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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 ZJS |
28 | |
29 | #include <systemd/sd-journal.h> | |
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" |
5de0409e ZJS |
40 | |
41 | static enum { | |
42 | ACTION_NONE, | |
e15758cc | 43 | ACTION_INFO, |
5de0409e ZJS |
44 | ACTION_LIST, |
45 | ACTION_DUMP, | |
ada45c78 | 46 | ACTION_GDB, |
5de0409e | 47 | } arg_action = ACTION_LIST; |
e15758cc | 48 | static const char* arg_field = NULL; |
ccc40358 | 49 | static int arg_no_pager = false; |
9a340880 | 50 | static int arg_no_legend = false; |
0c51aada LP |
51 | static int arg_one = false; |
52 | ||
53 | static FILE* output = NULL; | |
5de0409e ZJS |
54 | |
55 | static Set *new_matches(void) { | |
56 | Set *set; | |
57 | char *tmp; | |
58 | int r; | |
59 | ||
60 | set = set_new(trivial_hash_func, trivial_compare_func); | |
61 | if (!set) { | |
62 | log_oom(); | |
63 | return NULL; | |
64 | } | |
65 | ||
66 | tmp = strdup("MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1"); | |
67 | if (!tmp) { | |
68 | log_oom(); | |
4a207bb2 | 69 | set_free(set); |
5de0409e ZJS |
70 | return NULL; |
71 | } | |
72 | ||
ef42202a | 73 | r = set_consume(set, tmp); |
5de0409e ZJS |
74 | if (r < 0) { |
75 | log_error("failed to add to set: %s", strerror(-r)); | |
4a207bb2 | 76 | set_free(set); |
5de0409e ZJS |
77 | return NULL; |
78 | } | |
79 | ||
80 | return set; | |
81 | } | |
82 | ||
83 | static int help(void) { | |
a276ae74 LP |
84 | |
85 | printf("%s [OPTIONS...]\n\n" | |
5de0409e ZJS |
86 | "List or retrieve coredumps from the journal.\n\n" |
87 | "Flags:\n" | |
31a020ce LP |
88 | " -h --help Show this help\n" |
89 | " --version Print version string\n" | |
a276ae74 | 90 | " --no-pager Do not pipe output into a pager\n" |
31a020ce LP |
91 | " --no-legend Do not print the column headers.\n" |
92 | " -1 Show information about most recent entry only\n" | |
93 | " -F --field=FIELD List all values a certain field takes\n" | |
94 | " -o --output=FILE Write output to FILE\n\n" | |
5de0409e ZJS |
95 | |
96 | "Commands:\n" | |
31a020ce | 97 | " list [MATCHES...] List available coredumps (default)\n" |
e15758cc | 98 | " info [MATCHES...] Show detailed information about one or more coredumps\n" |
a276ae74 LP |
99 | " dump [MATCHES...] Print first matching coredump to stdout\n" |
100 | " gdb [MATCHES...] Start gdb for the first matching coredump\n" | |
5de0409e ZJS |
101 | , program_invocation_short_name); |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
106 | static int add_match(Set *set, const char *match) { | |
107 | int r = -ENOMEM; | |
108 | unsigned pid; | |
109 | const char* prefix; | |
110 | char *pattern = NULL; | |
7fd1b19b | 111 | _cleanup_free_ char *p = NULL; |
5de0409e ZJS |
112 | |
113 | if (strchr(match, '=')) | |
114 | prefix = ""; | |
115 | else if (strchr(match, '/')) { | |
116 | p = path_make_absolute_cwd(match); | |
117 | if (!p) | |
118 | goto fail; | |
119 | ||
120 | match = p; | |
121 | prefix = "COREDUMP_EXE="; | |
122 | } | |
123 | else if (safe_atou(match, &pid) == 0) | |
124 | prefix = "COREDUMP_PID="; | |
125 | else | |
126 | prefix = "COREDUMP_COMM="; | |
127 | ||
128 | pattern = strjoin(prefix, match, NULL); | |
129 | if (!pattern) | |
130 | goto fail; | |
131 | ||
ef42202a | 132 | log_debug("Adding pattern: %s", pattern); |
1b2457e1 | 133 | r = set_put(set, pattern); |
5de0409e | 134 | if (r < 0) { |
