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Commit | Line | Data |
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5de0409e ZJS |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2012 Zbigniew Jędrzejewski-Szmek | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
3f6fd1ba LP |
20 | #include <fcntl.h> |
21 | #include <getopt.h> | |
a9cdc94f | 22 | #include <locale.h> |
5de0409e ZJS |
23 | #include <stdio.h> |
24 | #include <string.h> | |
ada45c78 | 25 | #include <unistd.h> |
5de0409e | 26 | |
2cf4172a | 27 | #include "sd-journal.h" |
3f6fd1ba | 28 | |
b5efdb8a | 29 | #include "alloc-util.h" |
3f6fd1ba | 30 | #include "compress.h" |
3ffd4af2 | 31 | #include "fd-util.h" |
0d39fa9c | 32 | #include "fileio.h" |
992e8f22 | 33 | #include "fs-util.h" |
3f6fd1ba | 34 | #include "journal-internal.h" |
5de0409e | 35 | #include "log.h" |
763c7aa2 | 36 | #include "macro.h" |
3f6fd1ba | 37 | #include "pager.h" |
6bedfcbb | 38 | #include "parse-util.h" |
3f6fd1ba | 39 | #include "path-util.h" |
0b452006 | 40 | #include "process-util.h" |
3f6fd1ba LP |
41 | #include "set.h" |
42 | #include "sigbus.h" | |
24882e06 | 43 | #include "signal-util.h" |
07630cea | 44 | #include "string-util.h" |
3f6fd1ba | 45 | #include "terminal-util.h" |
b1d4f8e1 | 46 | #include "user-util.h" |
6bedfcbb | 47 | #include "util.h" |
5de0409e ZJS |
48 | |
49 | static enum { | |
50 | ACTION_NONE, | |
e15758cc | 51 | ACTION_INFO, |
5de0409e ZJS |
52 | ACTION_LIST, |
53 | ACTION_DUMP, | |
ada45c78 | 54 | ACTION_GDB, |
5de0409e | 55 | } arg_action = ACTION_LIST; |
e15758cc | 56 | static const char* arg_field = NULL; |
b73e9a02 | 57 | static const char *arg_directory = NULL; |
ea4b98e6 | 58 | static bool arg_no_pager = false; |
9a340880 | 59 | static int arg_no_legend = false; |
0c51aada | 60 | static int arg_one = false; |
3774cf57 | 61 | static FILE* arg_output = NULL; |
5de0409e ZJS |
62 | |
63 | static Set *new_matches(void) { | |
64 | Set *set; | |
65 | char *tmp; | |
66 | int r; | |
67 | ||
d5099efc | 68 | set = set_new(NULL); |
5de0409e ZJS |
69 | if (!set) { |
70 | log_oom(); | |
71 | return NULL; | |
72 | } | |
73 | ||
74 | tmp = strdup("MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1"); | |
75 | if (!tmp) { | |
76 | log_oom(); | |
4a207bb2 | 77 | set_free(set); |
5de0409e ZJS |
78 | return NULL; |
79 | } | |
80 | ||
ef42202a | 81 | r = set_consume(set, tmp); |
5de0409e | 82 | if (r < 0) { |
da927ba9 | 83 | log_error_errno(r, "failed to add to set: %m"); |
4a207bb2 | 84 | set_free(set); |
5de0409e ZJS |
85 | return NULL; |
86 | } | |
87 | ||
88 | return set; | |
89 | } | |
90 | ||
5de0409e | 91 | static int add_match(Set *set, const char *match) { |
7fd1b19b | 92 | _cleanup_free_ char *p = NULL; |
0f474365 LP |
93 | char *pattern = NULL; |
94 | const char* prefix; | |
95 | pid_t pid; | |
96 | int r; | |
5de0409e ZJS |
97 | |
98 | if (strchr(match, '=')) | |
99 | prefix = ""; | |
100 | else if (strchr(match, '/')) { | |
0f474365 LP |
101 | r = path_make_absolute_cwd(match, &p); |
102 | if (r < 0) | |
5de0409e | 103 | goto fail; |
5de0409e ZJS |
104 | match = p; |
105 | prefix = "COREDUMP_EXE="; | |
0f474365 | 106 | } else if (parse_pid(match, &pid) >= 0) |
5de0409e ZJS |
107 | prefix = "COREDUMP_PID="; |
108 | else | |
109 | prefix = "COREDUMP_COMM="; | |
110 | ||
111 | pattern = strjoin(prefix, match, NULL); | |
0f474365 LP |
112 | if (!pattern) { |
113 | r = -ENOMEM; | |
5de0409e | 114 | goto fail; |
0f474365 | 115 | } |
5de0409e | 116 | |
ef42202a | 117 | log_debug("Adding pattern: %s", pattern); |
f7a5bb28 | 118 | r = set_consume(set, pattern); |
0f474365 | 119 | if (r < 0) |
5de0409e | 120 | goto fail; |
