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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" |
0b452006 | 40 | #include "process-util.h" |
288a74cc | 41 | #include "terminal-util.h" |
24882e06 | 42 | #include "signal-util.h" |
5de0409e ZJS |
43 | |
44 | static enum { | |
45 | ACTION_NONE, | |
e15758cc | 46 | ACTION_INFO, |
5de0409e ZJS |
47 | ACTION_LIST, |
48 | ACTION_DUMP, | |
ada45c78 | 49 | ACTION_GDB, |
5de0409e | 50 | } arg_action = ACTION_LIST; |
e15758cc | 51 | static const char* arg_field = NULL; |
ccc40358 | 52 | static int arg_no_pager = false; |
9a340880 | 53 | static int arg_no_legend = false; |
0c51aada | 54 | static int arg_one = false; |
3774cf57 | 55 | static FILE* arg_output = NULL; |
5de0409e ZJS |
56 | |
57 | static Set *new_matches(void) { | |
58 | Set *set; | |
59 | char *tmp; | |
60 | int r; | |
61 | ||
d5099efc | 62 | set = set_new(NULL); |
5de0409e ZJS |
63 | if (!set) { |
64 | log_oom(); | |
65 | return NULL; | |
66 | } | |
67 | ||
68 | tmp = strdup("MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1"); | |
69 | if (!tmp) { | |
70 | log_oom(); | |
4a207bb2 | 71 | set_free(set); |
5de0409e ZJS |
72 | return NULL; |
73 | } | |
74 | ||
ef42202a | 75 | r = set_consume(set, tmp); |
5de0409e | 76 | if (r < 0) { |
da927ba9 | 77 | log_error_errno(r, "failed to add to set: %m"); |
4a207bb2 | 78 | set_free(set); |
5de0409e ZJS |
79 | return NULL; |
80 | } | |
81 | ||
82 | return set; | |
83 | } | |
84 | ||
5de0409e ZJS |
85 | static int add_match(Set *set, const char *match) { |
86 | int r = -ENOMEM; | |
87 | unsigned pid; | |
88 | const char* prefix; | |
89 | char *pattern = NULL; | |
7fd1b19b | 90 | _cleanup_free_ char *p = NULL; |
5de0409e ZJS |
91 | |
92 | if (strchr(match, '=')) | |
93 | prefix = ""; | |
94 | else if (strchr(match, '/')) { | |
95 | p = path_make_absolute_cwd(match); | |
96 | if (!p) | |
97 | goto fail; | |
98 | ||
99 | match = p; | |
100 | prefix = "COREDUMP_EXE="; | |
101 | } | |
102 | else if (safe_atou(match, &pid) == 0) | |
103 | prefix = "COREDUMP_PID="; | |
104 | else | |
105 | prefix = "COREDUMP_COMM="; | |
106 | ||
107 | pattern = strjoin(prefix, match, NULL); | |
108 | if (!pattern) | |
109 | goto fail; | |
110 | ||
ef42202a | 111 | log_debug("Adding pattern: %s", pattern); |
f7a5bb28 | 112 | r = set_consume(set, pattern); |
5de0409e | 113 | if (r < 0) { |
da927ba9 | 114 | log_error_errno(r, "Failed to add pattern: %m"); |
5de0409e ZJS |
115 | goto fail; |
116 | } | |
5de0409e ZJS |
117 | |
118 | return 0; | |
119 | fail: | |
23bbb0de | 120 | return log_error_errno(r, "Failed to add match: %m"); |
5de0409e ZJS |
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 | 187 | case 'o': |
3774cf57 | 188 | if (arg_output) { |
5de0409e ZJS |
189 | log_error("cannot set output more than once"); |
190 | return -EINVAL; | |
191 | } | |
192 | ||
3774cf57 LP |
193 | arg_output = fopen(optarg, "we"); |
194 | if (!arg_output) | |
4a62c710 | 195 | return log_error_errno(errno, "writing to '%s': %m", optarg); |
5de0409e ZJS |
196 | |
197 | break; | |
57ce4bd4 | 198 | |
4f76ae1b | 199 | case 'F': |
a276ae74 | 200 | if (arg_field) { |
4f76ae1b ZJS |
