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[thirdparty/systemd.git] / src / sysv-generator / sysv-generator.c
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1/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3#include <stdio.h>
4#include <stdlib.h>
5#include <unistd.h>
6
7#include "sd-messages.h"
8
9#include "alloc-util.h"
10#include "dirent-util.h"
11#include "exit-status.h"
12#include "extract-word.h"
13#include "fd-util.h"
14#include "fileio.h"
15#include "generator.h"
16#include "glyph-util.h"
17#include "hashmap.h"
18#include "hexdecoct.h"
19#include "initrd-util.h"
20#include "install.h"
21#include "log.h"
22#include "path-lookup.h"
23#include "path-util.h"
24#include "set.h"
25#include "special.h"
26#include "specifier.h"
27#include "stat-util.h"
28#include "string-util.h"
29#include "strv.h"
30#include "unit-name.h"
31
32/* 🚨 Note: this generator is deprecated! Please do not add new features! Instead, please port remaining SysV
33 * scripts over to native unit files! Thank you! 🚨 */
34
35static const struct {
36 const char *path;
37 const char *target;
38} rcnd_table[] = {
39 /* Standard SysV runlevels for start-up */
40 { "rc1.d", SPECIAL_RESCUE_TARGET },
41 { "rc2.d", SPECIAL_MULTI_USER_TARGET },
42 { "rc3.d", SPECIAL_MULTI_USER_TARGET },
43 { "rc4.d", SPECIAL_MULTI_USER_TARGET },
44 { "rc5.d", SPECIAL_GRAPHICAL_TARGET },
45
46 /* We ignore the SysV runlevels for shutdown here, as SysV services get default dependencies anyway, and that
47 * means they are shut down anyway at system power off if running. */
48};
49
50static const char *arg_dest = NULL;
51
52typedef struct SysvStub {
53 char *name;
54 char *path;
55 char *description;
56 int sysv_start_priority;
57 char *pid_file;
58 char **before;
59 char **after;
60 char **wants;
61 char **wanted_by;
62 bool has_lsb;
63 bool reload;
64 bool loaded;
65} SysvStub;
66
67static SysvStub* sysvstub_free(SysvStub *s) {
68 if (!s)
69 return NULL;
70
71 free(s->name);
72 free(s->path);
73 free(s->description);
74 free(s->pid_file);
75 strv_free(s->before);
76 strv_free(s->after);
77 strv_free(s->wants);
78 strv_free(s->wanted_by);
79 return mfree(s);
80}
81DEFINE_TRIVIAL_CLEANUP_FUNC(SysvStub*, sysvstub_free);
82
83DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(
84 sysvstub_hash_ops,
85 char, string_hash_func, string_compare_func,
86 SysvStub, sysvstub_free);
87
88static int add_alias(const char *service, const char *alias) {
89 _cleanup_free_ char *link = NULL;
90
91 assert(service);
92 assert(alias);
93
94 link = path_join(arg_dest, alias);
95 if (!link)
96 return -ENOMEM;
97
98 if (symlink(service, link) < 0) {
99 if (errno == EEXIST)
100 return 0;
101
102 return -errno;
103 }
104
105 return 1;
106}
107
108static int generate_unit_file(SysvStub *s) {
109 _cleanup_free_ char *path_escaped = NULL, *unit = NULL;
110 _cleanup_fclose_ FILE *f = NULL;
111 int r;
112
113 assert(s);
114
115 if (!s->loaded)
116 return 0;
117
118 path_escaped = specifier_escape(s->path);
119 if (!path_escaped)
120 return log_oom();
121
122 unit = path_join(arg_dest, s->name);
123 if (!unit)
124 return log_oom();
125
126 /* We might already have a symlink with the same name from a Provides:,
127 * or from backup files like /etc/init.d/foo.bak. Real scripts always win,
128 * so remove an existing link */
