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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 | |
2cf4172a | 29 | #include "sd-journal.h" |
5de0409e ZJS |
30 | #include "build.h" |
31 | #include "set.h" | |
32 | #include "util.h" | |
33 | #include "log.h" | |
34 | #include "path-util.h" | |
35 | #include "pager.h" | |
763c7aa2 | 36 | #include "macro.h" |
dfb33a97 | 37 | #include "journal-internal.h" |
9fe13294 | 38 | #include "compress.h" |
2cf4172a | 39 | #include "sigbus.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 | 51 | static int arg_one = false; |
3774cf57 | 52 | static FILE* arg_output = NULL; |
5de0409e ZJS |
53 | |
54 | static Set *new_matches(void) { | |
55 | Set *set; | |
56 | char *tmp; | |
57 | int r; | |
58 | ||
d5099efc | 59 | set = set_new(NULL); |
5de0409e ZJS |
60 | if (!set) { |
61 | log_oom(); | |
62 | return NULL; | |
63 | } | |
64 | ||
65 | tmp = strdup("MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1"); | |
66 | if (!tmp) { | |
67 | log_oom(); | |
4a207bb2 | 68 | set_free(set); |
5de0409e ZJS |
69 | return NULL; |
70 | } | |
71 | ||
ef42202a | 72 | r = set_consume(set, tmp); |
5de0409e | 73 | if (r < 0) { |
da927ba9 | 74 | log_error_errno(r, "failed to add to set: %m"); |
4a207bb2 | 75 | set_free(set); |
5de0409e ZJS |
76 | return NULL; |
77 | } | |
78 | ||
79 | return set; | |
80 | } | |
81 | ||
5de0409e ZJS |
82 | static int add_match(Set *set, const char *match) { |
83 | int r = -ENOMEM; | |
84 | unsigned pid; | |
85 | const char* prefix; | |
86 | char *pattern = NULL; | |
7fd1b19b | 87 | _cleanup_free_ char *p = NULL; |
5de0409e ZJS |
88 | |
89 | if (strchr(match, '=')) | |
90 | prefix = ""; | |
91 | else if (strchr(match, '/')) { | |
92 | p = path_make_absolute_cwd(match); | |
93 | if (!p) | |
94 | goto fail; | |
95 | ||
96 | match = p; | |
97 | prefix = "COREDUMP_EXE="; | |
98 | } | |
99 | else if (safe_atou(match, &pid) == 0) | |
100 | prefix = "COREDUMP_PID="; | |
101 | else | |
102 | prefix = "COREDUMP_COMM="; | |
103 | ||
104 | pattern = strjoin(prefix, match, NULL); | |
105 | if (!pattern) | |
106 | goto fail; | |
107 | ||
ef42202a | 108 | log_debug("Adding pattern: %s", pattern); |
f7a5bb28 | 109 | r = set_consume(set, pattern); |
5de0409e | 110 | if (r < 0) { |
da927ba9 | 111 | log_error_errno(r, "Failed to add pattern: %m"); |
5de0409e ZJS |
112 | goto fail; |
113 | } | |
5de0409e ZJS |
114 | |
115 | return 0; | |
116 | fail: | |
23bbb0de | 117 | return log_error_errno(r, "Failed to add match: %m"); |
5de0409e ZJS |
118 | } |
119 | ||
601185b4 ZJS |
120 | static void help(void) { |
121 | printf("%s [OPTIONS...]\n\n" | |
122 | "List or retrieve coredumps from the journal.\n\n" | |
123 | "Flags:\n" | |
124 | " -h --help Show this help\n" | |
125 | " --version Print version string\n" | |
126 | " --no-pager Do not pipe output into a pager\n" | |
127 | " --no-legend Do not print the column headers.\n" | |
128 | " -1 Show information about most recent entry only\n" | |
129 | " -F --field=FIELD List all values a certain field takes\n" | |
130 | " -o --output=FILE Write output to FILE\n\n" | |
131 | ||
132 | "Commands:\n" | |
133 | " list [MATCHES...] List available coredumps (default)\n" | |
134 | " info [MATCHES...] Show detailed information about one or more coredumps\n" | |
135 | " dump [MATCHES...] Print first matching coredump to stdout\n" | |
136 | " gdb [MATCHES...] Start gdb for the first matching coredump\n" | |
