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90199220 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 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 <sys/xattr.h> | |
dfd1520d | 23 | #include <linux/fs.h> |
90199220 LP |
24 | #include <curl/curl.h> |
25 | ||
7079cfef | 26 | #include "sd-daemon.h" |
90199220 | 27 | #include "utf8.h" |
8620a9a3 LP |
28 | #include "strv.h" |
29 | #include "copy.h" | |
0d6e763b LP |
30 | #include "btrfs-util.h" |
31 | #include "util.h" | |
32 | #include "macro.h" | |
33 | #include "mkdir.h" | |
c6878637 | 34 | #include "rm-rf.h" |
26166c88 | 35 | #include "path-util.h" |
25300b5a | 36 | #include "hostname-util.h" |
3d7415f4 | 37 | #include "import-util.h" |
b6e676ce | 38 | #include "import-common.h" |
0d6e763b LP |
39 | #include "curl-util.h" |
40 | #include "qcow2-util.h" | |
dc2c282b LP |
41 | #include "pull-job.h" |
42 | #include "pull-common.h" | |
43 | #include "pull-raw.h" | |
90199220 | 44 | |
7079cfef LP |
45 | typedef enum RawProgress { |
46 | RAW_DOWNLOADING, | |
47 | RAW_VERIFYING, | |
48 | RAW_UNPACKING, | |
49 | RAW_FINALIZING, | |
50 | RAW_COPYING, | |
51 | } RawProgress; | |
90199220 | 52 | |
dc2c282b | 53 | struct RawPull { |
90199220 LP |
54 | sd_event *event; |
55 | CurlGlue *glue; | |
56 | ||
087682d1 | 57 | char *image_root; |
90199220 | 58 | |
dc2c282b LP |
59 | PullJob *raw_job; |
60 | PullJob *checksum_job; | |
61 | PullJob *signature_job; | |
90199220 | 62 | |
dc2c282b | 63 | RawPullFinished on_finished; |
0d6e763b | 64 | void *userdata; |
90199220 | 65 | |
0d6e763b LP |
66 | char *local; |
67 | bool force_local; | |
26166c88 | 68 | bool grow_machine_directory; |
8620a9a3 | 69 | |
0d6e763b LP |
70 | char *temp_path; |
71 | char *final_path; | |
8f695058 LP |
72 | |
73 | ImportVerify verify; | |
0d6e763b | 74 | }; |
49bb233b | 75 | |
dc2c282b | 76 | RawPull* raw_pull_unref(RawPull *i) { |
0d6e763b | 77 | if (!i) |
90199220 LP |
78 | return NULL; |
79 | ||
dc2c282b LP |
80 | pull_job_unref(i->raw_job); |
81 | pull_job_unref(i->checksum_job); | |
82 | pull_job_unref(i->signature_job); | |
90199220 | 83 | |
0d6e763b LP |
84 | curl_glue_unref(i->glue); |
85 | sd_event_unref(i->event); | |
90199220 | 86 | |
0d6e763b LP |
87 | if (i->temp_path) { |
88 | (void) unlink(i->temp_path); | |
89 | free(i->temp_path); | |
90199220 LP |
90 | } |
91 | ||
0d6e763b LP |
92 | free(i->final_path); |
93 | free(i->image_root); | |
94 | free(i->local); | |
95 | free(i); | |
90199220 LP |
96 | |
97 | return NULL; | |
98 | } | |
99 | ||
dc2c282b LP |
100 | int raw_pull_new( |
101 | RawPull **ret, | |
8b71fce8 LP |
102 | sd_event *event, |
103 | const char *image_root, | |
dc2c282b | 104 | RawPullFinished on_finished, |
8b71fce8 LP |
105 | void *userdata) { |
106 | ||
dc2c282b | 107 | _cleanup_(raw_pull_unrefp) RawPull *i = NULL; |
0d6e763b | 108 | int r; |
8620a9a3 | 109 | |
0d6e763b | 110 | assert(ret); |
8620a9a3 | 111 | |
dc2c282b | 112 | i = new0(RawPull, 1); |