5de0409e ZJS |
121 | |
122 | return 0; | |
123 | fail: | |
23bbb0de | 124 | return log_error_errno(r, "Failed to add match: %m"); |
5de0409e ZJS |
125 | } |
126 | ||
601185b4 ZJS |
127 | static void help(void) { |
128 | printf("%s [OPTIONS...]\n\n" | |
129 | "List or retrieve coredumps from the journal.\n\n" | |
130 | "Flags:\n" | |
131 | " -h --help Show this help\n" | |
132 | " --version Print version string\n" | |
133 | " --no-pager Do not pipe output into a pager\n" | |
134 | " --no-legend Do not print the column headers.\n" | |
135 | " -1 Show information about most recent entry only\n" | |
136 | " -F --field=FIELD List all values a certain field takes\n" | |
137 | " -o --output=FILE Write output to FILE\n\n" | |
b73e9a02 | 138 | " -D --directory=DIR Use journal files from directory\n\n" |
601185b4 ZJS |
139 | |
140 | "Commands:\n" | |
141 | " list [MATCHES...] List available coredumps (default)\n" | |
142 | " info [MATCHES...] Show detailed information about one or more coredumps\n" | |
143 | " dump [MATCHES...] Print first matching coredump to stdout\n" | |
144 | " gdb [MATCHES...] Start gdb for the first matching coredump\n" | |
145 | , program_invocation_short_name); | |
146 | } | |
147 | ||
763c7aa2 | 148 | static int parse_argv(int argc, char *argv[], Set *matches) { |
5de0409e ZJS |
149 | enum { |
150 | ARG_VERSION = 0x100, | |
151 | ARG_NO_PAGER, | |
9a340880 | 152 | ARG_NO_LEGEND, |
5de0409e ZJS |
153 | }; |
154 | ||
155 | int r, c; | |
156 | ||
157 | static const struct option options[] = { | |
57ce4bd4 ZJS |
158 | { "help", no_argument, NULL, 'h' }, |
159 | { "version" , no_argument, NULL, ARG_VERSION }, | |
160 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
9a340880 | 161 | { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, |
57ce4bd4 | 162 | { "output", required_argument, NULL, 'o' }, |
4f76ae1b | 163 | { "field", required_argument, NULL, 'F' }, |
b73e9a02 | 164 | { "directory", required_argument, NULL, 'D' }, |
eb9da376 | 165 | {} |
5de0409e ZJS |
166 | }; |
167 | ||
168 | assert(argc >= 0); | |
169 | assert(argv); | |
170 | ||
b73e9a02 | 171 | while ((c = getopt_long(argc, argv, "ho:F:1D:", options, NULL)) >= 0) |
5de0409e | 172 | switch(c) { |
eb9da376 | 173 | |
5de0409e | 174 | case 'h': |
5de0409e | 175 | arg_action = ACTION_NONE; |
601185b4 ZJS |
176 | help(); |
177 | return 0; | |
5de0409e ZJS |
178 | |
179 | case ARG_VERSION: | |
eb9da376 | 180 | arg_action = ACTION_NONE; |
3f6fd1ba | 181 | return version(); |
5de0409e ZJS |
182 | |
183 | case ARG_NO_PAGER: | |
184 | arg_no_pager = true; | |
185 | break; | |
186 | ||
9a340880 ZJS |
187 | case ARG_NO_LEGEND: |
188 | arg_no_legend = true; | |
189 | break; | |
190 | ||
5de0409e | 191 | case 'o': |
3774cf57 | 192 | if (arg_output) { |
5de0409e ZJS |
193 | log_error("cannot set output more than once"); |
194 | return -EINVAL; | |
195 | } | |
196 | ||
3774cf57 LP |
197 | arg_output = fopen(optarg, "we"); |
198 | if (!arg_output) | |
4a62c710 | 199 | return log_error_errno(errno, "writing to '%s': %m", optarg); |
5de0409e ZJS |
200 | |
201 | break; | |
57ce4bd4 | 202 | |
4f76ae1b | 203 | case 'F': |
a276ae74 | 204 | if (arg_field) { |
4f76ae1b ZJS |
205 | log_error("cannot use --field/-F more than once"); |
206 | return -EINVAL; | |
207 | } | |
a276ae74 | 208 | arg_field = optarg; |
4f76ae1b ZJS |
209 | break; |
210 | ||
0c51aada LP |
211 | case '1': |
212 | arg_one = true; | |
213 | break; | |
214 | ||
b73e9a02 SW |
215 | case 'D': |
216 | arg_directory = optarg; | |
217 | break; | |
218 | ||
57ce4bd4 ZJS |
219 | case '?': |
220 | return -EINVAL; | |
221 | ||
5de0409e | 222 | default: |
eb9da376 | 223 | assert_not_reached("Unhandled option"); |