137 | , program_invocation_short_name); | |
138 | } | |
139 | ||
763c7aa2 | 140 | static int parse_argv(int argc, char *argv[], Set *matches) { |
5de0409e ZJS |
141 | enum { |
142 | ARG_VERSION = 0x100, | |
143 | ARG_NO_PAGER, | |
9a340880 | 144 | ARG_NO_LEGEND, |
5de0409e ZJS |
145 | }; |
146 | ||
147 | int r, c; | |
148 | ||
149 | static const struct option options[] = { | |
57ce4bd4 ZJS |
150 | { "help", no_argument, NULL, 'h' }, |
151 | { "version" , no_argument, NULL, ARG_VERSION }, | |
152 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
9a340880 | 153 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, |
57ce4bd4 | 154 | { "output", required_argument, NULL, 'o' }, |
4f76ae1b | 155 | { "field", required_argument, NULL, 'F' }, |
eb9da376 | 156 | {} |
5de0409e ZJS |
157 | }; |
158 | ||
159 | assert(argc >= 0); | |
160 | assert(argv); | |
161 | ||
0c51aada | 162 | while ((c = getopt_long(argc, argv, "ho:F:1", options, NULL)) >= 0) |
5de0409e | 163 | switch(c) { |
eb9da376 | 164 | |
5de0409e | 165 | case 'h': |
5de0409e | 166 | arg_action = ACTION_NONE; |
601185b4 ZJS |
167 | help(); |
168 | return 0; | |
5de0409e ZJS |
169 | |
170 | case ARG_VERSION: | |
eb9da376 | 171 | arg_action = ACTION_NONE; |
5de0409e | 172 | puts(PACKAGE_STRING); |
5de0409e | 173 | puts(SYSTEMD_FEATURES); |
5de0409e ZJS |
174 | return 0; |
175 | ||
176 | case ARG_NO_PAGER: | |
177 | arg_no_pager = true; | |
178 | break; | |
179 | ||
9a340880 ZJS |
180 | case ARG_NO_LEGEND: |
181 | arg_no_legend = true; | |
182 | break; | |
183 | ||
5de0409e | 184 | case 'o': |
3774cf57 | 185 | if (arg_output) { |
5de0409e ZJS |
186 | log_error("cannot set output more than once"); |
187 | return -EINVAL; | |
188 | } | |
189 | ||
3774cf57 LP |
190 | arg_output = fopen(optarg, "we"); |
191 | if (!arg_output) | |
4a62c710 | 192 | return log_error_errno(errno, "writing to '%s': %m", optarg); |
5de0409e ZJS |
193 | |
194 | break; | |
57ce4bd4 | 195 | |
4f76ae1b | 196 | case 'F': |
a276ae74 | 197 | if (arg_field) { |
4f76ae1b ZJS |
198 | log_error("cannot use --field/-F more than once"); |
199 | return -EINVAL; | |
200 | } | |
a276ae74 | 201 | arg_field = optarg; |
4f76ae1b ZJS |
202 | break; |
203 | ||
0c51aada LP |
204 | case '1': |
205 | arg_one = true; | |
206 | break; | |
207 | ||
57ce4bd4 ZJS |
208 | case '?': |
209 | return -EINVAL; | |
210 | ||
5de0409e | 211 | default: |
eb9da376 | 212 | assert_not_reached("Unhandled option"); |
5de0409e ZJS |
213 | } |
214 | ||
215 | if (optind < argc) { | |
216 | const char *cmd = argv[optind++]; | |
f168c273 | 217 | if (streq(cmd, "list")) |
5de0409e ZJS |
218 | arg_action = ACTION_LIST; |
219 | else if (streq(cmd, "dump")) | |
220 | arg_action = ACTION_DUMP; | |
ada45c78 LP |
221 | else if (streq(cmd, "gdb")) |
222 | arg_action = ACTION_GDB; | |
e15758cc LP |
223 | else if (streq(cmd, "info")) |
224 | arg_action = ACTION_INFO; | |
5de0409e ZJS |
225 | else { |
226 | log_error("Unknown action '%s'", cmd); | |
227 | return -EINVAL; | |
228 | } | |
229 | } | |
230 | ||
a276ae74 | 231 | if (arg_field && arg_action != ACTION_LIST) { |
4f76ae1b ZJS |
232 | log_error("Option --field/-F only makes sense with list"); |
233 | return -EINVAL; | |
234 | } | |
235 | ||
5de0409e ZJS |
236 | while (optind < argc) { |
237 | r = add_match(matches, argv[optind]); | |
238 | if (r != 0) | |
239 | return r; | |
240 | optind++; | |
241 | } | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