0d6e763b | 113 | if (!i) |
8620a9a3 LP |
114 | return -ENOMEM; |
115 | ||
0d6e763b LP |
116 | i->on_finished = on_finished; |
117 | i->userdata = userdata; | |
8620a9a3 | 118 | |
0d6e763b LP |
119 | i->image_root = strdup(image_root ?: "/var/lib/machines"); |
120 | if (!i->image_root) | |
8620a9a3 LP |
121 | return -ENOMEM; |
122 | ||
26166c88 LP |
123 | i->grow_machine_directory = path_startswith(i->image_root, "/var/lib/machines"); |
124 | ||
0d6e763b LP |
125 | if (event) |
126 | i->event = sd_event_ref(event); | |
127 | else { | |
128 | r = sd_event_default(&i->event); | |
dfd1520d | 129 | if (r < 0) |
0d6e763b | 130 | return r; |
2f64ba0e | 131 | } |
8620a9a3 | 132 | |
0d6e763b | 133 | r = curl_glue_new(&i->glue, i->event); |
2f64ba0e | 134 | if (r < 0) |
0d6e763b | 135 | return r; |
8620a9a3 | 136 | |
dc2c282b | 137 | i->glue->on_finished = pull_job_curl_on_finished; |
0d6e763b | 138 | i->glue->userdata = i; |
8620a9a3 | 139 | |
0d6e763b LP |
140 | *ret = i; |
141 | i = NULL; | |
8620a9a3 | 142 | |
2f64ba0e LP |
143 | return 0; |
144 | } | |
145 | ||
dc2c282b | 146 | static void raw_pull_report_progress(RawPull *i, RawProgress p) { |
7079cfef LP |
147 | unsigned percent; |
148 | ||
149 | assert(i); | |
150 | ||
151 | switch (p) { | |
152 | ||
153 | case RAW_DOWNLOADING: { | |
154 | unsigned remain = 80; | |
155 | ||
156 | percent = 0; | |
157 | ||
158 | if (i->checksum_job) { | |
159 | percent += i->checksum_job->progress_percent * 5 / 100; | |
160 | remain -= 5; | |
161 | } | |
162 | ||
163 | if (i->signature_job) { | |
164 | percent += i->signature_job->progress_percent * 5 / 100; | |
165 | remain -= 5; | |
166 | } | |
167 | ||
168 | if (i->raw_job) | |
169 | percent += i->raw_job->progress_percent * remain / 100; | |
170 | break; | |
171 | } | |
172 | ||
173 | case RAW_VERIFYING: | |
174 | percent = 80; | |
175 | break; | |
176 | ||
177 | case RAW_UNPACKING: | |
178 | percent = 85; | |
179 | break; | |
180 | ||
181 | case RAW_FINALIZING: | |
182 | percent = 90; | |
183 | break; | |
184 | ||
185 | case RAW_COPYING: | |
186 | percent = 95; | |
187 | break; | |
188 | ||
189 | default: | |
190 | assert_not_reached("Unknown progress state"); | |
191 | } | |
192 | ||
193 | sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent); | |
194 | log_debug("Combined progress %u%%", percent); | |
195 | } | |
196 | ||
dc2c282b | 197 | static int raw_pull_maybe_convert_qcow2(RawPull *i) { |
edce2aed LP |
198 | _cleanup_close_ int converted_fd = -1; |
199 | _cleanup_free_ char *t = NULL; | |
200 | int r; | |
201 | ||
0d6e763b LP |
202 | assert(i); |
203 | assert(i->raw_job); | |
edce2aed | 204 | |
0d6e763b | 205 | r = qcow2_detect(i->raw_job->disk_fd); |
edce2aed LP |
206 | if (r < 0) |
207 | return log_error_errno(r, "Failed to detect whether this is a QCOW2 image: %m"); | |
208 | if (r == 0) | |
209 | return 0; | |
210 | ||
211 | /* This is a QCOW2 image, let's convert it */ | |
14bcf25c | 212 | r = tempfn_random(i->final_path, NULL, &t); |