201 | log_error("cannot use --field/-F more than once"); |
202 | return -EINVAL; | |
203 | } | |
a276ae74 | 204 | arg_field = optarg; |
4f76ae1b ZJS |
205 | break; |
206 | ||
0c51aada LP |
207 | case '1': |
208 | arg_one = true; | |
209 | break; | |
210 | ||
57ce4bd4 ZJS |
211 | case '?': |
212 | return -EINVAL; | |
213 | ||
5de0409e | 214 | default: |
eb9da376 | 215 | assert_not_reached("Unhandled option"); |
5de0409e ZJS |
216 | } |
217 | ||
218 | if (optind < argc) { | |
219 | const char *cmd = argv[optind++]; | |
f168c273 | 220 | if (streq(cmd, "list")) |
5de0409e ZJS |
221 | arg_action = ACTION_LIST; |
222 | else if (streq(cmd, "dump")) | |
223 | arg_action = ACTION_DUMP; | |
ada45c78 LP |
224 | else if (streq(cmd, "gdb")) |
225 | arg_action = ACTION_GDB; | |
e15758cc LP |
226 | else if (streq(cmd, "info")) |
227 | arg_action = ACTION_INFO; | |
5de0409e ZJS |
228 | else { |
229 | log_error("Unknown action '%s'", cmd); | |
230 | return -EINVAL; | |
231 | } | |
232 | } | |
233 | ||
a276ae74 | 234 | if (arg_field && arg_action != ACTION_LIST) { |
4f76ae1b ZJS |
235 | log_error("Option --field/-F only makes sense with list"); |
236 | return -EINVAL; | |
237 | } | |
238 | ||
5de0409e ZJS |
239 | while (optind < argc) { |
240 | r = add_match(matches, argv[optind]); | |
241 | if (r != 0) | |
242 | return r; | |
243 | optind++; | |
244 | } | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
8bc8ab83 LP |
249 | static int retrieve(const void *data, |
250 | size_t len, | |
251 | const char *name, | |
a276ae74 | 252 | char **var) { |
5de0409e | 253 | |
4f76ae1b | 254 | size_t ident; |
a276ae74 | 255 | char *v; |
8bc8ab83 | 256 | |
4f76ae1b | 257 | ident = strlen(name) + 1; /* name + "=" */ |
8bc8ab83 | 258 | |
4f76ae1b | 259 | if (len < ident) |
8bc8ab83 | 260 | return 0; |
5de0409e | 261 | |
4f76ae1b | 262 | if (memcmp(data, name, ident - 1) != 0) |
8bc8ab83 LP |
263 | return 0; |
264 | ||
4f76ae1b | 265 | if (((const char*) data)[ident - 1] != '=') |
8bc8ab83 | 266 | return 0; |
5de0409e | 267 | |
a276ae74 LP |
268 | v = strndup((const char*)data + ident, len - ident); |
269 | if (!v) | |
5de0409e ZJS |
270 | return log_oom(); |
271 | ||
a276ae74 LP |
272 | free(*var); |
273 | *var = v; | |
274 | ||
5de0409e ZJS |
275 | return 0; |
276 | } | |
277 | ||
4f76ae1b | 278 | static void print_field(FILE* file, sd_journal *j) { |
a276ae74 | 279 | _cleanup_free_ char *value = NULL; |
4f76ae1b ZJS |
280 | const void *d; |
281 | size_t l; | |
282 | ||
e15758cc LP |
283 | assert(file); |
284 | assert(j); | |
285 | ||
a276ae74 | 286 | assert(arg_field); |
4f76ae1b ZJS |
287 | |
288 | SD_JOURNAL_FOREACH_DATA(j, d, l) | |
a276ae74 LP |
289 | retrieve(d, l, arg_field, &value); |
290 | ||
4f76ae1b ZJS |
291 | if (value) |
292 | fprintf(file, "%s\n", value); | |
293 | } | |
294 | ||
e15758cc | 295 | static int print_list(FILE* file, sd_journal *j, int had_legend) { |
a276ae74 | 296 | _cleanup_free_ char |
5de0409e | 297 | *pid = NULL, *uid = NULL, *gid = NULL, |
9fe13294 ZJS |
298 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, |
299 | *filename = NULL; | |
8bc8ab83 LP |
300 | const void *d; |
