", | |
906 | &locaddr.sin.sin_addr.s_addr); | |
907 | sscanf (remote_address, "%X", | |
908 | &remaddr.sin.sin_addr.s_addr); | |
909 | ||
910 | locaddr.sin.sin_port = htons (local_port); | |
911 | remaddr.sin.sin_port = htons (remote_port); | |
912 | ||
913 | addr_size = sizeof (struct sockaddr_in); | |
914 | } | |
915 | else | |
916 | { | |
917 | sscanf (local_address, "%8X%8X%8X%8X", | |
918 | locaddr.sin6.sin6_addr.s6_addr32, | |
919 | locaddr.sin6.sin6_addr.s6_addr32 + 1, | |
920 | locaddr.sin6.sin6_addr.s6_addr32 + 2, | |
921 | locaddr.sin6.sin6_addr.s6_addr32 + 3); | |
922 | sscanf (remote_address, "%8X%8X%8X%8X", | |
923 | remaddr.sin6.sin6_addr.s6_addr32, | |
924 | remaddr.sin6.sin6_addr.s6_addr32 + 1, | |
925 | remaddr.sin6.sin6_addr.s6_addr32 + 2, | |
926 | remaddr.sin6.sin6_addr.s6_addr32 + 3); | |
927 | ||
928 | locaddr.sin6.sin6_port = htons (local_port); | |
929 | remaddr.sin6.sin6_port = htons (remote_port); | |
930 | ||
931 | locaddr.sin6.sin6_flowinfo = 0; | |
932 | remaddr.sin6.sin6_flowinfo = 0; | |
933 | locaddr.sin6.sin6_scope_id = 0; | |
934 | remaddr.sin6.sin6_scope_id = 0; | |
935 | ||
936 | addr_size = sizeof (struct sockaddr_in6); | |
937 | } | |
938 | ||
939 | locaddr.sa.sa_family = remaddr.sa.sa_family = family; | |
940 | ||
941 | result = getnameinfo (&locaddr.sa, addr_size, | |
942 | local_address, sizeof (local_address), | |
943 | local_service, sizeof (local_service), | |
944 | NI_NUMERICHOST | NI_NUMERICSERV | |
945 | | (tcp ? 0 : NI_DGRAM)); | |
946 | if (result) | |
947 | continue; | |
948 | ||
949 | result = getnameinfo (&remaddr.sa, addr_size, | |
950 | remote_address, | |
951 | sizeof (remote_address), | |
952 | remote_service, | |
953 | sizeof (remote_service), | |
954 | NI_NUMERICHOST | NI_NUMERICSERV | |
955 | | (tcp ? 0 : NI_DGRAM)); | |
956 | if (result) | |
957 | continue; | |
958 | ||
959 | user_from_uid (user, sizeof (user), uid); | |
960 | ||
961 | buffer_xml_printf ( | |
962 | buffer, | |
963 | "<item>" | |
964 | "<column name=\"local address\">%s</column>" | |
965 | "<column name=\"local port\">%s</column>" | |
966 | "<column name=\"remote address\">%s</column>" | |
967 | "<column name=\"remote port\">%s</column>" | |
968 | "<column name=\"state\">%s</column>" | |
969 | "<column name=\"user\">%s</column>" | |
970 | "<column name=\"family\">%s</column>" | |
971 | "<column name=\"protocol\">%s</column>" | |
972 | "</item>", | |
973 | local_address, | |
974 | local_service, | |
975 | remote_address, | |
976 | remote_service, | |
977 | format_socket_state (state), | |
978 | user, | |
979 | (family == AF_INET) ? "INET" : "INET6", | |
980 | tcp ? "STREAM" : "DGRAM"); | |
981 | } | |
982 | } | |
983 | } | |
984 | while (!feof (fp)); | |
985 | ||
986 | fclose (fp); | |
987 | } | |
988 | } | |
989 | ||
990 | /* Collect data about internet sockets and write it into READBUF. */ | |
991 | ||
992 | static LONGEST | |
993 | linux_xfer_osdata_isockets (gdb_byte *readbuf, | |
994 | ULONGEST offset, LONGEST len) | |
995 | { | |
996 | static const char *buf; | |
997 | static LONGEST len_avail = -1; | |
998 | static struct buffer buffer; | |
999 | ||
1000 | if (offset == 0) | |
1001 | { | |
1002 | if (len_avail != -1 && len_avail != 0) | |
1003 | buffer_free (&buffer); | |
1004 | len_avail = 0; | |
