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e48fdd84 LP |
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 | ||
4f5dd394 LP |
24 | #include "dropin.h" |
25 | #include "escape.h" | |
26 | #include "fileio.h" | |
27 | #include "fstab-util.h" | |
e48fdd84 | 28 | #include "mkdir.h" |
4f5dd394 LP |
29 | #include "path-util.h" |
30 | #include "special.h" | |
07630cea | 31 | #include "string-util.h" |
e48fdd84 | 32 | #include "unit-name.h" |
4f5dd394 | 33 | #include "util.h" |
e48fdd84 LP |
34 | #include "generator.h" |
35 | ||
4dda4e63 | 36 | static int write_fsck_sysroot_service(const char *dir, const char *what) { |
85eca92e | 37 | _cleanup_free_ char *device = NULL, *escaped = NULL; |
4dda4e63 | 38 | _cleanup_fclose_ FILE *f = NULL; |
85eca92e | 39 | const char *unit; |
4dda4e63 ZJS |
40 | int r; |
41 | ||
fa05e972 AB |
42 | escaped = cescape(what); |
43 | if (!escaped) | |
44 | return log_oom(); | |
45 | ||
4dda4e63 ZJS |
46 | unit = strjoina(dir, "/systemd-fsck-root.service"); |
47 | log_debug("Creating %s", unit); | |
48 | ||
49 | r = unit_name_from_path(what, ".device", &device); | |
50 | if (r < 0) | |
51 | return log_error_errno(r, "Failed to convert device \"%s\" to unit name: %m", what); | |
52 | ||
53 | f = fopen(unit, "wxe"); | |
54 | if (!f) | |
55 | return log_error_errno(errno, "Failed to create unit file %s: %m", unit); | |
56 | ||
57 | fprintf(f, | |
58 | "# Automatically generated by %1$s\n\n" | |
59 | "[Unit]\n" | |
60 | "Documentation=man:systemd-fsck-root.service(8)\n" | |
61 | "Description=File System Check on %2$s\n" | |
62 | "DefaultDependencies=no\n" | |
63 | "BindsTo=%3$s\n" | |
64 | "After=%3$s\n" | |
65 | "Before=shutdown.target\n" | |
66 | "\n" | |
67 | "[Service]\n" | |
68 | "Type=oneshot\n" | |
69 | "RemainAfterExit=yes\n" | |
fa05e972 | 70 | "ExecStart=" SYSTEMD_FSCK_PATH " %4$s\n" |
4dda4e63 ZJS |
71 | "TimeoutSec=0\n", |
72 | program_invocation_short_name, | |
73 | what, | |
fa05e972 AB |
74 | device, |
75 | escaped); | |
4dda4e63 | 76 | |
2929b4a6 LP |
77 | r = fflush_and_check(f); |
78 | if (r < 0) | |
79 | return log_error_errno(r, "Failed to write unit file %s: %m", unit); | |
4dda4e63 ZJS |
80 | |
81 | return 0; | |
82 | } | |
83 | ||
e48fdd84 LP |
84 | int generator_write_fsck_deps( |
85 | FILE *f, | |
2e852276 | 86 | const char *dir, |
e48fdd84 LP |
87 | const char *what, |
88 | const char *where, | |
6db615c1 | 89 | const char *fstype) { |
e48fdd84 | 90 | |
7410616c LP |
91 | int r; |
92 | ||
e48fdd84 | 93 | assert(f); |
2e852276 | 94 | assert(dir); |
6db615c1 LP |
95 | assert(what); |
96 | assert(where); | |
e48fdd84 LP |
97 | |
98 | if (!is_device_path(what)) { | |
99 | log_warning("Checking was requested for \"%s\", but it is not a device.", what); | |
100 | return 0; | |
101 | } | |
102 | ||
6db615c1 | 103 | if (!isempty(fstype) && !streq(fstype, "auto")) { |
eb66db55 | 104 | r = fsck_exists(fstype); |
85eca92e LP |
105 | if (r < 0) |
106 | log_warning_errno(r, "Checking was requested for %s, but couldn't detect if fsck.%s may be used, proceeding: %m", what, fstype); | |
107 | else if (r == 0) { | |