301 | size_t l; | |
684341b0 LP |
302 | usec_t t; |
303 | char buf[FORMAT_TIMESTAMP_MAX]; | |
304 | int r; | |
9fe13294 | 305 | bool present; |
8bc8ab83 | 306 | |
e15758cc LP |
307 | assert(file); |
308 | assert(j); | |
309 | ||
8bc8ab83 | 310 | SD_JOURNAL_FOREACH_DATA(j, d, l) { |
8bc8ab83 LP |
311 | retrieve(d, l, "COREDUMP_PID", &pid); |
312 | retrieve(d, l, "COREDUMP_UID", &uid); | |
313 | retrieve(d, l, "COREDUMP_GID", &gid); | |
314 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
315 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
a276ae74 LP |
316 | retrieve(d, l, "COREDUMP_COMM", &comm); |
317 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
9fe13294 | 318 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
8bc8ab83 | 319 | } |
5de0409e | 320 | |
9fe13294 | 321 | if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline && !filename) { |
684341b0 LP |
322 | log_warning("Empty coredump log entry"); |
323 | return -EINVAL; | |
324 | } | |
325 | ||
326 | r = sd_journal_get_realtime_usec(j, &t); | |
23bbb0de MS |
327 | if (r < 0) |
328 | return log_error_errno(r, "Failed to get realtime timestamp: %m"); | |
5de0409e | 329 | |
684341b0 | 330 | format_timestamp(buf, sizeof(buf), t); |
9fe13294 | 331 | present = filename && access(filename, F_OK) == 0; |
684341b0 | 332 | |
9a340880 | 333 | if (!had_legend && !arg_no_legend) |
9fe13294 | 334 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 335 | FORMAT_TIMESTAMP_WIDTH, "TIME", |
5de0409e ZJS |
336 | 6, "PID", |
337 | 5, "UID", | |
338 | 5, "GID", | |
684341b0 | 339 | 3, "SIG", |
9fe13294 | 340 | 1, "PRESENT", |
684341b0 | 341 | "EXE"); |
5de0409e | 342 | |
9fe13294 | 343 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 344 | FORMAT_TIMESTAMP_WIDTH, buf, |
a276ae74 LP |
345 | 6, strna(pid), |
346 | 5, strna(uid), | |
347 | 5, strna(gid), | |
348 | 3, strna(sgnl), | |
9fe13294 | 349 | 1, present ? "*" : "", |
a276ae74 | 350 | strna(exe ?: (comm ?: cmdline))); |
684341b0 LP |
351 | |
352 | return 0; | |
5de0409e ZJS |
353 | } |
354 | ||
e15758cc LP |
355 | static int print_info(FILE *file, sd_journal *j, bool need_space) { |
356 | _cleanup_free_ char | |
357 | *pid = NULL, *uid = NULL, *gid = NULL, | |
358 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, | |
359 | *unit = NULL, *user_unit = NULL, *session = NULL, | |
a035f819 | 360 | *boot_id = NULL, *machine_id = NULL, *hostname = NULL, |
9fe13294 ZJS |
361 | *slice = NULL, *cgroup = NULL, *owner_uid = NULL, |
362 | *message = NULL, *timestamp = NULL, *filename = NULL; | |
e15758cc LP |
363 | const void *d; |
364 | size_t l; | |
4b8cbe9a | 365 | int r; |
e15758cc LP |
366 | |
367 | assert(file); | |
368 | assert(j); | |
369 | ||
370 | SD_JOURNAL_FOREACH_DATA(j, d, l) { | |
371 | retrieve(d, l, "COREDUMP_PID", &pid); | |
372 | retrieve(d, l, "COREDUMP_UID", &uid); | |
373 | retrieve(d, l, "COREDUMP_GID", &gid); | |
374 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
375 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
376 | retrieve(d, l, "COREDUMP_COMM", &comm); | |
377 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
378 | retrieve(d, l, "COREDUMP_UNIT", &unit); | |
