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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 <unistd.h> | |
23 | ||
24 | #include "util.h" | |
25 | #include "special.h" | |
26 | #include "mkdir.h" | |
27 | #include "unit-name.h" | |
28 | #include "generator.h" | |
eb66db55 | 29 | #include "path-util.h" |
d15d0333 | 30 | #include "fstab-util.h" |
4dda4e63 | 31 | #include "fileio.h" |
29686440 | 32 | #include "dropin.h" |
e48fdd84 | 33 | |
4dda4e63 ZJS |
34 | static int write_fsck_sysroot_service(const char *dir, const char *what) { |
35 | const char *unit; | |
36 | _cleanup_free_ char *device = NULL; | |
fa05e972 | 37 | _cleanup_free_ char *escaped; |
4dda4e63 ZJS |
38 | _cleanup_fclose_ FILE *f = NULL; |
39 | int r; | |
40 | ||
fa05e972 AB |
41 | escaped = cescape(what); |
42 | if (!escaped) | |
43 | return log_oom(); | |
44 | ||
4dda4e63 ZJS |
45 | unit = strjoina(dir, "/systemd-fsck-root.service"); |
46 | log_debug("Creating %s", unit); | |
47 | ||
48 | r = unit_name_from_path(what, ".device", &device); | |
49 | if (r < 0) | |
50 | return log_error_errno(r, "Failed to convert device \"%s\" to unit name: %m", what); | |
51 | ||
52 | f = fopen(unit, "wxe"); | |
53 | if (!f) | |
54 | return log_error_errno(errno, "Failed to create unit file %s: %m", unit); | |
55 | ||
56 | fprintf(f, | |
57 | "# Automatically generated by %1$s\n\n" | |
58 | "[Unit]\n" | |
59 | "Documentation=man:systemd-fsck-root.service(8)\n" | |
60 | "Description=File System Check on %2$s\n" | |
61 | "DefaultDependencies=no\n" | |
62 | "BindsTo=%3$s\n" | |
63 | "After=%3$s\n" | |
64 | "Before=shutdown.target\n" | |
65 | "\n" | |
66 | "[Service]\n" | |
67 | "Type=oneshot\n" | |
68 | "RemainAfterExit=yes\n" | |
fa05e972 | 69 | "ExecStart=" SYSTEMD_FSCK_PATH " %4$s\n" |
4dda4e63 ZJS |
70 | "TimeoutSec=0\n", |
71 | program_invocation_short_name, | |
72 | what, | |
fa05e972 AB |
73 | device, |
74 | escaped); | |
4dda4e63 | 75 | |
2929b4a6 LP |
76 | r = fflush_and_check(f); |
77 | if (r < 0) | |
78 | return log_error_errno(r, "Failed to write unit file %s: %m", unit); | |
4dda4e63 ZJS |
79 | |
80 | return 0; | |
81 | } | |
82 | ||
e48fdd84 LP |
83 | int generator_write_fsck_deps( |
84 | FILE *f, | |
2e852276 | 85 | const char *dir, |
e48fdd84 LP |
86 | const char *what, |
87 | const char *where, | |
6db615c1 | 88 | const char *fstype) { |
e48fdd84 | 89 | |
7410616c LP |
90 | int r; |
91 | ||
e48fdd84 | 92 | assert(f); |
2e852276 | 93 | assert(dir); |
6db615c1 LP |
94 | assert(what); |
95 | assert(where); | |
e48fdd84 LP |
96 | |
97 | if (!is_device_path(what)) { | |
98 | log_warning("Checking was requested for \"%s\", but it is not a device.", what); | |
99 | return 0; | |
100 | } | |
101 | ||
6db615c1 | 102 | if (!isempty(fstype) && !streq(fstype, "auto")) { |
eb66db55 | 103 | r = fsck_exists(fstype); |
571d0134 | 104 | if (r == -ENOENT) { |
e48fdd84 | 105 | /* treat missing check as essentially OK */ |
da927ba9 | 106 | log_debug_errno(r, "Checking was requested for %s, but fsck.%s does not exist: %m", what, fstype); |
571d0134 | 107 | return 0; |
