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95ed3294 TA |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Thomas H.P. Andersen | |
7 | Copyright 2010 Lennart Poettering | |
8 | Copyright 2011 Michal Schmidt | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU Lesser General Public License as published by | |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | ***/ | |
23 | ||
24 | #include <errno.h> | |
25 | #include <stdio.h> | |
26 | #include <unistd.h> | |
27 | ||
28 | #include "util.h" | |
29 | #include "mkdir.h" | |
30 | #include "strv.h" | |
31 | #include "path-util.h" | |
32 | #include "path-lookup.h" | |
33 | #include "log.h" | |
95ed3294 TA |
34 | #include "unit.h" |
35 | #include "unit-name.h" | |
36 | #include "special.h" | |
37 | #include "exit-status.h" | |
38 | #include "def.h" | |
39 | #include "env-util.h" | |
40 | #include "fileio.h" | |
41 | #include "hashmap.h" | |
42 | ||
43 | typedef enum RunlevelType { | |
44 | RUNLEVEL_UP, | |
45 | RUNLEVEL_DOWN | |
46 | } RunlevelType; | |
47 | ||
48 | static const struct { | |
49 | const char *path; | |
50 | const char *target; | |
51 | const RunlevelType type; | |
52 | } rcnd_table[] = { | |
53 | /* Standard SysV runlevels for start-up */ | |
54 | { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP }, | |
55 | { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP }, | |
56 | { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP }, | |
57 | { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP }, | |
58 | { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP }, | |
59 | ||
60 | /* Standard SysV runlevels for shutdown */ | |
61 | { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN }, | |
62 | { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN } | |
63 | ||
64 | /* Note that the order here matters, as we read the | |
65 | directories in this order, and we want to make sure that | |
66 | sysv_start_priority is known when we first load the | |
67 | unit. And that value we only know from S links. Hence | |
68 | UP must be read before DOWN */ | |
69 | }; | |
70 | ||
71 | typedef struct SysvStub { | |
72 | char *name; | |
73 | char *path; | |
74 | char *description; | |
75 | int sysv_start_priority; | |
76 | char *pid_file; | |
77 | char **before; | |
78 | char **after; | |
79 | char **wants; | |
260ad50f | 80 | char **wanted_by; |
95ed3294 TA |
81 | char **conflicts; |
82 | bool has_lsb; | |
83 | bool reload; | |
84 | } SysvStub; | |
85 | ||
86 | const char *arg_dest = "/tmp"; | |
87 | ||
88 | static int add_symlink(const char *service, const char *where) { | |
89 | _cleanup_free_ char *from = NULL, *to = NULL; | |
90 | int r; | |
91 | ||
92 | assert(service); | |
93 | assert(where); | |
94 | ||
95 | from = strjoin(arg_dest, "/", service, NULL); | |
96 | if (!from) | |
97 | return log_oom(); | |
98 | ||
99 | to = strjoin(arg_dest, "/", where, ".wants/", service, NULL); | |
100 | if (!to) | |
101 | return log_oom(); | |
102 | ||
103 | mkdir_parents_label(to, 0755); | |
104 | ||
105 | r = symlink(from, to); | |
106 | if (r < 0) { | |
107 | if (errno == EEXIST) | |
108 | return 0; | |
109 | return -errno; | |
110 | } | |
111 | ||
112 | return 1; | |
113 | } | |
114 | ||
115 | static int generate_unit_file(SysvStub *s) { | |
95ed3294 TA |
116 | char **p; |
117 | _cleanup_fclose_ FILE *f = NULL; | |
91e7bad4 | 118 | _cleanup_free_ char *unit = NULL; |