379 | retrieve(d, l, "COREDUMP_USER_UNIT", &user_unit); | |
380 | retrieve(d, l, "COREDUMP_SESSION", &session); | |
a035f819 LP |
381 | retrieve(d, l, "COREDUMP_OWNER_UID", &owner_uid); |
382 | retrieve(d, l, "COREDUMP_SLICE", &slice); | |
383 | retrieve(d, l, "COREDUMP_CGROUP", &cgroup); | |
4b8cbe9a | 384 | retrieve(d, l, "COREDUMP_TIMESTAMP", ×tamp); |
9fe13294 | 385 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
e15758cc LP |
386 | retrieve(d, l, "_BOOT_ID", &boot_id); |
387 | retrieve(d, l, "_MACHINE_ID", &machine_id); | |
388 | retrieve(d, l, "_HOSTNAME", &hostname); | |
8d4e028f | 389 | retrieve(d, l, "MESSAGE", &message); |
e15758cc LP |
390 | } |
391 | ||
392 | if (need_space) | |
393 | fputs("\n", file); | |
394 | ||
81cef14f LP |
395 | if (comm) |
396 | fprintf(file, | |
397 | " PID: %s%s%s (%s)\n", | |
398 | ansi_highlight(), strna(pid), ansi_highlight_off(), comm); | |
399 | else | |
400 | fprintf(file, | |
401 | " PID: %s%s%s\n", | |
402 | ansi_highlight(), strna(pid), ansi_highlight_off()); | |
a035f819 LP |
403 | |
404 | if (uid) { | |
405 | uid_t n; | |
406 | ||
407 | if (parse_uid(uid, &n) >= 0) { | |
408 | _cleanup_free_ char *u = NULL; | |
409 | ||
410 | u = uid_to_name(n); | |
411 | fprintf(file, | |
412 | " UID: %s (%s)\n", | |
413 | uid, u); | |
414 | } else { | |
415 | fprintf(file, | |
416 | " UID: %s\n", | |
417 | uid); | |
418 | } | |
419 | } | |
420 | ||
421 | if (gid) { | |
422 | gid_t n; | |
423 | ||
424 | if (parse_gid(gid, &n) >= 0) { | |
425 | _cleanup_free_ char *g = NULL; | |
426 | ||
427 | g = gid_to_name(n); | |
428 | fprintf(file, | |
429 | " GID: %s (%s)\n", | |
430 | gid, g); | |
431 | } else { | |
432 | fprintf(file, | |
433 | " GID: %s\n", | |
434 | gid); | |
435 | } | |
436 | } | |
e15758cc LP |
437 | |
438 | if (sgnl) { | |
439 | int sig; | |
440 | ||
441 | if (safe_atoi(sgnl, &sig) >= 0) | |
442 | fprintf(file, " Signal: %s (%s)\n", sgnl, signal_to_string(sig)); | |
443 | else | |
444 | fprintf(file, " Signal: %s\n", sgnl); | |
445 | } | |
446 | ||
4b8cbe9a LP |
447 | if (timestamp) { |
448 | usec_t u; | |
449 | ||
450 | r = safe_atou64(timestamp, &u); | |
451 | if (r >= 0) { | |
452 | char absolute[FORMAT_TIMESTAMP_MAX], relative[FORMAT_TIMESPAN_MAX]; | |
453 | ||
454 | fprintf(file, | |
455 | " Timestamp: %s (%s)\n", | |
456 | format_timestamp(absolute, sizeof(absolute), u), | |
457 | format_timestamp_relative(relative, sizeof(relative), u)); | |
458 | ||
459 | } else | |
460 | fprintf(file, " Timestamp: %s\n", timestamp); | |
461 | } | |
462 | ||
e15758cc LP |
463 | if (cmdline) |
464 | fprintf(file, " Command Line: %s\n", cmdline); | |
81cef14f LP |
465 | if (exe) |
466 | fprintf(file, " Executable: %s%s%s\n", ansi_highlight(), exe, ansi_highlight_off()); | |
a035f819 LP |
467 | if (cgroup) |
468 | fprintf(file, " Control Group: %s\n", cgroup); | |
e15758cc LP |
469 | if (unit) |
470 | fprintf(file, " Unit: %s\n", unit); | |
471 | if (user_unit) | |
472 | fprintf(file, " User Unit: %s\n", unit); | |
a035f819 LP |
473 | if (slice) |
474 | fprintf(file, " Slice: %s\n", slice); | |
e15758cc LP |
475 | if (session) |
