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b6e676ce LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2015 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 <getopt.h> | |
23 | ||
24 | #include "sd-event.h" | |
25 | #include "event-util.h" | |
26 | #include "verbs.h" | |
27 | #include "build.h" | |
24882e06 | 28 | #include "signal-util.h" |
25300b5a | 29 | #include "hostname-util.h" |
b6e676ce LP |
30 | #include "machine-image.h" |
31 | #include "import-util.h" | |
32 | #include "import-tar.h" | |
33 | #include "import-raw.h" | |
34 | ||
35 | static bool arg_force = false; | |
36 | static bool arg_read_only = false; | |
37 | static const char *arg_image_root = "/var/lib/machines"; | |
38 | ||
39 | static int interrupt_signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
40 | log_notice("Transfer aborted."); | |
41 | sd_event_exit(sd_event_source_get_event(s), EINTR); | |
42 | return 0; | |
43 | } | |
44 | ||
45 | static void on_tar_finished(TarImport *import, int error, void *userdata) { | |
46 | sd_event *event = userdata; | |
47 | assert(import); | |
48 | ||
49 | if (error == 0) | |
50 | log_info("Operation completed successfully."); | |
51 | ||
52 | sd_event_exit(event, abs(error)); | |
53 | } | |
54 | ||
55 | static int import_tar(int argc, char *argv[], void *userdata) { | |
56 | _cleanup_(tar_import_unrefp) TarImport *import = NULL; | |
57 | _cleanup_event_unref_ sd_event *event = NULL; | |
58 | const char *path = NULL, *local = NULL; | |
59 | _cleanup_free_ char *ll = NULL; | |
60 | _cleanup_close_ int open_fd = -1; | |
61 | int r, fd; | |
62 | ||
63 | if (argc >= 2) | |
64 | path = argv[1]; | |
65 | if (isempty(path) || streq(path, "-")) | |
66 | path = NULL; | |
67 | ||
68 | if (argc >= 3) | |
69 | local = argv[2]; | |
70 | else if (path) | |
71 | local = basename(path); | |
72 | if (isempty(local) || streq(local, "-")) | |
73 | local = NULL; | |
74 | ||
75 | if (local) { | |
76 | r = tar_strip_suffixes(local, &ll); | |
77 | if (r < 0) | |
78 | return log_oom(); | |
79 | ||
80 | local = ll; | |
81 | ||
82 | if (!machine_name_is_valid(local)) { | |
83 | log_error("Local image name '%s' is not valid.", local); | |
84 | return -EINVAL; | |
85 | } | |
86 | ||
87 | if (!arg_force) { | |
88 | r = image_find(local, NULL); | |
89 | if (r < 0) | |
90 | return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); | |
91 | else if (r > 0) { | |
92 | log_error_errno(EEXIST, "Image '%s' already exists.", local); | |
93 | return -EEXIST; | |
94 | } | |
95 | } | |
96 | } else | |
97 | local = "imported"; | |
98 | ||
99 | if (path) { | |
100 | open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
101 | if (open_fd < 0) | |
102 | return log_error_errno(errno, "Failed to open tar image to import: %m"); | |
103 | ||
104 | fd = open_fd; | |
105 | ||
106 | log_info("Importing '%s', saving as '%s'.", path, local); | |
107 | } else { | |
108 | _cleanup_free_ char *pretty = NULL; | |
109 | ||
110 | fd = STDIN_FILENO; | |
111 | ||
112 | (void) readlink_malloc("/proc/self/fd/0", &pretty); | |
113 | log_info("Importing '%s', saving as '%s'.", strna(pretty), local); | |
114 | } | |
115 | ||
116 | r = sd_event_default(&event); | |
117 | if (r < 0) | |
118 | return log_error_errno(r, "Failed to allocate event loop: %m"); | |
119 | ||
72c0a2c2 LP |
120 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
121 | (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); | |
122 | (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); | |
b6e676ce LP |
123 | |
124 | r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event); | |
125 | if (r < 0) | |
126 | return log_error_errno(r, "Failed to allocate importer: %m"); | |
127 | ||
128 | r = tar_import_start(import, fd, local, arg_force, arg_read_only); | |
129 | if (r < 0) | |
130 | return log_error_errno(r, "Failed to import image: %m"); | |
131 | ||
132 | r = sd_event_loop(event); | |
133 | if (r < 0) | |
134 | return log_error_errno(r, "Failed to run event loop: %m"); | |
135 | ||
136 | log_info("Exiting."); | |
137 | return -r; | |
138 | } | |
139 | ||
140 | static void on_raw_finished(RawImport *import, int error, void *userdata) { | |
141 | sd_event *event = userdata; | |
142 | assert(import); | |
143 | ||
144 | if (error == 0) | |
145 | log_info("Operation completed successfully."); | |
146 | ||
147 | sd_event_exit(event, abs(error)); | |
148 | } | |
149 | ||
150 | static int import_raw(int argc, char *argv[], void *userdata) { | |