5de0409e ZJS |
224 | } |
225 | ||
226 | if (optind < argc) { | |
227 | const char *cmd = argv[optind++]; | |
f168c273 | 228 | if (streq(cmd, "list")) |
5de0409e ZJS |
229 | arg_action = ACTION_LIST; |
230 | else if (streq(cmd, "dump")) | |
231 | arg_action = ACTION_DUMP; | |
ada45c78 LP |
232 | else if (streq(cmd, "gdb")) |
233 | arg_action = ACTION_GDB; | |
e15758cc LP |
234 | else if (streq(cmd, "info")) |
235 | arg_action = ACTION_INFO; | |
5de0409e ZJS |
236 | else { |
237 | log_error("Unknown action '%s'", cmd); | |
238 | return -EINVAL; | |
239 | } | |
240 | } | |
241 | ||
a276ae74 | 242 | if (arg_field && arg_action != ACTION_LIST) { |
4f76ae1b ZJS |
243 | log_error("Option --field/-F only makes sense with list"); |
244 | return -EINVAL; | |
245 | } | |
246 | ||
5de0409e ZJS |
247 | while (optind < argc) { |
248 | r = add_match(matches, argv[optind]); | |
249 | if (r != 0) | |
250 | return r; | |
251 | optind++; | |
252 | } | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
8bc8ab83 LP |
257 | static int retrieve(const void *data, |
258 | size_t len, | |
259 | const char *name, | |
a276ae74 | 260 | char **var) { |
5de0409e | 261 | |
4f76ae1b | 262 | size_t ident; |
a276ae74 | 263 | char *v; |
8bc8ab83 | 264 | |
4f76ae1b | 265 | ident = strlen(name) + 1; /* name + "=" */ |
8bc8ab83 | 266 | |
4f76ae1b | 267 | if (len < ident) |
8bc8ab83 | 268 | return 0; |
5de0409e | 269 | |
4f76ae1b | 270 | if (memcmp(data, name, ident - 1) != 0) |
8bc8ab83 LP |
271 | return 0; |
272 | ||
4f76ae1b | 273 | if (((const char*) data)[ident - 1] != '=') |
8bc8ab83 | 274 | return 0; |
5de0409e | 275 | |
a276ae74 LP |
276 | v = strndup((const char*)data + ident, len - ident); |
277 | if (!v) | |
5de0409e ZJS |
278 | return log_oom(); |
279 | ||
a276ae74 LP |
280 | free(*var); |
281 | *var = v; | |
282 | ||
5de0409e ZJS |
283 | return 0; |
284 | } | |
285 | ||
4f76ae1b | 286 | static void print_field(FILE* file, sd_journal *j) { |
a276ae74 | 287 | _cleanup_free_ char *value = NULL; |
4f76ae1b ZJS |
288 | const void *d; |
289 | size_t l; | |
290 | ||
e15758cc LP |
291 | assert(file); |
292 | assert(j); | |
293 | ||
a276ae74 | 294 | assert(arg_field); |
4f76ae1b ZJS |
295 | |
296 | SD_JOURNAL_FOREACH_DATA(j, d, l) | |
a276ae74 LP |
297 | retrieve(d, l, arg_field, &value); |
298 | ||
4f76ae1b ZJS |
299 | if (value) |
300 | fprintf(file, "%s\n", value); | |
301 | } | |
302 | ||
e15758cc | 303 | static int print_list(FILE* file, sd_journal *j, int had_legend) { |
a276ae74 | 304 | _cleanup_free_ char |
5de0409e | 305 | *pid = NULL, *uid = NULL, *gid = NULL, |
9fe13294 ZJS |
306 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, |
307 | *filename = NULL; | |
8bc8ab83 LP |
308 | const void *d; |
309 | size_t l; | |
684341b0 LP |
310 | usec_t t; |
311 | char buf[FORMAT_TIMESTAMP_MAX]; | |
312 | int r; | |
9fe13294 | 313 | bool present; |
8bc8ab83 | 314 | |
e15758cc LP |
315 | assert(file); |
316 | assert(j); | |
317 | ||
8bc8ab83 | 318 | SD_JOURNAL_FOREACH_DATA(j, d, l) { |
8bc8ab83 LP |
319 | retrieve(d, l, "COREDUMP_PID", &pid); |
320 | retrieve(d, l, "COREDUMP_UID", &uid); | |
321 | retrieve(d, l, "COREDUMP_GID", &gid); | |
322 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
323 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
a276ae74 LP |
324 | retrieve(d, l, "COREDUMP_COMM", &comm); |
325 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
9fe13294 | 326 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
8bc8ab83 | 327 | } |
5de0409e | 328 | |
9fe13294 | 329 | if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline && !filename) { |
684341b0 LP |
330 | log_warning("Empty coredump log entry"); |