476 | fprintf(file, " Session: %s\n", session); | |
a035f819 LP |
477 | if (owner_uid) { |
478 | uid_t n; | |
479 | ||
480 | if (parse_uid(owner_uid, &n) >= 0) { | |
481 | _cleanup_free_ char *u = NULL; | |
482 | ||
483 | u = uid_to_name(n); | |
484 | fprintf(file, | |
485 | " Owner UID: %s (%s)\n", | |
486 | owner_uid, u); | |
487 | } else { | |
488 | fprintf(file, | |
489 | " Owner UID: %s\n", | |
490 | owner_uid); | |
491 | } | |
492 | } | |
e15758cc LP |
493 | if (boot_id) |
494 | fprintf(file, " Boot ID: %s\n", boot_id); | |
495 | if (machine_id) | |
496 | fprintf(file, " Machine ID: %s\n", machine_id); | |
497 | if (hostname) | |
498 | fprintf(file, " Hostname: %s\n", hostname); | |
499 | ||
9fe13294 ZJS |
500 | if (filename && access(filename, F_OK) == 0) |
501 | fprintf(file, " Coredump: %s\n", filename); | |
e15758cc | 502 | |
8d4e028f LP |
503 | if (message) { |
504 | _cleanup_free_ char *m = NULL; | |
505 | ||
506 | m = strreplace(message, "\n", "\n "); | |
507 | ||
508 | fprintf(file, " Message: %s\n", strstrip(m ?: message)); | |
509 | } | |
510 | ||
e15758cc LP |
511 | return 0; |
512 | } | |
513 | ||
ada45c78 | 514 | static int focus(sd_journal *j) { |
5de0409e ZJS |
515 | int r; |
516 | ||
5de0409e ZJS |
517 | r = sd_journal_seek_tail(j); |
518 | if (r == 0) | |
519 | r = sd_journal_previous(j); | |
23bbb0de MS |
520 | if (r < 0) |
521 | return log_error_errno(r, "Failed to search journal: %m"); | |
8bc8ab83 | 522 | if (r == 0) { |
0c51aada | 523 | log_error("No match found."); |
8bc8ab83 LP |
524 | return -ESRCH; |
525 | } | |
ada45c78 LP |
526 | return r; |
527 | } | |
5de0409e | 528 | |
0c51aada LP |
529 | static void print_entry(sd_journal *j, unsigned n_found) { |
530 | assert(j); | |
531 | ||
532 | if (arg_action == ACTION_INFO) | |
533 | print_info(stdout, j, n_found); | |
534 | else if (arg_field) | |
535 | print_field(stdout, j); | |
536 | else | |
537 | print_list(stdout, j, n_found); | |
538 | } | |
539 | ||
540 | static int dump_list(sd_journal *j) { | |
541 | unsigned n_found = 0; | |
542 | int r; | |
543 | ||
544 | assert(j); | |
545 | ||
546 | /* The coredumps are likely to compressed, and for just | |
547 | * listing them we don't need to decompress them, so let's | |
548 | * pick a fairly low data threshold here */ | |
549 | sd_journal_set_data_threshold(j, 4096); | |
550 | ||
551 | if (arg_one) { | |
552 | r = focus(j); | |
553 | if (r < 0) | |
554 | return r; | |
555 | ||
556 | print_entry(j, 0); | |
557 | } else { | |
558 | SD_JOURNAL_FOREACH(j) | |
559 | print_entry(j, n_found++); | |
560 | ||
561 | if (!arg_field && n_found <= 0) { | |
562 | log_notice("No coredumps found."); | |
563 | return -ESRCH; | |
564 | } | |
565 | } | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
9fe13294 ZJS |
570 | static int save_core(sd_journal *j, int fd, char **path, bool *unlink_temp) { |
571 | const char *data; | |
572 | _cleanup_free_ char *filename = NULL; | |
573 | size_t len; | |
ada45c78 LP |
574 | int r; |
575 | ||
9fe13294 ZJS |
576 | assert((fd >= 0) != !!path); |
577 | assert(!!path == !!unlink_temp); | |
ada45c78 | 578 | |
9fe13294 ZJS |