ef42202a | 135 | log_error("Failed to add pattern '%s': %s", |
5de0409e | 136 | pattern, strerror(-r)); |
1b2457e1 | 137 | free(pattern); |
5de0409e ZJS |
138 | goto fail; |
139 | } | |
5de0409e ZJS |
140 | |
141 | return 0; | |
142 | fail: | |
ef42202a | 143 | log_error("Failed to add match: %s", strerror(-r)); |
5de0409e ZJS |
144 | return r; |
145 | } | |
146 | ||
763c7aa2 | 147 | static int parse_argv(int argc, char *argv[], Set *matches) { |
5de0409e ZJS |
148 | enum { |
149 | ARG_VERSION = 0x100, | |
150 | ARG_NO_PAGER, | |
9a340880 | 151 | ARG_NO_LEGEND, |
5de0409e ZJS |
152 | }; |
153 | ||
154 | int r, c; | |
155 | ||
156 | static const struct option options[] = { | |
57ce4bd4 ZJS |
157 | { "help", no_argument, NULL, 'h' }, |
158 | { "version" , no_argument, NULL, ARG_VERSION }, | |
159 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
9a340880 | 160 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, |
57ce4bd4 | 161 | { "output", required_argument, NULL, 'o' }, |
4f76ae1b | 162 | { "field", required_argument, NULL, 'F' }, |
eb9da376 | 163 | {} |
5de0409e ZJS |
164 | }; |
165 | ||
166 | assert(argc >= 0); | |
167 | assert(argv); | |
168 | ||
0c51aada | 169 | while ((c = getopt_long(argc, argv, "ho:F:1", options, NULL)) >= 0) |
5de0409e | 170 | switch(c) { |
eb9da376 | 171 | |
5de0409e | 172 | case 'h': |
5de0409e | 173 | arg_action = ACTION_NONE; |
eb9da376 | 174 | return help(); |
5de0409e ZJS |
175 | |
176 | case ARG_VERSION: | |
eb9da376 | 177 | arg_action = ACTION_NONE; |
5de0409e | 178 | puts(PACKAGE_STRING); |
5de0409e | 179 | puts(SYSTEMD_FEATURES); |
5de0409e ZJS |
180 | return 0; |
181 | ||
182 | case ARG_NO_PAGER: | |
183 | arg_no_pager = true; | |
184 | break; | |
185 | ||
9a340880 ZJS |
186 | case ARG_NO_LEGEND: |
187 | arg_no_legend = true; | |
188 | break; | |
189 | ||
5de0409e ZJS |
190 | case 'o': |
191 | if (output) { | |
192 | log_error("cannot set output more than once"); | |
193 | return -EINVAL; | |
194 | } | |
195 | ||
196 | output = fopen(optarg, "we"); | |
197 | if (!output) { | |
198 | log_error("writing to '%s': %m", optarg); | |
199 | return -errno; | |
200 | } | |
201 | ||
202 | break; | |
57ce4bd4 | 203 | |
4f76ae1b | 204 | case 'F': |
a276ae74 | 205 | if (arg_field) { |
4f76ae1b ZJS |
206 | log_error("cannot use --field/-F more than once"); |
207 | return -EINVAL; | |
208 | } | |
a276ae74 | 209 | arg_field = optarg; |
4f76ae1b ZJS |
210 | break; |
211 | ||
0c51aada LP |
212 | case '1': |
213 | arg_one = true; | |
214 | break; | |
215 | ||
57ce4bd4 ZJS |
216 | case '?': |
217 | return -EINVAL; | |
218 | ||
5de0409e | 219 | default: |
eb9da376 | 220 | assert_not_reached("Unhandled option"); |
5de0409e ZJS |
221 | } |
222 | ||
223 | if (optind < argc) { | |
224 | const char *cmd = argv[optind++]; | |
f168c273 | 225 | if (streq(cmd, "list")) |
5de0409e ZJS |
226 | arg_action = ACTION_LIST; |
227 | else if (streq(cmd, "dump")) | |
228 | arg_action = ACTION_DUMP; | |
ada45c78 LP |
229 | else if (streq(cmd, "gdb")) |
230 | arg_action = ACTION_GDB; | |
e15758cc LP |
231 | else if (streq(cmd, "info")) |
232 | arg_action = ACTION_INFO; | |
5de0409e ZJS |
233 | else { |
234 | log_error("Unknown action '%s'", cmd); | |
235 | return -EINVAL; | |
236 | } | |
237 | } | |
238 | ||
a276ae74 | 239 | if (arg_field && arg_action != ACTION_LIST) { |
4f76ae1b ZJS |
240 | log_error("Option --field/-F only makes sense with list"); |