1005 | buf = NULL; | |
1006 | buffer_init (&buffer); | |
1007 | buffer_grow_str (&buffer, "<osdata type=\"I sockets\">\n"); | |
1008 | ||
1009 | print_sockets (AF_INET, 1, &buffer); | |
1010 | print_sockets (AF_INET, 0, &buffer); | |
1011 | print_sockets (AF_INET6, 1, &buffer); | |
1012 | print_sockets (AF_INET6, 0, &buffer); | |
1013 | ||
1014 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
1015 | buf = buffer_finish (&buffer); | |
1016 | len_avail = strlen (buf); | |
1017 | } | |
1018 | ||
1019 | if (offset >= len_avail) | |
1020 | { | |
1021 | /* Done. Get rid of the buffer. */ | |
1022 | buffer_free (&buffer); | |
1023 | buf = NULL; | |
1024 | len_avail = 0; | |
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | if (len > len_avail - offset) | |
1029 | len = len_avail - offset; | |
1030 | memcpy (readbuf, buf + offset, len); | |
1031 | ||
1032 | return len; | |
1033 | } | |
1034 | ||
1035 | /* Converts the time SECONDS into textual form and copies it into a | |
1036 | buffer TIME, with at most MAXLEN characters copied. */ | |
1037 | ||
1038 | static void | |
1039 | time_from_time_t (char *time, int maxlen, TIME_T seconds) | |
1040 | { | |
1041 | if (!seconds) | |
1042 | time[0] = '\0'; | |
1043 | else | |
1044 | { | |
1045 | time_t t = (time_t) seconds; | |
1046 | ||
1047 | strncpy (time, ctime (&t), maxlen); | |
1048 | time[maxlen - 1] = '\0'; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | /* Finds the group name for the group GID and copies it into GROUP. | |
1053 | At most MAXLEN characters are copied. */ | |
1054 | ||
1055 | static void | |
1056 | group_from_gid (char *group, int maxlen, gid_t gid) | |
1057 | { | |
1058 | struct group *grentry = getgrgid (gid); | |
1059 | ||
1060 | if (grentry) | |
1061 | { | |
1062 | strncpy (group, grentry->gr_name, maxlen); | |
1063 | /* Ensure that the group name is null-terminated. */ | |
1064 | group[maxlen - 1] = '\0'; | |
1065 | } | |
1066 | else | |
1067 | group[0] = '\0'; | |
1068 | } | |
1069 | ||
1070 | /* Collect data about shared memory recorded in /proc and write it | |
1071 | into READBUF. */ | |
1072 | ||
1073 | static LONGEST | |
1074 | linux_xfer_osdata_shm (gdb_byte *readbuf, | |
1075 | ULONGEST offset, LONGEST len) | |
1076 | { | |
1077 | static const char *buf; | |
1078 | static LONGEST len_avail = -1; | |
1079 | static struct buffer buffer; | |
1080 | ||
1081 | if (offset == 0) | |
1082 | { | |
1083 | FILE *fp; | |
1084 | ||
1085 | if (len_avail != -1 && len_avail != 0) | |
1086 | buffer_free (&buffer); | |
1087 | len_avail = 0; | |
1088 | buf = NULL; | |
1089 | buffer_init (&buffer); | |
1090 | buffer_grow_str (&buffer, "<osdata type=\"shared memory\">\n"); | |
1091 | ||
614c279d | 1092 | fp = gdb_fopen_cloexec ("/proc/sysvipc/shm", "r"); |
85d4a676 SS |
1093 | if (fp) |
1094 | { | |
1095 | char buf[8192]; | |
1096 | ||
1097 | do | |
1098 | { | |
1099 | if (fgets (buf, sizeof (buf), fp)) | |
1100 | { | |
1101 | key_t key; | |
1102 | uid_t uid, cuid; | |
1103 | gid_t gid, cgid; | |
1104 | PID_T cpid, lpid; | |
1105 | int shmid, size, nattch; | |
1106 | TIME_T atime, dtime, ctime; | |
1107 | unsigned int perms; | |
1108 | int items_read; | |
1109 | ||
1110 | items_read = sscanf (buf, | |
1111 | "%d %d %o %d %lld %lld %d %u %u %u %u %lld %lld %lld", | |