579 | /* Prefer uncompressed file to journal (probably cached) to |
580 | * compressed file (probably uncached). */ | |
581 | r = sd_journal_get_data(j, "COREDUMP_FILENAME", (const void**) &data, &len); | |
582 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 583 | log_warning_errno(r, "Failed to retrieve COREDUMP_FILENAME: %m"); |
9fe13294 ZJS |
584 | else if (r == 0) |
585 | retrieve(data, len, "COREDUMP_FILENAME", &filename); | |
93b73b06 | 586 | |
9fe13294 | 587 | if (filename && access(filename, R_OK) < 0) { |
31cda3d1 ZJS |
588 | log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING, |
589 | "File %s is not readable: %m", filename); | |
9fe13294 ZJS |
590 | free(filename); |
591 | filename = NULL; | |
5de0409e ZJS |
592 | } |
593 | ||
d89c8fdf | 594 | if (filename && !endswith(filename, ".xz") && !endswith(filename, ".lz4")) { |
d0c8806d TA |
595 | if (path) { |
596 | *path = filename; | |
597 | filename = NULL; | |
598 | } | |
a276ae74 | 599 | |
9fe13294 ZJS |
600 | return 0; |
601 | } else { | |
602 | _cleanup_close_ int fdt = -1; | |
603 | char *temp = NULL; | |
a276ae74 | 604 | |
a276ae74 | 605 | if (fd < 0) { |
9fe13294 ZJS |
606 | temp = strdup("/var/tmp/coredump-XXXXXX"); |
607 | if (!temp) | |
608 | return log_oom(); | |
609 | ||
610 | fdt = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC); | |
4a62c710 MS |
611 | if (fdt < 0) |
612 | return log_error_errno(errno, "Failed to create temporary file: %m"); | |
9fe13294 ZJS |
613 | log_debug("Created temporary file %s", temp); |
614 | ||
615 | fd = fdt; | |
616 | } | |
617 | ||
618 | r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len); | |
619 | if (r == 0) { | |
620 | ssize_t sz; | |
621 | ||
622 | assert(len >= 9); | |
623 | data += 9; | |
624 | len -= 9; | |
625 | ||
626 | sz = write(fdt, data, len); | |
627 | if (sz < 0) { | |
56f64d95 | 628 | log_error_errno(errno, "Failed to write temporary file: %m"); |
9fe13294 ZJS |
629 | r = -errno; |
630 | goto error; | |
631 | } | |
632 | if (sz != (ssize_t) len) { | |
633 | log_error("Short write to temporary file."); | |
634 | r = -EIO; | |
635 | goto error; | |
636 | } | |
637 | } else if (filename) { | |
d89c8fdf | 638 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
9fe13294 ZJS |
639 | _cleanup_close_ int fdf; |
640 | ||
641 | fdf = open(filename, O_RDONLY | O_CLOEXEC); | |
642 | if (fdf < 0) { | |
56f64d95 | 643 | log_error_errno(errno, "Failed to open %s: %m", filename); |
9fe13294 ZJS |
644 | r = -errno; |
645 | goto error; | |
646 | } | |
647 | ||
d89c8fdf | 648 | r = decompress_stream(filename, fdf, fd, -1); |
9fe13294 | 649 | if (r < 0) { |
da927ba9 | 650 | log_error_errno(r, "Failed to decompress %s: %m", filename); |
9fe13294 ZJS |
651 | goto error; |
652 | } | |
2fb8159f | 653 | #else |
d89c8fdf | 654 | log_error("Cannot decompress file. Compiled without compression support."); |
15411c0c | 655 | r = -EOPNOTSUPP; |
2fb8159f DM |
656 | goto error; |
657 | #endif | |
9fe13294 ZJS |
658 | } else { |
659 | if (r == -ENOENT) | |
31cda3d1 | 660 | log_error("Cannot retrieve coredump from journal nor disk."); |
a276ae74 | 661 | else |
da927ba9 | 662 | log_error_errno(r, "Failed to retrieve COREDUMP field: %m"); |