edce2aed LP |
213 | if (r < 0) |
214 | return log_oom(); | |
215 | ||
b6e676ce | 216 | converted_fd = open(t, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); |
edce2aed LP |
217 | if (converted_fd < 0) |
218 | return log_error_errno(errno, "Failed to create %s: %m", t); | |
219 | ||
1ed8f8c1 | 220 | r = chattr_fd(converted_fd, FS_NOCOW_FL, FS_NOCOW_FL); |
0d6e763b LP |
221 | if (r < 0) |
222 | log_warning_errno(errno, "Failed to set file attributes on %s: %m", t); | |
223 | ||
ec5cb56e LP |
224 | log_info("Unpacking QCOW2 file."); |
225 | ||
0d6e763b | 226 | r = qcow2_convert(i->raw_job->disk_fd, converted_fd); |
edce2aed LP |
227 | if (r < 0) { |
228 | unlink(t); | |
229 | return log_error_errno(r, "Failed to convert qcow2 image: %m"); | |
230 | } | |
231 | ||
b6e676ce | 232 | (void) unlink(i->temp_path); |
0d6e763b | 233 | free(i->temp_path); |
0d6e763b | 234 | i->temp_path = t; |
edce2aed LP |
235 | t = NULL; |
236 | ||
0d6e763b LP |
237 | safe_close(i->raw_job->disk_fd); |
238 | i->raw_job->disk_fd = converted_fd; | |
edce2aed LP |
239 | converted_fd = -1; |
240 | ||
241 | return 1; | |
242 | } | |
243 | ||
dc2c282b | 244 | static int raw_pull_make_local_copy(RawPull *i) { |
0d6e763b LP |
245 | _cleanup_free_ char *tp = NULL; |
246 | _cleanup_close_ int dfd = -1; | |
247 | const char *p; | |
90199220 LP |
248 | int r; |
249 | ||
0d6e763b LP |
250 | assert(i); |
251 | assert(i->raw_job); | |
90199220 | 252 | |
0d6e763b | 253 | if (!i->local) |
90199220 LP |
254 | return 0; |
255 | ||
85dbc41d LP |
256 | if (i->raw_job->etag_exists) { |
257 | /* We have downloaded this one previously, reopen it */ | |
258 | ||
259 | assert(i->raw_job->disk_fd < 0); | |
260 | ||
0d6e763b | 261 | if (!i->final_path) { |
dc2c282b | 262 | r = pull_make_path(i->raw_job->url, i->raw_job->etag, i->image_root, ".raw-", ".raw", &i->final_path); |
49bb233b | 263 | if (r < 0) |
0d6e763b | 264 | return log_oom(); |
49bb233b | 265 | } |
49bb233b | 266 | |
0d6e763b LP |
267 | i->raw_job->disk_fd = open(i->final_path, O_RDONLY|O_NOCTTY|O_CLOEXEC); |
268 | if (i->raw_job->disk_fd < 0) | |
269 | return log_error_errno(errno, "Failed to open vendor image: %m"); | |
85dbc41d LP |
270 | } else { |
271 | /* We freshly downloaded the image, use it */ | |
272 | ||
273 | assert(i->raw_job->disk_fd >= 0); | |
274 | ||
275 | if (lseek(i->raw_job->disk_fd, SEEK_SET, 0) == (off_t) -1) | |
276 | return log_error_errno(errno, "Failed to seek to beginning of vendor image: %m"); | |
90199220 LP |
277 | } |
278 | ||
63c372cb | 279 | p = strjoina(i->image_root, "/", i->local, ".raw"); |
49bb233b | 280 | |
d9e2daaf LP |
281 | if (i->force_local) |
282 | (void) rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); | |
49bb233b | 283 | |
14bcf25c | 284 | r = tempfn_random(p, NULL, &tp); |
49bb233b | 285 | if (r < 0) |
0d6e763b | 286 | return log_oom(); |
49bb233b | 287 | |
0d6e763b LP |
288 | dfd = open(tp, O_WRONLY|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); |