8bc8ab83 LP |
246 | static int retrieve(const void *data, |
247 | size_t len, | |
248 | const char *name, | |
a276ae74 | 249 | char **var) { |
5de0409e | 250 | |
4f76ae1b | 251 | size_t ident; |
a276ae74 | 252 | char *v; |
8bc8ab83 | 253 | |
4f76ae1b | 254 | ident = strlen(name) + 1; /* name + "=" */ |
8bc8ab83 | 255 | |
4f76ae1b | 256 | if (len < ident) |
8bc8ab83 | 257 | return 0; |
5de0409e | 258 | |
4f76ae1b | 259 | if (memcmp(data, name, ident - 1) != 0) |
8bc8ab83 LP |
260 | return 0; |
261 | ||
4f76ae1b | 262 | if (((const char*) data)[ident - 1] != '=') |
8bc8ab83 | 263 | return 0; |
5de0409e | 264 | |
a276ae74 LP |
265 | v = strndup((const char*)data + ident, len - ident); |
266 | if (!v) | |
5de0409e ZJS |
267 | return log_oom(); |
268 | ||
a276ae74 LP |
269 | free(*var); |
270 | *var = v; | |
271 | ||
5de0409e ZJS |
272 | return 0; |
273 | } | |
274 | ||
4f76ae1b | 275 | static void print_field(FILE* file, sd_journal *j) { |
a276ae74 | 276 | _cleanup_free_ char *value = NULL; |
4f76ae1b ZJS |
277 | const void *d; |
278 | size_t l; | |
279 | ||
e15758cc LP |
280 | assert(file); |
281 | assert(j); | |
282 | ||
a276ae74 | 283 | assert(arg_field); |
4f76ae1b ZJS |
284 | |
285 | SD_JOURNAL_FOREACH_DATA(j, d, l) | |
a276ae74 LP |
286 | retrieve(d, l, arg_field, &value); |
287 | ||
4f76ae1b ZJS |
288 | if (value) |
289 | fprintf(file, "%s\n", value); | |
290 | } | |
291 | ||
e15758cc | 292 | static int print_list(FILE* file, sd_journal *j, int had_legend) { |
a276ae74 | 293 | _cleanup_free_ char |
5de0409e | 294 | *pid = NULL, *uid = NULL, *gid = NULL, |
9fe13294 ZJS |
295 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, |
296 | *filename = NULL; | |
8bc8ab83 LP |
297 | const void *d; |
298 | size_t l; | |
684341b0 LP |
299 | usec_t t; |
300 | char buf[FORMAT_TIMESTAMP_MAX]; | |
301 | int r; | |
9fe13294 | 302 | bool present; |
8bc8ab83 | 303 | |
e15758cc LP |
304 | assert(file); |
305 | assert(j); | |
306 | ||
8bc8ab83 | 307 | SD_JOURNAL_FOREACH_DATA(j, d, l) { |
8bc8ab83 LP |
308 | retrieve(d, l, "COREDUMP_PID", &pid); |
309 | retrieve(d, l, "COREDUMP_UID", &uid); | |
310 | retrieve(d, l, "COREDUMP_GID", &gid); | |
311 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
312 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
a276ae74 LP |
313 | retrieve(d, l, "COREDUMP_COMM", &comm); |
314 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
9fe13294 | 315 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
8bc8ab83 | 316 | } |
5de0409e | 317 | |
9fe13294 | 318 | if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline && !filename) { |
684341b0 LP |
319 | log_warning("Empty coredump log entry"); |
320 | return -EINVAL; | |
321 | } | |
322 | ||
323 | r = sd_journal_get_realtime_usec(j, &t); | |
23bbb0de MS |
324 | if (r < 0) |
325 | return log_error_errno(r, "Failed to get realtime timestamp: %m"); | |
5de0409e | 326 | |
684341b0 | 327 | format_timestamp(buf, sizeof(buf), t); |
9fe13294 | 328 | present = filename && access(filename, F_OK) == 0; |
684341b0 | 329 | |
9a340880 | 330 | if (!had_legend && !arg_no_legend) |
9fe13294 | 331 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 332 | FORMAT_TIMESTAMP_WIDTH, "TIME", |
5de0409e ZJS |
333 | 6, "PID", |
334 | 5, "UID", | |
335 | 5, "GID", | |
684341b0 | 336 | 3, "SIG", |
9fe13294 | 337 | 1, "PRESENT", |
684341b0 | 338 | "EXE"); |
5de0409e | 339 | |