129 if (is_symlink(unit) > 0) {
130 log_warning("Overwriting existing symlink %s with real service.", unit);
131 (void) unlink(unit);
132 }
133
134 f = fopen(unit, "wxe");
135 if (!f)
136 return log_error_errno(errno, "Failed to create unit file %s: %m", unit);
137
138 fprintf(f,
139 "# Automatically generated by systemd-sysv-generator\n\n"
140 "[Unit]\n"
141 "Documentation=man:systemd-sysv-generator(8)\n"
142 "SourcePath=%s\n",
143 path_escaped);
144
145 if (s->description) {
146 _cleanup_free_ char *t = NULL;
147
148 t = specifier_escape(s->description);
149 if (!t)
150 return log_oom();
151
152 fprintf(f, "Description=%s\n", t);
153 }
154
155 STRV_FOREACH(p, s->before)
156 fprintf(f, "Before=%s\n", *p);
157 STRV_FOREACH(p, s->after)
158 fprintf(f, "After=%s\n", *p);
159 STRV_FOREACH(p, s->wants)
160 fprintf(f, "Wants=%s\n", *p);
161
162 fprintf(f,
163 "\n[Service]\n"
164 "Type=forking\n"
165 "Restart=no\n"
166 "TimeoutSec=5min\n"
167 "IgnoreSIGPIPE=no\n"
168 "KillMode=process\n"
169 "GuessMainPID=no\n"
170 "RemainAfterExit=%s\n",
171 yes_no(!s->pid_file));
172
173 if (s->pid_file) {
174 _cleanup_free_ char *t = NULL;
175
176 t = specifier_escape(s->pid_file);
177 if (!t)
178 return log_oom();
179
180 fprintf(f, "PIDFile=%s\n", t);
181 }
182
183 /* Consider two special LSB exit codes a clean exit */
184 if (s->has_lsb)
185 fprintf(f,
186 "SuccessExitStatus=%i %i\n",
187 EXIT_NOTINSTALLED,
188 EXIT_NOTCONFIGURED);
189
190 fprintf(f,
191 "ExecStart=%s start\n"
192 "ExecStop=%s stop\n",
193 path_escaped, path_escaped);
194
195 if (s->reload)
196 fprintf(f, "ExecReload=%s reload\n", path_escaped);
197
198 r = fflush_and_check(f);
199 if (r < 0)
200 return log_error_errno(r, "Failed to write unit %s: %m", unit);
201
202 STRV_FOREACH(p, s->wanted_by)
203 (void) generator_add_symlink(arg_dest, *p, "wants", s->name);
204
205 return 1;
206}
207
208static bool usage_contains_reload(const char *line) {
209 return (strcasestr(line, "{reload|") ||
210 strcasestr(line, "{reload}") ||
211 strcasestr(line, "{reload\"") ||
212 strcasestr(line, "|reload|") ||
213 strcasestr(line, "|reload}") ||
214 strcasestr(line, "|reload\""));
215}
216
217static char *sysv_translate_name(const char *name) {
218 _cleanup_free_ char *c = NULL;
219 char *res;
220
221 c = strdup(name);
222 if (!c)
223 return NULL;
224
225 res = endswith(c, ".sh");
226 if (res)
227 *res = 0;
228
229 if (unit_name_mangle(c, 0, &res) < 0)
230 return NULL;
231
232 return res;
233}
234
235static int sysv_translate_facility(SysvStub *s, unsigned line, const char *name, char **ret) {
236
237 /* We silently ignore the $ prefix here. According to the LSB
238 * spec it simply indicates whether something is a
239 * standardized name or a distribution-specific one. Since we
240 * just follow what already exists and do not introduce new
241 * uses or names we don't care who introduced a new name. */
242
243 static const char * const table[] = {
244 /* LSB defined facilities */
245 "local_fs", NULL,
246 "network", SPECIAL_NETWORK_ONLINE_TARGET,
247 "named", SPECIAL_NSS_LOOKUP_TARGET,
248 "portmap", SPECIAL_RPCBIND_TARGET,
249 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
250 "syslog", NULL,
251 "time", SPECIAL_TIME_SYNC_TARGET,
252 };
253
254 _cleanup_free_ char *filename = NULL;
255 const char *n;
