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5de0409e ZJS |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2012 Zbigniew Jędrzejewski-Szmek | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
a9cdc94f | 22 | #include <locale.h> |
5de0409e ZJS |
23 | #include <stdio.h> |
24 | #include <string.h> | |
25 | #include <getopt.h> | |
ada45c78 LP |
26 | #include <fcntl.h> |
27 | #include <unistd.h> | |
5de0409e | 28 | |
73f860db | 29 | #include "systemd/sd-journal.h" |
5de0409e ZJS |
30 | |
31 | #include "build.h" | |
32 | #include "set.h" | |
33 | #include "util.h" | |
34 | #include "log.h" | |
35 | #include "path-util.h" | |
36 | #include "pager.h" | |
763c7aa2 | 37 | #include "macro.h" |
dfb33a97 | 38 | #include "journal-internal.h" |
a276ae74 | 39 | #include "copy.h" |
9fe13294 | 40 | #include "compress.h" |
5de0409e ZJS |
41 | |
42 | static enum { | |
43 | ACTION_NONE, | |
e15758cc | 44 | ACTION_INFO, |
5de0409e ZJS |
45 | ACTION_LIST, |
46 | ACTION_DUMP, | |
ada45c78 | 47 | ACTION_GDB, |
5de0409e | 48 | } arg_action = ACTION_LIST; |
e15758cc | 49 | static const char* arg_field = NULL; |
ccc40358 | 50 | static int arg_no_pager = false; |
9a340880 | 51 | static int arg_no_legend = false; |
0c51aada LP |
52 | static int arg_one = false; |
53 | ||
54 | static FILE* output = NULL; | |
5de0409e ZJS |
55 | |
56 | static Set *new_matches(void) { | |
57 | Set *set; | |
58 | char *tmp; | |
59 | int r; | |
60 | ||
d5099efc | 61 | set = set_new(NULL); |
5de0409e ZJS |
62 | if (!set) { |
63 | log_oom(); | |
64 | return NULL; | |
65 | } | |
66 | ||
67 | tmp = strdup("MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1"); | |
68 | if (!tmp) { | |
69 | log_oom(); | |
4a207bb2 | 70 | set_free(set); |
5de0409e ZJS |
71 | return NULL; |
72 | } | |
73 | ||
ef42202a | 74 | r = set_consume(set, tmp); |
5de0409e | 75 | if (r < 0) { |
0a1beeb6 | 76 | log_error_errno(-r, "failed to add to set: %m"); |
4a207bb2 | 77 | set_free(set); |
5de0409e ZJS |
78 | return NULL; |
79 | } | |
80 | ||
81 | return set; | |
82 | } | |
83 | ||
5de0409e ZJS |
84 | static int add_match(Set *set, const char *match) { |
85 | int r = -ENOMEM; | |
86 | unsigned pid; | |
87 | const char* prefix; | |
88 | char *pattern = NULL; | |
7fd1b19b | 89 | _cleanup_free_ char *p = NULL; |
5de0409e ZJS |
90 | |
91 | if (strchr(match, '=')) | |
92 | prefix = ""; | |
93 | else if (strchr(match, '/')) { | |
94 | p = path_make_absolute_cwd(match); | |
95 | if (!p) | |
96 | goto fail; | |
97 | ||
98 | match = p; | |
99 | prefix = "COREDUMP_EXE="; | |
100 | } | |
101 | else if (safe_atou(match, &pid) == 0) | |
102 | prefix = "COREDUMP_PID="; | |
103 | else | |
104 | prefix = "COREDUMP_COMM="; | |
105 | ||
106 | pattern = strjoin(prefix, match, NULL); | |
107 | if (!pattern) | |
108 | goto fail; | |
109 | ||
ef42202a | 110 | log_debug("Adding pattern: %s", pattern); |
f7a5bb28 | 111 | r = set_consume(set, pattern); |
5de0409e | 112 | if (r < 0) { |
0a1beeb6 | 113 | log_error_errno(-r, "Failed to add pattern: %m"); |
5de0409e ZJS |
114 | goto fail; |
115 | } | |
5de0409e ZJS |
116 | |
117 | return 0; | |
118 | fail: | |
0a1beeb6 | 119 | log_error_errno(-r, "Failed to add match: %m"); |
5de0409e ZJS |
120 | return r; |
121 | } | |
122 | ||
601185b4 ZJS |
123 | static void help(void) { |
124 | printf("%s [OPTIONS...]\n\n" | |
125 | "List or retrieve coredumps from the journal.\n\n" | |
126 | "Flags:\n" | |
127 | " -h --help Show this help\n" | |
128 | " --version Print version string\n" | |