9fe13294 | 340 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 341 | FORMAT_TIMESTAMP_WIDTH, buf, |
a276ae74 LP |
342 | 6, strna(pid), |
343 | 5, strna(uid), | |
344 | 5, strna(gid), | |
345 | 3, strna(sgnl), | |
9fe13294 | 346 | 1, present ? "*" : "", |
a276ae74 | 347 | strna(exe ?: (comm ?: cmdline))); |
684341b0 LP |
348 | |
349 | return 0; | |
5de0409e ZJS |
350 | } |
351 | ||
e15758cc LP |
352 | static int print_info(FILE *file, sd_journal *j, bool need_space) { |
353 | _cleanup_free_ char | |
354 | *pid = NULL, *uid = NULL, *gid = NULL, | |
355 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, | |
356 | *unit = NULL, *user_unit = NULL, *session = NULL, | |
a035f819 | 357 | *boot_id = NULL, *machine_id = NULL, *hostname = NULL, |
9fe13294 ZJS |
358 | *slice = NULL, *cgroup = NULL, *owner_uid = NULL, |
359 | *message = NULL, *timestamp = NULL, *filename = NULL; | |
e15758cc LP |
360 | const void *d; |
361 | size_t l; | |
4b8cbe9a | 362 | int r; |
e15758cc LP |
363 | |
364 | assert(file); | |
365 | assert(j); | |
366 | ||
367 | SD_JOURNAL_FOREACH_DATA(j, d, l) { | |
368 | retrieve(d, l, "COREDUMP_PID", &pid); | |
369 | retrieve(d, l, "COREDUMP_UID", &uid); | |
370 | retrieve(d, l, "COREDUMP_GID", &gid); | |
371 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
372 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
373 | retrieve(d, l, "COREDUMP_COMM", &comm); | |
374 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
375 | retrieve(d, l, "COREDUMP_UNIT", &unit); | |
376 | retrieve(d, l, "COREDUMP_USER_UNIT", &user_unit); | |
377 | retrieve(d, l, "COREDUMP_SESSION", &session); | |
a035f819 LP |
378 | retrieve(d, l, "COREDUMP_OWNER_UID", &owner_uid); |
379 | retrieve(d, l, "COREDUMP_SLICE", &slice); | |
380 | retrieve(d, l, "COREDUMP_CGROUP", &cgroup); | |
4b8cbe9a | 381 | retrieve(d, l, "COREDUMP_TIMESTAMP", ×tamp); |
9fe13294 | 382 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
e15758cc LP |
383 | retrieve(d, l, "_BOOT_ID", &boot_id); |
384 | retrieve(d, l, "_MACHINE_ID", &machine_id); | |
385 | retrieve(d, l, "_HOSTNAME", &hostname); | |
8d4e028f | 386 | retrieve(d, l, "MESSAGE", &message); |
e15758cc LP |
387 | } |
388 | ||
389 | if (need_space) | |
390 | fputs("\n", file); | |
391 | ||
81cef14f LP |
392 | if (comm) |
393 | fprintf(file, | |
394 | " PID: %s%s%s (%s)\n", | |
395 | ansi_highlight(), strna(pid), ansi_highlight_off(), comm); | |
396 | else | |
397 | fprintf(file, | |
398 | " PID: %s%s%s\n", | |
399 | ansi_highlight(), strna(pid), ansi_highlight_off()); | |
a035f819 LP |
400 | |
401 | if (uid) { | |
402 | uid_t n; | |
403 | ||
404 | if (parse_uid(uid, &n) >= 0) { | |
405 | _cleanup_free_ char *u = NULL; | |
406 | ||
407 | u = uid_to_name(n); | |
408 | fprintf(file, | |
409 | " UID: %s (%s)\n", | |
410 | uid, u); | |
411 | } else { | |
412 | fprintf(file, | |
413 | " UID: %s\n", | |
414 | uid); | |
415 | } | |
416 | } | |
417 | ||
418 | if (gid) { | |
419 | gid_t n; | |
420 | ||
421 | if (parse_gid(gid, &n) >= 0) { | |
422 | _cleanup_free_ char *g = NULL; | |
423 | ||
424 | g = gid_to_name(n); | |
425 | fprintf(file, | |
426 | " GID: %s (%s)\n", | |
427 | gid, g); | |
428 | } else { | |
429 | fprintf(file, | |
430 | " GID: %s\n", | |
431 | gid); | |
432 | } | |
433 | } | |
e15758cc LP |
434 | |
435 | if (sgnl) { | |
436 | int sig; | |
437 | ||
438 | if (safe_atoi(sgnl, &sig) >= 0) | |
439 | fprintf(file, " Signal: %s (%s)\n", sgnl, signal_to_string(sig)); | |
440 | else | |
