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80750adb | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
80750adb ZJS |
2 | |
3 | #include <errno.h> | |
4 | #include <fcntl.h> | |
385de88a | 5 | #include <getopt.h> |
01234e1f | 6 | #include <linux/btrfs.h> |
80750adb ZJS |
7 | #include <linux/magic.h> |
8 | #include <sys/ioctl.h> | |
9 | #include <sys/mount.h> | |
80750adb ZJS |
10 | #include <sys/types.h> |
11 | #include <sys/vfs.h> | |
12 | ||
18c528e9 | 13 | #include "blockdev-util.h" |
c34b75a1 | 14 | #include "crypt-util.h" |
80750adb | 15 | #include "device-nodes.h" |
c34b75a1 | 16 | #include "dissect-image.h" |
80750adb ZJS |
17 | #include "escape.h" |
18 | #include "fd-util.h" | |
19 | #include "format-util.h" | |
20 | #include "log.h" | |
2b82a99f | 21 | #include "main-func.h" |
049af8ad | 22 | #include "mountpoint-util.h" |
80750adb | 23 | #include "parse-util.h" |
294bf0c3 | 24 | #include "pretty-print.h" |
d6f1e660 | 25 | #include "resize-fs.h" |
80750adb | 26 | |
088c49c3 LP |
27 | static const char *arg_target = NULL; |
28 | static bool arg_dry_run = false; | |
385de88a | 29 | |
80088c7e | 30 | #if HAVE_LIBCRYPTSETUP |
c34b75a1 | 31 | static int resize_crypt_luks_device(dev_t devno, const char *fstype, dev_t main_devno) { |
54b22b26 | 32 | _cleanup_free_ char *devpath = NULL, *main_devpath = NULL; |
c34b75a1 | 33 | _cleanup_(crypt_freep) struct crypt_device *cd = NULL; |
54b22b26 | 34 | _cleanup_close_ int main_devfd = -1; |
c34b75a1 ZJS |
35 | uint64_t size; |
36 | int r; | |
37 | ||
54b22b26 LP |
38 | r = device_path_make_major_minor(S_IFBLK, main_devno, &main_devpath); |
39 | if (r < 0) | |
40 | return log_error_errno(r, "Failed to format device major/minor path: %m"); | |
41 | ||
c34b75a1 ZJS |
42 | main_devfd = open(main_devpath, O_RDONLY|O_CLOEXEC); |
43 | if (main_devfd < 0) | |
44 | return log_error_errno(errno, "Failed to open \"%s\": %m", main_devpath); | |
45 | ||
46 | if (ioctl(main_devfd, BLKGETSIZE64, &size) != 0) | |
47 | return log_error_errno(errno, "Failed to query size of \"%s\" (before resize): %m", | |
48 | main_devpath); | |
49 | ||
50 | log_debug("%s is %"PRIu64" bytes", main_devpath, size); | |
54b22b26 LP |
51 | r = device_path_make_major_minor(S_IFBLK, devno, &devpath); |
52 | if (r < 0) | |
53 | return log_error_errno(r, "Failed to format major/minor path: %m"); | |
c34b75a1 | 54 | |
c34b75a1 ZJS |
55 | r = crypt_init(&cd, devpath); |
56 | if (r < 0) | |
57 | return log_error_errno(r, "crypt_init(\"%s\") failed: %m", devpath); | |
58 | ||
59 | crypt_set_log_callback(cd, cryptsetup_log_glue, NULL); | |
60 | ||
61 | r = crypt_load(cd, CRYPT_LUKS, NULL); | |
62 | if (r < 0) | |
63 | return log_debug_errno(r, "Failed to load LUKS metadata for %s: %m", devpath); | |
64 | ||
385de88a ZJS |
65 | if (arg_dry_run) |
66 | return 0; | |
67 | ||
c34b75a1 ZJS |
68 | r = crypt_resize(cd, main_devpath, 0); |
69 | if (r < 0) | |
70 | return log_error_errno(r, "crypt_resize() of %s failed: %m", devpath); | |
71 | ||
72 | if (ioctl(main_devfd, BLKGETSIZE64, &size) != 0) | |
73 | log_warning_errno(errno, "Failed to query size of \"%s\" (after resize): %m", | |
74 | devpath); | |
75 | else | |
76 | log_debug("%s is now %"PRIu64" bytes", main_devpath, size); | |
77 | ||
78 | return 1; | |
79 | } | |
80088c7e | 80 | #endif |
c34b75a1 | 81 | |