95ed3294 TA |
119 | _cleanup_free_ char *before = NULL; |
120 | _cleanup_free_ char *after = NULL; | |
260ad50f | 121 | _cleanup_free_ char *wants = NULL; |
95ed3294 TA |
122 | _cleanup_free_ char *conflicts = NULL; |
123 | int r; | |
124 | ||
125 | before = strv_join(s->before, " "); | |
126 | if (!before) | |
127 | return log_oom(); | |
128 | ||
129 | after = strv_join(s->after, " "); | |
130 | if (!after) | |
131 | return log_oom(); | |
132 | ||
260ad50f TA |
133 | wants = strv_join(s->wants, " "); |
134 | if (!wants) | |
135 | return log_oom(); | |
136 | ||
95ed3294 TA |
137 | conflicts = strv_join(s->conflicts, " "); |
138 | if (!conflicts) | |
139 | return log_oom(); | |
140 | ||
141 | unit = strjoin(arg_dest, "/", s->name, NULL); | |
142 | if (!unit) | |
143 | return log_oom(); | |
144 | ||
145 | f = fopen(unit, "wxe"); | |
146 | if (!f) { | |
147 | log_error("Failed to create unit file %s: %m", unit); | |
148 | return -errno; | |
149 | } | |
150 | ||
151 | fprintf(f, | |
152 | "# Automatically generated by systemd-sysv-generator\n\n" | |
153 | "[Unit]\n" | |
aad0a2c8 | 154 | "Documentation=man:systemd-sysv-generator(8)\n" |
95ed3294 TA |
155 | "SourcePath=%s\n" |
156 | "Description=%s\n", | |
157 | s->path, s->description); | |
158 | ||
159 | if (!isempty(before)) | |
160 | fprintf(f, "Before=%s\n", before); | |
161 | if (!isempty(after)) | |
162 | fprintf(f, "After=%s\n", after); | |
260ad50f TA |
163 | if (!isempty(wants)) |
164 | fprintf(f, "Wants=%s\n", wants); | |
95ed3294 TA |
165 | if (!isempty(conflicts)) |
166 | fprintf(f, "Conflicts=%s\n", conflicts); | |
167 | ||
168 | fprintf(f, | |
169 | "\n[Service]\n" | |
170 | "Type=forking\n" | |
171 | "Restart=no\n" | |
172 | "TimeoutSec=5min\n" | |
173 | "IgnoreSIGPIPE=no\n" | |
174 | "KillMode=process\n" | |
175 | "GuessMainPID=no\n" | |
176 | "RemainAfterExit=%s\n", | |
177 | yes_no(!s->pid_file)); | |
178 | ||
179 | if (s->sysv_start_priority > 0) | |
180 | fprintf(f, "SysVStartPriority=%d\n", s->sysv_start_priority); | |
181 | ||
182 | if (s->pid_file) | |
d171ed1c | 183 | fprintf(f, "PIDFile=%s\n", s->pid_file); |
95ed3294 TA |
184 | |
185 | fprintf(f, | |
186 | "ExecStart=%s start\n" | |
187 | "ExecStop=%s stop\n", | |
188 | s->path, s->path); | |
189 | ||
190 | if (s->reload) | |
191 | fprintf(f, "ExecReload=%s reload\n", s->path); | |
192 | ||
260ad50f | 193 | STRV_FOREACH(p, s->wanted_by) { |
95ed3294 TA |
194 | r = add_symlink(s->name, *p); |
195 | if (r < 0) | |
79008bdd | 196 | log_unit_error(s->name, "Failed to create 'Wants' symlink to %s: %s", *p, strerror(-r)); |
95ed3294 TA |
197 | } |
198 | ||
199 | return 0; | |
200 | } | |
201 | ||
202 | static bool usage_contains_reload(const char *line) { | |
203 | return (strcasestr(line, "{reload|") || | |
204 | strcasestr(line, "{reload}") || | |
205 | strcasestr(line, "{reload\"") || | |
206 | strcasestr(line, "|reload|") || | |
207 | strcasestr(line, "|reload}") || | |
208 | strcasestr(line, "|reload\"")); | |
209 | } | |
210 | ||
211 | static char *sysv_translate_name(const char *name) { | |
212 | char *r; | |
213 | ||
214 | r = new(char, strlen(name) + strlen(".service") + 1); | |
215 | if (!r) | |
216 | return NULL; | |
217 | ||
218 | if (endswith(name, ".sh")) | |
219 | /* Drop .sh suffix */ | |
220 | strcpy(stpcpy(r, name) - 3, ".service"); | |
221 | else | |