241 | return -EINVAL; | |
242 | } | |
243 | ||
5de0409e ZJS |
244 | while (optind < argc) { |
245 | r = add_match(matches, argv[optind]); | |
246 | if (r != 0) | |
247 | return r; | |
248 | optind++; | |
249 | } | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
8bc8ab83 LP |
254 | static int retrieve(const void *data, |
255 | size_t len, | |
256 | const char *name, | |
a276ae74 | 257 | char **var) { |
5de0409e | 258 | |
4f76ae1b | 259 | size_t ident; |
a276ae74 | 260 | char *v; |
8bc8ab83 | 261 | |
4f76ae1b | 262 | ident = strlen(name) + 1; /* name + "=" */ |
8bc8ab83 | 263 | |
4f76ae1b | 264 | if (len < ident) |
8bc8ab83 | 265 | return 0; |
5de0409e | 266 | |
4f76ae1b | 267 | if (memcmp(data, name, ident - 1) != 0) |
8bc8ab83 LP |
268 | return 0; |
269 | ||
4f76ae1b | 270 | if (((const char*) data)[ident - 1] != '=') |
8bc8ab83 | 271 | return 0; |
5de0409e | 272 | |
a276ae74 LP |
273 | v = strndup((const char*)data + ident, len - ident); |
274 | if (!v) | |
5de0409e ZJS |
275 | return log_oom(); |
276 | ||
a276ae74 LP |
277 | free(*var); |
278 | *var = v; | |
279 | ||
5de0409e ZJS |
280 | return 0; |
281 | } | |
282 | ||
b0b21dce | 283 | #define filename_escape(s) xescape((s), "./ ") |
e15758cc LP |
284 | |
285 | static int make_coredump_path(sd_journal *j, char **ret) { | |
286 | _cleanup_free_ char | |
287 | *pid = NULL, *boot_id = NULL, *tstamp = NULL, *comm = NULL, | |
288 | *p = NULL, *b = NULL, *t = NULL, *c = NULL; | |
289 | const void *d; | |
290 | size_t l; | |
291 | char *fn; | |
292 | ||
293 | assert(j); | |
294 | assert(ret); | |
295 | ||
296 | SD_JOURNAL_FOREACH_DATA(j, d, l) { | |
297 | retrieve(d, l, "COREDUMP_COMM", &comm); | |
298 | retrieve(d, l, "COREDUMP_PID", &pid); | |
299 | retrieve(d, l, "COREDUMP_TIMESTAMP", &tstamp); | |
300 | retrieve(d, l, "_BOOT_ID", &boot_id); | |
301 | } | |
302 | ||
303 | if (!pid || !comm || !tstamp || !boot_id) { | |
304 | log_error("Failed to retrieve necessary fields to find coredump on disk."); | |
305 | return -ENOENT; | |
306 | } | |
307 | ||
308 | p = filename_escape(pid); | |
309 | if (!p) | |
310 | return log_oom(); | |
311 | ||
312 | t = filename_escape(tstamp); | |
313 | if (!t) | |
314 | return log_oom(); | |
315 | ||
316 | c = filename_escape(comm); | |
317 | if (!t) | |
318 | return log_oom(); | |
319 | ||
320 | b = filename_escape(boot_id); | |
321 | if (!b) | |
322 | return log_oom(); | |
323 | ||
324 | fn = strjoin("/var/lib/systemd/coredump/core.", c, ".", b, ".", p, ".", t, NULL); | |
325 | if (!fn) | |
326 | return log_oom(); | |
327 | ||
328 | *ret = fn; | |
329 | return 0; | |
330 | } | |
331 | ||
4f76ae1b | 332 | static void print_field(FILE* file, sd_journal *j) { |
a276ae74 | 333 | _cleanup_free_ char *value = NULL; |
4f76ae1b ZJS |
334 | const void *d; |
335 | size_t l; | |
336 | ||
e15758cc LP |
337 | assert(file); |
338 | assert(j); | |
339 | ||
a276ae74 | 340 | assert(arg_field); |
4f76ae1b ZJS |
341 | |
342 | SD_JOURNAL_FOREACH_DATA(j, d, l) | |
a276ae74 LP |
343 | retrieve(d, l, arg_field, &value); |
344 | ||
4f76ae1b ZJS |
345 | if (value) |
346 | fprintf(file, "%s\n", value); | |
347 | } | |
348 | ||
e15758cc | 349 | static int print_list(FILE* file, sd_journal *j, int had_legend) { |
a276ae74 | 350 | _cleanup_free_ char |
5de0409e | 351 | *pid = NULL, *uid = NULL, *gid = NULL, |
a276ae74 | 352 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL; |
8bc8ab83 LP |