256 char *e, *m;
257 int r;
258
259 assert(name);
260 assert(s);
261 assert(ret);
262
263 r = path_extract_filename(s->path, &filename);
264 if (r < 0)
265 return log_error_errno(r, "Failed to extract file name from path '%s': %m", s->path);
266
267 n = *name == '$' ? name + 1 : name;
268
269 for (size_t i = 0; i < ELEMENTSOF(table); i += 2) {
270 if (!streq(table[i], n))
271 continue;
272
273 if (!table[i+1]) {
274 *ret = NULL;
275 return 0;
276 }
277
278 m = strdup(table[i+1]);
279 if (!m)
280 return log_oom();
281
282 *ret = m;
283 return 1;
284 }
285
286 /* If we don't know this name, fallback heuristics to figure
287 * out whether something is a target or a service alias. */
288
289 /* Facilities starting with $ are most likely targets */
290 if (*name == '$') {
291 r = unit_name_build(n, NULL, ".target", ret);
292 if (r < 0)
293 return log_error_errno(r, "[%s:%u] Could not build name for facility %s: %m", s->path, line, name);
294
295 return 1;
296 }
297
298 /* Strip ".sh" suffix from file name for comparison */
299 e = endswith(filename, ".sh");
300 if (e)
301 *e = '\0';
302
303 /* Names equaling the file name of the services are redundant */
304 if (streq_ptr(n, filename)) {
305 *ret = NULL;
306 return 0;
307 }
308
309 /* Everything else we assume to be normal service names */
310 m = sysv_translate_name(n);
311 if (!m)
312 return log_oom();
313
314 *ret = m;
315 return 1;
316}
317
318static int handle_provides(SysvStub *s, unsigned line, const char *full_text, const char *text) {
319 int r;
320
321 assert(s);
322 assert(full_text);
323 assert(text);
324
325 for (;;) {
326 _cleanup_free_ char *word = NULL, *m = NULL;
327
328 r = extract_first_word(&text, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_RELAX);
329 if (r < 0)
330 return log_error_errno(r, "[%s:%u] Failed to parse word from provides string: %m", s->path, line);
331 if (r == 0)
332 break;
333
334 r = sysv_translate_facility(s, line, word, &m);
335 if (r <= 0) /* continue on error */
336 continue;
337
338 switch (unit_name_to_type(m)) {
339
340 case UNIT_SERVICE:
341 log_debug("Adding Provides: alias '%s' for '%s'", m, s->name);
342 r = add_alias(s->name, m);
343 if (r < 0)
344 log_warning_errno(r, "[%s:%u] Failed to add LSB Provides name %s, ignoring: %m", s->path, line, m);
345 break;
346
347 case UNIT_TARGET:
348
349 /* NB: SysV targets which are provided by a
350 * service are pulled in by the services, as
351 * an indication that the generic service is
352 * now available. This is strictly one-way.
353 * The targets do NOT pull in SysV services! */
354
355 r = strv_extend(&s->before, m);
356 if (r < 0)
357 return log_oom();
358
359 r = strv_extend(&s->wants, m);
360 if (r < 0)
361 return log_oom();
362
363 if (streq(m, SPECIAL_NETWORK_ONLINE_TARGET)) {
364 r = strv_extend(&s->before, SPECIAL_NETWORK_TARGET);
365 if (r < 0)
366 return log_oom();
367 r = strv_extend(&s->wants, SPECIAL_NETWORK_TARGET);
368 if (r < 0)
369 return log_oom();
370 }
371
372 break;
373
374 case _UNIT_TYPE_INVALID:
375 log_warning("Unit name '%s' is invalid", m);
376 break;
377
378 default:
379 log_warning("Unknown unit type for unit '%s'", m);
380 }
381 }
382
383 return 0;
384}
385
386static int handle_dependencies(SysvStub *s, unsigned line, const char *full_text, const char *text) {