1112 | &key, &shmid, &perms, &size, | |
1113 | &cpid, &lpid, | |
1114 | &nattch, | |
1115 | &uid, &gid, &cuid, &cgid, | |
1116 | &atime, &dtime, &ctime); | |
1117 | ||
1118 | if (items_read == 14) | |
1119 | { | |
1120 | char user[UT_NAMESIZE], group[UT_NAMESIZE]; | |
1121 | char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; | |
1122 | char ccmd[32], lcmd[32]; | |
1123 | char atime_str[32], dtime_str[32], ctime_str[32]; | |
1124 | ||
1125 | user_from_uid (user, sizeof (user), uid); | |
1126 | group_from_gid (group, sizeof (group), gid); | |
1127 | user_from_uid (cuser, sizeof (cuser), cuid); | |
1128 | group_from_gid (cgroup, sizeof (cgroup), cgid); | |
1129 | ||
1130 | command_from_pid (ccmd, sizeof (ccmd), cpid); | |
1131 | command_from_pid (lcmd, sizeof (lcmd), lpid); | |
1132 | ||
1133 | time_from_time_t (atime_str, sizeof (atime_str), atime); | |
1134 | time_from_time_t (dtime_str, sizeof (dtime_str), dtime); | |
1135 | time_from_time_t (ctime_str, sizeof (ctime_str), ctime); | |
1136 | ||
1137 | buffer_xml_printf ( | |
1138 | &buffer, | |
1139 | "<item>" | |
1140 | "<column name=\"key\">%d</column>" | |
1141 | "<column name=\"shmid\">%d</column>" | |
1142 | "<column name=\"permissions\">%o</column>" | |
1143 | "<column name=\"size\">%d</column>" | |
1144 | "<column name=\"creator command\">%s</column>" | |
1145 | "<column name=\"last op. command\">%s</column>" | |
1146 | "<column name=\"num attached\">%d</column>" | |
1147 | "<column name=\"user\">%s</column>" | |
1148 | "<column name=\"group\">%s</column>" | |
1149 | "<column name=\"creator user\">%s</column>" | |
1150 | "<column name=\"creator group\">%s</column>" | |
1151 | "<column name=\"last shmat() time\">%s</column>" | |
1152 | "<column name=\"last shmdt() time\">%s</column>" | |
1153 | "<column name=\"last shmctl() time\">%s</column>" | |
1154 | "</item>", | |
1155 | key, | |
1156 | shmid, | |
1157 | perms, | |
1158 | size, | |
1159 | ccmd, | |
1160 | lcmd, | |
1161 | nattch, | |
1162 | user, | |
1163 | group, | |
1164 | cuser, | |
1165 | cgroup, | |
1166 | atime_str, | |
1167 | dtime_str, | |
1168 | ctime_str); | |
1169 | } | |
1170 | } | |
1171 | } | |
1172 | while (!feof (fp)); | |
1173 | ||
1174 | fclose (fp); | |
1175 | } | |
1176 | ||
1177 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
1178 | buf = buffer_finish (&buffer); | |
1179 | len_avail = strlen (buf); | |
1180 | } | |
1181 | ||
1182 | if (offset >= len_avail) | |
1183 | { | |
1184 | /* Done. Get rid of the buffer. */ | |
1185 | buffer_free (&buffer); | |
1186 | buf = NULL; | |
1187 | len_avail = 0; | |
1188 | return 0; | |
1189 | } | |
1190 | ||
1191 | if (len > len_avail - offset) | |
1192 | len = len_avail - offset; | |
1193 | memcpy (readbuf, buf + offset, len); | |
1194 | ||
1195 | return len; | |
1196 | } | |
1197 | ||
1198 | /* Collect data about semaphores recorded in /proc and write it | |
1199 | into READBUF. */ | |
1200 | ||
1201 | static LONGEST | |
1202 | linux_xfer_osdata_sem (gdb_byte *readbuf, | |
1203 | ULONGEST offset, LONGEST len) | |
1204 | { | |
1205 | static const char *buf; | |
1206 | static LONGEST len_avail = -1; | |
1207 | static struct buffer buffer; | |
1208 | ||
1209 | if (offset == 0) | |
1210 | { | |
1211 | FILE *fp; | |
1212 | ||