353 | const void *d; |
354 | size_t l; | |
684341b0 LP |
355 | usec_t t; |
356 | char buf[FORMAT_TIMESTAMP_MAX]; | |
357 | int r; | |
8bc8ab83 | 358 | |
e15758cc LP |
359 | assert(file); |
360 | assert(j); | |
361 | ||
8bc8ab83 | 362 | SD_JOURNAL_FOREACH_DATA(j, d, l) { |
8bc8ab83 LP |
363 | retrieve(d, l, "COREDUMP_PID", &pid); |
364 | retrieve(d, l, "COREDUMP_UID", &uid); | |
365 | retrieve(d, l, "COREDUMP_GID", &gid); | |
366 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
367 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
a276ae74 LP |
368 | retrieve(d, l, "COREDUMP_COMM", &comm); |
369 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
8bc8ab83 | 370 | } |
5de0409e | 371 | |
a276ae74 | 372 | if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline) { |
684341b0 LP |
373 | log_warning("Empty coredump log entry"); |
374 | return -EINVAL; | |
375 | } | |
376 | ||
377 | r = sd_journal_get_realtime_usec(j, &t); | |
378 | if (r < 0) { | |
379 | log_error("Failed to get realtime timestamp: %s", strerror(-r)); | |
380 | return r; | |
5de0409e ZJS |
381 | } |
382 | ||
684341b0 LP |
383 | format_timestamp(buf, sizeof(buf), t); |
384 | ||
9a340880 | 385 | if (!had_legend && !arg_no_legend) |
684341b0 | 386 | fprintf(file, "%-*s %*s %*s %*s %*s %s\n", |
c3f84106 | 387 | FORMAT_TIMESTAMP_WIDTH, "TIME", |
5de0409e ZJS |
388 | 6, "PID", |
389 | 5, "UID", | |
390 | 5, "GID", | |
684341b0 LP |
391 | 3, "SIG", |
392 | "EXE"); | |
5de0409e | 393 | |
c3f84106 LP |
394 | fprintf(file, "%-*s %*s %*s %*s %*s %s\n", |
395 | FORMAT_TIMESTAMP_WIDTH, buf, | |
a276ae74 LP |
396 | 6, strna(pid), |
397 | 5, strna(uid), | |
398 | 5, strna(gid), | |
399 | 3, strna(sgnl), | |
400 | strna(exe ?: (comm ?: cmdline))); | |
684341b0 LP |
401 | |
402 | return 0; | |
5de0409e ZJS |
403 | } |
404 | ||
e15758cc LP |
405 | static int print_info(FILE *file, sd_journal *j, bool need_space) { |
406 | _cleanup_free_ char | |
407 | *pid = NULL, *uid = NULL, *gid = NULL, | |
408 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, | |
409 | *unit = NULL, *user_unit = NULL, *session = NULL, | |
a035f819 | 410 | *boot_id = NULL, *machine_id = NULL, *hostname = NULL, |
8d4e028f | 411 | *coredump = NULL, *slice = NULL, *cgroup = NULL, |
4b8cbe9a | 412 | *owner_uid = NULL, *message = NULL, *timestamp = NULL; |
e15758cc LP |
413 | const void *d; |
414 | size_t l; | |
4b8cbe9a | 415 | int r; |
e15758cc LP |
416 | |
417 | assert(file); | |
418 | assert(j); | |
419 | ||
420 | SD_JOURNAL_FOREACH_DATA(j, d, l) { | |
421 | retrieve(d, l, "COREDUMP_PID", &pid); | |
422 | retrieve(d, l, "COREDUMP_UID", &uid); | |
423 | retrieve(d, l, "COREDUMP_GID", &gid); | |
424 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
425 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
426 | retrieve(d, l, "COREDUMP_COMM", &comm); | |
427 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
428 | retrieve(d, l, "COREDUMP_UNIT", &unit); | |
429 | retrieve(d, l, "COREDUMP_USER_UNIT", &user_unit); | |
430 | retrieve(d, l, "COREDUMP_SESSION", &session); | |
a035f819 LP |
431 | retrieve(d, l, "COREDUMP_OWNER_UID", &owner_uid); |
432 | retrieve(d, l, "COREDUMP_SLICE", &slice); | |
433 | retrieve(d, l, "COREDUMP_CGROUP", &cgroup); | |
4b8cbe9a | 434 | retrieve(d, l, "COREDUMP_TIMESTAMP", ×tamp); |
e15758cc LP |
435 | retrieve(d, l, "_BOOT_ID", &boot_id); |
436 | retrieve(d, l, "_MACHINE_ID", &machine_id); | |