387 int r;
388
389 assert(s);
390 assert(full_text);
391 assert(text);
392
393 for (;;) {
394 _cleanup_free_ char *word = NULL, *m = NULL;
395 bool is_before;
396
397 r = extract_first_word(&text, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_RELAX);
398 if (r < 0)
399 return log_error_errno(r, "[%s:%u] Failed to parse word from provides string: %m", s->path, line);
400 if (r == 0)
401 break;
402
403 r = sysv_translate_facility(s, line, word, &m);
404 if (r <= 0) /* continue on error */
405 continue;
406
407 is_before = startswith_no_case(full_text, "X-Start-Before:");
408
409 if (streq(m, SPECIAL_NETWORK_ONLINE_TARGET) && !is_before) {
410 /* the network-online target is special, as it needs to be actively pulled in */
411 r = strv_extend(&s->after, m);
412 if (r < 0)
413 return log_oom();
414
415 r = strv_extend(&s->wants, m);
416 } else
417 r = strv_extend(is_before ? &s->before : &s->after, m);
418 if (r < 0)
419 return log_oom();
420 }
421
422 return 0;
423}
424
425static int load_sysv(SysvStub *s) {
426 _cleanup_fclose_ FILE *f = NULL;
427 unsigned line = 0;
428 int r;
429 enum {
430 NORMAL,
431 DESCRIPTION,
432 LSB,
433 LSB_DESCRIPTION,
434 USAGE_CONTINUATION
435 } state = NORMAL;
436 _cleanup_free_ char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL;
437 char *description;
438 bool supports_reload = false;
439
440 assert(s);
441
442 f = fopen(s->path, "re");
443 if (!f) {
444 if (errno == ENOENT)
445 return 0;
446
447 return log_error_errno(errno, "Failed to open %s: %m", s->path);
448 }
449
450 log_debug("Loading SysV script %s", s->path);
451
452 for (;;) {
453 _cleanup_free_ char *l = NULL;
454
455 r = read_stripped_line(f, LONG_LINE_MAX, &l);
456 if (r < 0)
457 return log_error_errno(r, "Failed to read configuration file '%s': %m", s->path);
458 if (r == 0)
459 break;
460
461 line++;
462
463 if (l[0] != '#') {
464 /* Try to figure out whether this init script supports
465 * the reload operation. This heuristic looks for
466 * "Usage" lines which include the reload option. */
467 if (state == USAGE_CONTINUATION ||
468 (state == NORMAL && strcasestr(l, "usage"))) {
469 if (usage_contains_reload(l)) {
470 supports_reload = true;
471 state = NORMAL;
472 } else if (endswith(l, "\\"))
473 state = USAGE_CONTINUATION;
474 else
475 state = NORMAL;
476 }
477
478 continue;
479 }
480
481 if (state == NORMAL && streq(l, "### BEGIN INIT INFO")) {
482 state = LSB;
483 s->has_lsb = true;
484 continue;
485 }
486
487 if (IN_SET(state, LSB_DESCRIPTION, LSB) && streq(l, "### END INIT INFO")) {
488 state = NORMAL;
489 continue;
490 }
491
492 char *t = l + 1;
493 t += strspn(t, WHITESPACE);
494
495 if (state == NORMAL) {
496
497 /* Try to parse Red Hat style description */
498
499 if (startswith_no_case(t, "description:")) {
500
501 size_t k;
502 const char *j;
503
504 k = strlen(t);
505 if (k > 0 && t[k-1] == '\\') {
506 state = DESCRIPTION;
507 t[k-1] = 0;
508 }
509
510 j = empty_to_null(strstrip(t+12));
511
512 r = free_and_strdup(&chkconfig_description, j);
513 if (r < 0)
514 return log_oom();
515
516 } else if (startswith_no_case(t, "pidfile:")) {
517 const char *fn;
518
519 state = NORMAL;
520
521 fn = strstrip(t+8);
522 if (!path_is_absolute(fn)) {
523 log_error("[%s:%u] PID file not absolute. Ignoring.", s->path, line);
524 continue;