222 | /* Normal init script name */ | |
223 | strcpy(stpcpy(r, name), ".service"); | |
224 | ||
225 | return r; | |
226 | } | |
227 | ||
228 | static int sysv_translate_facility(const char *name, const char *filename, char **_r) { | |
229 | ||
230 | /* We silently ignore the $ prefix here. According to the LSB | |
231 | * spec it simply indicates whether something is a | |
232 | * standardized name or a distribution-specific one. Since we | |
233 | * just follow what already exists and do not introduce new | |
234 | * uses or names we don't care who introduced a new name. */ | |
235 | ||
236 | static const char * const table[] = { | |
237 | /* LSB defined facilities */ | |
238 | "local_fs", NULL, | |
239 | "network", SPECIAL_NETWORK_ONLINE_TARGET, | |
240 | "named", SPECIAL_NSS_LOOKUP_TARGET, | |
241 | "portmap", SPECIAL_RPCBIND_TARGET, | |
242 | "remote_fs", SPECIAL_REMOTE_FS_TARGET, | |
243 | "syslog", NULL, | |
244 | "time", SPECIAL_TIME_SYNC_TARGET, | |
245 | }; | |
246 | ||
247 | unsigned i; | |
248 | char *r; | |
249 | const char *n; | |
250 | ||
251 | assert(name); | |
252 | assert(_r); | |
253 | ||
254 | n = *name == '$' ? name + 1 : name; | |
255 | ||
256 | for (i = 0; i < ELEMENTSOF(table); i += 2) { | |
257 | ||
258 | if (!streq(table[i], n)) | |
259 | continue; | |
260 | ||
261 | if (!table[i+1]) | |
262 | return 0; | |
263 | ||
264 | r = strdup(table[i+1]); | |
265 | if (!r) | |
266 | return log_oom(); | |
267 | ||
268 | goto finish; | |
269 | } | |
270 | ||
271 | /* If we don't know this name, fallback heuristics to figure | |
272 | * out whether something is a target or a service alias. */ | |
273 | ||
274 | if (*name == '$') { | |
275 | if (!unit_prefix_is_valid(n)) | |
276 | return -EINVAL; | |
277 | ||
278 | /* Facilities starting with $ are most likely targets */ | |
279 | r = unit_name_build(n, NULL, ".target"); | |
280 | } else if (filename && streq(name, filename)) | |
281 | /* Names equaling the file name of the services are redundant */ | |
282 | return 0; | |
283 | else | |
284 | /* Everything else we assume to be normal service names */ | |
285 | r = sysv_translate_name(n); | |
286 | ||
287 | if (!r) | |
288 | return -ENOMEM; | |
289 | ||
290 | finish: | |
291 | *_r = r; | |
292 | ||
293 | return 1; | |
294 | } | |
295 | ||
296 | static int load_sysv(SysvStub *s) { | |
297 | _cleanup_fclose_ FILE *f; | |
298 | unsigned line = 0; | |
299 | int r; | |
300 | enum { | |
301 | NORMAL, | |
302 | DESCRIPTION, | |
303 | LSB, | |
304 | LSB_DESCRIPTION, | |
305 | USAGE_CONTINUATION | |
306 | } state = NORMAL; | |
307 | _cleanup_free_ char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL; | |
308 | char *description; | |
309 | bool supports_reload = false; | |
310 | ||
311 | assert(s); | |
312 | ||
313 | f = fopen(s->path, "re"); | |
314 | if (!f) | |
315 | return errno == ENOENT ? 0 : -errno; | |
316 | ||
317 | while (!feof(f)) { | |
318 | char l[LINE_MAX], *t; | |
319 | ||
320 | if (!fgets(l, sizeof(l), f)) { | |
321 | if (feof(f)) | |
322 | break; | |
323 | ||
79008bdd | 324 | log_unit_error(s->name, |
95ed3294 TA |
325 | "Failed to read configuration file '%s': %m", |
326 | s->path); | |
327 | return -errno; | |
328 | } | |
329 | ||
330 | line++; | |
331 | ||
332 | t = strstrip(l); | |
333 | if (*t != '#') { | |
334 | /* Try to figure out whether this init script supports | |
335 | * the reload operation. This heuristic looks for | |
