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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
b6e676ce LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2015 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include <getopt.h> | |
22 | ||
23 | #include "sd-event.h" | |
3f6fd1ba | 24 | |
b5efdb8a | 25 | #include "alloc-util.h" |
3ffd4af2 | 26 | #include "fd-util.h" |
f4f15635 | 27 | #include "fs-util.h" |
25300b5a | 28 | #include "hostname-util.h" |
b6e676ce | 29 | #include "import-raw.h" |
3f6fd1ba LP |
30 | #include "import-tar.h" |
31 | #include "import-util.h" | |
32 | #include "machine-image.h" | |
33 | #include "signal-util.h" | |
07630cea | 34 | #include "string-util.h" |
3f6fd1ba | 35 | #include "verbs.h" |
b6e676ce LP |
36 | |
37 | static bool arg_force = false; | |
38 | static bool arg_read_only = false; | |
39 | static const char *arg_image_root = "/var/lib/machines"; | |
40 | ||
41 | static int interrupt_signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
42 | log_notice("Transfer aborted."); | |
43 | sd_event_exit(sd_event_source_get_event(s), EINTR); | |
44 | return 0; | |
45 | } | |
46 | ||
47 | static void on_tar_finished(TarImport *import, int error, void *userdata) { | |
48 | sd_event *event = userdata; | |
49 | assert(import); | |
50 | ||
51 | if (error == 0) | |
52 | log_info("Operation completed successfully."); | |
53 | ||
54 | sd_event_exit(event, abs(error)); | |
55 | } | |
56 | ||
57 | static int import_tar(int argc, char *argv[], void *userdata) { | |
58 | _cleanup_(tar_import_unrefp) TarImport *import = NULL; | |
4afd3348 | 59 | _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
b6e676ce LP |
60 | const char *path = NULL, *local = NULL; |
61 | _cleanup_free_ char *ll = NULL; | |
62 | _cleanup_close_ int open_fd = -1; | |
63 | int r, fd; | |
64 | ||
65 | if (argc >= 2) | |
66 | path = argv[1]; | |
67 | if (isempty(path) || streq(path, "-")) | |
68 | path = NULL; | |
69 | ||
70 | if (argc >= 3) | |
71 | local = argv[2]; | |
72 | else if (path) | |
73 | local = basename(path); | |
74 | if (isempty(local) || streq(local, "-")) | |
75 | local = NULL; | |
76 | ||
77 | if (local) { | |
78 | r = tar_strip_suffixes(local, &ll); | |
79 | if (r < 0) | |
80 | return log_oom(); | |
81 | ||
82 | local = ll; | |
83 | ||
84 | if (!machine_name_is_valid(local)) { | |
85 | log_error("Local image name '%s' is not valid.", local); | |
86 | return -EINVAL; | |
87 | } | |
88 | ||
89 | if (!arg_force) { | |
90 | r = image_find(local, NULL); | |
91 | if (r < 0) | |
92 | return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); | |
93 | else if (r > 0) { | |
92dfd88b | 94 | log_error("Image '%s' already exists.", local); |
b6e676ce LP |
95 | return -EEXIST; |
96 | } | |
97 | } | |
98 | } else | |
99 | local = "imported"; | |
100 | ||
101 | if (path) { | |
102 | open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
103 | if (open_fd < 0) | |
104 | return log_error_errno(errno, "Failed to open tar image to import: %m"); | |
105 | ||
106 | fd = open_fd; | |
107 | ||
108 | log_info("Importing '%s', saving as '%s'.", path, local); | |
109 | } else { | |
110 | _cleanup_free_ char *pretty = NULL; | |
111 | ||
112 | fd = STDIN_FILENO; | |
113 | ||
114 | (void) readlink_malloc("/proc/self/fd/0", &pretty); | |
115 | log_info("Importing '%s', saving as '%s'.", strna(pretty), local); | |
116 | } | |
117 | ||
118 | r = sd_event_default(&event); | |
119 | if (r < 0) | |