129 | " --no-pager Do not pipe output into a pager\n" | |
130 | " --no-legend Do not print the column headers.\n" | |
131 | " -1 Show information about most recent entry only\n" | |
132 | " -F --field=FIELD List all values a certain field takes\n" | |
133 | " -o --output=FILE Write output to FILE\n\n" | |
134 | ||
135 | "Commands:\n" | |
136 | " list [MATCHES...] List available coredumps (default)\n" | |
137 | " info [MATCHES...] Show detailed information about one or more coredumps\n" | |
138 | " dump [MATCHES...] Print first matching coredump to stdout\n" | |
139 | " gdb [MATCHES...] Start gdb for the first matching coredump\n" | |
140 | , program_invocation_short_name); | |
141 | } | |
142 | ||
763c7aa2 | 143 | static int parse_argv(int argc, char *argv[], Set *matches) { |
5de0409e ZJS |
144 | enum { |
145 | ARG_VERSION = 0x100, | |
146 | ARG_NO_PAGER, | |
9a340880 | 147 | ARG_NO_LEGEND, |
5de0409e ZJS |
148 | }; |
149 | ||
150 | int r, c; | |
151 | ||
152 | static const struct option options[] = { | |
57ce4bd4 ZJS |
153 | { "help", no_argument, NULL, 'h' }, |
154 | { "version" , no_argument, NULL, ARG_VERSION }, | |
155 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
9a340880 | 156 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, |
57ce4bd4 | 157 | { "output", required_argument, NULL, 'o' }, |
4f76ae1b | 158 | { "field", required_argument, NULL, 'F' }, |
eb9da376 | 159 | {} |
5de0409e ZJS |
160 | }; |
161 | ||
162 | assert(argc >= 0); | |
163 | assert(argv); | |
164 | ||
0c51aada | 165 | while ((c = getopt_long(argc, argv, "ho:F:1", options, NULL)) >= 0) |
5de0409e | 166 | switch(c) { |
eb9da376 | 167 | |
5de0409e | 168 | case 'h': |
5de0409e | 169 | arg_action = ACTION_NONE; |
601185b4 ZJS |
170 | help(); |
171 | return 0; | |
5de0409e ZJS |
172 | |
173 | case ARG_VERSION: | |
eb9da376 | 174 | arg_action = ACTION_NONE; |
5de0409e | 175 | puts(PACKAGE_STRING); |
5de0409e | 176 | puts(SYSTEMD_FEATURES); |
5de0409e ZJS |
177 | return 0; |
178 | ||
179 | case ARG_NO_PAGER: | |
180 | arg_no_pager = true; | |
181 | break; | |
182 | ||
9a340880 ZJS |
183 | case ARG_NO_LEGEND: |
184 | arg_no_legend = true; | |
185 | break; | |
186 | ||
5de0409e ZJS |
187 | case 'o': |
188 | if (output) { | |
189 | log_error("cannot set output more than once"); | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
193 | output = fopen(optarg, "we"); | |
194 | if (!output) { | |
195 | log_error("writing to '%s': %m", optarg); | |
196 | return -errno; | |
197 | } | |
198 | ||
199 | break; | |
57ce4bd4 | 200 | |
4f76ae1b | 201 | case 'F': |
a276ae74 | 202 | if (arg_field) { |
4f76ae1b ZJS |
203 | log_error("cannot use --field/-F more than once"); |
204 | return -EINVAL; | |
205 | } | |
a276ae74 | 206 | arg_field = optarg; |
4f76ae1b ZJS |
207 | break; |
208 | ||
0c51aada LP |
209 | case '1': |
210 | arg_one = true; | |
211 | break; | |
212 | ||
57ce4bd4 ZJS |
213 | case '?': |
214 | return -EINVAL; | |
215 | ||
5de0409e | 216 | default: |
eb9da376 | 217 | assert_not_reached("Unhandled option"); |
5de0409e ZJS |
218 | } |
219 | ||
220 | if (optind < argc) { | |
221 | const char *cmd = argv[optind++]; | |
f168c273 | 222 | if (streq(cmd, "list")) |
5de0409e ZJS |
223 | arg_action = ACTION_LIST; |
224 | else if (streq(cmd, "dump")) | |
225 | arg_action = ACTION_DUMP; | |
ada45c78 LP |
226 | else if (streq(cmd, "gdb")) |
227 | arg_action = ACTION_GDB; | |
e15758cc LP |
228 | else if (streq(cmd, "info")) |
229 | arg_action = ACTION_INFO; | |
5de0409e ZJS |
