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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
a7334b09 | 2 | |
cf0fbc49 | 3 | #include "conf-parser.h" |
317cd27a | 4 | #include "fs-util.h" |
5cb5a6ff | 5 | #include "load-dropin.h" |
cf0fbc49 | 6 | #include "load-fragment.h" |
b952f2e1 | 7 | #include "log.h" |
95778782 | 8 | #include "stat-util.h" |
317cd27a | 9 | #include "string-util.h" |
036643a2 | 10 | #include "strv.h" |
9e2f7c11 | 11 | #include "unit-name.h" |
cf0fbc49 | 12 | #include "unit.h" |
8afbb8e1 | 13 | |
95778782 ZJS |
14 | static int process_deps(Unit *u, UnitDependency dependency, const char *dir_suffix) { |
15 | _cleanup_strv_free_ char **paths = NULL; | |
16 | char **p; | |
9e2f7c11 LP |
17 | int r; |
18 | ||
95778782 ZJS |
19 | r = unit_file_find_dropin_paths(NULL, |
20 | u->manager->lookup_paths.search_path, | |
21 | u->manager->unit_path_cache, | |
4562c355 ZJS |
22 | dir_suffix, NULL, |
23 | u->id, u->aliases, | |
95778782 | 24 | &paths); |
1a7f1b38 | 25 | if (r < 0) |
95778782 ZJS |
26 | return r; |
27 | ||
28 | STRV_FOREACH(p, paths) { | |
317cd27a | 29 | _cleanup_free_ char *target = NULL; |
b119facd | 30 | const char *entry; |
95778782 ZJS |
31 | |
32 | entry = basename(*p); | |
33 | ||
5be5d39b ZJS |
34 | if (null_or_empty_path(*p) > 0) { |
35 | /* an error usually means an invalid symlink, which is not a mask */ | |
36 | log_unit_debug(u, "%s dependency on %s is masked by %s, ignoring.", | |
37 | unit_dependency_to_string(dependency), entry, *p); | |
38 | continue; | |
39 | } | |
40 | ||
95778782 ZJS |
41 | r = is_symlink(*p); |
42 | if (r < 0) { | |
43 | log_unit_warning_errno(u, r, "%s dropin %s unreadable, ignoring: %m", | |
44 | unit_dependency_to_string(dependency), *p); | |
45 | continue; | |
46 | } | |
47 | if (r == 0) { | |
48 | log_unit_warning(u, "%s dependency dropin %s is not a symlink, ignoring.", | |
49 | unit_dependency_to_string(dependency), *p); | |
50 | continue; | |
51 | } | |
52 | ||
317cd27a ZJS |
53 | if (!unit_name_is_valid(entry, UNIT_NAME_ANY)) { |
54 | log_unit_warning(u, "%s dependency dropin %s is not a valid unit name, ignoring.", | |
55 | unit_dependency_to_string(dependency), *p); | |
56 | continue; | |
57 | } | |
58 | ||
59 | r = readlink_malloc(*p, &target); | |
60 | if (r < 0) { | |
61 | log_unit_warning_errno(u, r, "readlink(\"%s\") failed, ignoring: %m", *p); | |
62 | continue; | |
63 | } | |
64 | ||
65 | /* We don't treat this as an error, especially because we didn't check this for a | |
66 | * long time. Nevertheless, we warn, because such mismatch can be mighty confusing. */ | |
1bf15585 | 67 | r = unit_symlink_name_compatible(entry, basename(target), u->instance); |
45f4238a | 68 | if (r < 0) { |
9a4f9e69 ZJS |
69 | log_unit_warning_errno(u, r, "Can't check if names %s and %s are compatible, ignoring: %m", |
70 | entry, basename(target)); | |
45f4238a LP |
71 | continue; |
72 | } | |
73 | if (r == 0) | |
317cd27a ZJS |
74 | log_unit_warning(u, "%s dependency dropin %s target %s has different name", |
75 | unit_dependency_to_string(dependency), *p, target); | |
95778782 | 76 | |
35d8c19a | 77 | r = unit_add_dependency_by_name(u, dependency, entry, true, UNIT_DEPENDENCY_FILE); |
95778782 | 78 | if (r < 0) |
800f478c LP |
79 | log_unit_warning_errno(u, r, "Cannot add %s dependency on %s, ignoring: %m", |
80 | unit_dependency_to_string(dependency), entry); | |
95778782 | 81 | } |
9e2f7c11 | 82 | |
8afbb8e1 | 83 | return 0; |
9e2f7c11 | 84 | } |
5cb5a6ff | 85 | |
ae7a7182 | 86 | int unit_load_dropin(Unit *u) { |
d7e0da1d | 87 | _cleanup_strv_free_ char **l = NULL; |
95778782 | 88 | char **f; |
1a7f1b38 | 89 | int r; |
99f08d14 LP |
90 | |
91 | assert(u); | |
92 | ||
95778782 ZJS |
93 | /* Load dependencies from .wants and .requires directories */ |
94 | r = process_deps(u, UNIT_WANTS, ".wants"); | |
95 | if (r < 0) | |
96 | return r; | |
99f08d14 | 97 | |
95778782 ZJS |
98 | r = process_deps(u, UNIT_REQUIRES, ".requires"); |
99 | if (r < 0) | |
100 | return r; | |
0301abf4 | 101 | |
95778782 | 102 | /* Load .conf dropins */ |
d7e0da1d | 103 | r = unit_find_dropin_paths(u, &l); |
1a7f1b38 | 104 | if (r <= 0) |
ae7a7182 | 105 | return 0; |
5926ccca | 106 | |
1cc6c93a YW |
107 | if (!u->dropin_paths) |
108 | u->dropin_paths = TAKE_PTR(l); | |
109 | else { | |
d7e0da1d LP |
110 | r = strv_extend_strv(&u->dropin_paths, l, true); |
111 | if (r < 0) | |
112 | return log_oom(); | |
113 | } | |
114 | ||
bcde742e | 115 | STRV_FOREACH(f, u->dropin_paths) |
4f9ff96a LP |
116 | (void) config_parse( |
117 | u->id, *f, NULL, | |
118 | UNIT_VTABLE(u)->sections, | |
119 | config_item_perf_lookup, load_fragment_gperf_lookup, | |
120 | 0, | |
121 | u, | |
122 | &u->dropin_mtime); | |
ae7a7182 | 123 | |
5cb5a6ff LP |
124 | return 0; |
125 | } |