437 | retrieve(d, l, "_HOSTNAME", &hostname); | |
8d4e028f | 438 | retrieve(d, l, "MESSAGE", &message); |
e15758cc LP |
439 | } |
440 | ||
441 | if (need_space) | |
442 | fputs("\n", file); | |
443 | ||
81cef14f LP |
444 | if (comm) |
445 | fprintf(file, | |
446 | " PID: %s%s%s (%s)\n", | |
447 | ansi_highlight(), strna(pid), ansi_highlight_off(), comm); | |
448 | else | |
449 | fprintf(file, | |
450 | " PID: %s%s%s\n", | |
451 | ansi_highlight(), strna(pid), ansi_highlight_off()); | |
a035f819 LP |
452 | |
453 | if (uid) { | |
454 | uid_t n; | |
455 | ||
456 | if (parse_uid(uid, &n) >= 0) { | |
457 | _cleanup_free_ char *u = NULL; | |
458 | ||
459 | u = uid_to_name(n); | |
460 | fprintf(file, | |
461 | " UID: %s (%s)\n", | |
462 | uid, u); | |
463 | } else { | |
464 | fprintf(file, | |
465 | " UID: %s\n", | |
466 | uid); | |
467 | } | |
468 | } | |
469 | ||
470 | if (gid) { | |
471 | gid_t n; | |
472 | ||
473 | if (parse_gid(gid, &n) >= 0) { | |
474 | _cleanup_free_ char *g = NULL; | |
475 | ||
476 | g = gid_to_name(n); | |
477 | fprintf(file, | |
478 | " GID: %s (%s)\n", | |
479 | gid, g); | |
480 | } else { | |
481 | fprintf(file, | |
482 | " GID: %s\n", | |
483 | gid); | |
484 | } | |
485 | } | |
e15758cc LP |
486 | |
487 | if (sgnl) { | |
488 | int sig; | |
489 | ||
490 | if (safe_atoi(sgnl, &sig) >= 0) | |
491 | fprintf(file, " Signal: %s (%s)\n", sgnl, signal_to_string(sig)); | |
492 | else | |
493 | fprintf(file, " Signal: %s\n", sgnl); | |
494 | } | |
495 | ||
4b8cbe9a LP |
496 | if (timestamp) { |
497 | usec_t u; | |
498 | ||
499 | r = safe_atou64(timestamp, &u); | |
500 | if (r >= 0) { | |
501 | char absolute[FORMAT_TIMESTAMP_MAX], relative[FORMAT_TIMESPAN_MAX]; | |
502 | ||
503 | fprintf(file, | |
504 | " Timestamp: %s (%s)\n", | |
505 | format_timestamp(absolute, sizeof(absolute), u), | |
506 | format_timestamp_relative(relative, sizeof(relative), u)); | |
507 | ||
508 | } else | |
509 | fprintf(file, " Timestamp: %s\n", timestamp); | |
510 | } | |
511 | ||
e15758cc LP |
512 | if (cmdline) |
513 | fprintf(file, " Command Line: %s\n", cmdline); | |
81cef14f LP |
514 | if (exe) |
515 | fprintf(file, " Executable: %s%s%s\n", ansi_highlight(), exe, ansi_highlight_off()); | |
a035f819 LP |
516 | if (cgroup) |
517 | fprintf(file, " Control Group: %s\n", cgroup); | |
e15758cc LP |
518 | if (unit) |
519 | fprintf(file, " Unit: %s\n", unit); | |
520 | if (user_unit) | |
521 | fprintf(file, " User Unit: %s\n", unit); | |
a035f819 LP |
522 | if (slice) |
523 | fprintf(file, " Slice: %s\n", slice); | |
e15758cc LP |
524 | if (session) |
525 | fprintf(file, " Session: %s\n", session); | |
a035f819 LP |
526 | if (owner_uid) { |
527 | uid_t n; | |
528 | ||
529 | if (parse_uid(owner_uid, &n) >= 0) { | |
530 | _cleanup_free_ char *u = NULL; | |
531 | ||
532 | u = uid_to_name(n); | |
533 | fprintf(file, | |
534 | " Owner UID: %s (%s)\n", | |
535 | owner_uid, u); | |
536 | } else { | |
537 | fprintf(file, | |
538 | " Owner UID: %s\n", | |
539 | owner_uid); | |
540 | } | |
541 | } | |
e15758cc LP |
542 | if (boot_id) |
543 | fprintf(file, " Boot ID: %s\n", boot_id); | |
544 | if (machine_id) | |
545 | fprintf(file, " Machine ID: %s\n", machine_id); | |
546 | if (hostname) | |
547 | fprintf(file, " Hostname: %s\n", hostname); | |
548 | ||
549 | if (make_coredump_path(j, &coredump) >= 0) | |
550 | if (access(coredump, F_OK) >= 0) | |
551 | fprintf(file, " Coredump: %s\n", coredump); | |