441 | fprintf(file, " Signal: %s\n", sgnl); | |
442 | } | |
443 | ||
4b8cbe9a LP |
444 | if (timestamp) { |
445 | usec_t u; | |
446 | ||
447 | r = safe_atou64(timestamp, &u); | |
448 | if (r >= 0) { | |
449 | char absolute[FORMAT_TIMESTAMP_MAX], relative[FORMAT_TIMESPAN_MAX]; | |
450 | ||
451 | fprintf(file, | |
452 | " Timestamp: %s (%s)\n", | |
453 | format_timestamp(absolute, sizeof(absolute), u), | |
454 | format_timestamp_relative(relative, sizeof(relative), u)); | |
455 | ||
456 | } else | |
457 | fprintf(file, " Timestamp: %s\n", timestamp); | |
458 | } | |
459 | ||
e15758cc LP |
460 | if (cmdline) |
461 | fprintf(file, " Command Line: %s\n", cmdline); | |
81cef14f LP |
462 | if (exe) |
463 | fprintf(file, " Executable: %s%s%s\n", ansi_highlight(), exe, ansi_highlight_off()); | |
a035f819 LP |
464 | if (cgroup) |
465 | fprintf(file, " Control Group: %s\n", cgroup); | |
e15758cc LP |
466 | if (unit) |
467 | fprintf(file, " Unit: %s\n", unit); | |
468 | if (user_unit) | |
469 | fprintf(file, " User Unit: %s\n", unit); | |
a035f819 LP |
470 | if (slice) |
471 | fprintf(file, " Slice: %s\n", slice); | |
e15758cc LP |
472 | if (session) |
473 | fprintf(file, " Session: %s\n", session); | |
a035f819 LP |
474 | if (owner_uid) { |
475 | uid_t n; | |
476 | ||
477 | if (parse_uid(owner_uid, &n) >= 0) { | |
478 | _cleanup_free_ char *u = NULL; | |
479 | ||
480 | u = uid_to_name(n); | |
481 | fprintf(file, | |
482 | " Owner UID: %s (%s)\n", | |
483 | owner_uid, u); | |
484 | } else { | |
485 | fprintf(file, | |
486 | " Owner UID: %s\n", | |
487 | owner_uid); | |
488 | } | |
489 | } | |
e15758cc LP |
490 | if (boot_id) |
491 | fprintf(file, " Boot ID: %s\n", boot_id); | |
492 | if (machine_id) | |
493 | fprintf(file, " Machine ID: %s\n", machine_id); | |
494 | if (hostname) | |
495 | fprintf(file, " Hostname: %s\n", hostname); | |
496 | ||
9fe13294 ZJS |
497 | if (filename && access(filename, F_OK) == 0) |
498 | fprintf(file, " Coredump: %s\n", filename); | |
e15758cc | 499 | |
8d4e028f LP |
500 | if (message) { |
501 | _cleanup_free_ char *m = NULL; | |
502 | ||
503 | m = strreplace(message, "\n", "\n "); | |
504 | ||
505 | fprintf(file, " Message: %s\n", strstrip(m ?: message)); | |
506 | } | |
507 | ||
e15758cc LP |
508 | return 0; |
509 | } | |
510 | ||
ada45c78 | 511 | static int focus(sd_journal *j) { |
5de0409e ZJS |
512 | int r; |
513 | ||
5de0409e ZJS |
514 | r = sd_journal_seek_tail(j); |
515 | if (r == 0) | |
516 | r = sd_journal_previous(j); | |
23bbb0de MS |
517 | if (r < 0) |
518 | return log_error_errno(r, "Failed to search journal: %m"); | |
8bc8ab83 | 519 | if (r == 0) { |
0c51aada | 520 | log_error("No match found."); |
8bc8ab83 LP |
521 | return -ESRCH; |
522 | } | |
ada45c78 LP |
523 | return r; |
524 | } | |
5de0409e | 525 | |
0c51aada LP |
526 | static void print_entry(sd_journal *j, unsigned n_found) { |
527 | assert(j); | |
528 | ||
529 | if (arg_action == ACTION_INFO) | |
530 | print_info(stdout, j, n_found); | |
531 | else if (arg_field) | |
532 | print_field(stdout, j); | |
533 | else | |
534 | print_list(stdout, j, n_found); | |
535 | } | |
536 | ||
537 | static int dump_list(sd_journal *j) { | |
538 | unsigned n_found = 0; | |
539 | int r; | |
540 | ||
541 | assert(j); | |
542 | ||
543 | /* The coredumps are likely to compressed, and for just | |
544 | * listing them we don't need to decompress them, so let's | |
545 | * pick a fairly low data threshold here */ | |
