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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
42483a74 | 2 | |
89c727e0 | 3 | #include <getopt.h> |
42483a74 | 4 | #include <sys/stat.h> |
42483a74 | 5 | |
decad482 | 6 | #include "alloc-util.h" |
89c727e0 | 7 | #include "build.h" |
ec61371f | 8 | #include "devnum-util.h" |
a628d933 | 9 | #include "hibernate-resume-config.h" |
54d7fcc6 | 10 | #include "hibernate-util.h" |
baa6a42d | 11 | #include "initrd-util.h" |
42483a74 | 12 | #include "log.h" |
760e99bb MY |
13 | #include "main-func.h" |
14 | #include "parse-util.h" | |
89c727e0 | 15 | #include "pretty-print.h" |
a628d933 | 16 | #include "static-destruct.h" |
42483a74 | 17 | |
a3f7047f | 18 | static HibernateInfo arg_info = {}; |
8f8e481f | 19 | static bool arg_clear = false; |
a628d933 MY |
20 | |
21 | STATIC_DESTRUCTOR_REGISTER(arg_info, hibernate_info_done); | |
22 | ||
89c727e0 MY |
23 | static int help(void) { |
24 | _cleanup_free_ char *link = NULL; | |
25 | int r; | |
26 | ||
27 | r = terminal_urlify_man("systemd-hibernate-resume", "8", &link); | |
28 | if (r < 0) | |
29 | return log_oom(); | |
30 | ||
31 | printf("%s [OPTIONS...] [DEVICE [OFFSET]]\n" | |
32 | "\n%sInitiate resume from hibernation.%s\n\n" | |
33 | " -h --help Show this help\n" | |
34 | " --version Show package version\n" | |
8f8e481f | 35 | " --clear Clear hibernation storage information from EFI and exit\n" |
89c727e0 MY |
36 | "\nSee the %s for details.\n", |
37 | program_invocation_short_name, | |
38 | ansi_highlight(), | |
39 | ansi_normal(), | |
40 | link); | |
41 | ||
42 | return 0; | |
43 | } | |
44 | ||
45 | static int parse_argv(int argc, char *argv[]) { | |
46 | ||
47 | enum { | |
48 | ARG_VERSION = 0x100, | |
8f8e481f | 49 | ARG_CLEAR, |
89c727e0 MY |
50 | }; |
51 | ||
52 | static const struct option options[] = { | |
53 | { "help", no_argument, NULL, 'h' }, | |
54 | { "version", no_argument, NULL, ARG_VERSION }, | |
8f8e481f | 55 | { "clear", no_argument, NULL, ARG_CLEAR }, |
89c727e0 MY |
56 | {} |
57 | }; | |
58 | ||
59 | int c; | |
60 | ||
61 | assert(argc >= 0); | |
62 | assert(argv); | |
63 | ||
64 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
65 | ||
66 | switch (c) { | |
67 | ||
68 | case 'h': | |
69 | return help(); | |
70 | ||
71 | case ARG_VERSION: | |
72 | return version(); | |
73 | ||
8f8e481f MY |
74 | case ARG_CLEAR: |
75 | arg_clear = true; | |
76 | break; | |
77 | ||
89c727e0 MY |
78 | case '?': |
79 | return -EINVAL; | |
80 | ||
81 | default: | |
82 | assert_not_reached(); | |
83 | } | |
84 | ||
8f8e481f MY |
85 | if (argc > optind && arg_clear) |
86 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
87 | "Extraneous arguments specified with --clear, refusing."); | |
88 | ||
89c727e0 MY |
89 | return 1; |
90 | } | |
91 | ||
a628d933 MY |
92 | static int setup_hibernate_info_and_warn(void) { |
93 | int r; | |
94 | ||
95 | r = acquire_hibernate_info(&arg_info); | |
96 | if (r == -ENODEV) { | |
97 | log_info_errno(r, "No resume device found, exiting."); | |
98 | return 0; | |
99 | } | |
100 | if (r < 0) | |
101 | return r; | |
102 | ||
103 | compare_hibernate_location_and_warn(&arg_info); | |
104 | ||
