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f4ce2b3e LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 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 | #include <stdlib.h> | |
24 | ||
25 | #include "efivars.h" | |
26 | #include "path-util.h" | |
27 | #include "util.h" | |
1da350f1 | 28 | #include "mkdir.h" |
d09ee17d | 29 | #include "unit-name.h" |
e48fdd84 LP |
30 | #include "virt.h" |
31 | #include "generator.h" | |
32 | #include "special.h" | |
f4ce2b3e | 33 | |
1da350f1 | 34 | static const char *arg_dest = "/tmp"; |
f4ce2b3e LP |
35 | |
36 | int main(int argc, char *argv[]) { | |
e48fdd84 LP |
37 | _cleanup_free_ char *what = NULL; |
38 | _cleanup_fclose_ FILE *f = NULL; | |
f4ce2b3e LP |
39 | int r = EXIT_SUCCESS; |
40 | sd_id128_t id; | |
97123e53 | 41 | char *name; |
f4ce2b3e LP |
42 | |
43 | if (argc > 1 && argc != 4) { | |
44 | log_error("This program takes three or no arguments."); | |
45 | return EXIT_FAILURE; | |
46 | } | |
47 | ||
48 | if (argc > 1) | |
49 | arg_dest = argv[3]; | |
50 | ||
51 | log_set_target(LOG_TARGET_SAFE); | |
52 | log_parse_environment(); | |
53 | log_open(); | |
54 | ||
55 | umask(0022); | |
56 | ||
e48fdd84 LP |
57 | if (in_initrd()) { |
58 | log_debug("In initrd, exiting."); | |
f4ce2b3e | 59 | return EXIT_SUCCESS; |
e48fdd84 LP |
60 | } |
61 | if (detect_container(NULL) > 0) { | |
62 | log_debug("In a container, exiting."); | |
63 | return EXIT_SUCCESS; | |
64 | } | |
f4ce2b3e | 65 | |
e48fdd84 LP |
66 | if (!is_efi_boot()) { |
67 | log_debug("Not an EFI boot, exiting."); | |
f4ce2b3e | 68 | return EXIT_SUCCESS; |
e48fdd84 LP |
69 | } |
70 | ||
71 | if (dir_is_empty("/boot") <= 0) { | |
72 | log_debug("/boot already populated, exiting."); | |
73 | return EXIT_SUCCESS; | |
74 | } | |
f4ce2b3e | 75 | |
c51d84dc | 76 | r = efi_loader_get_device_part_uuid(&id); |
e48fdd84 LP |
77 | if (r == -ENOENT) { |
78 | log_debug("EFI loader partition unknown exiting."); | |
f4ce2b3e | 79 | return EXIT_SUCCESS; |
e48fdd84 | 80 | } else if (r < 0) { |
f4ce2b3e LP |
81 | log_error("Failed to read ESP partition UUID: %s", strerror(-r)); |
82 | return EXIT_FAILURE; | |
83 | } | |
84 | ||
97123e53 | 85 | name = strappenda(arg_dest, "/boot.mount"); |
f4ce2b3e LP |
86 | f = fopen(name, "wxe"); |
87 | if (!f) { | |
88 | log_error("Failed to create mount unit file %s: %m", name); | |
89 | return EXIT_FAILURE; | |
90 | } | |
91 | ||
d09ee17d TG |
92 | r = asprintf(&what, |
93 | "/dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", | |
94 | SD_ID128_FORMAT_VAL(id)); | |
95 | if (r < 0) { | |
96 | log_oom(); | |
97 | return EXIT_FAILURE; | |
98 | } | |
99 | ||
f4ce2b3e LP |
100 | fprintf(f, |
101 | "# Automatially generated by systemd-efi-boot-generator\n\n" | |
4beaf24f | 102 | "[Unit]\n" |
e48fdd84 LP |
103 | "Description=EFI System Partition\n"); |
104 | ||
105 | r = generator_write_fsck_deps(f, arg_dest, what, "/boot", "vfat"); | |
106 | if (r < 0) | |
107 | return EXIT_FAILURE; | |
108 | ||
109 | fprintf(f, | |
d09ee17d | 110 | "\n" |
f4ce2b3e | 111 | "[Mount]\n" |
d09ee17d | 112 | "What=%s\n" |
e48fdd84 LP |
113 | "Where=/boot\n" |
114 | "Type=vfat\n" | |
0b9e3f2c | 115 | "Options=umask=0077,noauto\n", |
e48fdd84 LP |
116 | what); |
117 | ||
118 | fflush(f); | |
119 | if (ferror(f)) { | |
120 | log_error("Failed to write mount unit file: %m"); | |
121 | return EXIT_FAILURE; | |
122 | } | |
f4ce2b3e | 123 | |
97123e53 | 124 | name = strappenda(arg_dest, "/boot.automount"); |
e48fdd84 LP |
125 | fclose(f); |
126 | f = fopen(name, "wxe"); | |
127 | if (!f) { | |
f4ce2b3e LP |
128 | log_error("Failed to create automount unit file %s: %m", name); |
129 | return EXIT_FAILURE; | |
130 | } | |
131 | ||
4beaf24f LP |
132 | fputs("# Automatially generated by systemd-efi-boot-generator\n\n" |
133 | "[Unit]\n" | |
134 | "Description=EFI System Partition Automount\n\n" | |
135 | "[Automount]\n" | |
e48fdd84 LP |
136 | "Where=/boot\n", f); |
137 | ||
138 | fflush(f); | |
139 | if (ferror(f)) { | |
140 | log_error("Failed to write automount unit file: %m"); | |
141 | return EXIT_FAILURE; | |
142 | } | |
f4ce2b3e | 143 | |
e48fdd84 | 144 | name = strappenda(arg_dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/boot.automount"); |
1da350f1 LP |
145 | mkdir_parents(name, 0755); |
146 | ||
f4ce2b3e | 147 | if (symlink("../boot.automount", name) < 0) { |
c79bb9e4 | 148 | log_error("Failed to create symlink %s: %m", name); |
f4ce2b3e LP |
149 | return EXIT_FAILURE; |
150 | } | |
151 | ||
97123e53 | 152 | return EXIT_SUCCESS; |
f4ce2b3e | 153 | } |