289 | if (dfd < 0) | |
290 | return log_error_errno(errno, "Failed to create writable copy of image: %m"); | |
49bb233b | 291 | |
0d6e763b LP |
292 | /* Turn off COW writing. This should greatly improve |
293 | * performance on COW file systems like btrfs, since it | |
294 | * reduces fragmentation caused by not allowing in-place | |
295 | * writes. */ | |
1ed8f8c1 | 296 | r = chattr_fd(dfd, FS_NOCOW_FL, FS_NOCOW_FL); |
0d6e763b LP |
297 | if (r < 0) |
298 | log_warning_errno(errno, "Failed to set file attributes on %s: %m", tp); | |
90199220 | 299 | |
0d6e763b | 300 | r = copy_bytes(i->raw_job->disk_fd, dfd, (off_t) -1, true); |
90199220 | 301 | if (r < 0) { |
0d6e763b LP |
302 | unlink(tp); |
303 | return log_error_errno(r, "Failed to make writable copy of image: %m"); | |
90199220 LP |
304 | } |
305 | ||
0d6e763b LP |
306 | (void) copy_times(i->raw_job->disk_fd, dfd); |
307 | (void) copy_xattr(i->raw_job->disk_fd, dfd); | |
1e20b411 | 308 | |
0d6e763b | 309 | dfd = safe_close(dfd); |
1e20b411 | 310 | |
0d6e763b LP |
311 | r = rename(tp, p); |
312 | if (r < 0) { | |
313 | unlink(tp); | |
314 | return log_error_errno(errno, "Failed to move writable image into place: %m"); | |
1e20b411 LP |
315 | } |
316 | ||
0d6e763b | 317 | log_info("Created new local image '%s'.", i->local); |
1e20b411 LP |
318 | return 0; |
319 | } | |
320 | ||
dc2c282b | 321 | static bool raw_pull_is_done(RawPull *i) { |
8b71fce8 LP |
322 | assert(i); |
323 | assert(i->raw_job); | |
324 | ||
dc2c282b | 325 | if (i->raw_job->state != PULL_JOB_DONE) |
8b71fce8 | 326 | return false; |
dc2c282b | 327 | if (i->checksum_job && i->checksum_job->state != PULL_JOB_DONE) |
8b71fce8 | 328 | return false; |
dc2c282b | 329 | if (i->signature_job && i->signature_job->state != PULL_JOB_DONE) |
8b71fce8 LP |
330 | return false; |
331 | ||
332 | return true; | |
333 | } | |
334 | ||
dc2c282b LP |
335 | static void raw_pull_job_on_finished(PullJob *j) { |
336 | RawPull *i; | |
8620a9a3 LP |
337 | int r; |
338 | ||
0d6e763b LP |
339 | assert(j); |
340 | assert(j->userdata); | |
8620a9a3 | 341 | |
0d6e763b LP |
342 | i = j->userdata; |
343 | if (j->error != 0) { | |
98c38001 | 344 | if (j == i->checksum_job) |
3576d631 LP |
345 | log_error_errno(j->error, "Failed to retrieve SHA256 checksum, cannot verify. (Try --verify=no?)"); |
346 | else if (j == i->signature_job) | |
347 | log_error_errno(j->error, "Failed to retrieve signature file, cannot verify. (Try --verify=no?)"); | |
348 | else | |
349 | log_error_errno(j->error, "Failed to retrieve image file. (Wrong URL?)"); | |
350 | ||
0d6e763b LP |
351 | r = j->error; |
352 | goto finish; | |
8620a9a3 LP |
353 | } |
354 | ||
0d6e763b LP |
355 | /* This is invoked if either the download completed |
356 | * successfully, or the download was skipped because we | |
85dbc41d | 357 | * already have the etag. In this case ->etag_exists is |
3576d631 LP |
358 | * true. |
359 | * | |
360 | * We only do something when we got all three files */ | |
