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1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
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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
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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"
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29#include "unit-name.h"
30
31static 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);
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56 free(f);
57
58 if (r < 0)
59 goto finish;
60 }
61
62 r = 0;
63
64finish:
65 closedir(d);
66 return r;
67}
5cb5a6ff 68
87f0e418 69int unit_load_dropin(Unit *u) {
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70 Iterator i;
71 int r;
72 char *t;
73
87f0e418 74 assert(u);
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75
76 /* Load dependencies from supplementary drop-in directories */
77
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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
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84 if (asprintf(&path, "%s/%s.wants", *p, t) < 0)
85 return -ENOMEM;
0301abf4 86
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87 r = iterate_dir(u, path);
88 free(path);
0301abf4 89
9e2f7c11 90 if (r < 0)
036643a2 91 return r;
0301abf4 92
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93 if (u->meta.instance) {
94 char *template;
95 /* Also try the template dir */
0301abf4 96
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97 if (!(template = unit_name_template(t)))
98 return -ENOMEM;
0301abf4 99
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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);
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107 free(path);
108
9e2f7c11 109 if (r < 0)
036643a2 110 return r;
0301abf4 111 }
0301abf4 112
036643a2 113 }
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114 }
115
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116 return 0;
117}