120 | return log_error_errno(r, "Failed to allocate event loop: %m"); | |
121 | ||
72c0a2c2 LP |
122 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
123 | (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); | |
124 | (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); | |
b6e676ce LP |
125 | |
126 | r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event); | |
127 | if (r < 0) | |
128 | return log_error_errno(r, "Failed to allocate importer: %m"); | |
129 | ||
130 | r = tar_import_start(import, fd, local, arg_force, arg_read_only); | |
131 | if (r < 0) | |
132 | return log_error_errno(r, "Failed to import image: %m"); | |
133 | ||
134 | r = sd_event_loop(event); | |
135 | if (r < 0) | |
136 | return log_error_errno(r, "Failed to run event loop: %m"); | |
137 | ||
138 | log_info("Exiting."); | |
139 | return -r; | |
140 | } | |
141 | ||
142 | static void on_raw_finished(RawImport *import, int error, void *userdata) { | |
143 | sd_event *event = userdata; | |
144 | assert(import); | |
145 | ||
146 | if (error == 0) | |
147 | log_info("Operation completed successfully."); | |
148 | ||
149 | sd_event_exit(event, abs(error)); | |
150 | } | |
151 | ||
152 | static int import_raw(int argc, char *argv[], void *userdata) { | |
153 | _cleanup_(raw_import_unrefp) RawImport *import = NULL; | |
4afd3348 | 154 | _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
b6e676ce LP |
155 | const char *path = NULL, *local = NULL; |
156 | _cleanup_free_ char *ll = NULL; | |
157 | _cleanup_close_ int open_fd = -1; | |
158 | int r, fd; | |
159 | ||
160 | if (argc >= 2) | |
161 | path = argv[1]; | |
162 | if (isempty(path) || streq(path, "-")) | |
163 | path = NULL; | |
164 | ||
165 | if (argc >= 3) | |
166 | local = argv[2]; | |
167 | else if (path) | |
168 | local = basename(path); | |
169 | if (isempty(local) || streq(local, "-")) | |
170 | local = NULL; | |
171 | ||
172 | if (local) { | |
173 | r = raw_strip_suffixes(local, &ll); | |
174 | if (r < 0) | |
175 | return log_oom(); | |
176 | ||
177 | local = ll; | |
178 | ||
179 | if (!machine_name_is_valid(local)) { | |
180 | log_error("Local image name '%s' is not valid.", local); | |
181 | return -EINVAL; | |
182 | } | |
183 | ||
184 | if (!arg_force) { | |
185 | r = image_find(local, NULL); | |
186 | if (r < 0) | |
187 | return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); | |
188 | else if (r > 0) { | |
92dfd88b | 189 | log_error("Image '%s' already exists.", local); |
b6e676ce LP |
190 | return -EEXIST; |
191 | } | |
192 | } | |
193 | } else | |
194 | local = "imported"; | |
195 | ||
196 | if (path) { | |
197 | open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
198 | if (open_fd < 0) | |
199 | return log_error_errno(errno, "Failed to open raw image to import: %m"); | |
200 | ||
201 | fd = open_fd; | |
202 | ||
203 | log_info("Importing '%s', saving as '%s'.", path, local); | |
204 | } else { | |
205 | _cleanup_free_ char *pretty = NULL; | |
206 | ||
207 | fd = STDIN_FILENO; | |
208 | ||
209 | (void) readlink_malloc("/proc/self/fd/0", &pretty); | |
210 | log_info("Importing '%s', saving as '%s'.", pretty, local); | |
211 | } | |
212 | ||
213 | r = sd_event_default(&event); | |
214 | if (r < 0) | |
215 | return log_error_errno(r, "Failed to allocate event loop: %m"); | |
216 | ||
72c0a2c2 LP |
217 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
218 | (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); | |
219 | (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); | |