85dbc41d | 361 | |
dc2c282b | 362 | if (!raw_pull_is_done(i)) |
3576d631 | 363 | return; |
8620a9a3 | 364 | |
3576d631 | 365 | if (!i->raw_job->etag_exists) { |
98c38001 | 366 | /* This is a new download, verify it, and move it into place */ |
3576d631 LP |
367 | assert(i->raw_job->disk_fd >= 0); |
368 | ||
dc2c282b | 369 | raw_pull_report_progress(i, RAW_VERIFYING); |
7079cfef | 370 | |
dc2c282b | 371 | r = pull_verify(i->raw_job, i->checksum_job, i->signature_job); |
0d6e763b LP |
372 | if (r < 0) |
373 | goto finish; | |
8620a9a3 | 374 | |
dc2c282b | 375 | raw_pull_report_progress(i, RAW_UNPACKING); |
7079cfef | 376 | |
dc2c282b | 377 | r = raw_pull_maybe_convert_qcow2(i); |
0d6e763b LP |
378 | if (r < 0) |
379 | goto finish; | |
85dbc41d | 380 | |
dc2c282b | 381 | raw_pull_report_progress(i, RAW_FINALIZING); |
7079cfef | 382 | |
b6e676ce | 383 | r = import_make_read_only_fd(i->raw_job->disk_fd); |
3576d631 LP |
384 | if (r < 0) |
385 | goto finish; | |
85dbc41d | 386 | |
f85ef957 | 387 | r = rename_noreplace(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path); |
3576d631 | 388 | if (r < 0) { |
f85ef957 | 389 | log_error_errno(r, "Failed to move RAW file into place: %m"); |
3576d631 LP |
390 | goto finish; |
391 | } | |
8f695058 | 392 | |
3576d631 LP |
393 | free(i->temp_path); |
394 | i->temp_path = NULL; | |
8620a9a3 LP |
395 | } |
396 | ||
dc2c282b | 397 | raw_pull_report_progress(i, RAW_COPYING); |
7079cfef | 398 | |
dc2c282b | 399 | r = raw_pull_make_local_copy(i); |
8620a9a3 | 400 | if (r < 0) |
0d6e763b | 401 | goto finish; |
90199220 | 402 | |
0d6e763b | 403 | r = 0; |
3576d631 | 404 | |
0d6e763b | 405 | finish: |
3576d631 LP |
406 | if (i->on_finished) |
407 | i->on_finished(i, r, i->userdata); | |
408 | else | |
409 | sd_event_exit(i->event, r); | |
0d6e763b | 410 | } |
90199220 | 411 | |
dc2c282b LP |
412 | static int raw_pull_job_on_open_disk(PullJob *j) { |
413 | RawPull *i; | |
0d6e763b | 414 | int r; |
90199220 | 415 | |
0d6e763b LP |
416 | assert(j); |
417 | assert(j->userdata); | |
90199220 | 418 | |
0d6e763b | 419 | i = j->userdata; |
8b71fce8 LP |
420 | assert(i->raw_job == j); |
421 | assert(!i->final_path); | |
422 | assert(!i->temp_path); | |
90199220 | 423 | |
dc2c282b | 424 | r = pull_make_path(j->url, j->etag, i->image_root, ".raw-", ".raw", &i->final_path); |
0d6e763b LP |
425 | if (r < 0) |
426 | return log_oom(); | |
90199220 | 427 | |
14bcf25c | 428 | r = tempfn_random(i->final_path, NULL, &i->temp_path); |
b6e676ce | 429 | if (r < 0) |
0d6e763b | 430 | return log_oom(); |
1e20b411 | 431 | |
b6e676ce | 432 | (void) mkdir_parents_label(i->temp_path, 0700); |
1e20b411 | 433 | |
b6e676ce | 434 | j->disk_fd = open(i->temp_path, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); |
0d6e763b LP |
435 | if (j->disk_fd < 0) |
436 | return log_error_errno(errno, "Failed to create %s: %m", i->temp_path); | |
1e20b411 | 437 | |
1ed8f8c1 | 438 | r = chattr_fd(j->disk_fd, FS_NOCOW_FL, FS_NOCOW_FL); |