230 | else { |
231 | log_error("Unknown action '%s'", cmd); | |
232 | return -EINVAL; | |
233 | } | |
234 | } | |
235 | ||
a276ae74 | 236 | if (arg_field && arg_action != ACTION_LIST) { |
4f76ae1b ZJS |
237 | log_error("Option --field/-F only makes sense with list"); |
238 | return -EINVAL; | |
239 | } | |
240 | ||
5de0409e ZJS |
241 | while (optind < argc) { |
242 | r = add_match(matches, argv[optind]); | |
243 | if (r != 0) | |
244 | return r; | |
245 | optind++; | |
246 | } | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
8bc8ab83 LP |
251 | static int retrieve(const void *data, |
252 | size_t len, | |
253 | const char *name, | |
a276ae74 | 254 | char **var) { |
5de0409e | 255 | |
4f76ae1b | 256 | size_t ident; |
a276ae74 | 257 | char *v; |
8bc8ab83 | 258 | |
4f76ae1b | 259 | ident = strlen(name) + 1; /* name + "=" */ |
8bc8ab83 | 260 | |
4f76ae1b | 261 | if (len < ident) |
8bc8ab83 | 262 | return 0; |
5de0409e | 263 | |
4f76ae1b | 264 | if (memcmp(data, name, ident - 1) != 0) |
8bc8ab83 LP |
265 | return 0; |
266 | ||
4f76ae1b | 267 | if (((const char*) data)[ident - 1] != '=') |
8bc8ab83 | 268 | return 0; |
5de0409e | 269 | |
a276ae74 LP |
270 | v = strndup((const char*)data + ident, len - ident); |
271 | if (!v) | |
5de0409e ZJS |
272 | return log_oom(); |
273 | ||
a276ae74 LP |
274 | free(*var); |
275 | *var = v; | |
276 | ||
5de0409e ZJS |
277 | return 0; |
278 | } | |
279 | ||
4f76ae1b | 280 | static void print_field(FILE* file, sd_journal *j) { |
a276ae74 | 281 | _cleanup_free_ char *value = NULL; |
4f76ae1b ZJS |
282 | const void *d; |
283 | size_t l; | |
284 | ||
e15758cc LP |
285 | assert(file); |
286 | assert(j); | |
287 | ||
a276ae74 | 288 | assert(arg_field); |
4f76ae1b ZJS |
289 | |
290 | SD_JOURNAL_FOREACH_DATA(j, d, l) | |
a276ae74 LP |
291 | retrieve(d, l, arg_field, &value); |
292 | ||
4f76ae1b ZJS |
293 | if (value) |
294 | fprintf(file, "%s\n", value); | |
295 | } | |
296 | ||
e15758cc | 297 | static int print_list(FILE* file, sd_journal *j, int had_legend) { |
a276ae74 | 298 | _cleanup_free_ char |
5de0409e | 299 | *pid = NULL, *uid = NULL, *gid = NULL, |
9fe13294 ZJS |
300 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, |
301 | *filename = NULL; | |
8bc8ab83 LP |
302 | const void *d; |
303 | size_t l; | |
684341b0 LP |
304 | usec_t t; |
305 | char buf[FORMAT_TIMESTAMP_MAX]; | |
306 | int r; | |
9fe13294 | 307 | bool present; |
8bc8ab83 | 308 | |
e15758cc LP |
309 | assert(file); |
310 | assert(j); | |
311 | ||
8bc8ab83 | 312 | SD_JOURNAL_FOREACH_DATA(j, d, l) { |
8bc8ab83 LP |
313 | retrieve(d, l, "COREDUMP_PID", &pid); |
314 | retrieve(d, l, "COREDUMP_UID", &uid); | |
315 | retrieve(d, l, "COREDUMP_GID", &gid); | |
316 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
317 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
a276ae74 LP |
318 | retrieve(d, l, "COREDUMP_COMM", &comm); |
319 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
9fe13294 | 320 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
8bc8ab83 | 321 | } |
5de0409e | 322 | |
9fe13294 | 323 | if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline && !filename) { |
684341b0 LP |
324 | log_warning("Empty coredump log entry"); |
325 | return -EINVAL; | |
326 | } | |
327 | ||
328 | r = sd_journal_get_realtime_usec(j, &t); | |
329 | if (r < 0) { | |
0a1beeb6 | 330 | log_error_errno(-r, "Failed to get realtime timestamp: %m"); |
684341b0 | 331 | return r; |
5de0409e ZJS |
332 | } |
333 | ||
