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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" |
e48fdd84 LP |
29 | #include "virt.h" |
30 | #include "generator.h" | |
31 | #include "special.h" | |
f4ce2b3e | 32 | |
1da350f1 | 33 | static const char *arg_dest = "/tmp"; |
f4ce2b3e LP |
34 | |
35 | int main(int argc, char *argv[]) { | |
e48fdd84 LP |
36 | _cleanup_free_ char *what = NULL; |
37 | _cleanup_fclose_ FILE *f = NULL; | |
f4ce2b3e LP |
38 | int r = EXIT_SUCCESS; |
39 | sd_id128_t id; | |
97123e53 | 40 | char *name; |
f4ce2b3e LP |
41 | |
42 | if (argc > 1 && argc != 4) { | |
43 | log_error("This program takes three or no arguments."); | |
44 | return EXIT_FAILURE; | |
45 | } | |
46 | ||
47 | if (argc > 1) | |
48 | arg_dest = argv[3]; | |
49 | ||
50 | log_set_target(LOG_TARGET_SAFE); | |
51 | log_parse_environment(); | |
52 | log_open(); | |
53 | ||
54 | umask(0022); | |
55 | ||
e48fdd84 LP |
56 | if (in_initrd()) { |
57 | log_debug("In initrd, exiting."); | |
f4ce2b3e | 58 | return EXIT_SUCCESS; |
e48fdd84 | 59 | } |
6d26dfe1 | 60 | |
e48fdd84 LP |
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 | ||
776c4419 | 71 | r = path_is_mount_point("/boot", true); |
3d8dcaf1 LP |
72 | if (r > 0) { |
73 | log_debug("/boot is already a mount point, exiting."); | |
74 | return EXIT_SUCCESS; | |
75 | } | |
776c4419 TH |
76 | if (r == -ENOENT) |
77 | log_debug("/boot does not exist, continuing."); | |
3d8dcaf1 | 78 | else if (dir_is_empty("/boot") <= 0) { |
e48fdd84 LP |
79 | log_debug("/boot already populated, exiting."); |
80 | return EXIT_SUCCESS; | |
81 | } | |
f4ce2b3e | 82 | |
c51d84dc | 83 | r = efi_loader_get_device_part_uuid(&id); |
e48fdd84 | 84 | if (r == -ENOENT) { |
a873c5bd | 85 | log_debug("EFI loader partition unknown, exiting."); |
f4ce2b3e | 86 | return EXIT_SUCCESS; |
e48fdd84 | 87 | } else if (r < 0) { |
da927ba9 | 88 | log_error_errno(r, "Failed to read ESP partition UUID: %m"); |
f4ce2b3e LP |
89 | return EXIT_FAILURE; |
90 | } | |
91 | ||
63c372cb | 92 | name = strjoina(arg_dest, "/boot.mount"); |
f4ce2b3e LP |
93 | f = fopen(name, "wxe"); |
94 | if (!f) { | |
56f64d95 | 95 | log_error_errno(errno, "Failed to create mount unit file %s: %m", name); |
f4ce2b3e LP |
96 | return EXIT_FAILURE; |
97 | } | |
98 | ||
d09ee17d TG |
99 | r = asprintf(&what, |
100 | "/dev/disk/by-partuuid/%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", | |
101 | SD_ID128_FORMAT_VAL(id)); | |
102 | if (r < 0) { | |
103 | log_oom(); | |
104 | return EXIT_FAILURE; | |
105 | } | |
106 | ||
f4ce2b3e LP |
107 | fprintf(f, |
108 | "# Automatially generated by systemd-efi-boot-generator\n\n" | |
4beaf24f | 109 | "[Unit]\n" |
c3834f9b LP |
110 | "Description=EFI System Partition\n" |
111 | "Documentation=man:systemd-efi-boot-generator(8)\n"); | |
e48fdd84 LP |
112 | |
113 | r = generator_write_fsck_deps(f, arg_dest, what, "/boot", "vfat"); | |
114 | if (r < 0) | |
115 | return EXIT_FAILURE; | |
116 | ||
117 | fprintf(f, | |
d09ee17d | 118 | "\n" |
f4ce2b3e | 119 | "[Mount]\n" |
d09ee17d | 120 | "What=%s\n" |
e48fdd84 LP |
121 | "Where=/boot\n" |
122 | "Type=vfat\n" | |
0b9e3f2c | 123 | "Options=umask=0077,noauto\n", |
e48fdd84 LP |
124 | what); |
125 | ||
126 | fflush(f); | |
127 | if (ferror(f)) { | |
56f64d95 | 128 | log_error_errno(errno, "Failed to write mount unit file: %m"); |
e48fdd84 LP |
129 | return EXIT_FAILURE; |
130 | } | |
f4ce2b3e | 131 | |
63c372cb | 132 | name = strjoina(arg_dest, "/boot.automount"); |
e48fdd84 LP |
133 | fclose(f); |
134 | f = fopen(name, "wxe"); | |
135 | if (!f) { | |
56f64d95 | 136 | log_error_errno(errno, "Failed to create automount unit file %s: %m", name); |
f4ce2b3e LP |
137 | return EXIT_FAILURE; |
138 | } | |
139 | ||
4beaf24f LP |
140 | fputs("# Automatially generated by systemd-efi-boot-generator\n\n" |
141 | "[Unit]\n" | |
142 | "Description=EFI System Partition Automount\n\n" | |
143 | "[Automount]\n" | |
e48fdd84 LP |
144 | "Where=/boot\n", f); |
145 | ||
146 | fflush(f); | |
147 | if (ferror(f)) { | |
56f64d95 | 148 | log_error_errno(errno, "Failed to write automount unit file: %m"); |
e48fdd84 LP |
149 | return EXIT_FAILURE; |
150 | } | |
f4ce2b3e | 151 | |
63c372cb | 152 | name = strjoina(arg_dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/boot.automount"); |
1da350f1 LP |
153 | mkdir_parents(name, 0755); |
154 | ||
f4ce2b3e | 155 | if (symlink("../boot.automount", name) < 0) { |
56f64d95 | 156 | log_error_errno(errno, "Failed to create symlink %s: %m", name); |
f4ce2b3e LP |
157 | return EXIT_FAILURE; |
158 | } | |
159 | ||
97123e53 | 160 | return EXIT_SUCCESS; |
f4ce2b3e | 161 | } |