546 | sd_journal_set_data_threshold(j, 4096); | |
547 | ||
548 | if (arg_one) { | |
549 | r = focus(j); | |
550 | if (r < 0) | |
551 | return r; | |
552 | ||
553 | print_entry(j, 0); | |
554 | } else { | |
555 | SD_JOURNAL_FOREACH(j) | |
556 | print_entry(j, n_found++); | |
557 | ||
558 | if (!arg_field && n_found <= 0) { | |
559 | log_notice("No coredumps found."); | |
560 | return -ESRCH; | |
561 | } | |
562 | } | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
9fe13294 ZJS |
567 | static int save_core(sd_journal *j, int fd, char **path, bool *unlink_temp) { |
568 | const char *data; | |
569 | _cleanup_free_ char *filename = NULL; | |
570 | size_t len; | |
ada45c78 LP |
571 | int r; |
572 | ||
9fe13294 ZJS |
573 | assert((fd >= 0) != !!path); |
574 | assert(!!path == !!unlink_temp); | |
ada45c78 | 575 | |
9fe13294 ZJS |
576 | /* Prefer uncompressed file to journal (probably cached) to |
577 | * compressed file (probably uncached). */ | |
578 | r = sd_journal_get_data(j, "COREDUMP_FILENAME", (const void**) &data, &len); | |
579 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 580 | log_warning_errno(r, "Failed to retrieve COREDUMP_FILENAME: %m"); |
9fe13294 ZJS |
581 | else if (r == 0) |
582 | retrieve(data, len, "COREDUMP_FILENAME", &filename); | |
93b73b06 | 583 | |
9fe13294 | 584 | if (filename && access(filename, R_OK) < 0) { |
31cda3d1 ZJS |
585 | log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, |
586 | "File %s is not readable: %m", filename); | |
9fe13294 ZJS |
587 | free(filename); |
588 | filename = NULL; | |
5de0409e ZJS |
589 | } |
590 | ||
d89c8fdf | 591 | if (filename && !endswith(filename, ".xz") && !endswith(filename, ".lz4")) { |
d0c8806d TA |
592 | if (path) { |
593 | *path = filename; | |
594 | filename = NULL; | |
595 | } | |
a276ae74 | 596 | |
9fe13294 ZJS |
597 | return 0; |
598 | } else { | |
599 | _cleanup_close_ int fdt = -1; | |
600 | char *temp = NULL; | |
a276ae74 | 601 | |
a276ae74 | 602 | if (fd < 0) { |
9fe13294 ZJS |
603 | temp = strdup("/var/tmp/coredump-XXXXXX"); |
604 | if (!temp) | |
605 | return log_oom(); | |
606 | ||
607 | fdt = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC); | |
4a62c710 MS |
608 | if (fdt < 0) |
609 | return log_error_errno(errno, "Failed to create temporary file: %m"); | |
9fe13294 ZJS |
610 | log_debug("Created temporary file %s", temp); |
611 | ||
612 | fd = fdt; | |
613 | } | |
614 | ||
615 | r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len); | |
616 | if (r == 0) { | |
617 | ssize_t sz; | |
618 | ||
619 | assert(len >= 9); | |
620 | data += 9; | |
621 | len -= 9; | |
622 | ||
623 | sz = write(fdt, data, len); | |
624 | if (sz < 0) { | |
56f64d95 | 625 | log_error_errno(errno, "Failed to write temporary file: %m"); |
9fe13294 ZJS |
626 | r = -errno; |
627 | goto error; | |
628 | } | |
629 | if (sz != (ssize_t) len) { | |
630 | log_error("Short write to temporary file."); | |
631 | r = -EIO; | |
632 | goto error; | |
633 | } | |
634 | } else if (filename) { | |
d89c8fdf | 635 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
9fe13294 ZJS |
636 | _cleanup_close_ int fdf; |
637 | ||
638 | fdf = open(filename, O_RDONLY | O_CLOEXEC); | |
639 | if (fdf < 0) { | |
56f64d95 | 640 | log_error_errno(errno, "Failed to open %s: %m", filename); |
9fe13294 ZJS |
641 | r = -errno; |
642 | goto error; | |
643 | } | |
644 | ||
d89c8fdf | 645 | r = decompress_stream(filename, fdf, fd, -1); |