90199220 | 439 | if (r < 0) |
0d6e763b | 440 | log_warning_errno(errno, "Failed to set file attributes on %s: %m", i->temp_path); |
90199220 LP |
441 | |
442 | return 0; | |
443 | } | |
444 | ||
dc2c282b LP |
445 | static void raw_pull_job_on_progress(PullJob *j) { |
446 | RawPull *i; | |
7079cfef LP |
447 | |
448 | assert(j); | |
449 | assert(j->userdata); | |
450 | ||
451 | i = j->userdata; | |
452 | ||
dc2c282b | 453 | raw_pull_report_progress(i, RAW_DOWNLOADING); |
7079cfef LP |
454 | } |
455 | ||
dc2c282b | 456 | int raw_pull_start(RawPull *i, const char *url, const char *local, bool force_local, ImportVerify verify) { |
90199220 LP |
457 | int r; |
458 | ||
0d6e763b | 459 | assert(i); |
8f695058 LP |
460 | assert(verify < _IMPORT_VERIFY_MAX); |
461 | assert(verify >= 0); | |
90199220 | 462 | |
0d6e763b LP |
463 | if (!http_url_is_valid(url)) |
464 | return -EINVAL; | |
90199220 | 465 | |
0d6e763b LP |
466 | if (local && !machine_name_is_valid(local)) |
467 | return -EINVAL; | |
087682d1 | 468 | |
8b71fce8 LP |
469 | if (i->raw_job) |
470 | return -EBUSY; | |
471 | ||
0d6e763b | 472 | r = free_and_strdup(&i->local, local); |
90199220 LP |
473 | if (r < 0) |
474 | return r; | |
0d6e763b | 475 | i->force_local = force_local; |
8f695058 | 476 | i->verify = verify; |
90199220 | 477 | |
85dbc41d | 478 | /* Queue job for the image itself */ |
dc2c282b | 479 | r = pull_job_new(&i->raw_job, url, i->glue, i); |
90199220 LP |
480 | if (r < 0) |
481 | return r; | |
482 | ||
dc2c282b LP |
483 | i->raw_job->on_finished = raw_pull_job_on_finished; |
484 | i->raw_job->on_open_disk = raw_pull_job_on_open_disk; | |
485 | i->raw_job->on_progress = raw_pull_job_on_progress; | |
98c38001 | 486 | i->raw_job->calc_checksum = verify != IMPORT_VERIFY_NO; |
26166c88 | 487 | i->raw_job->grow_machine_directory = i->grow_machine_directory; |
90199220 | 488 | |
dc2c282b | 489 | r = pull_find_old_etags(url, i->image_root, DT_REG, ".raw-", ".raw", &i->raw_job->old_etags); |
90199220 LP |
490 | if (r < 0) |
491 | return r; | |
492 | ||
dc2c282b | 493 | r = pull_make_verification_jobs(&i->checksum_job, &i->signature_job, verify, url, i->glue, raw_pull_job_on_finished, i); |
98c38001 LP |
494 | if (r < 0) |
495 | return r; | |
85dbc41d | 496 | |
dc2c282b | 497 | r = pull_job_begin(i->raw_job); |
85dbc41d LP |
498 | if (r < 0) |
499 | return r; | |
500 | ||
98c38001 | 501 | if (i->checksum_job) { |
dc2c282b | 502 | i->checksum_job->on_progress = raw_pull_job_on_progress; |
7079cfef | 503 | |
dc2c282b | 504 | r = pull_job_begin(i->checksum_job); |
3576d631 LP |
505 | if (r < 0) |
506 | return r; | |
507 | } | |
508 | ||
509 | if (i->signature_job) { | |
dc2c282b | 510 | i->signature_job->on_progress = raw_pull_job_on_progress; |
7079cfef | 511 | |
dc2c282b | 512 | r = pull_job_begin(i->signature_job); |
3576d631 LP |
513 | if (r < 0) |
514 | return r; | |
515 | } | |
516 | ||
85dbc41d | 517 | return 0; |
90199220 | 518 | } |