525 }
526
527 r = free_and_strdup(&s->pid_file, fn);
528 if (r < 0)
529 return log_oom();
530 }
531
532 } else if (state == DESCRIPTION) {
533
534 /* Try to parse Red Hat style description
535 * continuation */
536
537 size_t k;
538 const char *j;
539
540 k = strlen(t);
541 if (k > 0 && t[k-1] == '\\')
542 t[k-1] = 0;
543 else
544 state = NORMAL;
545
546 j = strstrip(t);
547 if (!isempty(j) && !strextend_with_separator(&chkconfig_description, " ", j))
548 return log_oom();
549
550 } else if (IN_SET(state, LSB, LSB_DESCRIPTION)) {
551
552 if (startswith_no_case(t, "Provides:")) {
553 state = LSB;
554
555 r = handle_provides(s, line, t, t + 9);
556 if (r < 0)
557 return r;
558
559 } else if (startswith_no_case(t, "Required-Start:") ||
560 startswith_no_case(t, "Should-Start:") ||
561 startswith_no_case(t, "X-Start-Before:") ||
562 startswith_no_case(t, "X-Start-After:")) {
563
564 state = LSB;
565
566 r = handle_dependencies(s, line, t, strchr(t, ':') + 1);
567 if (r < 0)
568 return r;
569
570 } else if (startswith_no_case(t, "Description:")) {
571 const char *j;
572
573 state = LSB_DESCRIPTION;
574
575 j = empty_to_null(strstrip(t+12));
576
577 r = free_and_strdup(&long_description, j);
578 if (r < 0)
579 return log_oom();
580
581 } else if (startswith_no_case(t, "Short-Description:")) {
582 const char *j;
583
584 state = LSB;
585
586 j = empty_to_null(strstrip(t+18));
587
588 r = free_and_strdup(&short_description, j);
589 if (r < 0)
590 return log_oom();
591
592 } else if (state == LSB_DESCRIPTION) {
593
594 if (startswith(l, "#\t") || startswith(l, "# ")) {
595 const char *j;
596
597 j = strstrip(t);
598 if (!isempty(j) && !strextend_with_separator(&long_description, " ", j))
599 return log_oom();
600 } else
601 state = LSB;
602 }
603 }
604 }
605
606 s->reload = supports_reload;
607
608 /* We use the long description only if
609 * no short description is set. */
610
611 if (short_description)
612 description = short_description;
613 else if (chkconfig_description)
614 description = chkconfig_description;
615 else if (long_description)
616 description = long_description;
617 else
618 description = NULL;
619
620 if (description) {
621 char *d;
622
623 d = strjoin(s->has_lsb ? "LSB: " : "SYSV: ", description);
624 if (!d)
625 return log_oom();
626
627 s->description = d;
628 }
629
630 s->loaded = true;
631 return 0;
632}
633
634static int fix_order(SysvStub *s, Hashmap *all_services) {
635 SysvStub *other;
636 int r;
637
638 assert(s);
639
640 if (!s->loaded)
641 return 0;
642
643 if (s->sysv_start_priority < 0)
644 return 0;
645
646 HASHMAP_FOREACH(other, all_services) {
647 if (s == other)
648 continue;
649
650 if (!other->loaded)
651 continue;
652
653 if (other->sysv_start_priority < 0)
654 continue;
655
656 /* If both units have modern headers we don't care
657 * about the priorities */
658 if (s->has_lsb && other->has_lsb)
659 continue;
660
661 if (other->sysv_start_priority < s->sysv_start_priority) {
662 r = strv_extend(&s->after, other->name);
663 if (r < 0)
664 return log_oom();
665
666 } else if (other->sysv_start_priority > s->sysv_start_priority) {
667 r = strv_extend(&s->before, other->name);
668 if (r < 0)
669 return log_oom();
670 } else
671 continue;
672
673 /* FIXME: Maybe we should compare the name here lexicographically? */
674 }