336 | * "Usage" lines which include the reload option. */ | |
337 | if ( state == USAGE_CONTINUATION || | |
338 | (state == NORMAL && strcasestr(t, "usage"))) { | |
339 | if (usage_contains_reload(t)) { | |
340 | supports_reload = true; | |
341 | state = NORMAL; | |
342 | } else if (t[strlen(t)-1] == '\\') | |
343 | state = USAGE_CONTINUATION; | |
344 | else | |
345 | state = NORMAL; | |
346 | } | |
347 | ||
348 | continue; | |
349 | } | |
350 | ||
351 | if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) { | |
352 | state = LSB; | |
353 | s->has_lsb = true; | |
354 | continue; | |
355 | } | |
356 | ||
357 | if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) { | |
358 | state = NORMAL; | |
359 | continue; | |
360 | } | |
361 | ||
362 | t++; | |
363 | t += strspn(t, WHITESPACE); | |
364 | ||
365 | if (state == NORMAL) { | |
366 | ||
367 | /* Try to parse Red Hat style description */ | |
368 | ||
369 | if (startswith_no_case(t, "description:")) { | |
370 | ||
371 | size_t k = strlen(t); | |
372 | char *d; | |
373 | const char *j; | |
374 | ||
375 | if (t[k-1] == '\\') { | |
376 | state = DESCRIPTION; | |
377 | t[k-1] = 0; | |
378 | } | |
379 | ||
380 | j = strstrip(t+12); | |
381 | if (j && *j) { | |
382 | d = strdup(j); | |
383 | if (!d) | |
384 | return -ENOMEM; | |
385 | } else | |
386 | d = NULL; | |
387 | ||
388 | free(chkconfig_description); | |
389 | chkconfig_description = d; | |
390 | ||
391 | } else if (startswith_no_case(t, "pidfile:")) { | |
392 | ||
393 | char *fn; | |
394 | ||
395 | state = NORMAL; | |
396 | ||
397 | fn = strstrip(t+8); | |
398 | if (!path_is_absolute(fn)) { | |
79008bdd | 399 | log_unit_error(s->name, |
95ed3294 TA |
400 | "[%s:%u] PID file not absolute. Ignoring.", |
401 | s->path, line); | |
402 | continue; | |
403 | } | |
404 | ||
405 | fn = strdup(fn); | |
406 | if (!fn) | |
407 | return -ENOMEM; | |
408 | ||
409 | free(s->pid_file); | |
410 | s->pid_file = fn; | |
411 | } | |
412 | ||
413 | } else if (state == DESCRIPTION) { | |
414 | ||
415 | /* Try to parse Red Hat style description | |
416 | * continuation */ | |
417 | ||
418 | size_t k = strlen(t); | |
419 | char *j; | |
420 | ||
421 | if (t[k-1] == '\\') | |
422 | t[k-1] = 0; | |
423 | else | |
424 | state = NORMAL; | |
425 | ||
426 | j = strstrip(t); | |
427 | if (j && *j) { | |
428 | char *d = NULL; | |
429 | ||
430 | if (chkconfig_description) | |
431 | d = strjoin(chkconfig_description, " ", j, NULL); | |
432 | else | |
433 | d = strdup(j); | |
434 | ||
435 | if (!d) | |
436 | return -ENOMEM; | |
437 | ||
438 | free(chkconfig_description); | |
439 | chkconfig_description = d; | |
440 | } | |
441 | ||
442 | } else if (state == LSB || state == LSB_DESCRIPTION) { | |
443 | ||
444 | if (startswith_no_case(t, "Provides:")) { | |
a2a5291b | 445 | const char *word, *state_; |
95ed3294 TA |
446 | size_t z; |
447 | ||
448 | state = LSB; | |
449 | ||
a2a5291b | 450 | FOREACH_WORD_QUOTED(word, z, t+9, state_) { |
95ed3294 TA |
451 | _cleanup_free_ char *n = NULL, *m = NULL; |
452 | ||
a2a5291b | 453 | n = strndup(word, z); |
95ed3294 TA |
454 | if (!n) |
455 | return -ENOMEM; | |
456 | ||
457 | r = sysv_translate_facility(n, basename(s->path), &m); | |
458 | ||
459 | if (r < 0) | |
460 | return r; | |
461 | ||
462 | if (r == 0) | |
463 | continue; | |
464 | ||
465 | if (unit_name_to_type(m) != UNIT_SERVICE) { | |
