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5cb5a6ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
2 | ||
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 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 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
0301abf4 LP |
22 | #include <dirent.h> |
23 | #include <errno.h> | |
24 | ||
25 | #include "unit.h" | |
5cb5a6ff | 26 | #include "load-dropin.h" |
b952f2e1 | 27 | #include "log.h" |
036643a2 | 28 | #include "strv.h" |
9e2f7c11 LP |
29 | #include "unit-name.h" |
30 | ||
31 | static int iterate_dir(Unit *u, const char *path) { | |
32 | DIR *d; | |
33 | struct dirent *de; | |
34 | int r; | |
35 | ||
36 | if (!(d = opendir(path))) { | |
37 | ||
38 | if (errno == ENOENT) | |
39 | return 0; | |
40 | ||
41 | return -errno; | |
42 | } | |
43 | ||
44 | while ((de = readdir(d))) { | |
45 | char *f; | |
46 | ||
47 | if (ignore_file(de->d_name)) | |
48 | continue; | |
49 | ||
50 | if (asprintf(&f, "%s/%s", path, de->d_name) < 0) { | |
51 | r = -ENOMEM; | |
52 | goto finish; | |
53 | } | |
54 | ||
701cc384 | 55 | r = unit_add_dependency_by_name(u, UNIT_WANTS, de->d_name, f, true); |
9e2f7c11 LP |
56 | free(f); |
57 | ||
58 | if (r < 0) | |
59 | goto finish; | |
60 | } | |
61 | ||
62 | r = 0; | |
63 | ||
64 | finish: | |
65 | closedir(d); | |
66 | return r; | |
67 | } | |
5cb5a6ff | 68 | |
87f0e418 | 69 | int unit_load_dropin(Unit *u) { |
0301abf4 LP |
70 | Iterator i; |
71 | int r; | |
72 | char *t; | |
73 | ||
87f0e418 | 74 | assert(u); |
5cb5a6ff LP |
75 | |
76 | /* Load dependencies from supplementary drop-in directories */ | |
77 | ||
0301abf4 LP |
78 | SET_FOREACH(t, u->meta.names, i) { |
79 | char *path; | |
036643a2 | 80 | char **p; |
0301abf4 | 81 | |
036643a2 | 82 | STRV_FOREACH(p, u->meta.manager->unit_path) { |
0301abf4 | 83 | |
036643a2 LP |
84 | if (asprintf(&path, "%s/%s.wants", *p, t) < 0) |
85 | return -ENOMEM; | |
0301abf4 | 86 | |
9e2f7c11 LP |
87 | r = iterate_dir(u, path); |
88 | free(path); | |
0301abf4 | 89 | |
9e2f7c11 | 90 | if (r < 0) |
036643a2 | 91 | return r; |
0301abf4 | 92 | |
9e2f7c11 LP |
93 | if (u->meta.instance) { |
94 | char *template; | |
95 | /* Also try the template dir */ | |
0301abf4 | 96 | |
9e2f7c11 LP |
97 | if (!(template = unit_name_template(t))) |
98 | return -ENOMEM; | |
0301abf4 | 99 | |
9e2f7c11 LP |
100 | r = asprintf(&path, "%s/%s.wants", *p, template); |
101 | free(template); | |
0301abf4 | 102 | |
9e2f7c11 | 103 | if (r < 0) |
036643a2 | 104 | return -ENOMEM; |
0301abf4 | 105 | |
9e2f7c11 | 106 | r = iterate_dir(u, path); |
036643a2 LP |
107 | free(path); |
108 | ||
9e2f7c11 | 109 | if (r < 0) |
036643a2 | 110 | return r; |
0301abf4 | 111 | } |
0301abf4 | 112 | |
036643a2 | 113 | } |
0301abf4 LP |
114 | } |
115 | ||
5cb5a6ff LP |
116 | return 0; |
117 | } |