675
676 return 0;
677}
678
679static int acquire_search_path(const char *def, const char *envvar, char ***ret) {
680 _cleanup_strv_free_ char **l = NULL;
681 const char *e;
682 int r;
683
684 assert(def);
685 assert(envvar);
686
687 e = getenv(envvar);
688 if (e) {
689 r = path_split_and_make_absolute(e, &l);
690 if (r < 0)
691 return log_error_errno(r, "Failed to make $%s search path absolute: %m", envvar);
692 }
693
694 if (strv_isempty(l)) {
695 strv_free(l);
696
697 l = strv_new(def);
698 if (!l)
699 return log_oom();
700 }
701
702 if (!path_strv_resolve_uniq(l, NULL))
703 return log_oom();
704
705 *ret = TAKE_PTR(l);
706
707 return 0;
708}
709
710static int enumerate_sysv(const LookupPaths *lp, Hashmap *all_services) {
711 _cleanup_strv_free_ char **sysvinit_path = NULL;
712 int r;
713
714 assert(lp);
715
716 r = acquire_search_path(SYSTEM_SYSVINIT_PATH, "SYSTEMD_SYSVINIT_PATH", &sysvinit_path);
717 if (r < 0)
718 return r;
719
720 STRV_FOREACH(path, sysvinit_path) {
721 _cleanup_closedir_ DIR *d = NULL;
722
723 d = opendir(*path);
724 if (!d) {
725 if (errno != ENOENT)
726 log_warning_errno(errno, "Opening %s failed, ignoring: %m", *path);
727 continue;
728 }
729
730 FOREACH_DIRENT(de, d, log_error_errno(errno, "Failed to enumerate directory %s, ignoring: %m", *path)) {
731 _cleanup_free_ char *fpath = NULL, *name = NULL;
732 _cleanup_(sysvstub_freep) SysvStub *service = NULL;
733 struct stat st;
734
735 if (fstatat(dirfd(d), de->d_name, &st, 0) < 0) {
736 log_warning_errno(errno, "stat() failed on %s/%s, ignoring: %m", *path, de->d_name);
737 continue;
738 }
739
740 if (!(st.st_mode & S_IXUSR))
741 continue;
742
743 if (!S_ISREG(st.st_mode))
744 continue;
745
746 name = sysv_translate_name(de->d_name);
747 if (!name)
748 return log_oom();
749
750 if (hashmap_contains(all_services, name))
751 continue;
752
753 r = unit_file_exists(RUNTIME_SCOPE_SYSTEM, lp, name);
754 if (r < 0 && !IN_SET(r, -ELOOP, -ERFKILL, -EADDRNOTAVAIL)) {
755 log_debug_errno(r, "Failed to detect whether %s exists, skipping: %m", name);
756 continue;
757 } else if (r != 0) {
758 log_debug("Native unit for %s already exists, skipping.", name);
759 continue;
760 }
761
762 fpath = path_join(*path, de->d_name);
763 if (!fpath)
764 return log_oom();
765
766 log_struct(LOG_WARNING,
767 LOG_MESSAGE("SysV service '%s' lacks a native systemd unit file, "
768 "automatically generating a unit file for compatibility.\n"
769 "Please update package to include a native systemd unit file.\n"
770 "%s This compatibility logic is deprecated, expect removal soon. %s",
771 fpath,
772 glyph(GLYPH_WARNING_SIGN),
773 glyph(GLYPH_WARNING_SIGN)),
774 LOG_MESSAGE_ID(SD_MESSAGE_SYSV_GENERATOR_DEPRECATED_STR),
775 LOG_ITEM("SYSVSCRIPT=%s", fpath),
776 LOG_ITEM("UNIT=%s", name));
777
778 service = new(SysvStub, 1);
779 if (!service)
780 return log_oom();
781
782 *service = (SysvStub) {
783 .sysv_start_priority = -1,
784 .name = TAKE_PTR(name),
785 .path = TAKE_PTR(fpath),
786 };
787
788 r = hashmap_put(all_services, service->name, service);
789 if (r < 0)
790 return log_oom();
791
792 TAKE_PTR(service);
793 }
794 }
795
796 return 0;
797}
798
799static int set_dependencies_from_rcnd(const LookupPaths *lp, Hashmap *all_services) {
800 Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