151 | _cleanup_(raw_import_unrefp) RawImport *import = NULL; | |
152 | _cleanup_event_unref_ sd_event *event = NULL; | |
153 | const char *path = NULL, *local = NULL; | |
154 | _cleanup_free_ char *ll = NULL; | |
155 | _cleanup_close_ int open_fd = -1; | |
156 | int r, fd; | |
157 | ||
158 | if (argc >= 2) | |
159 | path = argv[1]; | |
160 | if (isempty(path) || streq(path, "-")) | |
161 | path = NULL; | |
162 | ||
163 | if (argc >= 3) | |
164 | local = argv[2]; | |
165 | else if (path) | |
166 | local = basename(path); | |
167 | if (isempty(local) || streq(local, "-")) | |
168 | local = NULL; | |
169 | ||
170 | if (local) { | |
171 | r = raw_strip_suffixes(local, &ll); | |
172 | if (r < 0) | |
173 | return log_oom(); | |
174 | ||
175 | local = ll; | |
176 | ||
177 | if (!machine_name_is_valid(local)) { | |
178 | log_error("Local image name '%s' is not valid.", local); | |
179 | return -EINVAL; | |
180 | } | |
181 | ||
182 | if (!arg_force) { | |
183 | r = image_find(local, NULL); | |
184 | if (r < 0) | |
185 | return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); | |
186 | else if (r > 0) { | |
187 | log_error_errno(EEXIST, "Image '%s' already exists.", local); | |
188 | return -EEXIST; | |
189 | } | |
190 | } | |
191 | } else | |
192 | local = "imported"; | |
193 | ||
194 | if (path) { | |
195 | open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
196 | if (open_fd < 0) | |
197 | return log_error_errno(errno, "Failed to open raw image to import: %m"); | |
198 | ||
199 | fd = open_fd; | |
200 | ||
201 | log_info("Importing '%s', saving as '%s'.", path, local); | |
202 | } else { | |
203 | _cleanup_free_ char *pretty = NULL; | |
204 | ||
205 | fd = STDIN_FILENO; | |
206 | ||
207 | (void) readlink_malloc("/proc/self/fd/0", &pretty); | |
208 | log_info("Importing '%s', saving as '%s'.", pretty, local); | |
209 | } | |
210 | ||
211 | r = sd_event_default(&event); | |
212 | if (r < 0) | |
213 | return log_error_errno(r, "Failed to allocate event loop: %m"); | |
214 | ||
72c0a2c2 LP |
215 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
216 | (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); | |
217 | (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); | |
b6e676ce LP |
218 | |
219 | r = raw_import_new(&import, event, arg_image_root, on_raw_finished, event); | |
220 | if (r < 0) | |
221 | return log_error_errno(r, "Failed to allocate importer: %m"); | |
222 | ||
223 | r = raw_import_start(import, fd, local, arg_force, arg_read_only); | |
224 | if (r < 0) | |
225 | return log_error_errno(r, "Failed to import image: %m"); | |
226 | ||
227 | r = sd_event_loop(event); | |
228 | if (r < 0) | |
229 | return log_error_errno(r, "Failed to run event loop: %m"); | |
230 | ||
231 | log_info("Exiting."); | |
232 | return -r; | |
233 | } | |
234 | ||
235 | static int help(int argc, char *argv[], void *userdata) { | |
236 | ||
237 | printf("%s [OPTIONS...] {COMMAND} ...\n\n" | |
587fec42 | 238 | "Import container or virtual machine images.\n\n" |
b6e676ce LP |
239 | " -h --help Show this help\n" |
240 | " --version Show package version\n" | |
241 | " --force Force creation of image\n" | |
242 | " --image-root=PATH Image root directory\n" | |
243 | " --read-only Create a read-only image\n\n" | |
244 | "Commands:\n" | |
587fec42 LP |
245 | " tar FILE [NAME] Import a TAR image\n" |
246 | " raw FILE [NAME] Import a RAW image\n", | |
b6e676ce LP |
247 | program_invocation_short_name); |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | static int parse_argv(int argc, char *argv[]) { | |
253 | ||
254 | enum { | |
255 | ARG_VERSION = 0x100, | |
256 | ARG_FORCE, | |
257 | ARG_IMAGE_ROOT, | |
258 | ARG_READ_ONLY, | |
259 | }; | |
260 | ||
261 | static const struct option options[] = { | |
262 | { "help", no_argument, NULL, 'h' }, | |
263 | { "version", no_argument, NULL, ARG_VERSION }, | |
264 | { "force", no_argument, NULL, ARG_FORCE }, | |
265 | { "image-root", required_argument, NULL, ARG_IMAGE_ROOT }, | |
266 | { "read-only", no_argument, NULL, ARG_READ_ONLY }, | |
267 | {} | |
268 | }; | |
269 | ||
270 | int c; | |
271 | ||
272 | assert(argc >= 0); | |
273 | assert(argv); | |
274 | ||
275 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
276 | ||
277 | switch (c) { | |
278 | ||
279 | case 'h': | |
280 | return help(0, NULL, NULL); | |
281 | ||
282 | case ARG_VERSION: | |
283 | puts(PACKAGE_STRING); | |
284 | puts(SYSTEMD_FEATURES); | |
285 | return 0; | |
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 | } |