6b000af4 | 82 | static int maybe_resize_underlying_device(const char *mountpath, dev_t main_devno) { |
54b22b26 | 83 | _cleanup_free_ char *fstype = NULL, *devpath = NULL; |
c34b75a1 | 84 | dev_t devno; |
c34b75a1 ZJS |
85 | int r; |
86 | ||
80088c7e | 87 | #if HAVE_LIBCRYPTSETUP |
c34b75a1 | 88 | crypt_set_log_callback(NULL, cryptsetup_log_glue, NULL); |
ac8bb308 IS |
89 | if (DEBUG_LOGGING) |
90 | crypt_set_debug_level(CRYPT_DEBUG_ALL); | |
80088c7e | 91 | #endif |
c34b75a1 ZJS |
92 | |
93 | r = get_block_device_harder(mountpath, &devno); | |
94 | if (r < 0) | |
95 | return log_error_errno(r, "Failed to determine underlying block device of \"%s\": %m", | |
96 | mountpath); | |
97 | ||
98 | log_debug("Underlying device %d:%d, main dev %d:%d, %s", | |
99 | major(devno), minor(devno), | |
100 | major(main_devno), minor(main_devno), | |
101 | devno == main_devno ? "same" : "different"); | |
102 | if (devno == main_devno) | |
103 | return 0; | |
104 | ||
54b22b26 LP |
105 | r = device_path_make_major_minor(S_IFBLK, devno, &devpath); |
106 | if (r < 0) | |
107 | return log_error_errno(r, "Failed to format device major/minor path: %m"); | |
108 | ||
c34b75a1 | 109 | r = probe_filesystem(devpath, &fstype); |
7cc84b2c ZJS |
110 | if (r == -EUCLEAN) |
111 | return log_warning_errno(r, "Cannot reliably determine probe \"%s\", refusing to proceed.", devpath); | |
c34b75a1 ZJS |
112 | if (r < 0) |
113 | return log_warning_errno(r, "Failed to probe \"%s\": %m", devpath); | |
114 | ||
80088c7e | 115 | #if HAVE_LIBCRYPTSETUP |
c34b75a1 ZJS |
116 | if (streq_ptr(fstype, "crypto_LUKS")) |
117 | return resize_crypt_luks_device(devno, fstype, main_devno); | |
80088c7e | 118 | #endif |
c34b75a1 | 119 | |
d6f1e660 | 120 | log_debug("Don't know how to resize %s of type %s, ignoring.", devpath, strnull(fstype)); |
c34b75a1 ZJS |
121 | return 0; |
122 | } | |
123 | ||
37ec0fdd LP |
124 | static int help(void) { |
125 | _cleanup_free_ char *link = NULL; | |
126 | int r; | |
127 | ||
128 | r = terminal_urlify_man("systemd-growfs@.service", "8", &link); | |
129 | if (r < 0) | |
130 | return log_oom(); | |
131 | ||
385de88a ZJS |
132 | printf("%s [OPTIONS...] /path/to/mountpoint\n\n" |
133 | "Grow filesystem or encrypted payload to device size.\n\n" | |
134 | "Options:\n" | |
135 | " -h --help Show this help and exit\n" | |
136 | " --version Print version string and exit\n" | |
137 | " -n --dry-run Just print what would be done\n" | |
37ec0fdd LP |
138 | "\nSee the %s for details.\n" |
139 | , program_invocation_short_name | |
140 | , link | |
141 | ); | |
142 | ||
143 | return 0; | |
385de88a ZJS |
144 | } |
145 | ||
146 | static int parse_argv(int argc, char *argv[]) { | |
147 | enum { | |
148 | ARG_VERSION = 0x100, | |
149 | }; | |
150 | ||
151 | int c; | |
152 | ||
153 | static const struct option options[] = { | |
154 | { "help", no_argument, NULL, 'h' }, | |
155 | { "version" , no_argument, NULL, ARG_VERSION }, | |
156 | { "dry-run", no_argument, NULL, 'n' }, | |
157 | {} | |
158 | }; | |
159 | ||
160 | assert(argc >= 0); | |
161 | assert(argv); | |
162 | ||
163 | while ((c = getopt_long(argc, argv, "hn", options, NULL)) >= 0) | |
164 | switch(c) { | |
165 | case 'h': | |
37ec0fdd | 166 | return help(); |
385de88a ZJS |
167 | |
168 | case ARG_VERSION: | |
37ec0fdd | 169 | return version(); |
385de88a ZJS |