466 | /* NB: SysV targets | |
467 | * which are provided | |
468 | * by a service are | |
469 | * pulled in by the | |
470 | * services, as an | |
471 | * indication that the | |
472 | * generic service is | |
473 | * now available. This | |
474 | * is strictly | |
475 | * one-way. The | |
476 | * targets do NOT pull | |
477 | * in the SysV | |
478 | * services! */ | |
479 | r = strv_extend(&s->before, m); | |
480 | if (r < 0) | |
481 | return log_oom(); | |
482 | r = strv_extend(&s->wants, m); | |
483 | if (r < 0) | |
484 | return log_oom(); | |
805b573f LN |
485 | if (streq(m, SPECIAL_NETWORK_ONLINE_TARGET)) { |
486 | r = strv_extend(&s->before, SPECIAL_NETWORK_TARGET); | |
487 | if (r < 0) | |
488 | return log_oom(); | |
489 | } | |
95ed3294 TA |
490 | } |
491 | ||
492 | if (r < 0) | |
79008bdd | 493 | log_unit_error(s->name, |
95ed3294 TA |
494 | "[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", |
495 | s->path, line, m, strerror(-r)); | |
496 | } | |
b2fadec6 | 497 | if (!isempty(state_)) |
79008bdd | 498 | log_unit_error(s->name, |
b2fadec6 ZJS |
499 | "[%s:%u] Trailing garbage in Provides, ignoring.", |
500 | s->path, line); | |
95ed3294 TA |
501 | |
502 | } else if (startswith_no_case(t, "Required-Start:") || | |
503 | startswith_no_case(t, "Should-Start:") || | |
504 | startswith_no_case(t, "X-Start-Before:") || | |
505 | startswith_no_case(t, "X-Start-After:")) { | |
a2a5291b | 506 | const char *word, *state_; |
95ed3294 TA |
507 | size_t z; |
508 | ||
509 | state = LSB; | |
510 | ||
a2a5291b | 511 | FOREACH_WORD_QUOTED(word, z, strchr(t, ':')+1, state_) { |
95ed3294 TA |
512 | _cleanup_free_ char *n = NULL, *m = NULL; |
513 | bool is_before; | |
514 | ||
a2a5291b | 515 | n = strndup(word, z); |
95ed3294 TA |
516 | if (!n) |
517 | return -ENOMEM; | |
518 | ||
519 | r = sysv_translate_facility(n, basename(s->path), &m); | |
520 | if (r < 0) { | |
79008bdd | 521 | log_unit_error(s->name, |
95ed3294 TA |
522 | "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", |
523 | s->path, line, n, strerror(-r)); | |
524 | continue; | |
525 | } | |
526 | ||
527 | if (r == 0) | |
528 | continue; | |
529 | ||
530 | is_before = startswith_no_case(t, "X-Start-Before:"); | |
531 | ||
532 | if (streq(m, SPECIAL_NETWORK_ONLINE_TARGET) && !is_before) { | |
533 | /* the network-online target is special, as it needs to be actively pulled in */ | |
534 | r = strv_extend(&s->after, m); | |
535 | if (r < 0) | |
536 | return log_oom(); | |
537 | r = strv_extend(&s->wants, m); | |
538 | if (r < 0) | |
539 | return log_oom(); | |
540 | } | |
541 | else { | |
542 | if (is_before) { | |
543 | r = strv_extend(&s->before, m); | |
544 | if (r < 0) | |
545 | return log_oom(); | |
546 | } | |
547 | else { | |
548 | r = strv_extend(&s->after, m); | |
549 | if (r < 0) | |
550 | return log_oom(); | |
551 | } | |
552 | } | |
553 | ||
554 | if (r < 0) | |
79008bdd | 555 | log_unit_error(s->name, |
95ed3294 TA |
556 | "[%s:%u] Failed to add dependency on %s, ignoring: %s", |
557 | s->path, line, m, strerror(-r)); | |
558 | } | |
b2fadec6 | 559 | if (!isempty(state_)) |
79008bdd | 560 | log_unit_error(s->name, |
b2fadec6 ZJS |
561 | "[%s:%u] Trailing garbage in %*s, ignoring.", |
562 | s->path, line, | |
563 | (int)(strchr(t, ':') - t), t); | |
95ed3294 TA |
564 | |
565 | } else if (startswith_no_case(t, "Description:")) { | |