331 | return -EINVAL; | |
332 | } | |
333 | ||
334 | r = sd_journal_get_realtime_usec(j, &t); | |
23bbb0de MS |
335 | if (r < 0) |
336 | return log_error_errno(r, "Failed to get realtime timestamp: %m"); | |
5de0409e | 337 | |
684341b0 | 338 | format_timestamp(buf, sizeof(buf), t); |
9fe13294 | 339 | present = filename && access(filename, F_OK) == 0; |
684341b0 | 340 | |
9a340880 | 341 | if (!had_legend && !arg_no_legend) |
9fe13294 | 342 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 343 | FORMAT_TIMESTAMP_WIDTH, "TIME", |
5de0409e ZJS |
344 | 6, "PID", |
345 | 5, "UID", | |
346 | 5, "GID", | |
684341b0 | 347 | 3, "SIG", |
9fe13294 | 348 | 1, "PRESENT", |
684341b0 | 349 | "EXE"); |
5de0409e | 350 | |
9fe13294 | 351 | fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n", |
c3f84106 | 352 | FORMAT_TIMESTAMP_WIDTH, buf, |
a276ae74 LP |
353 | 6, strna(pid), |
354 | 5, strna(uid), | |
355 | 5, strna(gid), | |
356 | 3, strna(sgnl), | |
9fe13294 | 357 | 1, present ? "*" : "", |
a276ae74 | 358 | strna(exe ?: (comm ?: cmdline))); |
684341b0 LP |
359 | |
360 | return 0; | |
5de0409e ZJS |
361 | } |
362 | ||
e15758cc LP |
363 | static int print_info(FILE *file, sd_journal *j, bool need_space) { |
364 | _cleanup_free_ char | |
365 | *pid = NULL, *uid = NULL, *gid = NULL, | |
366 | *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL, | |
367 | *unit = NULL, *user_unit = NULL, *session = NULL, | |
a035f819 | 368 | *boot_id = NULL, *machine_id = NULL, *hostname = NULL, |
9fe13294 ZJS |
369 | *slice = NULL, *cgroup = NULL, *owner_uid = NULL, |
370 | *message = NULL, *timestamp = NULL, *filename = NULL; | |
e15758cc LP |
371 | const void *d; |
372 | size_t l; | |
4b8cbe9a | 373 | int r; |
e15758cc LP |
374 | |
375 | assert(file); | |
376 | assert(j); | |
377 | ||
378 | SD_JOURNAL_FOREACH_DATA(j, d, l) { | |
379 | retrieve(d, l, "COREDUMP_PID", &pid); | |
380 | retrieve(d, l, "COREDUMP_UID", &uid); | |
381 | retrieve(d, l, "COREDUMP_GID", &gid); | |
382 | retrieve(d, l, "COREDUMP_SIGNAL", &sgnl); | |
383 | retrieve(d, l, "COREDUMP_EXE", &exe); | |
384 | retrieve(d, l, "COREDUMP_COMM", &comm); | |
385 | retrieve(d, l, "COREDUMP_CMDLINE", &cmdline); | |
386 | retrieve(d, l, "COREDUMP_UNIT", &unit); | |
387 | retrieve(d, l, "COREDUMP_USER_UNIT", &user_unit); | |
388 | retrieve(d, l, "COREDUMP_SESSION", &session); | |
a035f819 LP |
389 | retrieve(d, l, "COREDUMP_OWNER_UID", &owner_uid); |
390 | retrieve(d, l, "COREDUMP_SLICE", &slice); | |
391 | retrieve(d, l, "COREDUMP_CGROUP", &cgroup); | |
4b8cbe9a | 392 | retrieve(d, l, "COREDUMP_TIMESTAMP", ×tamp); |
9fe13294 | 393 | retrieve(d, l, "COREDUMP_FILENAME", &filename); |
e15758cc LP |
394 | retrieve(d, l, "_BOOT_ID", &boot_id); |
395 | retrieve(d, l, "_MACHINE_ID", &machine_id); | |
396 | retrieve(d, l, "_HOSTNAME", &hostname); | |
8d4e028f | 397 | retrieve(d, l, "MESSAGE", &message); |
e15758cc LP |
398 | } |
399 | ||
400 | if (need_space) | |
401 | fputs("\n", file); | |
402 | ||
81cef14f LP |
403 | if (comm) |
404 | fprintf(file, | |
405 | " PID: %s%s%s (%s)\n", | |
1fc464f6 | 406 | ansi_highlight(), strna(pid), ansi_normal(), comm); |
81cef14f LP |
407 | else |
408 | fprintf(file, | |
409 | " PID: %s%s%s\n", | |
1fc464f6 | 410 | ansi_highlight(), strna(pid), ansi_normal()); |
a035f819 LP |
411 | |
412 | if (uid) { | |
413 | uid_t n; | |
414 | ||
415 | if (parse_uid(uid, &n) >= 0) { | |
416 | _cleanup_free_ char *u = NULL; | |
417 | ||
418 | u = uid_to_name(n); | |
419 | fprintf(file, | |
420 | " UID: %s (%s)\n", | |
421 | uid, u); | |
422 | } else { | |
423 | fprintf(file, | |
424 | " UID: %s\n", | |
425 | uid); | |
426 | } | |
427 | } | |