e48fdd84 | 108 | /* treat missing check as essentially OK */ |
85eca92e | 109 | log_debug("Checking was requested for %s, but fsck.%s does not exist.", what, fstype); |
571d0134 | 110 | return 0; |
85eca92e | 111 | } |
e48fdd84 LP |
112 | } |
113 | ||
2e852276 | 114 | if (path_equal(where, "/")) { |
85eca92e | 115 | const char *lnk; |
e48fdd84 | 116 | |
2e852276 | 117 | lnk = strjoina(dir, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service"); |
e48fdd84 LP |
118 | |
119 | mkdir_parents(lnk, 0755); | |
4a62c710 MS |
120 | if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0) |
121 | return log_error_errno(errno, "Failed to create symlink %s: %m", lnk); | |
e48fdd84 LP |
122 | |
123 | } else { | |
4dda4e63 ZJS |
124 | _cleanup_free_ char *_fsck = NULL; |
125 | const char *fsck; | |
126 | ||
127 | if (in_initrd() && path_equal(where, "/sysroot")) { | |
128 | r = write_fsck_sysroot_service(dir, what); | |
129 | if (r < 0) | |
130 | return r; | |
131 | ||
132 | fsck = "systemd-fsck-root.service"; | |
133 | } else { | |
134 | r = unit_name_from_path_instance("systemd-fsck", what, ".service", &_fsck); | |
135 | if (r < 0) | |
136 | return log_error_errno(r, "Failed to create fsck service name: %m"); | |
137 | ||
138 | fsck = _fsck; | |
139 | } | |
e48fdd84 LP |
140 | |
141 | fprintf(f, | |
2e852276 ZJS |
142 | "RequiresOverridable=%1$s\n" |
143 | "After=%1$s\n", | |
e48fdd84 LP |
144 | fsck); |
145 | } | |
146 | ||
147 | return 0; | |
148 | } | |
29686440 | 149 | |
2e852276 ZJS |
150 | int generator_write_timeouts( |
151 | const char *dir, | |
152 | const char *what, | |
153 | const char *where, | |
154 | const char *opts, | |
155 | char **filtered) { | |
29686440 ZJS |
156 | |
157 | /* Allow configuration how long we wait for a device that | |
158 | * backs a mount point to show up. This is useful to support | |
159 | * endless device timeouts for devices that show up only after | |
160 | * user input, like crypto devices. */ | |
161 | ||
d15d0333 | 162 | _cleanup_free_ char *node = NULL, *unit = NULL, *timeout = NULL; |
29686440 ZJS |
163 | usec_t u; |
164 | int r; | |
29686440 | 165 | |
d15d0333 ZJS |
166 | r = fstab_filter_options(opts, "comment=systemd.device-timeout\0" "x-systemd.device-timeout\0", |
167 | NULL, &timeout, filtered); | |
168 | if (r <= 0) | |
169 | return r; | |
b3208b66 | 170 | |
d15d0333 | 171 | r = parse_sec(timeout, &u); |
29686440 | 172 | if (r < 0) { |
7410616c | 173 | log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout); |
29686440 ZJS |
174 | return 0; |
175 | } | |
176 | ||
177 | node = fstab_node_to_udev_node(what); | |
178 | if (!node) | |
179 | return log_oom(); | |
180 | ||
7410616c LP |
181 | r = unit_name_from_path(node, ".device", &unit); |
182 | if (r < 0) | |
183 | return log_error_errno(r, "Failed to make unit name from path: %m"); | |
29686440 | 184 | |
8eea8687 ZJS |
185 | return write_drop_in_format(dir, unit, 50, "device-timeout", |
186 | "# Automatically generated by %s\n\n" | |
de48d5ab | 187 | "[Unit]\nJobTimeoutSec=" USEC_FMT, |
8eea8687 ZJS |
188 | program_invocation_short_name, |
189 | u / USEC_PER_SEC); | |
29686440 | 190 | } |