801 _cleanup_strv_free_ char **sysvrcnd_path = NULL;
802 SysvStub *service;
803 int r;
804
805 assert(lp);
806
807 r = acquire_search_path(SYSTEM_SYSVRCND_PATH, "SYSTEMD_SYSVRCND_PATH", &sysvrcnd_path);
808 if (r < 0)
809 return r;
810
811 STRV_FOREACH(p, sysvrcnd_path)
812 for (unsigned i = 0; i < ELEMENTSOF(rcnd_table); i++) {
813 _cleanup_closedir_ DIR *d = NULL;
814 _cleanup_free_ char *path = NULL;
815
816 path = path_join(*p, rcnd_table[i].path);
817 if (!path) {
818 r = log_oom();
819 goto finish;
820 }
821
822 d = opendir(path);
823 if (!d) {
824 if (errno != ENOENT)
825 log_warning_errno(errno, "Opening %s failed, ignoring: %m", path);
826
827 continue;
828 }
829
830 FOREACH_DIRENT(de, d, log_warning_errno(errno, "Failed to enumerate directory %s, ignoring: %m", path)) {
831 _cleanup_free_ char *name = NULL, *fpath = NULL;
832 int a, b;
833
834 if (de->d_name[0] != 'S')
835 continue;
836
837 if (strlen(de->d_name) < 4)
838 continue;
839
840 a = undecchar(de->d_name[1]);
841 b = undecchar(de->d_name[2]);
842
843 if (a < 0 || b < 0)
844 continue;
845
846 fpath = path_join(*p, de->d_name);
847 if (!fpath) {
848 r = log_oom();
849 goto finish;
850 }
851
852 name = sysv_translate_name(de->d_name + 3);
853 if (!name) {
854 r = log_oom();
855 goto finish;
856 }
857
858 service = hashmap_get(all_services, name);
859 if (!service) {
860 log_debug("Ignoring %s symlink in %s, not generating %s.", de->d_name, rcnd_table[i].path, name);
861 continue;
862 }
863
864 service->sysv_start_priority = MAX(a*10 + b, service->sysv_start_priority);
865
866 r = set_ensure_put(&runlevel_services[i], NULL, service);
867 if (r < 0) {
868 log_oom();
869 goto finish;
870 }
871 }
872 }
873
874 for (unsigned i = 0; i < ELEMENTSOF(rcnd_table); i++)
875 SET_FOREACH(service, runlevel_services[i]) {
876 r = strv_extend(&service->before, rcnd_table[i].target);
877 if (r < 0) {
878 log_oom();
879 goto finish;
880 }
881 r = strv_extend(&service->wanted_by, rcnd_table[i].target);
882 if (r < 0) {
883 log_oom();
884 goto finish;
885 }
886 }
887
888 r = 0;
889
890finish:
891 for (unsigned i = 0; i < ELEMENTSOF(rcnd_table); i++)
892 set_free(runlevel_services[i]);
893
894 return r;
895}
896
897static int run(const char *dest, const char *dest_early, const char *dest_late) {
898 _cleanup_hashmap_free_ Hashmap *all_services = NULL;
899 _cleanup_(lookup_paths_done) LookupPaths lp = {};
900 SysvStub *service;
901 int r;
902
903 if (in_initrd()) {
904 log_debug("Skipping generator, running in the initrd.");
905 return EXIT_SUCCESS;
906 }
907
908 assert_se(arg_dest = dest_late);
909
910 r = lookup_paths_init_or_warn(&lp, RUNTIME_SCOPE_SYSTEM, LOOKUP_PATHS_EXCLUDE_GENERATED, NULL);
911 if (r < 0)
912 return r;
913
914 all_services = hashmap_new(&sysvstub_hash_ops);
915 if (!all_services)
916 return log_oom();
917
918 r = enumerate_sysv(&lp, all_services);
919 if (r < 0)
920 return r;
921
922 r = set_dependencies_from_rcnd(&lp, all_services);
923 if (r < 0)
924 return r;
925
926 HASHMAP_FOREACH(service, all_services)
927 (void) load_sysv(service);
928
929 HASHMAP_FOREACH(service, all_services) {
930 (void) fix_order(service, all_services);
931 (void) generate_unit_file(service);
932 }
933
934 return 0;
935}
936
937DEFINE_MAIN_GENERATOR_FUNCTION(run);
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