566 | char *d, *j; | |
567 | ||
568 | state = LSB_DESCRIPTION; | |
569 | ||
570 | j = strstrip(t+12); | |
571 | if (j && *j) { | |
572 | d = strdup(j); | |
573 | if (!d) | |
574 | return -ENOMEM; | |
575 | } else | |
576 | d = NULL; | |
577 | ||
578 | free(long_description); | |
579 | long_description = d; | |
580 | ||
581 | } else if (startswith_no_case(t, "Short-Description:")) { | |
582 | char *d, *j; | |
583 | ||
584 | state = LSB; | |
585 | ||
586 | j = strstrip(t+18); | |
587 | if (j && *j) { | |
588 | d = strdup(j); | |
589 | if (!d) | |
590 | return -ENOMEM; | |
591 | } else | |
592 | d = NULL; | |
593 | ||
594 | free(short_description); | |
595 | short_description = d; | |
596 | ||
597 | } else if (state == LSB_DESCRIPTION) { | |
598 | ||
599 | if (startswith(l, "#\t") || startswith(l, "# ")) { | |
600 | char *j; | |
601 | ||
602 | j = strstrip(t); | |
603 | if (j && *j) { | |
604 | char *d = NULL; | |
605 | ||
606 | if (long_description) | |
607 | d = strjoin(long_description, " ", t, NULL); | |
608 | else | |
609 | d = strdup(j); | |
610 | ||
611 | if (!d) | |
612 | return -ENOMEM; | |
613 | ||
614 | free(long_description); | |
615 | long_description = d; | |
616 | } | |
617 | ||
618 | } else | |
619 | state = LSB; | |
620 | } | |
621 | } | |
622 | } | |
623 | ||
624 | s->reload = supports_reload; | |
625 | ||
626 | /* We use the long description only if | |
627 | * no short description is set. */ | |
628 | ||
629 | if (short_description) | |
630 | description = short_description; | |
631 | else if (chkconfig_description) | |
632 | description = chkconfig_description; | |
633 | else if (long_description) | |
634 | description = long_description; | |
635 | else | |
636 | description = NULL; | |
637 | ||
638 | if (description) { | |
639 | char *d; | |
640 | ||
641 | d = strappend(s->has_lsb ? "LSB: " : "SYSV: ", description); | |
642 | if (!d) | |
643 | return -ENOMEM; | |
644 | ||
645 | s->description = d; | |
646 | } | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | static int fix_order(SysvStub *s, Hashmap *all_services) { | |
652 | SysvStub *other; | |
653 | Iterator j; | |
654 | int r; | |
655 | ||
656 | assert(s); | |
657 | ||
658 | if (s->sysv_start_priority < 0) | |
659 | return 0; | |
660 | ||
661 | HASHMAP_FOREACH(other, all_services, j) { | |
662 | if (s == other) | |
663 | continue; | |
664 | ||
665 | if (other->sysv_start_priority < 0) | |
666 | continue; | |
667 | ||
668 | /* If both units have modern headers we don't care | |
669 | * about the priorities */ | |
670 | if (s->has_lsb && other->has_lsb) | |
671 | continue; | |
672 | ||
673 | if (other->sysv_start_priority < s->sysv_start_priority) { | |
674 | r = strv_extend(&s->after, other->name); | |
675 | if (r < 0) | |
676 | return log_oom(); | |
677 | } | |
678 | else if (other->sysv_start_priority > s->sysv_start_priority) { | |
679 | r = strv_extend(&s->before, other->name); | |
680 | if (r < 0) | |
681 | return log_oom(); | |
682 | } | |
683 | else | |
684 | continue; | |
685 | ||
686 | /* FIXME: Maybe we should compare the name here lexicographically? */ | |
687 | } | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
692 | static int enumerate_sysv(LookupPaths lp, Hashmap *all_services) { | |
693 | char **path; | |
694 | ||
695 | STRV_FOREACH(path, lp.sysvinit_path) { | |
696 | _cleanup_closedir_ DIR *d = NULL; | |
697 | struct dirent *de; | |