1213 | if (len_avail != -1 && len_avail != 0) | |
1214 | buffer_free (&buffer); | |
1215 | len_avail = 0; | |
1216 | buf = NULL; | |
1217 | buffer_init (&buffer); | |
1218 | buffer_grow_str (&buffer, "<osdata type=\"semaphores\">\n"); | |
1219 | ||
614c279d | 1220 | fp = gdb_fopen_cloexec ("/proc/sysvipc/sem", "r"); |
85d4a676 SS |
1221 | if (fp) |
1222 | { | |
1223 | char buf[8192]; | |
1224 | ||
1225 | do | |
1226 | { | |
1227 | if (fgets (buf, sizeof (buf), fp)) | |
1228 | { | |
1229 | key_t key; | |
1230 | uid_t uid, cuid; | |
1231 | gid_t gid, cgid; | |
1232 | unsigned int perms, nsems; | |
1233 | int semid; | |
1234 | TIME_T otime, ctime; | |
1235 | int items_read; | |
1236 | ||
1237 | items_read = sscanf (buf, | |
1238 | "%d %d %o %u %d %d %d %d %lld %lld", | |
1239 | &key, &semid, &perms, &nsems, | |
1240 | &uid, &gid, &cuid, &cgid, | |
1241 | &otime, &ctime); | |
1242 | ||
1243 | if (items_read == 10) | |
1244 | { | |
1245 | char user[UT_NAMESIZE], group[UT_NAMESIZE]; | |
1246 | char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; | |
1247 | char otime_str[32], ctime_str[32]; | |
1248 | ||
1249 | user_from_uid (user, sizeof (user), uid); | |
1250 | group_from_gid (group, sizeof (group), gid); | |
1251 | user_from_uid (cuser, sizeof (cuser), cuid); | |
1252 | group_from_gid (cgroup, sizeof (cgroup), cgid); | |
1253 | ||
1254 | time_from_time_t (otime_str, sizeof (otime_str), otime); | |
1255 | time_from_time_t (ctime_str, sizeof (ctime_str), ctime); | |
1256 | ||
1257 | buffer_xml_printf ( | |
1258 | &buffer, | |
1259 | "<item>" | |
1260 | "<column name=\"key\">%d</column>" | |
1261 | "<column name=\"semid\">%d</column>" | |
1262 | "<column name=\"permissions\">%o</column>" | |
1263 | "<column name=\"num semaphores\">%u</column>" | |
1264 | "<column name=\"user\">%s</column>" | |
1265 | "<column name=\"group\">%s</column>" | |
1266 | "<column name=\"creator user\">%s</column>" | |
1267 | "<column name=\"creator group\">%s</column>" | |
1268 | "<column name=\"last semop() time\">%s</column>" | |
1269 | "<column name=\"last semctl() time\">%s</column>" | |
1270 | "</item>", | |
1271 | key, | |
1272 | semid, | |
1273 | perms, | |
1274 | nsems, | |
1275 | user, | |
1276 | group, | |
1277 | cuser, | |
1278 | cgroup, | |
1279 | otime_str, | |
1280 | ctime_str); | |
1281 | } | |
1282 | } | |
1283 | } | |
1284 | while (!feof (fp)); | |
1285 | ||
1286 | fclose (fp); | |
1287 | } | |
1288 | ||
1289 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
1290 | buf = buffer_finish (&buffer); | |
1291 | len_avail = strlen (buf); | |
1292 | } | |
1293 | ||
1294 | if (offset >= len_avail) | |
1295 | { | |
1296 | /* Done. Get rid of the buffer. */ | |
1297 | buffer_free (&buffer); | |
1298 | buf = NULL; | |
1299 | len_avail = 0; | |
1300 | return 0; | |
1301 | } | |
1302 | ||
1303 | if (len > len_avail - offset) | |
1304 | len = len_avail - offset; | |
1305 | memcpy (readbuf, buf + offset, len); | |
1306 | ||
1307 | return len; | |
1308 | } | |
1309 | ||
1310 | /* Collect data about message queues recorded in /proc and write it | |
1311 | into READBUF. */ | |
1312 | ||
1313 | static LONGEST | |
1314 | linux_xfer_osdata_msg (gdb_byte *readbuf, | |
1315 | ULONGEST offset, LONGEST len) | |
1316 | { | |
1317 | static const char *buf; | |