684341b0 | 334 | format_timestamp(buf, sizeof(buf), t); |
9fe13294 | 335 | present = filename && access(filename, F_OK) == 0; |
684341b0 | 336 | |
9a340880 | 337 | if (!had_legend && !arg_no_legend) |
9fe13294 | 338 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 339 | FORMAT_TIMESTAMP_WIDTH, "TIME", |
5de0409e ZJS |
340 | 6, "PID", |
341 | 5, "UID", | |
342 | 5, "GID", | |
684341b0 | 343 | 3, "SIG", |
9fe13294 | 344 | 1, "PRESENT", |
684341b0 | 345 | "EXE"); |
5de0409e | 346 | |
9fe13294 | 347 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 348 | FORMAT_TIMESTAMP_WIDTH, buf, |
a276ae74 LP |
349 | 6, strna(pid), |
350 | 5, strna(uid), | |
351 | 5, strna(gid), | |
352 | 3, strna(sgnl), | |
9fe13294 | 353 | 1, present ? "*" : "", |
a276ae74 | 354 | strna(exe ?: (comm ?: cmdline))); |
684341b0 LP |
355 | |
356 | return 0; | |
5de0409e ZJS |
357 | } |
358 | ||
e15758cc LP |
359 | static int print_info(FILE *file, sd_journal *j, bool need_space) { |
360 | _cleanup_free_ char | |
361 | *pid = NULL, *uid = NULL, *gid = NULL, | |
362 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, | |
363 | *unit = NULL, *user_unit = NULL, *session = NULL, | |
a035f819 | 364 | *boot_id = NULL, *machine_id = NULL, *hostname = NULL, |
9fe13294 ZJS |
365 | *slice = NULL, *cgroup = NULL, *owner_uid = NULL, |
366 | *message = NULL, *timestamp = NULL, *filename = NULL; | |
e15758cc LP |
367 | const void *d; |
368 | size_t l; | |
4b8cbe9a | 369 | int r; |
e15758cc LP |
370 | |
371 | assert(file); | |
372 | assert(j); | |
373 | ||
374 | SD_JOURNAL_FOREACH_DATA(j, d, l) { | |
375 | retrieve(d, l, "COREDUMP_PID", &pid); | |
376 | retrieve(d, l, "COREDUMP_UID", &uid); | |
377 | retrieve(d, l, "COREDUMP_GID", &gid); | |
378 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
379 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
380 | retrieve(d, l, "COREDUMP_COMM", &comm); | |
381 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
382 | retrieve(d, l, "COREDUMP_UNIT", &unit); | |
383 | retrieve(d, l, "COREDUMP_USER_UNIT", &user_unit); | |
384 | retrieve(d, l, "COREDUMP_SESSION", &session); | |
a035f819 LP |
385 | retrieve(d, l, "COREDUMP_OWNER_UID", &owner_uid); |
386 | retrieve(d, l, "COREDUMP_SLICE", &slice); | |
387 | retrieve(d, l, "COREDUMP_CGROUP", &cgroup); | |
4b8cbe9a | 388 | retrieve(d, l, "COREDUMP_TIMESTAMP", ×tamp); |
9fe13294 | 389 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
e15758cc LP |
390 | retrieve(d, l, "_BOOT_ID", &boot_id); |
391 | retrieve(d, l, "_MACHINE_ID", &machine_id); | |
392 | retrieve(d, l, "_HOSTNAME", &hostname); | |
8d4e028f | 393 | retrieve(d, l, "MESSAGE", &message); |
e15758cc LP |
394 | } |
395 | ||
396 | if (need_space) | |
397 | fputs("\n", file); | |
398 | ||
81cef14f LP |
399 | if (comm) |
400 | fprintf(file, | |
401 | " PID: %s%s%s (%s)\n", | |
402 | ansi_highlight(), strna(pid), ansi_highlight_off(), comm); | |
403 | else | |
404 | fprintf(file, | |
405 | " PID: %s%s%s\n", | |
406 | ansi_highlight(), strna(pid), ansi_highlight_off()); | |
a035f819 LP |
407 | |
408 | if (uid) { | |
409 | uid_t n; | |
410 | ||
411 | if (parse_uid(uid, &n) >= 0) { | |
412 | _cleanup_free_ char *u = NULL; | |
413 | ||
414 | u = uid_to_name(n); | |
415 | fprintf(file, | |
416 | " UID: %s (%s)\n", | |
417 | uid, u); | |
418 | } else { | |
419 | fprintf(file, | |
420 | " UID: %s\n", | |
421 | uid); | |
422 | } | |
423 | } | |
424 | ||
425 | if (gid) { | |
426 | gid_t n; | |
427 | ||
428 | if (parse_gid(gid, &n) >= 0) { | |