552 | ||
8d4e028f LP |
553 | if (message) { |
554 | _cleanup_free_ char *m = NULL; | |
555 | ||
556 | m = strreplace(message, "\n", "\n "); | |
557 | ||
558 | fprintf(file, " Message: %s\n", strstrip(m ?: message)); | |
559 | } | |
560 | ||
e15758cc LP |
561 | return 0; |
562 | } | |
563 | ||
ada45c78 | 564 | static int focus(sd_journal *j) { |
5de0409e ZJS |
565 | int r; |
566 | ||
5de0409e ZJS |
567 | r = sd_journal_seek_tail(j); |
568 | if (r == 0) | |
569 | r = sd_journal_previous(j); | |
570 | if (r < 0) { | |
571 | log_error("Failed to search journal: %s", strerror(-r)); | |
572 | return r; | |
573 | } | |
8bc8ab83 | 574 | if (r == 0) { |
0c51aada | 575 | log_error("No match found."); |
8bc8ab83 LP |
576 | return -ESRCH; |
577 | } | |
ada45c78 LP |
578 | return r; |
579 | } | |
5de0409e | 580 | |
0c51aada LP |
581 | static void print_entry(sd_journal *j, unsigned n_found) { |
582 | assert(j); | |
583 | ||
584 | if (arg_action == ACTION_INFO) | |
585 | print_info(stdout, j, n_found); | |
586 | else if (arg_field) | |
587 | print_field(stdout, j); | |
588 | else | |
589 | print_list(stdout, j, n_found); | |
590 | } | |
591 | ||
592 | static int dump_list(sd_journal *j) { | |
593 | unsigned n_found = 0; | |
594 | int r; | |
595 | ||
596 | assert(j); | |
597 | ||
598 | /* The coredumps are likely to compressed, and for just | |
599 | * listing them we don't need to decompress them, so let's | |
600 | * pick a fairly low data threshold here */ | |
601 | sd_journal_set_data_threshold(j, 4096); | |
602 | ||
603 | if (arg_one) { | |
604 | r = focus(j); | |
605 | if (r < 0) | |
606 | return r; | |
607 | ||
608 | print_entry(j, 0); | |
609 | } else { | |
610 | SD_JOURNAL_FOREACH(j) | |
611 | print_entry(j, n_found++); | |
612 | ||
613 | if (!arg_field && n_found <= 0) { | |
614 | log_notice("No coredumps found."); | |
615 | return -ESRCH; | |
616 | } | |
617 | } | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
ada45c78 LP |
622 | static int dump_core(sd_journal* j) { |
623 | const void *data; | |
624 | size_t len, ret; | |
625 | int r; | |
626 | ||
627 | assert(j); | |
628 | ||
93b73b06 LP |
629 | /* We want full data, nothing truncated. */ |
630 | sd_journal_set_data_threshold(j, 0); | |
631 | ||
ada45c78 LP |
632 | r = focus(j); |
633 | if (r < 0) | |
5de0409e | 634 | return r; |
5de0409e | 635 | |
e15758cc | 636 | print_info(output ? stdout : stderr, j, false); |
5de0409e ZJS |
637 | |
638 | if (on_tty() && !output) { | |
e15758cc | 639 | log_error("Refusing to dump core to tty."); |
5de0409e ZJS |
640 | return -ENOTTY; |
641 | } | |
642 | ||
ada45c78 | 643 | r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len); |
a276ae74 LP |
644 | if (r == ENOENT) { |
645 | _cleanup_free_ char *fn = NULL; | |
646 | _cleanup_close_ int fd = -1; | |
647 | ||
648 | r = make_coredump_path(j, &fn); | |
649 | if (r < 0) | |
650 | return r; | |
651 | ||
652 | fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
653 | if (fd < 0) { | |
654 | if (errno == ENOENT) | |
655 | log_error("Coredump neither in journal file nor stored externally on disk."); | |
656 | else | |
657 | log_error("Failed to open coredump file: %s", strerror(-r)); | |
658 | ||
659 | return -errno; | |
660 | } | |
661 | ||
93240d3a | 662 | r = copy_bytes(fd, output ? fileno(output) : STDOUT_FILENO, (off_t) -1); |
a276ae74 LP |
663 | if (r < 0) { |
664 | log_error("Failed to stream coredump: %s", strerror(-r)); | |