170 | |
171 | case 'n': | |
172 | arg_dry_run = true; | |
173 | break; | |
174 | ||
175 | case '?': | |
176 | return -EINVAL; | |
177 | ||
178 | default: | |
179 | assert_not_reached("Unhandled option"); | |
180 | } | |
181 | ||
baaa35ad ZJS |
182 | if (optind + 1 != argc) |
183 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
184 | "%s excepts exactly one argument (the mount point).", | |
185 | program_invocation_short_name); | |
385de88a ZJS |
186 | |
187 | arg_target = argv[optind]; | |
188 | ||
189 | return 1; | |
190 | } | |
191 | ||
2b82a99f | 192 | static int run(int argc, char *argv[]) { |
80750adb | 193 | _cleanup_close_ int mountfd = -1, devfd = -1; |
54b22b26 | 194 | _cleanup_free_ char *devpath = NULL; |
d6f1e660 | 195 | uint64_t size, newsize; |
54b22b26 | 196 | char fb[FORMAT_BYTES_MAX]; |
54b22b26 | 197 | dev_t devno; |
80750adb ZJS |
198 | int r; |
199 | ||
6bf3c61c | 200 | log_setup_service(); |
80750adb | 201 | |
385de88a | 202 | r = parse_argv(argc, argv); |
2b82a99f ZJS |
203 | if (r <= 0) |
204 | return r; | |
385de88a ZJS |
205 | |
206 | r = path_is_mount_point(arg_target, NULL, 0); | |
2b82a99f ZJS |
207 | if (r < 0) |
208 | return log_error_errno(r, "Failed to check if \"%s\" is a mount point: %m", arg_target); | |
209 | if (r == 0) | |
210 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "\"%s\" is not a mount point: %m", arg_target); | |
80750adb | 211 | |
385de88a | 212 | r = get_block_device(arg_target, &devno); |
2b82a99f ZJS |
213 | if (r < 0) |
214 | return log_error_errno(r, "Failed to determine block device of \"%s\": %m", arg_target); | |
80750adb | 215 | |
6b000af4 | 216 | r = maybe_resize_underlying_device(arg_target, devno); |
c34b75a1 | 217 | if (r < 0) |
2b82a99f | 218 | return r; |
c34b75a1 | 219 | |
385de88a | 220 | mountfd = open(arg_target, O_RDONLY|O_CLOEXEC); |
2b82a99f ZJS |
221 | if (mountfd < 0) |
222 | return log_error_errno(errno, "Failed to open \"%s\": %m", arg_target); | |
80750adb | 223 | |
54b22b26 | 224 | r = device_path_make_major_minor(S_IFBLK, devno, &devpath); |
2b82a99f ZJS |
225 | if (r < 0) |
226 | return log_error_errno(r, "Failed to format device major/minor path: %m"); | |
54b22b26 | 227 | |
80750adb | 228 | devfd = open(devpath, O_RDONLY|O_CLOEXEC); |
2b82a99f ZJS |
229 | if (devfd < 0) |
230 | return log_error_errno(errno, "Failed to open \"%s\": %m", devpath); | |
80750adb | 231 | |
2b82a99f ZJS |
232 | if (ioctl(devfd, BLKGETSIZE64, &size) != 0) |
233 | return log_error_errno(errno, "Failed to query size of \"%s\": %m", devpath); | |
80750adb | 234 | |
d6f1e660 ZJS |
235 | log_debug("Resizing \"%s\" to %"PRIu64" bytes...", arg_target, size); |
236 | r = resize_fs(mountfd, size, &newsize); | |
237 | if (r < 0) | |
238 | return log_error_errno(r, "Failed to resize \"%s\" to %"PRIu64" bytes: %m", | |
239 | arg_target, size); | |
240 | if (newsize == size) | |
241 | log_info("Successfully resized \"%s\" to %s bytes.", | |
242 | arg_target, | |
243 | format_bytes(fb, sizeof fb, newsize)); | |
244 | else | |
245 | log_info("Successfully resized \"%s\" to %s bytes (%"PRIu64" bytes lost due to blocksize).", | |
246 | arg_target, | |
247 | format_bytes(fb, sizeof fb, newsize), | |
248 | size - newsize); | |
249 | return 0; | |
80750adb | 250 | } |
2b82a99f ZJS |
251 | |
252 | DEFINE_MAIN_FUNCTION(run); |