429 | _cleanup_free_ char *g = NULL; | |
430 | ||
431 | g = gid_to_name(n); | |
432 | fprintf(file, | |
433 | " GID: %s (%s)\n", | |
434 | gid, g); | |
435 | } else { | |
436 | fprintf(file, | |
437 | " GID: %s\n", | |
438 | gid); | |
439 | } | |
440 | } | |
e15758cc LP |
441 | |
442 | if (sgnl) { | |
443 | int sig; | |
444 | ||
445 | if (safe_atoi(sgnl, &sig) >= 0) | |
446 | fprintf(file, " Signal: %s (%s)\n", sgnl, signal_to_string(sig)); | |
447 | else | |
448 | fprintf(file, " Signal: %s\n", sgnl); | |
449 | } | |
450 | ||
4b8cbe9a LP |
451 | if (timestamp) { |
452 | usec_t u; | |
453 | ||
454 | r = safe_atou64(timestamp, &u); | |
455 | if (r >= 0) { | |
456 | char absolute[FORMAT_TIMESTAMP_MAX], relative[FORMAT_TIMESPAN_MAX]; | |
457 | ||
458 | fprintf(file, | |
459 | " Timestamp: %s (%s)\n", | |
460 | format_timestamp(absolute, sizeof(absolute), u), | |
461 | format_timestamp_relative(relative, sizeof(relative), u)); | |
462 | ||
463 | } else | |
464 | fprintf(file, " Timestamp: %s\n", timestamp); | |
465 | } | |
466 | ||
e15758cc LP |
467 | if (cmdline) |
468 | fprintf(file, " Command Line: %s\n", cmdline); | |
81cef14f LP |
469 | if (exe) |
470 | fprintf(file, " Executable: %s%s%s\n", ansi_highlight(), exe, ansi_highlight_off()); | |
a035f819 LP |
471 | if (cgroup) |
472 | fprintf(file, " Control Group: %s\n", cgroup); | |
e15758cc LP |
473 | if (unit) |
474 | fprintf(file, " Unit: %s\n", unit); | |
475 | if (user_unit) | |
476 | fprintf(file, " User Unit: %s\n", unit); | |
a035f819 LP |
477 | if (slice) |
478 | fprintf(file, " Slice: %s\n", slice); | |
e15758cc LP |
479 | if (session) |
480 | fprintf(file, " Session: %s\n", session); | |
a035f819 LP |
481 | if (owner_uid) { |
482 | uid_t n; | |
483 | ||
484 | if (parse_uid(owner_uid, &n) >= 0) { | |
485 | _cleanup_free_ char *u = NULL; | |
486 | ||
487 | u = uid_to_name(n); | |
488 | fprintf(file, | |
489 | " Owner UID: %s (%s)\n", | |
490 | owner_uid, u); | |
491 | } else { | |
492 | fprintf(file, | |
493 | " Owner UID: %s\n", | |
494 | owner_uid); | |
495 | } | |
496 | } | |
e15758cc LP |
497 | if (boot_id) |
498 | fprintf(file, " Boot ID: %s\n", boot_id); | |
499 | if (machine_id) | |
500 | fprintf(file, " Machine ID: %s\n", machine_id); | |
501 | if (hostname) | |
502 | fprintf(file, " Hostname: %s\n", hostname); | |
503 | ||
9fe13294 ZJS |
504 | if (filename && access(filename, F_OK) == 0) |
505 | fprintf(file, " Coredump: %s\n", filename); | |
e15758cc | 506 | |
8d4e028f LP |
507 | if (message) { |
508 | _cleanup_free_ char *m = NULL; | |
509 | ||
510 | m = strreplace(message, "\n", "\n "); | |
511 | ||
512 | fprintf(file, " Message: %s\n", strstrip(m ?: message)); | |
513 | } | |
514 | ||
e15758cc LP |
515 | return 0; |
516 | } | |
517 | ||
ada45c78 | 518 | static int focus(sd_journal *j) { |
5de0409e ZJS |
519 | int r; |
520 | ||
5de0409e ZJS |
521 | r = sd_journal_seek_tail(j); |
522 | if (r == 0) | |
523 | r = sd_journal_previous(j); | |
524 | if (r < 0) { | |
0a1beeb6 | 525 | log_error_errno(-r, "Failed to search journal: %m"); |
5de0409e ZJS |
526 | return r; |
527 | } | |
8bc8ab83 | 528 | if (r == 0) { |
0c51aada | 529 | log_error("No match found."); |
8bc8ab83 LP |
530 | return -ESRCH; |
531 | } | |
ada45c78 LP |
532 | return r; |
533 | } | |
5de0409e | 534 | |
0c51aada LP |
535 | static void print_entry(sd_journal *j, unsigned n_found) { |
536 | assert(j); | |
537 | ||
538 | if (arg_action == ACTION_INFO) | |
539 | print_info(stdout, j, n_found); | |
540 | else if (arg_field) | |