9fe13294 | 646 | if (r < 0) { |
da927ba9 | 647 | log_error_errno(r, "Failed to decompress %s: %m", filename); |
9fe13294 ZJS |
648 | goto error; |
649 | } | |
2fb8159f | 650 | #else |
d89c8fdf | 651 | log_error("Cannot decompress file. Compiled without compression support."); |
15411c0c | 652 | r = -EOPNOTSUPP; |
2fb8159f DM |
653 | goto error; |
654 | #endif | |
9fe13294 ZJS |
655 | } else { |
656 | if (r == -ENOENT) | |
31cda3d1 | 657 | log_error("Cannot retrieve coredump from journal nor disk."); |
a276ae74 | 658 | else |
da927ba9 | 659 | log_error_errno(r, "Failed to retrieve COREDUMP field: %m"); |
9fe13294 ZJS |
660 | goto error; |
661 | } | |
a276ae74 | 662 | |
9fe13294 ZJS |
663 | if (temp) { |
664 | *path = temp; | |
665 | *unlink_temp = true; | |
a276ae74 LP |
666 | } |
667 | ||
9fe13294 ZJS |
668 | return 0; |
669 | ||
670 | error: | |
671 | if (temp) { | |
672 | unlink(temp); | |
673 | log_debug("Removed temporary file %s", temp); | |
a276ae74 | 674 | } |
9fe13294 ZJS |
675 | return r; |
676 | } | |
677 | } | |
a276ae74 | 678 | |
9fe13294 ZJS |
679 | static int dump_core(sd_journal* j) { |
680 | int r; | |
681 | ||
682 | assert(j); | |
683 | ||
684 | r = focus(j); | |
685 | if (r < 0) | |
ada45c78 | 686 | return r; |
ada45c78 | 687 | |
3774cf57 | 688 | print_info(arg_output ? stdout : stderr, j, false); |
9fe13294 | 689 | |
3774cf57 | 690 | if (on_tty() && !arg_output) { |
9fe13294 ZJS |
691 | log_error("Refusing to dump core to tty."); |
692 | return -ENOTTY; | |
693 | } | |
694 | ||
3774cf57 | 695 | r = save_core(j, arg_output ? fileno(arg_output) : STDOUT_FILENO, NULL, NULL); |
23bbb0de MS |
696 | if (r < 0) |
697 | return log_error_errno(r, "Coredump retrieval failed: %m"); | |
5de0409e ZJS |
698 | |
699 | r = sd_journal_previous(j); | |
700 | if (r >= 0) | |
9f6445e3 | 701 | log_warning("More than one entry matches, ignoring rest."); |
5de0409e ZJS |
702 | |
703 | return 0; | |
704 | } | |
705 | ||
ada45c78 | 706 | static int run_gdb(sd_journal *j) { |
de8f6e54 | 707 | _cleanup_free_ char *exe = NULL, *path = NULL; |
9fe13294 ZJS |
708 | bool unlink_path = false; |
709 | const char *data; | |
a276ae74 | 710 | siginfo_t st; |
ada45c78 | 711 | size_t len; |
ada45c78 | 712 | pid_t pid; |
ada45c78 | 713 | int r; |
ada45c78 LP |
714 | |
715 | assert(j); | |
716 | ||
717 | r = focus(j); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
e15758cc LP |
721 | print_info(stdout, j, false); |
722 | fputs("\n", stdout); | |
ada45c78 LP |
723 | |
724 | r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len); | |
23bbb0de MS |
725 | if (r < 0) |
726 | return log_error_errno(r, "Failed to retrieve COREDUMP_EXE field: %m"); | |
ada45c78 | 727 | |
9fe13294 ZJS |
728 | assert(len > strlen("COREDUMP_EXE=")); |
729 | data += strlen("COREDUMP_EXE="); | |
730 | len -= strlen("COREDUMP_EXE="); | |
ada45c78 LP |
731 | |
732 | exe = strndup(data, len); | |
733 | if (!exe) | |
734 | return log_oom(); | |
735 | ||
736 | if (endswith(exe, " (deleted)")) { | |
737 | log_error("Binary already deleted."); | |
738 | return -ENOENT; | |
739 | } | |
740 | ||
a276ae74 LP |
741 | if (!path_is_absolute(exe)) { |
742 | log_error("Binary is not an absolute path."); | |
743 | return -ENOENT; | |
744 | } | |
745 | ||
9fe13294 | 746 | r = save_core(j, -1, &path, &unlink_path); |
23bbb0de MS |
747 | if (r < 0) |
748 | return log_error_errno(r, "Failed to retrieve core: %m"); | |
ada45c78 LP |
749 | |