428 | ||
429 | if (gid) { | |
430 | gid_t n; | |
431 | ||
432 | if (parse_gid(gid, &n) >= 0) { | |
433 | _cleanup_free_ char *g = NULL; | |
434 | ||
435 | g = gid_to_name(n); | |
436 | fprintf(file, | |
437 | " GID: %s (%s)\n", | |
438 | gid, g); | |
439 | } else { | |
440 | fprintf(file, | |
441 | " GID: %s\n", | |
442 | gid); | |
443 | } | |
444 | } | |
e15758cc LP |
445 | |
446 | if (sgnl) { | |
447 | int sig; | |
448 | ||
449 | if (safe_atoi(sgnl, &sig) >= 0) | |
450 | fprintf(file, " Signal: %s (%s)\n", sgnl, signal_to_string(sig)); | |
451 | else | |
452 | fprintf(file, " Signal: %s\n", sgnl); | |
453 | } | |
454 | ||
4b8cbe9a LP |
455 | if (timestamp) { |
456 | usec_t u; | |
457 | ||
458 | r = safe_atou64(timestamp, &u); | |
459 | if (r >= 0) { | |
460 | char absolute[FORMAT_TIMESTAMP_MAX], relative[FORMAT_TIMESPAN_MAX]; | |
461 | ||
462 | fprintf(file, | |
463 | " Timestamp: %s (%s)\n", | |
464 | format_timestamp(absolute, sizeof(absolute), u), | |
465 | format_timestamp_relative(relative, sizeof(relative), u)); | |
466 | ||
467 | } else | |
468 | fprintf(file, " Timestamp: %s\n", timestamp); | |
469 | } | |
470 | ||
e15758cc LP |
471 | if (cmdline) |
472 | fprintf(file, " Command Line: %s\n", cmdline); | |
81cef14f | 473 | if (exe) |
1fc464f6 | 474 | fprintf(file, " Executable: %s%s%s\n", ansi_highlight(), exe, ansi_normal()); |
a035f819 LP |
475 | if (cgroup) |
476 | fprintf(file, " Control Group: %s\n", cgroup); | |
e15758cc LP |
477 | if (unit) |
478 | fprintf(file, " Unit: %s\n", unit); | |
479 | if (user_unit) | |
554ed50f | 480 | fprintf(file, " User Unit: %s\n", user_unit); |
a035f819 LP |
481 | if (slice) |
482 | fprintf(file, " Slice: %s\n", slice); | |
e15758cc LP |
483 | if (session) |
484 | fprintf(file, " Session: %s\n", session); | |
a035f819 LP |
485 | if (owner_uid) { |
486 | uid_t n; | |
487 | ||
488 | if (parse_uid(owner_uid, &n) >= 0) { | |
489 | _cleanup_free_ char *u = NULL; | |
490 | ||
491 | u = uid_to_name(n); | |
492 | fprintf(file, | |
493 | " Owner UID: %s (%s)\n", | |
494 | owner_uid, u); | |
495 | } else { | |
496 | fprintf(file, | |
497 | " Owner UID: %s\n", | |
498 | owner_uid); | |
499 | } | |
500 | } | |
e15758cc LP |
501 | if (boot_id) |
502 | fprintf(file, " Boot ID: %s\n", boot_id); | |
503 | if (machine_id) | |
504 | fprintf(file, " Machine ID: %s\n", machine_id); | |
505 | if (hostname) | |
506 | fprintf(file, " Hostname: %s\n", hostname); | |
507 | ||
9fe13294 ZJS |
508 | if (filename && access(filename, F_OK) == 0) |
509 | fprintf(file, " Coredump: %s\n", filename); | |
e15758cc | 510 | |
8d4e028f LP |
511 | if (message) { |
512 | _cleanup_free_ char *m = NULL; | |
513 | ||
514 | m = strreplace(message, "\n", "\n "); | |
515 | ||
516 | fprintf(file, " Message: %s\n", strstrip(m ?: message)); | |
517 | } | |
518 | ||
e15758cc LP |
519 | return 0; |
520 | } | |
521 | ||
ada45c78 | 522 | static int focus(sd_journal *j) { |
5de0409e ZJS |
523 | int r; |
524 | ||
5de0409e ZJS |
525 | r = sd_journal_seek_tail(j); |
526 | if (r == 0) | |
527 | r = sd_journal_previous(j); | |
23bbb0de MS |
528 | if (r < 0) |
529 | return log_error_errno(r, "Failed to search journal: %m"); | |
8bc8ab83 | 530 | if (r == 0) { |
0c51aada | 531 | log_error("No match found."); |
8bc8ab83 LP |
532 | return -ESRCH; |
533 | } | |
ada45c78 LP |
534 | return r; |
535 | } | |
5de0409e | 536 | |
0c51aada LP |
537 | static void print_entry(sd_journal *j, unsigned n_found) { |
538 | assert(j); | |
539 | ||
540 | if (arg_action == ACTION_INFO) | |
541 | print_info(stdout, j, n_found); | |
542 | else if (arg_field) | |
543 | print_field(stdout, j); | |
544 | else | |
545 | print_list(stdout, j, n_found); | |