9fe13294 ZJS |
663 | goto error; |
664 | } | |
a276ae74 | 665 | |
9fe13294 ZJS |
666 | if (temp) { |
667 | *path = temp; | |
668 | *unlink_temp = true; | |
a276ae74 LP |
669 | } |
670 | ||
9fe13294 ZJS |
671 | return 0; |
672 | ||
673 | error: | |
674 | if (temp) { | |
675 | unlink(temp); | |
676 | log_debug("Removed temporary file %s", temp); | |
a276ae74 | 677 | } |
9fe13294 ZJS |
678 | return r; |
679 | } | |
680 | } | |
a276ae74 | 681 | |
9fe13294 ZJS |
682 | static int dump_core(sd_journal* j) { |
683 | int r; | |
684 | ||
685 | assert(j); | |
686 | ||
687 | r = focus(j); | |
688 | if (r < 0) | |
ada45c78 | 689 | return r; |
ada45c78 | 690 | |
3774cf57 | 691 | print_info(arg_output ? stdout : stderr, j, false); |
9fe13294 | 692 | |
3774cf57 | 693 | if (on_tty() && !arg_output) { |
9fe13294 ZJS |
694 | log_error("Refusing to dump core to tty."); |
695 | return -ENOTTY; | |
696 | } | |
697 | ||
3774cf57 | 698 | r = save_core(j, arg_output ? fileno(arg_output) : STDOUT_FILENO, NULL, NULL); |
23bbb0de MS |
699 | if (r < 0) |
700 | return log_error_errno(r, "Coredump retrieval failed: %m"); | |
5de0409e ZJS |
701 | |
702 | r = sd_journal_previous(j); | |
703 | if (r >= 0) | |
9f6445e3 | 704 | log_warning("More than one entry matches, ignoring rest."); |
5de0409e ZJS |
705 | |
706 | return 0; | |
707 | } | |
708 | ||
ada45c78 | 709 | static int run_gdb(sd_journal *j) { |
de8f6e54 | 710 | _cleanup_free_ char *exe = NULL, *path = NULL; |
9fe13294 ZJS |
711 | bool unlink_path = false; |
712 | const char *data; | |
a276ae74 | 713 | siginfo_t st; |
ada45c78 | 714 | size_t len; |
ada45c78 | 715 | pid_t pid; |
ada45c78 | 716 | int r; |
ada45c78 LP |
717 | |
718 | assert(j); | |
719 | ||
720 | r = focus(j); | |
721 | if (r < 0) | |
722 | return r; | |
723 | ||
e15758cc LP |
724 | print_info(stdout, j, false); |
725 | fputs("\n", stdout); | |
ada45c78 LP |
726 | |
727 | r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len); | |
23bbb0de MS |
728 | if (r < 0) |
729 | return log_error_errno(r, "Failed to retrieve COREDUMP_EXE field: %m"); | |
ada45c78 | 730 | |
9fe13294 ZJS |
731 | assert(len > strlen("COREDUMP_EXE=")); |
732 | data += strlen("COREDUMP_EXE="); | |
733 | len -= strlen("COREDUMP_EXE="); | |
ada45c78 LP |
734 | |
735 | exe = strndup(data, len); | |
736 | if (!exe) | |
737 | return log_oom(); | |
738 | ||
739 | if (endswith(exe, " (deleted)")) { | |
740 | log_error("Binary already deleted."); | |
741 | return -ENOENT; | |
742 | } | |
743 | ||
a276ae74 LP |
744 | if (!path_is_absolute(exe)) { |
745 | log_error("Binary is not an absolute path."); | |
746 | return -ENOENT; | |
747 | } | |
748 | ||
9fe13294 | 749 | r = save_core(j, -1, &path, &unlink_path); |
23bbb0de MS |
750 | if (r < 0) |
751 | return log_error_errno(r, "Failed to retrieve core: %m"); | |
ada45c78 LP |
752 | |
753 | pid = fork(); | |
754 | if (pid < 0) { | |
56f64d95 | 755 | log_error_errno(errno, "Failed to fork(): %m"); |
ada45c78 LP |
756 | r = -errno; |
757 | goto finish; | |
758 | } | |
759 | if (pid == 0) { | |
760 | execlp("gdb", "gdb", exe, path, NULL); | |
a276ae74 | 761 | |