541 | print_field(stdout, j); | |
542 | else | |
543 | print_list(stdout, j, n_found); | |
544 | } | |
545 | ||
546 | static int dump_list(sd_journal *j) { | |
547 | unsigned n_found = 0; | |
548 | int r; | |
549 | ||
550 | assert(j); | |
551 | ||
552 | /* The coredumps are likely to compressed, and for just | |
553 | * listing them we don't need to decompress them, so let's | |
554 | * pick a fairly low data threshold here */ | |
555 | sd_journal_set_data_threshold(j, 4096); | |
556 | ||
557 | if (arg_one) { | |
558 | r = focus(j); | |
559 | if (r < 0) | |
560 | return r; | |
561 | ||
562 | print_entry(j, 0); | |
563 | } else { | |
564 | SD_JOURNAL_FOREACH(j) | |
565 | print_entry(j, n_found++); | |
566 | ||
567 | if (!arg_field && n_found <= 0) { | |
568 | log_notice("No coredumps found."); | |
569 | return -ESRCH; | |
570 | } | |
571 | } | |
572 | ||
573 | return 0; | |
574 | } | |
575 | ||
9fe13294 ZJS |
576 | static int save_core(sd_journal *j, int fd, char **path, bool *unlink_temp) { |
577 | const char *data; | |
578 | _cleanup_free_ char *filename = NULL; | |
579 | size_t len; | |
ada45c78 LP |
580 | int r; |
581 | ||
9fe13294 ZJS |
582 | assert((fd >= 0) != !!path); |
583 | assert(!!path == !!unlink_temp); | |
ada45c78 | 584 | |
9fe13294 ZJS |
585 | /* Prefer uncompressed file to journal (probably cached) to |
586 | * compressed file (probably uncached). */ | |
587 | r = sd_journal_get_data(j, "COREDUMP_FILENAME", (const void**) &data, &len); | |
588 | if (r < 0 && r != -ENOENT) | |
0a1beeb6 | 589 | log_warning_errno(-r, "Failed to retrieve COREDUMP_FILENAME: %m"); |
9fe13294 ZJS |
590 | else if (r == 0) |
591 | retrieve(data, len, "COREDUMP_FILENAME", &filename); | |
93b73b06 | 592 | |
9fe13294 | 593 | if (filename && access(filename, R_OK) < 0) { |
31cda3d1 ZJS |
594 | log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, |
595 | "File %s is not readable: %m", filename); | |
9fe13294 ZJS |
596 | free(filename); |
597 | filename = NULL; | |
5de0409e ZJS |
598 | } |
599 | ||
d89c8fdf | 600 | if (filename && !endswith(filename, ".xz") && !endswith(filename, ".lz4")) { |
d0c8806d TA |
601 | if (path) { |
602 | *path = filename; | |
603 | filename = NULL; | |
604 | } | |
a276ae74 | 605 | |
9fe13294 ZJS |
606 | return 0; |
607 | } else { | |
608 | _cleanup_close_ int fdt = -1; | |
609 | char *temp = NULL; | |
a276ae74 | 610 | |
a276ae74 | 611 | if (fd < 0) { |
9fe13294 ZJS |
612 | temp = strdup("/var/tmp/coredump-XXXXXX"); |
613 | if (!temp) | |
614 | return log_oom(); | |
615 | ||
616 | fdt = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC); | |
617 | if (fdt < 0) { | |
618 | log_error("Failed to create temporary file: %m"); | |
619 | return -errno; | |
620 | } | |
621 | log_debug("Created temporary file %s", temp); | |
622 | ||
623 | fd = fdt; | |
624 | } | |
625 | ||
626 | r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len); | |
627 | if (r == 0) { | |
628 | ssize_t sz; | |
629 | ||
630 | assert(len >= 9); | |
631 | data += 9; | |
632 | len -= 9; | |
633 | ||
634 | sz = write(fdt, data, len); | |
635 | if (sz < 0) { | |
636 | log_error("Failed to write temporary file: %m"); | |
637 | r = -errno; | |
638 | goto error; | |
639 | } | |
640 | if (sz != (ssize_t) len) { | |
641 | log_error("Short write to temporary file."); | |
642 | r = -EIO; | |
643 | goto error; | |
644 | } | |
645 | } else if (filename) { | |
d89c8fdf | 646 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
9fe13294 ZJS |
647 | _cleanup_close_ int fdf; |