1318 | static LONGEST len_avail = -1; | |
1319 | static struct buffer buffer; | |
1320 | ||
1321 | if (offset == 0) | |
1322 | { | |
1323 | FILE *fp; | |
1324 | ||
1325 | if (len_avail != -1 && len_avail != 0) | |
1326 | buffer_free (&buffer); | |
1327 | len_avail = 0; | |
1328 | buf = NULL; | |
1329 | buffer_init (&buffer); | |
1330 | buffer_grow_str (&buffer, "<osdata type=\"message queues\">\n"); | |
1331 | ||
614c279d | 1332 | fp = gdb_fopen_cloexec ("/proc/sysvipc/msg", "r"); |
85d4a676 SS |
1333 | if (fp) |
1334 | { | |
1335 | char buf[8192]; | |
1336 | ||
1337 | do | |
1338 | { | |
1339 | if (fgets (buf, sizeof (buf), fp)) | |
1340 | { | |
1341 | key_t key; | |
1342 | PID_T lspid, lrpid; | |
1343 | uid_t uid, cuid; | |
1344 | gid_t gid, cgid; | |
1345 | unsigned int perms, cbytes, qnum; | |
1346 | int msqid; | |
1347 | TIME_T stime, rtime, ctime; | |
1348 | int items_read; | |
1349 | ||
1350 | items_read = sscanf (buf, | |
1351 | "%d %d %o %u %u %lld %lld %d %d %d %d %lld %lld %lld", | |
1352 | &key, &msqid, &perms, &cbytes, &qnum, | |
1353 | &lspid, &lrpid, &uid, &gid, &cuid, &cgid, | |
1354 | &stime, &rtime, &ctime); | |
1355 | ||
1356 | if (items_read == 14) | |
1357 | { | |
1358 | char user[UT_NAMESIZE], group[UT_NAMESIZE]; | |
1359 | char cuser[UT_NAMESIZE], cgroup[UT_NAMESIZE]; | |
1360 | char lscmd[32], lrcmd[32]; | |
1361 | char stime_str[32], rtime_str[32], ctime_str[32]; | |
1362 | ||
1363 | user_from_uid (user, sizeof (user), uid); | |
1364 | group_from_gid (group, sizeof (group), gid); | |
1365 | user_from_uid (cuser, sizeof (cuser), cuid); | |
1366 | group_from_gid (cgroup, sizeof (cgroup), cgid); | |
1367 | ||
1368 | command_from_pid (lscmd, sizeof (lscmd), lspid); | |
1369 | command_from_pid (lrcmd, sizeof (lrcmd), lrpid); | |
1370 | ||
1371 | time_from_time_t (stime_str, sizeof (stime_str), stime); | |
1372 | time_from_time_t (rtime_str, sizeof (rtime_str), rtime); | |
1373 | time_from_time_t (ctime_str, sizeof (ctime_str), ctime); | |
1374 | ||
1375 | buffer_xml_printf ( | |
1376 | &buffer, | |
1377 | "<item>" | |
1378 | "<column name=\"key\">%d</column>" | |
1379 | "<column name=\"msqid\">%d</column>" | |
1380 | "<column name=\"permissions\">%o</column>" | |
1381 | "<column name=\"num used bytes\">%u</column>" | |
1382 | "<column name=\"num messages\">%u</column>" | |
1383 | "<column name=\"last msgsnd() command\">%s</column>" | |
1384 | "<column name=\"last msgrcv() command\">%s</column>" | |
1385 | "<column name=\"user\">%s</column>" | |
1386 | "<column name=\"group\">%s</column>" | |
1387 | "<column name=\"creator user\">%s</column>" | |
1388 | "<column name=\"creator group\">%s</column>" | |
1389 | "<column name=\"last msgsnd() time\">%s</column>" | |
1390 | "<column name=\"last msgrcv() time\">%s</column>" | |
1391 | "<column name=\"last msgctl() time\">%s</column>" | |
1392 | "</item>", | |
1393 | key, | |
1394 | msqid, | |
1395 | perms, | |
1396 | cbytes, | |
1397 | qnum, | |
1398 | lscmd, | |
1399 | lrcmd, | |
1400 | user, | |
1401 | group, | |
1402 | cuser, | |
1403 | cgroup, | |
1404 | stime_str, | |
1405 | rtime_str, | |
1406 | ctime_str); | |
1407 | } | |
1408 | } | |
1409 | } | |
1410 | while (!feof (fp)); | |
1411 | ||
1412 | fclose (fp); | |
1413 | } | |
1414 | ||
1415 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