665 | return r; | |
666 | } | |
667 | ||
668 | } else if (r < 0) { | |
ada45c78 LP |
669 | log_error("Failed to retrieve COREDUMP field: %s", strerror(-r)); |
670 | return r; | |
ada45c78 | 671 | |
a276ae74 LP |
672 | } else { |
673 | assert(len >= 9); | |
674 | data = (const uint8_t*) data + 9; | |
675 | len -= 9; | |
5de0409e | 676 | |
a276ae74 LP |
677 | ret = fwrite(data, len, 1, output ?: stdout); |
678 | if (ret != 1) { | |
679 | log_error("Dumping coredump failed: %m (%zu)", ret); | |
680 | return -errno; | |
681 | } | |
5de0409e ZJS |
682 | } |
683 | ||
684 | r = sd_journal_previous(j); | |
685 | if (r >= 0) | |
9f6445e3 | 686 | log_warning("More than one entry matches, ignoring rest."); |
5de0409e ZJS |
687 | |
688 | return 0; | |
689 | } | |
690 | ||
ada45c78 | 691 | static int run_gdb(sd_journal *j) { |
a276ae74 LP |
692 | |
693 | _cleanup_free_ char *exe = NULL, *coredump = NULL; | |
694 | char temp[] = "/var/tmp/coredump-XXXXXX"; | |
695 | bool unlink_temp = false; | |
696 | const char *path; | |
ada45c78 | 697 | const void *data; |
a276ae74 | 698 | siginfo_t st; |
ada45c78 | 699 | size_t len; |
ada45c78 | 700 | pid_t pid; |
ada45c78 | 701 | int r; |
ada45c78 LP |
702 | |
703 | assert(j); | |
704 | ||
93b73b06 LP |
705 | sd_journal_set_data_threshold(j, 0); |
706 | ||
ada45c78 LP |
707 | r = focus(j); |
708 | if (r < 0) | |
709 | return r; | |
710 | ||
e15758cc LP |
711 | print_info(stdout, j, false); |
712 | fputs("\n", stdout); | |
ada45c78 LP |
713 | |
714 | r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len); | |
715 | if (r < 0) { | |
716 | log_error("Failed to retrieve COREDUMP_EXE field: %s", strerror(-r)); | |
717 | return r; | |
718 | } | |
719 | ||
720 | assert(len >= 13); | |
721 | data = (const uint8_t*) data + 13; | |
722 | len -= 13; | |
723 | ||
724 | exe = strndup(data, len); | |
725 | if (!exe) | |
726 | return log_oom(); | |
727 | ||
728 | if (endswith(exe, " (deleted)")) { | |
729 | log_error("Binary already deleted."); | |
730 | return -ENOENT; | |
731 | } | |
732 | ||
a276ae74 LP |
733 | if (!path_is_absolute(exe)) { |
734 | log_error("Binary is not an absolute path."); | |
735 | return -ENOENT; | |
736 | } | |
737 | ||
ada45c78 | 738 | r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len); |
a276ae74 LP |
739 | if (r == -ENOENT) { |
740 | ||
741 | r = make_coredump_path(j, &coredump); | |
742 | if (r < 0) | |
743 | return r; | |
744 | ||
745 | if (access(coredump, R_OK) < 0) { | |
746 | if (errno == ENOENT) | |
747 | log_error("Coredump neither in journal file nor stored externally on disk."); | |
748 | else | |
8d4e028f | 749 | log_error("Failed to access coredump file: %m"); |
a276ae74 LP |
750 | |
751 | return -errno; | |
752 | } | |
753 | ||
754 | path = coredump; | |
755 | ||
756 | } else if (r < 0) { | |
ada45c78 LP |
757 | log_error("Failed to retrieve COREDUMP field: %s", strerror(-r)); |
758 | return r; | |
ada45c78 | 759 | |
a276ae74 LP |
760 | } else { |
761 | _cleanup_close_ int fd = -1; | |
762 | ssize_t sz; | |
ada45c78 | 763 | |
a276ae74 LP |
764 | assert(len >= 9); |
765 | data = (const uint8_t*) data + 9; | |
766 | len -= 9; | |
ada45c78 | 767 | |
a276ae74 LP |
768 | fd = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC); |
769 | if (fd < 0) { | |
770 | log_error("Failed to create temporary file: %m"); | |
771 | return -errno; | |
772 | } | |
773 | ||
774 | unlink_temp = true; | |