546 | } | |
547 | ||
548 | static int dump_list(sd_journal *j) { | |
549 | unsigned n_found = 0; | |
550 | int r; | |
551 | ||
552 | assert(j); | |
553 | ||
554 | /* The coredumps are likely to compressed, and for just | |
555 | * listing them we don't need to decompress them, so let's | |
556 | * pick a fairly low data threshold here */ | |
557 | sd_journal_set_data_threshold(j, 4096); | |
558 | ||
559 | if (arg_one) { | |
560 | r = focus(j); | |
561 | if (r < 0) | |
562 | return r; | |
563 | ||
564 | print_entry(j, 0); | |
565 | } else { | |
566 | SD_JOURNAL_FOREACH(j) | |
567 | print_entry(j, n_found++); | |
568 | ||
569 | if (!arg_field && n_found <= 0) { | |
570 | log_notice("No coredumps found."); | |
571 | return -ESRCH; | |
572 | } | |
573 | } | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
9fe13294 ZJS |
578 | static int save_core(sd_journal *j, int fd, char **path, bool *unlink_temp) { |
579 | const char *data; | |
580 | _cleanup_free_ char *filename = NULL; | |
581 | size_t len; | |
ada45c78 | 582 | int r; |
fc6cec86 ZJS |
583 | _cleanup_close_ int fdt = -1; |
584 | char *temp = NULL; | |
ada45c78 | 585 | |
9fe13294 ZJS |
586 | assert((fd >= 0) != !!path); |
587 | assert(!!path == !!unlink_temp); | |
ada45c78 | 588 | |
fc6cec86 | 589 | /* Look for a coredump on disk first. */ |
9fe13294 ZJS |
590 | r = sd_journal_get_data(j, "COREDUMP_FILENAME", (const void**) &data, &len); |
591 | if (r < 0 && r != -ENOENT) | |
fc6cec86 | 592 | return log_error_errno(r, "Failed to retrieve COREDUMP_FILENAME: %m"); |
9fe13294 ZJS |
593 | else if (r == 0) |
594 | retrieve(data, len, "COREDUMP_FILENAME", &filename); | |
93b73b06 | 595 | |
954d3a51 ZJS |
596 | if (filename) { |
597 | if (access(filename, R_OK) < 0) | |
598 | return log_error_errno(errno, "File \"%s\" is not readable: %m", filename); | |
5de0409e | 599 | |
954d3a51 | 600 | if (path && !endswith(filename, ".xz") && !endswith(filename, ".lz4")) { |
d0c8806d TA |
601 | *path = filename; |
602 | filename = NULL; | |
a276ae74 | 603 | |
954d3a51 ZJS |
604 | return 0; |
605 | } | |
fc6cec86 | 606 | } |
a276ae74 | 607 | |
fc6cec86 ZJS |
608 | if (fd < 0) { |
609 | const char *vt; | |
992e8f22 | 610 | |
fc6cec86 | 611 | /* Create a temporary file to write the uncompressed core to. */ |
992e8f22 | 612 | |
fc6cec86 ZJS |
613 | r = var_tmp_dir(&vt); |
614 | if (r < 0) | |
615 | return log_error_errno(r, "Failed to acquire temporary directory path: %m"); | |
9fe13294 | 616 | |
fc6cec86 ZJS |
617 | temp = strjoin(vt, "/coredump-XXXXXX", NULL); |
618 | if (!temp) | |
619 | return log_oom(); | |
9fe13294 | 620 | |
fc6cec86 ZJS |
621 | fdt = mkostemp_safe(temp); |
622 | if (fdt < 0) | |
623 | return log_error_errno(fdt, "Failed to create temporary file: %m"); | |
624 | log_debug("Created temporary file %s", temp); | |
9fe13294 | 625 | |
fc6cec86 ZJS |
626 | fd = fdt; |
627 | } | |
628 | ||
629 | if (filename) { | |
d89c8fdf | 630 | #if defined(HAVE_XZ) || defined(HAVE_LZ4) |
fc6cec86 | 631 | _cleanup_close_ int fdf; |
9fe13294 | 632 | |
fc6cec86 ZJS |
633 | fdf = open(filename, O_RDONLY | O_CLOEXEC); |
634 | if (fdf < 0) { | |
635 | r = log_error_errno(errno, "Failed to open %s: %m", filename); | |
2fb8159f | 636 | goto error; |
fc6cec86 ZJS |
637 | } |
638 | ||
639 | r = decompress_stream(filename, fdf, fd, -1); | |
640 | if (r < 0) { | |
641 | log_error_errno(r, "Failed to decompress %s: %m", filename); | |
9fe13294 ZJS |
642 | goto error; |
643 | } | |
fc6cec86 ZJS |
644 | #else |
645 | log_error("Cannot decompress file. Compiled without compression support."); | |
646 | r = -EOPNOTSUPP; | |
647 | goto error; | |
648 | #endif | |