698 | ||
699 | d = opendir(*path); | |
700 | if (!d) { | |
701 | if (errno != ENOENT) | |
702 | log_warning("opendir(%s) failed: %m", *path); | |
703 | continue; | |
704 | } | |
705 | ||
706 | while ((de = readdir(d))) { | |
707 | SysvStub *service; | |
708 | struct stat st; | |
709 | _cleanup_free_ char *fpath = NULL, *name = NULL; | |
710 | int r; | |
711 | ||
712 | if (ignore_file(de->d_name)) | |
713 | continue; | |
714 | ||
715 | fpath = strjoin(*path, "/", de->d_name, NULL); | |
716 | if (!fpath) | |
717 | return log_oom(); | |
718 | ||
719 | if (stat(fpath, &st) < 0) | |
720 | continue; | |
721 | ||
722 | if (!(st.st_mode & S_IXUSR)) | |
723 | continue; | |
724 | ||
725 | name = sysv_translate_name(de->d_name); | |
726 | if (!name) | |
727 | return log_oom(); | |
728 | ||
729 | if (hashmap_contains(all_services, name)) | |
730 | continue; | |
731 | ||
732 | service = new0(SysvStub, 1); | |
733 | if (!service) | |
734 | return log_oom(); | |
735 | ||
736 | service->sysv_start_priority = -1; | |
737 | service->name = name; | |
738 | service->path = fpath; | |
739 | ||
740 | r = hashmap_put(all_services, service->name, service); | |
741 | if (r < 0) | |
742 | return log_oom(); | |
743 | ||
744 | name = fpath = NULL; | |
745 | } | |
746 | } | |
747 | ||
748 | return 0; | |
749 | } | |
750 | ||
751 | static int set_dependencies_from_rcnd(LookupPaths lp, Hashmap *all_services) { | |
752 | char **p; | |
753 | unsigned i; | |
754 | _cleanup_closedir_ DIR *d = NULL; | |
755 | _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL; | |
756 | SysvStub *service; | |
757 | Iterator j; | |
758 | Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {}; | |
759 | _cleanup_set_free_ Set *shutdown_services = NULL; | |
760 | int r = 0; | |
761 | ||
762 | STRV_FOREACH(p, lp.sysvrcnd_path) | |
763 | for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) { | |
764 | struct dirent *de; | |
765 | ||
766 | free(path); | |
767 | path = strjoin(*p, "/", rcnd_table[i].path, NULL); | |
768 | if (!path) | |
769 | return -ENOMEM; | |
770 | ||
771 | if (d) | |
772 | closedir(d); | |
773 | ||
774 | d = opendir(path); | |
775 | if (!d) { | |
776 | if (errno != ENOENT) | |
777 | log_warning("opendir(%s) failed: %m", path); | |
778 | ||
779 | continue; | |
780 | } | |
781 | ||
782 | while ((de = readdir(d))) { | |
783 | int a, b; | |
784 | ||
785 | if (ignore_file(de->d_name)) | |
786 | continue; | |
787 | ||
788 | if (de->d_name[0] != 'S' && de->d_name[0] != 'K') | |
789 | continue; | |
790 | ||
791 | if (strlen(de->d_name) < 4) | |
792 | continue; | |
793 | ||
794 | a = undecchar(de->d_name[1]); | |
795 | b = undecchar(de->d_name[2]); | |
796 | ||
797 | if (a < 0 || b < 0) | |
798 | continue; | |
799 | ||
800 | free(fpath); | |
801 | fpath = strjoin(*p, "/", de->d_name, NULL); | |
802 | if (!fpath) { | |
803 | r = -ENOMEM; | |
804 | goto finish; | |
805 | } | |
806 | ||
807 | name = sysv_translate_name(de->d_name + 3); | |
808 | if (!name) { | |
809 | r = log_oom(); | |
810 | goto finish; | |
811 | } | |
812 | ||
8c84621c TA |
813 | service = hashmap_get(all_services, name); |
814 | if (!service){ | |
855d1113 | 815 | log_warning("Could not find init script for %s", name); |
95ed3294 TA |
816 | continue; |
817 | } | |
818 | ||
819 | if (de->d_name[0] == 'S') { | |
820 | ||
821 | if (rcnd_table[i].type == RUNLEVEL_UP) { | |
