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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 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 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <string.h> | |
23 | #include <unistd.h> | |
24 | ||
25 | #include "util.h" | |
26 | #include "special.h" | |
27 | #include "mkdir.h" | |
28 | #include "unit-name.h" | |
29 | #include "generator.h" | |
30 | #include "path-util.h" | |
e842803a | 31 | #include "dropin.h" |
60f067b4 JS |
32 | |
33 | int generator_write_fsck_deps( | |
34 | FILE *f, | |
35 | const char *dest, | |
36 | const char *what, | |
37 | const char *where, | |
38 | const char *fstype) { | |
39 | ||
40 | assert(f); | |
41 | assert(dest); | |
42 | assert(what); | |
43 | assert(where); | |
44 | ||
45 | if (!is_device_path(what)) { | |
46 | log_warning("Checking was requested for \"%s\", but it is not a device.", what); | |
47 | return 0; | |
48 | } | |
49 | ||
50 | if (!isempty(fstype) && !streq(fstype, "auto")) { | |
51 | int r; | |
52 | r = fsck_exists(fstype); | |
e842803a | 53 | if (r == -ENOENT) { |
60f067b4 | 54 | /* treat missing check as essentially OK */ |
e842803a MB |
55 | log_debug("Checking was requested for %s, but fsck.%s does not exist: %s", what, fstype, strerror(-r)); |
56 | return 0; | |
57 | } else if (r < 0) { | |
58 | log_warning("Checking was requested for %s, but fsck.%s cannot be used: %s", what, fstype, strerror(-r)); | |
59 | return r; | |
60f067b4 JS |
60 | } |
61 | } | |
62 | ||
63 | if (streq(where, "/")) { | |
64 | char *lnk; | |
65 | ||
66 | lnk = strappenda(dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service"); | |
67 | ||
68 | mkdir_parents(lnk, 0755); | |
69 | if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0) { | |
70 | log_error("Failed to create symlink %s: %m", lnk); | |
71 | return -errno; | |
72 | } | |
73 | ||
74 | } else { | |
75 | _cleanup_free_ char *fsck = NULL; | |
76 | ||
77 | fsck = unit_name_from_path_instance("systemd-fsck", what, ".service"); | |
78 | if (!fsck) | |
79 | return log_oom(); | |
80 | ||
81 | fprintf(f, | |
82 | "RequiresOverridable=%s\n" | |
83 | "After=%s\n", | |
84 | fsck, | |
85 | fsck); | |
86 | } | |
87 | ||
88 | return 0; | |
89 | } | |
e842803a MB |
90 | |
91 | int generator_write_timeouts(const char *dir, const char *what, const char *where, | |
92 | const char *opts, char **filtered) { | |
93 | ||
94 | /* Allow configuration how long we wait for a device that | |
95 | * backs a mount point to show up. This is useful to support | |
96 | * endless device timeouts for devices that show up only after | |
97 | * user input, like crypto devices. */ | |
98 | ||
99 | _cleanup_free_ char *node = NULL, *unit = NULL, *t = NULL; | |
100 | char *start, *timeout; | |
101 | usec_t u; | |
102 | int r; | |
103 | size_t len; | |
104 | ||
105 | if ((start = mount_test_option(opts, "comment=systemd.device-timeout"))) | |
106 | timeout = start + 31; | |
107 | else if ((start = mount_test_option(opts, "x-systemd.device-timeout"))) | |
108 | timeout = start + 25; | |
109 | else { | |
110 | if (filtered) { | |
111 | *filtered = strdup(opts ?: ""); | |
112 | if (!*filtered) | |
113 | return log_oom(); | |
114 | } | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | len = strcspn(timeout, ",;" WHITESPACE); | |
120 | t = strndup(timeout, len); | |
121 | if (!t) | |
122 | return -ENOMEM; | |
123 | ||
124 | if (filtered) { | |
125 | char *prefix, *postfix; | |
126 | ||
127 | prefix = strndupa(opts, start - opts - (start != opts)); | |
5eef597e | 128 | postfix = timeout + len + (start == opts && timeout[len] != '\0'); |
e842803a MB |
129 | *filtered = strjoin(prefix, *postfix ? postfix : NULL, NULL); |
130 | if (!*filtered) | |
131 | return log_oom(); | |
132 | } | |
133 | ||
134 | r = parse_sec(t, &u); | |
135 | if (r < 0) { | |
136 | log_warning("Failed to parse timeout for %s, ignoring: %s", | |
137 | where, timeout); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | node = fstab_node_to_udev_node(what); | |
142 | if (!node) | |
143 | return log_oom(); | |
144 | ||
145 | unit = unit_name_from_path(node, ".device"); | |
146 | if (!unit) | |
147 | return -ENOMEM; | |
148 | ||
149 | return write_drop_in_format(dir, unit, 50, "device-timeout", | |
150 | "# Automatically generated by %s\n\n" | |
5eef597e | 151 | "[Unit]\nJobTimeoutSec=" USEC_FMT, |
e842803a MB |
152 | program_invocation_short_name, |
153 | u / USEC_PER_SEC); | |
154 | } |