b6e676ce LP |
220 | |
221 | r = raw_import_new(&import, event, arg_image_root, on_raw_finished, event); | |
222 | if (r < 0) | |
223 | return log_error_errno(r, "Failed to allocate importer: %m"); | |
224 | ||
225 | r = raw_import_start(import, fd, local, arg_force, arg_read_only); | |
226 | if (r < 0) | |
227 | return log_error_errno(r, "Failed to import image: %m"); | |
228 | ||
229 | r = sd_event_loop(event); | |
230 | if (r < 0) | |
231 | return log_error_errno(r, "Failed to run event loop: %m"); | |
232 | ||
233 | log_info("Exiting."); | |
234 | return -r; | |
235 | } | |
236 | ||
237 | static int help(int argc, char *argv[], void *userdata) { | |
238 | ||
239 | printf("%s [OPTIONS...] {COMMAND} ...\n\n" | |
587fec42 | 240 | "Import container or virtual machine images.\n\n" |
b6e676ce LP |
241 | " -h --help Show this help\n" |
242 | " --version Show package version\n" | |
243 | " --force Force creation of image\n" | |
244 | " --image-root=PATH Image root directory\n" | |
245 | " --read-only Create a read-only image\n\n" | |
246 | "Commands:\n" | |
587fec42 LP |
247 | " tar FILE [NAME] Import a TAR image\n" |
248 | " raw FILE [NAME] Import a RAW image\n", | |
b6e676ce LP |
249 | program_invocation_short_name); |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | static int parse_argv(int argc, char *argv[]) { | |
255 | ||
256 | enum { | |
257 | ARG_VERSION = 0x100, | |
258 | ARG_FORCE, | |
259 | ARG_IMAGE_ROOT, | |
260 | ARG_READ_ONLY, | |
261 | }; | |
262 | ||
263 | static const struct option options[] = { | |
264 | { "help", no_argument, NULL, 'h' }, | |
265 | { "version", no_argument, NULL, ARG_VERSION }, | |
266 | { "force", no_argument, NULL, ARG_FORCE }, | |
267 | { "image-root", required_argument, NULL, ARG_IMAGE_ROOT }, | |
268 | { "read-only", no_argument, NULL, ARG_READ_ONLY }, | |
269 | {} | |
270 | }; | |
271 | ||
272 | int c; | |
273 | ||
274 | assert(argc >= 0); | |
275 | assert(argv); | |
276 | ||
277 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
278 | ||
279 | switch (c) { | |
280 | ||
281 | case 'h': | |
282 | return help(0, NULL, NULL); | |
283 | ||
284 | case ARG_VERSION: | |
3f6fd1ba | 285 | return version(); |
b6e676ce LP |
286 | |
287 | case ARG_FORCE: | |
288 | arg_force = true; | |
289 | break; | |
290 | ||
291 | case ARG_IMAGE_ROOT: | |
292 | arg_image_root = optarg; | |
293 | break; | |
294 | ||
295 | case ARG_READ_ONLY: | |
296 | arg_read_only = true; | |
297 | break; | |
298 | ||
299 | case '?': | |
300 | return -EINVAL; | |
301 | ||
302 | default: | |
303 | assert_not_reached("Unhandled option"); | |
304 | } | |
305 | ||
306 | return 1; | |
307 | } | |
308 | ||
309 | static int import_main(int argc, char *argv[]) { | |
310 | ||
311 | static const Verb verbs[] = { | |
312 | { "help", VERB_ANY, VERB_ANY, 0, help }, | |
313 | { "tar", 2, 3, 0, import_tar }, | |
314 | { "raw", 2, 3, 0, import_raw }, | |
315 | {} | |
316 | }; | |
317 | ||
318 | return dispatch_verb(argc, argv, verbs, NULL); | |
319 | } | |
320 | ||
321 | int main(int argc, char *argv[]) { | |
322 | int r; | |
323 | ||
324 | setlocale(LC_ALL, ""); | |
325 | log_parse_environment(); | |
326 | log_open(); | |
327 | ||
328 | r = parse_argv(argc, argv); | |
329 | if (r <= 0) | |
330 | goto finish; | |
331 | ||
ce30c8dc | 332 | (void) ignore_signals(SIGPIPE, -1); |
b6e676ce LP |
333 | |
334 | r = import_main(argc, argv); | |
335 | ||
336 | finish: | |
337 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
338 | } |