775 | ||
776 | sz = write(fd, data, len); | |
777 | if (sz < 0) { | |
778 | log_error("Failed to write temporary file: %m"); | |
779 | r = -errno; | |
780 | goto finish; | |
781 | } | |
782 | if (sz != (ssize_t) len) { | |
783 | log_error("Short write to temporary file."); | |
784 | r = -EIO; | |
785 | goto finish; | |
786 | } | |
ada45c78 | 787 | |
a276ae74 LP |
788 | path = temp; |
789 | } | |
ada45c78 LP |
790 | |
791 | pid = fork(); | |
792 | if (pid < 0) { | |
793 | log_error("Failed to fork(): %m"); | |
794 | r = -errno; | |
795 | goto finish; | |
796 | } | |
797 | if (pid == 0) { | |
798 | execlp("gdb", "gdb", exe, path, NULL); | |
a276ae74 | 799 | |
ada45c78 LP |
800 | log_error("Failed to invoke gdb: %m"); |
801 | _exit(1); | |
802 | } | |
803 | ||
804 | r = wait_for_terminate(pid, &st); | |
805 | if (r < 0) { | |
806 | log_error("Failed to wait for gdb: %m"); | |
807 | goto finish; | |
808 | } | |
809 | ||
810 | r = st.si_code == CLD_EXITED ? st.si_status : 255; | |
811 | ||
812 | finish: | |
a276ae74 LP |
813 | if (unlink_temp) |
814 | unlink(temp); | |
815 | ||
ada45c78 LP |
816 | return r; |
817 | } | |
818 | ||
5de0409e | 819 | int main(int argc, char *argv[]) { |
7fd1b19b | 820 | _cleanup_journal_close_ sd_journal*j = NULL; |
5de0409e ZJS |
821 | const char* match; |
822 | Iterator it; | |
823 | int r = 0; | |
7fd1b19b | 824 | _cleanup_set_free_free_ Set *matches = NULL; |
5de0409e | 825 | |
a9cdc94f | 826 | setlocale(LC_ALL, ""); |
5de0409e ZJS |
827 | log_parse_environment(); |
828 | log_open(); | |
829 | ||
830 | matches = new_matches(); | |
2fb7a5ce ZJS |
831 | if (!matches) { |
832 | r = -ENOMEM; | |
5de0409e | 833 | goto end; |
2fb7a5ce | 834 | } |
5de0409e | 835 | |
763c7aa2 | 836 | r = parse_argv(argc, argv, matches); |
2fb7a5ce | 837 | if (r < 0) |
5de0409e ZJS |
838 | goto end; |
839 | ||
840 | if (arg_action == ACTION_NONE) | |
841 | goto end; | |
842 | ||
843 | r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY); | |
844 | if (r < 0) { | |
845 | log_error("Failed to open journal: %s", strerror(-r)); | |
846 | goto end; | |
847 | } | |
848 | ||
849 | SET_FOREACH(match, matches, it) { | |
5de0409e ZJS |
850 | r = sd_journal_add_match(j, match, strlen(match)); |
851 | if (r != 0) { | |
852 | log_error("Failed to add match '%s': %s", | |
853 | match, strerror(-r)); | |
854 | goto end; | |
855 | } | |
856 | } | |
857 | ||
6c17bf04 ZJS |
858 | if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) { |
859 | _cleanup_free_ char *filter; | |
860 | ||
861 | filter = journal_make_match_string(j); | |
862 | log_debug("Journal filter: %s", filter); | |
863 | } | |
864 | ||
5de0409e | 865 | switch(arg_action) { |
ada45c78 | 866 | |
5de0409e | 867 | case ACTION_LIST: |
e15758cc | 868 | case ACTION_INFO: |
5de0409e | 869 | if (!arg_no_pager) |
1b12a7b5 | 870 | pager_open(false); |
5de0409e ZJS |
871 | |
872 | r = dump_list(j); | |
873 | break; | |
ada45c78 | 874 | |
5de0409e ZJS |
875 | case ACTION_DUMP: |
876 | r = dump_core(j); | |
877 | break; | |
ada45c78 LP |
878 | |
879 | case ACTION_GDB: | |
880 | r = run_gdb(j); | |
881 | break; | |
882 | ||
883 | default: | |
5de0409e ZJS |
884 | assert_not_reached("Shouldn't be here"); |
885 | } | |
886 | ||
887 | end: | |
5de0409e ZJS |
888 | pager_close(); |
889 | ||
890 | if (output) | |
891 | fclose(output); | |
892 | ||
ada45c78 | 893 | return r >= 0 ? r : EXIT_FAILURE; |
5de0409e | 894 | } |