105 | return 1; | |
106 | } | |
760e99bb | 107 | |
8f8e481f MY |
108 | static int action_clear(void) { |
109 | int r; | |
110 | ||
111 | assert(arg_clear); | |
112 | ||
113 | /* Let's insist that the system identifier is verified still. After all if things don't match, | |
114 | * the resume wouldn't get triggered in the first place. We should not erase the var if booted | |
115 | * from LiveCD/portable systems/... */ | |
116 | r = get_efi_hibernate_location(/* ret = */ NULL); | |
117 | if (r <= 0) | |
118 | return r; | |
119 | ||
120 | r = clear_efi_hibernate_location_and_warn(); | |
121 | if (r > 0) | |
e14e9c9f | 122 | log_notice("Successfully cleared HibernateLocation EFI variable."); |
8f8e481f MY |
123 | return r; |
124 | } | |
125 | ||
760e99bb | 126 | static int run(int argc, char *argv[]) { |
42483a74 | 127 | struct stat st; |
42483a74 IS |
128 | int r; |
129 | ||
d2acb93d | 130 | log_setup(); |
42483a74 | 131 | |
89c727e0 MY |
132 | r = parse_argv(argc, argv); |
133 | if (r <= 0) | |
134 | return r; | |
135 | ||
136 | if (argc - optind > 2) | |
a628d933 | 137 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program expects zero, one, or two arguments."); |
760e99bb | 138 | |
42483a74 IS |
139 | umask(0022); |
140 | ||
8f8e481f MY |
141 | if (arg_clear) |
142 | return action_clear(); | |
143 | ||
ac528e3e | 144 | if (!in_initrd()) |
8f8e481f MY |
145 | return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE), |
146 | "Not running in initrd, refusing to initiate resume from hibernation."); | |
ac528e3e | 147 | |
89c727e0 | 148 | if (argc <= optind) { |
a628d933 MY |
149 | r = setup_hibernate_info_and_warn(); |
150 | if (r <= 0) | |
151 | return r; | |
42483a74 | 152 | |
24ab77c3 | 153 | if (arg_info.efi) |
fbc88824 | 154 | (void) clear_efi_hibernate_location_and_warn(); |
89c727e0 MY |
155 | } else { |
156 | arg_info.device = ASSERT_PTR(argv[optind]); | |
157 | ||
158 | if (argc - optind == 2) { | |
159 | r = safe_atou64(argv[optind + 1], &arg_info.offset); | |
160 | if (r < 0) | |
161 | return log_error_errno(r, "Failed to parse resume offset %s: %m", argv[optind + 1]); | |
162 | } | |
42483a74 IS |
163 | } |
164 | ||
a628d933 MY |
165 | if (stat(arg_info.device, &st) < 0) |
166 | return log_error_errno(errno, "Failed to stat resume device '%s': %m", arg_info.device); | |
42483a74 | 167 | |
760e99bb | 168 | if (!S_ISBLK(st.st_mode)) |
667b0c48 | 169 | return log_error_errno(SYNTHETIC_ERRNO(ENOTBLK), |
a628d933 | 170 | "Resume device '%s' is not a block device.", arg_info.device); |
42483a74 | 171 | |
760e99bb | 172 | /* The write shall not return if a resume takes place. */ |
a628d933 | 173 | r = write_resume_config(st.st_rdev, arg_info.offset, arg_info.device); |
61b76b3a | 174 | log_full_errno(r < 0 || arg_info.efi ? LOG_WARNING : LOG_INFO, |
760e99bb MY |
175 | r < 0 ? r : SYNTHETIC_ERRNO(ENOENT), |
176 | "Unable to resume from device '%s' (" DEVNUM_FORMAT_STR ") offset %" PRIu64 ", continuing boot process.", | |
a628d933 | 177 | arg_info.device, DEVNUM_FORMAT_VAL(st.st_rdev), arg_info.offset); |
760e99bb | 178 | return r; |
42483a74 | 179 | } |
760e99bb MY |
180 | |
181 | DEFINE_MAIN_FUNCTION(run); |