f647962d MS |
108 | } else if (r < 0) |
109 | return log_warning_errno(r, "Checking was requested for %s, but fsck.%s cannot be used: %m", what, fstype); | |
e48fdd84 LP |
110 | } |
111 | ||
2e852276 | 112 | if (path_equal(where, "/")) { |
e48fdd84 LP |
113 | char *lnk; |
114 | ||
2e852276 | 115 | lnk = strjoina(dir, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service"); |
e48fdd84 LP |
116 | |
117 | mkdir_parents(lnk, 0755); | |
4a62c710 MS |
118 | if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0) |
119 | return log_error_errno(errno, "Failed to create symlink %s: %m", lnk); | |
e48fdd84 LP |
120 | |
121 | } else { | |
4dda4e63 ZJS |
122 | _cleanup_free_ char *_fsck = NULL; |
123 | const char *fsck; | |
124 | ||
125 | if (in_initrd() && path_equal(where, "/sysroot")) { | |
126 | r = write_fsck_sysroot_service(dir, what); | |
127 | if (r < 0) | |
128 | return r; | |
129 | ||
130 | fsck = "systemd-fsck-root.service"; | |
131 | } else { | |
132 | r = unit_name_from_path_instance("systemd-fsck", what, ".service", &_fsck); | |
133 | if (r < 0) | |
134 | return log_error_errno(r, "Failed to create fsck service name: %m"); | |
135 | ||
136 | fsck = _fsck; | |
137 | } | |
e48fdd84 LP |
138 | |
139 | fprintf(f, | |
2e852276 ZJS |
140 | "RequiresOverridable=%1$s\n" |
141 | "After=%1$s\n", | |
e48fdd84 LP |
142 | fsck); |
143 | } | |
144 | ||
145 | return 0; | |
146 | } | |
29686440 | 147 | |
2e852276 ZJS |
148 | int generator_write_timeouts( |
149 | const char *dir, | |
150 | const char *what, | |
151 | const char *where, | |
152 | const char *opts, | |
153 | char **filtered) { | |
29686440 ZJS |
154 | |
155 | /* Allow configuration how long we wait for a device that | |
156 | * backs a mount point to show up. This is useful to support | |
157 | * endless device timeouts for devices that show up only after | |
158 | * user input, like crypto devices. */ | |
159 | ||
d15d0333 | 160 | _cleanup_free_ char *node = NULL, *unit = NULL, *timeout = NULL; |
29686440 ZJS |
161 | usec_t u; |
162 | int r; | |
29686440 | 163 | |
d15d0333 ZJS |
164 | r = fstab_filter_options(opts, "comment=systemd.device-timeout\0" "x-systemd.device-timeout\0", |
165 | NULL, &timeout, filtered); | |
166 | if (r <= 0) | |
167 | return r; | |
b3208b66 | 168 | |
d15d0333 | 169 | r = parse_sec(timeout, &u); |
29686440 | 170 | if (r < 0) { |
7410616c | 171 | log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout); |
29686440 ZJS |
172 | return 0; |
173 | } | |
174 | ||
175 | node = fstab_node_to_udev_node(what); | |
176 | if (!node) | |
177 | return log_oom(); | |
178 | ||
7410616c LP |
179 | r = unit_name_from_path(node, ".device", &unit); |
180 | if (r < 0) | |
181 | return log_error_errno(r, "Failed to make unit name from path: %m"); | |
29686440 | 182 | |
8eea8687 ZJS |
183 | return write_drop_in_format(dir, unit, 50, "device-timeout", |
184 | "# Automatically generated by %s\n\n" | |
de48d5ab | 185 | "[Unit]\nJobTimeoutSec=" USEC_FMT, |
8eea8687 ZJS |
186 | program_invocation_short_name, |
187 | u / USEC_PER_SEC); | |
29686440 | 188 | } |