649 | } else { | |
650 | ssize_t sz; | |
a276ae74 | 651 | |
fc6cec86 ZJS |
652 | r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len); |
653 | if (r < 0) | |
654 | return log_error_errno(r, | |
655 | r == -ENOENT ? "Core file was not saved for this entry." : | |
656 | "Failed to retrieve COREDUMP field: %m"); | |
657 | ||
658 | assert(len >= 9); | |
659 | data += 9; | |
660 | len -= 9; | |
661 | ||
954d3a51 | 662 | sz = write(fd, data, len); |
fc6cec86 | 663 | if (sz < 0) { |
954d3a51 | 664 | r = log_error_errno(errno, "Failed to write output: %m"); |
fc6cec86 | 665 | goto error; |
a276ae74 | 666 | } |
fc6cec86 | 667 | if (sz != (ssize_t) len) { |
954d3a51 | 668 | log_error("Short write to output."); |
fc6cec86 ZJS |
669 | r = -EIO; |
670 | goto error; | |
671 | } | |
672 | } | |
a276ae74 | 673 | |
fc6cec86 ZJS |
674 | if (temp) { |
675 | *path = temp; | |
676 | *unlink_temp = true; | |
677 | } | |
678 | return 0; | |
9fe13294 ZJS |
679 | |
680 | error: | |
fc6cec86 ZJS |
681 | if (temp) { |
682 | unlink(temp); | |
683 | log_debug("Removed temporary file %s", temp); | |
9fe13294 | 684 | } |
fc6cec86 | 685 | return r; |
9fe13294 | 686 | } |
a276ae74 | 687 | |
9fe13294 ZJS |
688 | static int dump_core(sd_journal* j) { |
689 | int r; | |
690 | ||
691 | assert(j); | |
692 | ||
693 | r = focus(j); | |
694 | if (r < 0) | |
ada45c78 | 695 | return r; |
ada45c78 | 696 | |
3774cf57 | 697 | print_info(arg_output ? stdout : stderr, j, false); |
9fe13294 | 698 | |
3774cf57 | 699 | if (on_tty() && !arg_output) { |
9fe13294 ZJS |
700 | log_error("Refusing to dump core to tty."); |
701 | return -ENOTTY; | |
702 | } | |
703 | ||
3774cf57 | 704 | r = save_core(j, arg_output ? fileno(arg_output) : STDOUT_FILENO, NULL, NULL); |
23bbb0de MS |
705 | if (r < 0) |
706 | return log_error_errno(r, "Coredump retrieval failed: %m"); | |
5de0409e ZJS |
707 | |
708 | r = sd_journal_previous(j); | |
cfeead6c | 709 | if (r > 0) |
9f6445e3 | 710 | log_warning("More than one entry matches, ignoring rest."); |
5de0409e ZJS |
711 | |
712 | return 0; | |
713 | } | |
714 | ||
ada45c78 | 715 | static int run_gdb(sd_journal *j) { |
de8f6e54 | 716 | _cleanup_free_ char *exe = NULL, *path = NULL; |
9fe13294 ZJS |
717 | bool unlink_path = false; |
718 | const char *data; | |
a276ae74 | 719 | siginfo_t st; |
ada45c78 | 720 | size_t len; |
ada45c78 | 721 | pid_t pid; |
ada45c78 | 722 | int r; |
ada45c78 LP |
723 | |
724 | assert(j); | |
725 | ||
726 | r = focus(j); | |
727 | if (r < 0) | |
728 | return r; | |
729 | ||
e15758cc LP |
730 | print_info(stdout, j, false); |
731 | fputs("\n", stdout); | |
ada45c78 LP |
732 | |
733 | r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len); | |
23bbb0de MS |
734 | if (r < 0) |
735 | return log_error_errno(r, "Failed to retrieve COREDUMP_EXE field: %m"); | |
ada45c78 | 736 | |
9fe13294 ZJS |
737 | assert(len > strlen("COREDUMP_EXE=")); |
738 | data += strlen("COREDUMP_EXE="); | |
739 | len -= strlen("COREDUMP_EXE="); | |
ada45c78 LP |
740 | |
741 | exe = strndup(data, len); | |
742 | if (!exe) | |
743 | return log_oom(); | |
744 | ||
745 | if (endswith(exe, " (deleted)")) { | |
746 | log_error("Binary already deleted."); | |
747 | return -ENOENT; | |
748 | } | |
749 | ||
a276ae74 LP |
750 | if (!path_is_absolute(exe)) { |
751 | log_error("Binary is not an absolute path."); | |
752 | return -ENOENT; | |
753 | } | |
754 | ||
9fe13294 | 755 | r = save_core(j, -1, &path, &unlink_path); |
23bbb0de MS |
756 | if (r < 0) |
757 | return log_error_errno(r, "Failed to retrieve core: %m"); | |
ada45c78 LP |
758 | |
759 | pid = fork(); | |
760 | if (pid < 0) { | |
76ef789d | 761 | r = log_error_errno(errno, "Failed to fork(): %m"); |