648 | ||
649 | fdf = open(filename, O_RDONLY | O_CLOEXEC); | |
650 | if (fdf < 0) { | |
651 | log_error("Failed to open %s: %m", filename); | |
652 | r = -errno; | |
653 | goto error; | |
654 | } | |
655 | ||
d89c8fdf | 656 | r = decompress_stream(filename, fdf, fd, -1); |
9fe13294 | 657 | if (r < 0) { |
0a1beeb6 | 658 | log_error_errno(-r, "Failed to decompress %s: %m", filename); |
9fe13294 ZJS |
659 | goto error; |
660 | } | |
2fb8159f | 661 | #else |
d89c8fdf | 662 | log_error("Cannot decompress file. Compiled without compression support."); |
2fb8159f DM |
663 | r = -ENOTSUP; |
664 | goto error; | |
665 | #endif | |
9fe13294 ZJS |
666 | } else { |
667 | if (r == -ENOENT) | |
31cda3d1 | 668 | log_error("Cannot retrieve coredump from journal nor disk."); |
a276ae74 | 669 | else |
0a1beeb6 | 670 | log_error_errno(-r, "Failed to retrieve COREDUMP field: %m"); |
9fe13294 ZJS |
671 | goto error; |
672 | } | |
a276ae74 | 673 | |
9fe13294 ZJS |
674 | if (temp) { |
675 | *path = temp; | |
676 | *unlink_temp = true; | |
a276ae74 LP |
677 | } |
678 | ||
9fe13294 ZJS |
679 | return 0; |
680 | ||
681 | error: | |
682 | if (temp) { | |
683 | unlink(temp); | |
684 | log_debug("Removed temporary file %s", temp); | |
a276ae74 | 685 | } |
9fe13294 ZJS |
686 | return r; |
687 | } | |
688 | } | |
a276ae74 | 689 | |
9fe13294 ZJS |
690 | static int dump_core(sd_journal* j) { |
691 | int r; | |
692 | ||
693 | assert(j); | |
694 | ||
695 | r = focus(j); | |
696 | if (r < 0) | |
ada45c78 | 697 | return r; |
ada45c78 | 698 | |
9fe13294 ZJS |
699 | print_info(output ? stdout : stderr, j, false); |
700 | ||
701 | if (on_tty() && !output) { | |
702 | log_error("Refusing to dump core to tty."); | |
703 | return -ENOTTY; | |
704 | } | |
705 | ||
706 | r = save_core(j, output ? fileno(output) : STDOUT_FILENO, NULL, NULL); | |
707 | if (r < 0) { | |
0a1beeb6 | 708 | log_error_errno(-r, "Coredump retrieval failed: %m"); |
9fe13294 | 709 | return r; |
5de0409e ZJS |
710 | } |
711 | ||
712 | r = sd_journal_previous(j); | |
713 | if (r >= 0) | |
9f6445e3 | 714 | log_warning("More than one entry matches, ignoring rest."); |
5de0409e ZJS |
715 | |
716 | return 0; | |
717 | } | |
718 | ||
ada45c78 | 719 | static int run_gdb(sd_journal *j) { |
de8f6e54 | 720 | _cleanup_free_ char *exe = NULL, *path = NULL; |
9fe13294 ZJS |
721 | bool unlink_path = false; |
722 | const char *data; | |
a276ae74 | 723 | siginfo_t st; |
ada45c78 | 724 | size_t len; |
ada45c78 | 725 | pid_t pid; |
ada45c78 | 726 | int r; |
ada45c78 LP |
727 | |
728 | assert(j); | |
729 | ||
730 | r = focus(j); | |
731 | if (r < 0) | |
732 | return r; | |
733 | ||
e15758cc LP |
734 | print_info(stdout, j, false); |
735 | fputs("\n", stdout); | |
ada45c78 LP |
736 | |
737 | r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len); | |
738 | if (r < 0) { | |
0a1beeb6 | 739 | log_error_errno(-r, "Failed to retrieve COREDUMP_EXE field: %m"); |
ada45c78 LP |
740 | return r; |
741 | } | |
742 | ||
9fe13294 ZJS |
743 | assert(len > strlen("COREDUMP_EXE=")); |
744 | data += strlen("COREDUMP_EXE="); | |
745 | len -= strlen("COREDUMP_EXE="); | |
ada45c78 LP |
746 | |
747 | exe = strndup(data, len); | |
748 | if (!exe) | |
749 | return log_oom(); | |
750 | ||
751 | if (endswith(exe, " (deleted)")) { | |
752 | log_error("Binary already deleted."); | |
753 | return -ENOENT; | |
754 | } | |
755 | ||
a276ae74 LP |
756 | if (!path_is_absolute(exe)) { |
757 | log_error("Binary is not an absolute path."); | |