822 | service->sysv_start_priority = | |
823 | MAX(a*10 + b, service->sysv_start_priority); | |
824 | } | |
825 | ||
d5099efc | 826 | r = set_ensure_allocated(&runlevel_services[i], NULL); |
95ed3294 TA |
827 | if (r < 0) |
828 | goto finish; | |
829 | ||
830 | r = set_put(runlevel_services[i], service); | |
831 | if (r < 0) | |
832 | goto finish; | |
833 | ||
834 | } else if (de->d_name[0] == 'K' && | |
835 | (rcnd_table[i].type == RUNLEVEL_DOWN)) { | |
836 | ||
d5099efc | 837 | r = set_ensure_allocated(&shutdown_services, NULL); |
95ed3294 TA |
838 | if (r < 0) |
839 | goto finish; | |
840 | ||
841 | r = set_put(shutdown_services, service); | |
842 | if (r < 0) | |
843 | goto finish; | |
844 | } | |
845 | } | |
846 | } | |
847 | ||
848 | ||
849 | for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) | |
850 | SET_FOREACH(service, runlevel_services[i], j) { | |
851 | r = strv_extend(&service->before, rcnd_table[i].target); | |
852 | if (r < 0) | |
853 | return log_oom(); | |
260ad50f | 854 | r = strv_extend(&service->wanted_by, rcnd_table[i].target); |
95ed3294 TA |
855 | if (r < 0) |
856 | return log_oom(); | |
857 | } | |
858 | ||
859 | SET_FOREACH(service, shutdown_services, j) { | |
860 | r = strv_extend(&service->before, SPECIAL_SHUTDOWN_TARGET); | |
861 | if (r < 0) | |
862 | return log_oom(); | |
863 | r = strv_extend(&service->conflicts, SPECIAL_SHUTDOWN_TARGET); | |
864 | if (r < 0) | |
865 | return log_oom(); | |
866 | } | |
867 | ||
868 | r = 0; | |
869 | ||
870 | finish: | |
871 | ||
872 | for (i = 0; i < ELEMENTSOF(rcnd_table); i++) | |
873 | set_free(runlevel_services[i]); | |
874 | ||
875 | return r; | |
876 | } | |
877 | ||
878 | int main(int argc, char *argv[]) { | |
879 | int r, q; | |
880 | LookupPaths lp; | |
881 | Hashmap *all_services; | |
882 | SysvStub *service; | |
883 | Iterator j; | |
884 | ||
885 | if (argc > 1 && argc != 4) { | |
886 | log_error("This program takes three or no arguments."); | |
887 | return EXIT_FAILURE; | |
888 | } | |
889 | ||
890 | if (argc > 1) | |
891 | arg_dest = argv[3]; | |
892 | ||
893 | log_set_target(LOG_TARGET_SAFE); | |
894 | log_parse_environment(); | |
895 | log_open(); | |
896 | ||
897 | umask(0022); | |
898 | ||
899 | r = lookup_paths_init(&lp, SYSTEMD_SYSTEM, true, NULL, NULL, NULL, NULL); | |
900 | if (r < 0) { | |
901 | log_error("Failed to find lookup paths."); | |
902 | return EXIT_FAILURE; | |
903 | } | |
904 | ||
d5099efc | 905 | all_services = hashmap_new(&string_hash_ops); |
95ed3294 TA |
906 | if (!all_services) { |
907 | log_oom(); | |
908 | return EXIT_FAILURE; | |
909 | } | |
910 | ||
911 | r = enumerate_sysv(lp, all_services); | |
912 | if (r < 0) { | |
913 | log_error("Failed to generate units for all init scripts."); | |
914 | return EXIT_FAILURE; | |
915 | } | |
916 | ||
917 | r = set_dependencies_from_rcnd(lp, all_services); | |
918 | if (r < 0) { | |
919 | log_error("Failed to read runlevels from rcnd links."); | |
920 | return EXIT_FAILURE; | |
921 | } | |
922 | ||
923 | HASHMAP_FOREACH(service, all_services, j) { | |
924 | q = load_sysv(service); | |
925 | if (q < 0) | |
926 | continue; | |
927 | ||
928 | q = fix_order(service, all_services); | |
929 | if (q < 0) | |
930 | continue; | |
931 | ||
932 | q = generate_unit_file(service); | |
933 | if (q < 0) | |
934 | continue; | |
935 | } | |
936 | ||
937 | return EXIT_SUCCESS; | |
938 | } |