1416 | buf = buffer_finish (&buffer); | |
1417 | len_avail = strlen (buf); | |
1418 | } | |
1419 | ||
1420 | if (offset >= len_avail) | |
1421 | { | |
1422 | /* Done. Get rid of the buffer. */ | |
1423 | buffer_free (&buffer); | |
1424 | buf = NULL; | |
1425 | len_avail = 0; | |
1426 | return 0; | |
1427 | } | |
1428 | ||
1429 | if (len > len_avail - offset) | |
1430 | len = len_avail - offset; | |
1431 | memcpy (readbuf, buf + offset, len); | |
1432 | ||
1433 | return len; | |
1434 | } | |
1435 | ||
1436 | /* Collect data about loaded kernel modules and write it into | |
1437 | READBUF. */ | |
1438 | ||
1439 | static LONGEST | |
1440 | linux_xfer_osdata_modules (gdb_byte *readbuf, | |
1441 | ULONGEST offset, LONGEST len) | |
1442 | { | |
1443 | static const char *buf; | |
1444 | static LONGEST len_avail = -1; | |
1445 | static struct buffer buffer; | |
1446 | ||
1447 | if (offset == 0) | |
1448 | { | |
1449 | FILE *fp; | |
1450 | ||
1451 | if (len_avail != -1 && len_avail != 0) | |
1452 | buffer_free (&buffer); | |
1453 | len_avail = 0; | |
1454 | buf = NULL; | |
1455 | buffer_init (&buffer); | |
1456 | buffer_grow_str (&buffer, "<osdata type=\"modules\">\n"); | |
1457 | ||
614c279d | 1458 | fp = gdb_fopen_cloexec ("/proc/modules", "r"); |
85d4a676 SS |
1459 | if (fp) |
1460 | { | |
1461 | char buf[8192]; | |
1462 | ||
1463 | do | |
1464 | { | |
1465 | if (fgets (buf, sizeof (buf), fp)) | |
1466 | { | |
1467 | char name[64], dependencies[256], status[16]; | |
1468 | unsigned int size; | |
1469 | unsigned long long address; | |
1470 | int uses; | |
1471 | int items_read; | |
1472 | ||
1473 | items_read = sscanf (buf, | |
1474 | "%64s %d %d %256s %16s 0x%llx", | |
1475 | name, &size, &uses, | |
1476 | dependencies, status, &address); | |
1477 | ||
1478 | if (items_read == 6) | |
1479 | buffer_xml_printf ( | |
1480 | &buffer, | |
1481 | "<item>" | |
1482 | "<column name=\"name\">%s</column>" | |
1483 | "<column name=\"size\">%u</column>" | |
1484 | "<column name=\"num uses\">%d</column>" | |
1485 | "<column name=\"dependencies\">%s</column>" | |
1486 | "<column name=\"status\">%s</column>" | |
1487 | "<column name=\"address\">%llx</column>" | |
1488 | "</item>", | |
1489 | name, | |
1490 | size, | |
1491 | uses, | |
1492 | dependencies, | |
1493 | status, | |
1494 | address); | |
1495 | } | |
1496 | } | |
1497 | while (!feof (fp)); | |
1498 | ||
1499 | fclose (fp); | |
1500 | } | |
1501 | ||
1502 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
1503 | buf = buffer_finish (&buffer); | |
1504 | len_avail = strlen (buf); | |
1505 | } | |
1506 | ||
1507 | if (offset >= len_avail) | |
1508 | { | |
1509 | /* Done. Get rid of the buffer. */ | |
1510 | buffer_free (&buffer); | |
1511 | buf = NULL; | |
1512 | len_avail = 0; | |
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | if (len > len_avail - offset) | |
1517 | len = len_avail - offset; | |
1518 | memcpy (readbuf, buf + offset, len); | |
1519 | ||
1520 | return len; | |
1521 | } | |
1522 | ||
d26e3629 KY |
1523 | struct osdata_type { |
1524 | char *type; | |
71caed83 | 1525 | char *title; |
d26e3629 KY |
1526 | char *description; |
1527 | LONGEST (*getter) (gdb_byte *readbuf, ULONGEST offset, LONGEST len); | |
1528 | } osdata_table[] = { | |