750 | pid = fork(); | |
751 | if (pid < 0) { | |
56f64d95 | 752 | log_error_errno(errno, "Failed to fork(): %m"); |
ada45c78 LP |
753 | r = -errno; |
754 | goto finish; | |
755 | } | |
756 | if (pid == 0) { | |
757 | execlp("gdb", "gdb", exe, path, NULL); | |
a276ae74 | 758 | |
56f64d95 | 759 | log_error_errno(errno, "Failed to invoke gdb: %m"); |
ada45c78 LP |
760 | _exit(1); |
761 | } | |
762 | ||
763 | r = wait_for_terminate(pid, &st); | |
764 | if (r < 0) { | |
56f64d95 | 765 | log_error_errno(errno, "Failed to wait for gdb: %m"); |
ada45c78 LP |
766 | goto finish; |
767 | } | |
768 | ||
769 | r = st.si_code == CLD_EXITED ? st.si_status : 255; | |
770 | ||
771 | finish: | |
9fe13294 ZJS |
772 | if (unlink_path) { |
773 | log_debug("Removed temporary file %s", path); | |
774 | unlink(path); | |
775 | } | |
a276ae74 | 776 | |
ada45c78 LP |
777 | return r; |
778 | } | |
779 | ||
5de0409e | 780 | int main(int argc, char *argv[]) { |
7fd1b19b | 781 | _cleanup_journal_close_ sd_journal*j = NULL; |
5de0409e ZJS |
782 | const char* match; |
783 | Iterator it; | |
784 | int r = 0; | |
7fd1b19b | 785 | _cleanup_set_free_free_ Set *matches = NULL; |
5de0409e | 786 | |
a9cdc94f | 787 | setlocale(LC_ALL, ""); |
5de0409e ZJS |
788 | log_parse_environment(); |
789 | log_open(); | |
790 | ||
791 | matches = new_matches(); | |
2fb7a5ce ZJS |
792 | if (!matches) { |
793 | r = -ENOMEM; | |
5de0409e | 794 | goto end; |
2fb7a5ce | 795 | } |
5de0409e | 796 | |
763c7aa2 | 797 | r = parse_argv(argc, argv, matches); |
2fb7a5ce | 798 | if (r < 0) |
5de0409e ZJS |
799 | goto end; |
800 | ||
801 | if (arg_action == ACTION_NONE) | |
802 | goto end; | |
803 | ||
2cf4172a LP |
804 | sigbus_install(); |
805 | ||
5de0409e ZJS |
806 | r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY); |
807 | if (r < 0) { | |
da927ba9 | 808 | log_error_errno(r, "Failed to open journal: %m"); |
5de0409e ZJS |
809 | goto end; |
810 | } | |
811 | ||
9fe13294 ZJS |
812 | /* We want full data, nothing truncated. */ |
813 | sd_journal_set_data_threshold(j, 0); | |
814 | ||
5de0409e | 815 | SET_FOREACH(match, matches, it) { |
5de0409e ZJS |
816 | r = sd_journal_add_match(j, match, strlen(match)); |
817 | if (r != 0) { | |
c33b3297 MS |
818 | log_error_errno(r, "Failed to add match '%s': %m", |
819 | match); | |
5de0409e ZJS |
820 | goto end; |
821 | } | |
822 | } | |
823 | ||
553d2243 | 824 | if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
6c17bf04 ZJS |
825 | _cleanup_free_ char *filter; |
826 | ||
827 | filter = journal_make_match_string(j); | |
828 | log_debug("Journal filter: %s", filter); | |
829 | } | |
830 | ||
5de0409e | 831 | switch(arg_action) { |
ada45c78 | 832 | |
5de0409e | 833 | case ACTION_LIST: |
e15758cc | 834 | case ACTION_INFO: |
5de0409e | 835 | if (!arg_no_pager) |
1b12a7b5 | 836 | pager_open(false); |
5de0409e ZJS |
837 | |
838 | r = dump_list(j); | |
839 | break; | |
ada45c78 | 840 | |
5de0409e ZJS |
841 | case ACTION_DUMP: |
842 | r = dump_core(j); | |
843 | break; | |
ada45c78 LP |
844 | |
845 | case ACTION_GDB: | |
846 | r = run_gdb(j); | |
847 | break; | |
848 | ||
849 | default: | |
5de0409e ZJS |
850 | assert_not_reached("Shouldn't be here"); |
851 | } | |
852 | ||
853 | end: | |
5de0409e ZJS |
854 | pager_close(); |
855 | ||
3774cf57 LP |
856 | if (arg_output) |
857 | fclose(arg_output); | |
5de0409e | 858 | |
ada45c78 | 859 | return r >= 0 ? r : EXIT_FAILURE; |
5de0409e | 860 | } |