56f64d95 | 762 | log_error_errno(errno, "Failed to invoke gdb: %m"); |
ada45c78 LP |
763 | _exit(1); |
764 | } | |
765 | ||
766 | r = wait_for_terminate(pid, &st); | |
767 | if (r < 0) { | |
56f64d95 | 768 | log_error_errno(errno, "Failed to wait for gdb: %m"); |
ada45c78 LP |
769 | goto finish; |
770 | } | |
771 | ||
772 | r = st.si_code == CLD_EXITED ? st.si_status : 255; | |
773 | ||
774 | finish: | |
9fe13294 ZJS |
775 | if (unlink_path) { |
776 | log_debug("Removed temporary file %s", path); | |
777 | unlink(path); | |
778 | } | |
a276ae74 | 779 | |
ada45c78 LP |
780 | return r; |
781 | } | |
782 | ||
5de0409e | 783 | int main(int argc, char *argv[]) { |
7fd1b19b | 784 | _cleanup_journal_close_ sd_journal*j = NULL; |
5de0409e ZJS |
785 | const char* match; |
786 | Iterator it; | |
787 | int r = 0; | |
7fd1b19b | 788 | _cleanup_set_free_free_ Set *matches = NULL; |
5de0409e | 789 | |
a9cdc94f | 790 | setlocale(LC_ALL, ""); |
5de0409e ZJS |
791 | log_parse_environment(); |
792 | log_open(); | |
793 | ||
794 | matches = new_matches(); | |
2fb7a5ce ZJS |
795 | if (!matches) { |
796 | r = -ENOMEM; | |
5de0409e | 797 | goto end; |
2fb7a5ce | 798 | } |
5de0409e | 799 | |
763c7aa2 | 800 | r = parse_argv(argc, argv, matches); |
2fb7a5ce | 801 | if (r < 0) |
5de0409e ZJS |
802 | goto end; |
803 | ||
804 | if (arg_action == ACTION_NONE) | |
805 | goto end; | |
806 | ||
2cf4172a LP |
807 | sigbus_install(); |
808 | ||
5de0409e ZJS |
809 | r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY); |
810 | if (r < 0) { | |
da927ba9 | 811 | log_error_errno(r, "Failed to open journal: %m"); |
5de0409e ZJS |
812 | goto end; |
813 | } | |
814 | ||
9fe13294 ZJS |
815 | /* We want full data, nothing truncated. */ |
816 | sd_journal_set_data_threshold(j, 0); | |
817 | ||
5de0409e | 818 | SET_FOREACH(match, matches, it) { |
5de0409e ZJS |
819 | r = sd_journal_add_match(j, match, strlen(match)); |
820 | if (r != 0) { | |
c33b3297 MS |
821 | log_error_errno(r, "Failed to add match '%s': %m", |
822 | match); | |
5de0409e ZJS |
823 | goto end; |
824 | } | |
825 | } | |
826 | ||
553d2243 | 827 | if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
6c17bf04 ZJS |
828 | _cleanup_free_ char *filter; |
829 | ||
830 | filter = journal_make_match_string(j); | |
831 | log_debug("Journal filter: %s", filter); | |
832 | } | |
833 | ||
5de0409e | 834 | switch(arg_action) { |
ada45c78 | 835 | |
5de0409e | 836 | case ACTION_LIST: |
e15758cc | 837 | case ACTION_INFO: |
5de0409e | 838 | if (!arg_no_pager) |
1b12a7b5 | 839 | pager_open(false); |
5de0409e ZJS |
840 | |
841 | r = dump_list(j); | |
842 | break; | |
ada45c78 | 843 | |
5de0409e ZJS |
844 | case ACTION_DUMP: |
845 | r = dump_core(j); | |
846 | break; | |
ada45c78 LP |
847 | |
848 | case ACTION_GDB: | |
849 | r = run_gdb(j); | |
850 | break; | |
851 | ||
852 | default: | |
5de0409e ZJS |
853 | assert_not_reached("Shouldn't be here"); |
854 | } | |
855 | ||
856 | end: | |
5de0409e ZJS |
857 | pager_close(); |
858 | ||
3774cf57 LP |
859 | if (arg_output) |
860 | fclose(arg_output); | |
5de0409e | 861 | |
ada45c78 | 862 | return r >= 0 ? r : EXIT_FAILURE; |
5de0409e | 863 | } |