71caed83 | 1529 | { "processes", "Processes", "Listing of all processes", |
85d4a676 | 1530 | linux_xfer_osdata_processes }, |
71caed83 | 1531 | { "procgroups", "Process groups", "Listing of all process groups", |
85d4a676 | 1532 | linux_xfer_osdata_processgroups }, |
71caed83 | 1533 | { "threads", "Threads", "Listing of all threads", |
85d4a676 | 1534 | linux_xfer_osdata_threads }, |
71caed83 | 1535 | { "files", "File descriptors", "Listing of all file descriptors", |
85d4a676 | 1536 | linux_xfer_osdata_fds }, |
71caed83 | 1537 | { "sockets", "Sockets", "Listing of all internet-domain sockets", |
85d4a676 | 1538 | linux_xfer_osdata_isockets }, |
71caed83 | 1539 | { "shm", "Shared-memory regions", "Listing of all shared-memory regions", |
85d4a676 | 1540 | linux_xfer_osdata_shm }, |
71caed83 | 1541 | { "semaphores", "Semaphores", "Listing of all semaphores", |
85d4a676 | 1542 | linux_xfer_osdata_sem }, |
71caed83 | 1543 | { "msg", "Message queues", "Listing of all message queues", |
85d4a676 | 1544 | linux_xfer_osdata_msg }, |
71caed83 | 1545 | { "modules", "Kernel modules", "Listing of all loaded kernel modules", |
85d4a676 | 1546 | linux_xfer_osdata_modules }, |
d26e3629 KY |
1547 | { NULL, NULL, NULL } |
1548 | }; | |
1549 | ||
1550 | LONGEST | |
1551 | linux_common_xfer_osdata (const char *annex, gdb_byte *readbuf, | |
1552 | ULONGEST offset, LONGEST len) | |
1553 | { | |
1554 | if (!annex || *annex == '\0') | |
1555 | { | |
1556 | static const char *buf; | |
1557 | static LONGEST len_avail = -1; | |
1558 | static struct buffer buffer; | |
1559 | ||
1560 | if (offset == 0) | |
1561 | { | |
1562 | int i; | |
1563 | ||
1564 | if (len_avail != -1 && len_avail != 0) | |
1565 | buffer_free (&buffer); | |
1566 | len_avail = 0; | |
1567 | buf = NULL; | |
1568 | buffer_init (&buffer); | |
1569 | buffer_grow_str (&buffer, "<osdata type=\"types\">\n"); | |
1570 | ||
1571 | for (i = 0; osdata_table[i].type; ++i) | |
1572 | buffer_xml_printf ( | |
1573 | &buffer, | |
1574 | "<item>" | |
1575 | "<column name=\"Type\">%s</column>" | |
1576 | "<column name=\"Description\">%s</column>" | |
71caed83 | 1577 | "<column name=\"Title\">%s</column>" |
d26e3629 KY |
1578 | "</item>", |
1579 | osdata_table[i].type, | |
71caed83 SS |
1580 | osdata_table[i].description, |
1581 | osdata_table[i].title); | |
d26e3629 KY |
1582 | |
1583 | buffer_grow_str0 (&buffer, "</osdata>\n"); | |
1584 | buf = buffer_finish (&buffer); | |
1585 | len_avail = strlen (buf); | |
1586 | } | |
1587 | ||
1588 | if (offset >= len_avail) | |
1589 | { | |
1590 | /* Done. Get rid of the buffer. */ | |
1591 | buffer_free (&buffer); | |
1592 | buf = NULL; | |
1593 | len_avail = 0; | |
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | if (len > len_avail - offset) | |
1598 | len = len_avail - offset; | |
1599 | memcpy (readbuf, buf + offset, len); | |
1600 | ||
1601 | return len; | |
1602 | } | |
1603 | else | |
1604 | { | |
1605 | int i; | |
1606 | ||
1607 | for (i = 0; osdata_table[i].type; ++i) | |
1608 | { | |
1609 | if (strcmp (annex, osdata_table[i].type) == 0) | |
1610 | { | |
1611 | gdb_assert (readbuf); | |
1612 | ||
1613 | return (osdata_table[i].getter) (readbuf, offset, len); | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | return 0; | |
1618 | } | |
1619 | } | |
1620 |