ada45c78 LP |
762 | goto finish; |
763 | } | |
764 | if (pid == 0) { | |
ce30c8dc LP |
765 | (void) reset_all_signal_handlers(); |
766 | (void) reset_signal_mask(); | |
767 | ||
ada45c78 | 768 | execlp("gdb", "gdb", exe, path, NULL); |
a276ae74 | 769 | |
56f64d95 | 770 | log_error_errno(errno, "Failed to invoke gdb: %m"); |
ada45c78 LP |
771 | _exit(1); |
772 | } | |
773 | ||
774 | r = wait_for_terminate(pid, &st); | |
775 | if (r < 0) { | |
709f6e46 | 776 | log_error_errno(r, "Failed to wait for gdb: %m"); |
ada45c78 LP |
777 | goto finish; |
778 | } | |
779 | ||
780 | r = st.si_code == CLD_EXITED ? st.si_status : 255; | |
781 | ||
782 | finish: | |
9fe13294 ZJS |
783 | if (unlink_path) { |
784 | log_debug("Removed temporary file %s", path); | |
785 | unlink(path); | |
786 | } | |
a276ae74 | 787 | |
ada45c78 LP |
788 | return r; |
789 | } | |
790 | ||
5de0409e | 791 | int main(int argc, char *argv[]) { |
4afd3348 | 792 | _cleanup_(sd_journal_closep) sd_journal*j = NULL; |
5de0409e ZJS |
793 | const char* match; |
794 | Iterator it; | |
795 | int r = 0; | |
7fd1b19b | 796 | _cleanup_set_free_free_ Set *matches = NULL; |
5de0409e | 797 | |
a9cdc94f | 798 | setlocale(LC_ALL, ""); |
5de0409e ZJS |
799 | log_parse_environment(); |
800 | log_open(); | |
801 | ||
802 | matches = new_matches(); | |
2fb7a5ce ZJS |
803 | if (!matches) { |
804 | r = -ENOMEM; | |
5de0409e | 805 | goto end; |
2fb7a5ce | 806 | } |
5de0409e | 807 | |
763c7aa2 | 808 | r = parse_argv(argc, argv, matches); |
2fb7a5ce | 809 | if (r < 0) |
5de0409e ZJS |
810 | goto end; |
811 | ||
812 | if (arg_action == ACTION_NONE) | |
813 | goto end; | |
814 | ||
2cf4172a LP |
815 | sigbus_install(); |
816 | ||
b73e9a02 SW |
817 | if (arg_directory) { |
818 | r = sd_journal_open_directory(&j, arg_directory, 0); | |
819 | if (r < 0) { | |
820 | log_error_errno(r, "Failed to open journals in directory: %s: %m", arg_directory); | |
821 | goto end; | |
822 | } | |
823 | } else { | |
824 | r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY); | |
825 | if (r < 0) { | |
826 | log_error_errno(r, "Failed to open journal: %m"); | |
827 | goto end; | |
828 | } | |
5de0409e ZJS |
829 | } |
830 | ||
9fe13294 ZJS |
831 | /* We want full data, nothing truncated. */ |
832 | sd_journal_set_data_threshold(j, 0); | |
833 | ||
5de0409e | 834 | SET_FOREACH(match, matches, it) { |
5de0409e ZJS |
835 | r = sd_journal_add_match(j, match, strlen(match)); |
836 | if (r != 0) { | |
c33b3297 MS |
837 | log_error_errno(r, "Failed to add match '%s': %m", |
838 | match); | |
5de0409e ZJS |
839 | goto end; |
840 | } | |
841 | } | |
842 | ||
553d2243 | 843 | if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { |
6c17bf04 ZJS |
844 | _cleanup_free_ char *filter; |
845 | ||
846 | filter = journal_make_match_string(j); | |
847 | log_debug("Journal filter: %s", filter); | |
848 | } | |
849 | ||
5de0409e | 850 | switch(arg_action) { |
ada45c78 | 851 | |
5de0409e | 852 | case ACTION_LIST: |
e15758cc | 853 | case ACTION_INFO: |
ea4b98e6 | 854 | pager_open(arg_no_pager, false); |
5de0409e ZJS |
855 | r = dump_list(j); |
856 | break; | |
ada45c78 | 857 | |
5de0409e ZJS |
858 | case ACTION_DUMP: |
859 | r = dump_core(j); | |
860 | break; | |
ada45c78 LP |
861 | |
862 | case ACTION_GDB: | |
863 | r = run_gdb(j); | |
864 | break; | |
865 | ||
866 | default: | |
5de0409e ZJS |
867 | assert_not_reached("Shouldn't be here"); |
868 | } | |
869 | ||
870 | end: | |
5de0409e ZJS |
871 | pager_close(); |
872 | ||
3774cf57 LP |
873 | if (arg_output) |
874 | fclose(arg_output); | |
5de0409e | 875 | |
ada45c78 | 876 | return r >= 0 ? r : EXIT_FAILURE; |
5de0409e | 877 | } |