758 | return -ENOENT; | |
759 | } | |
760 | ||
9fe13294 ZJS |
761 | r = save_core(j, -1, &path, &unlink_path); |
762 | if (r < 0) { | |
0a1beeb6 | 763 | log_error_errno(-r, "Failed to retrieve core: %m"); |
ada45c78 | 764 | return r; |
a276ae74 | 765 | } |
ada45c78 LP |
766 | |
767 | pid = fork(); | |
768 | if (pid < 0) { | |
769 | log_error("Failed to fork(): %m"); | |
770 | r = -errno; | |
771 | goto finish; | |
772 | } | |
773 | if (pid == 0) { | |
774 | execlp("gdb", "gdb", exe, path, NULL); | |
a276ae74 | 775 | |
ada45c78 LP |
776 | log_error("Failed to invoke gdb: %m"); |
777 | _exit(1); | |
778 | } | |
779 | ||
780 | r = wait_for_terminate(pid, &st); | |
781 | if (r < 0) { | |
782 | log_error("Failed to wait for gdb: %m"); | |
783 | goto finish; | |
784 | } | |
785 | ||
786 | r = st.si_code == CLD_EXITED ? st.si_status : 255; | |
787 | ||
788 | finish: | |
9fe13294 ZJS |
789 | if (unlink_path) { |
790 | log_debug("Removed temporary file %s", path); | |
791 | unlink(path); | |
792 | } | |
a276ae74 | 793 | |
ada45c78 LP |
794 | return r; |
795 | } | |
796 | ||
5de0409e | 797 | int main(int argc, char *argv[]) { |
7fd1b19b | 798 | _cleanup_journal_close_ sd_journal*j = NULL; |
5de0409e ZJS |
799 | const char* match; |
800 | Iterator it; | |
801 | int r = 0; | |
7fd1b19b | 802 | _cleanup_set_free_free_ Set *matches = NULL; |
5de0409e | 803 | |
a9cdc94f | 804 | setlocale(LC_ALL, ""); |
5de0409e ZJS |
805 | log_parse_environment(); |
806 | log_open(); | |
807 | ||
808 | matches = new_matches(); | |
2fb7a5ce ZJS |
809 | if (!matches) { |
810 | r = -ENOMEM; | |
5de0409e | 811 | goto end; |
2fb7a5ce | 812 | } |
5de0409e | 813 | |
763c7aa2 | 814 | r = parse_argv(argc, argv, matches); |
2fb7a5ce | 815 | if (r < 0) |
5de0409e ZJS |
816 | goto end; |
817 | ||
818 | if (arg_action == ACTION_NONE) | |
819 | goto end; | |
820 | ||
821 | r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY); | |
822 | if (r < 0) { | |
0a1beeb6 | 823 | log_error_errno(-r, "Failed to open journal: %m"); |
5de0409e ZJS |
824 | goto end; |
825 | } | |
826 | ||
9fe13294 ZJS |
827 | /* We want full data, nothing truncated. */ |
828 | sd_journal_set_data_threshold(j, 0); | |
829 | ||
5de0409e | 830 | SET_FOREACH(match, matches, it) { |
5de0409e ZJS |
831 | r = sd_journal_add_match(j, match, strlen(match)); |
832 | if (r != 0) { | |
833 | log_error("Failed to add match '%s': %s", | |
834 | match, strerror(-r)); | |
835 | goto end; | |
836 | } | |
837 | } | |
838 | ||
6c17bf04 ZJS |
839 | if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) { |
840 | _cleanup_free_ char *filter; | |
841 | ||
842 | filter = journal_make_match_string(j); | |
843 | log_debug("Journal filter: %s", filter); | |
844 | } | |
845 | ||
5de0409e | 846 | switch(arg_action) { |
ada45c78 | 847 | |
5de0409e | 848 | case ACTION_LIST: |
e15758cc | 849 | case ACTION_INFO: |
5de0409e | 850 | if (!arg_no_pager) |
1b12a7b5 | 851 | pager_open(false); |
5de0409e ZJS |
852 | |
853 | r = dump_list(j); | |
854 | break; | |
ada45c78 | 855 | |
5de0409e ZJS |
856 | case ACTION_DUMP: |
857 | r = dump_core(j); | |
858 | break; | |
ada45c78 LP |
859 | |
860 | case ACTION_GDB: | |
861 | r = run_gdb(j); | |
862 | break; | |
863 | ||
864 | default: | |
5de0409e ZJS |
865 | assert_not_reached("Shouldn't be here"); |
866 | } | |
867 | ||
868 | end: | |
5de0409e ZJS |
869 | pager_close(); |
870 | ||
871 | if (output) | |
872 | fclose(output); | |
873 | ||
ada45c78 | 874 | return r >= 0 ? r : EXIT_FAILURE; |
5de0409e | 875 | } |