1 /*-
2 * Copyright (c) 2010-2012 Aleksandr Rybalko
3 * Copyright (c) 2004 Max Khon
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 /*
29 * GEOM UNCOMPRESS module - simple decompression module for use with read-only
30 * copressed images maked by mkuzip(8) or mkulzma(8) utilities.
31 *
32 * To enable module in kernel config, put this line:
33 * device geom_uncompress
34 */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD: releng/10.0/sys/geom/uncompress/g_uncompress.c 239790 2012-08-28 19:28:31Z ed $");
38
39 #include <sys/param.h>
40 #include <sys/bio.h>
41 #include <sys/endian.h>
42 #include <sys/errno.h>
43 #include <sys/kernel.h>
44 #include <sys/lock.h>
45 #include <sys/mutex.h>
46 #include <sys/malloc.h>
47 #include <sys/systm.h>
48
49 #include <geom/geom.h>
50
51 #include <net/zlib.h>
52 #include <contrib/xz-embedded/linux/include/linux/xz.h>
53
54 #ifdef GEOM_UNCOMPRESS_DEBUG
55 #define DPRINTF(a) printf a
56 extern int g_debugflags;
57 #else
58 #define DPRINTF(a)
59 #endif
60
61 static MALLOC_DEFINE(M_GEOM_UNCOMPRESS, "geom_uncompress",
62 "GEOM UNCOMPRESS data structures");
63
64 #define UNCOMPRESS_CLASS_NAME "UNCOMPRESS"
65 #define GEOM_UZIP_MAJVER '2'
66 #define GEOM_ULZMA_MAJVER '3'
67
68 /*
69 * Maximum allowed valid block size (to prevent foot-shooting)
70 */
71 #define MAX_BLKSZ (MAXPHYS)
72
73 /*
74 * Integer values (block size, number of blocks, offsets)
75 * are stored in big-endian (network) order on disk and struct cloop_header
76 * and in native order in struct g_uncompress_softc
77 */
78
79 #define CLOOP_MAGIC_LEN 128
80 static char CLOOP_MAGIC_START[] = "#!/bin/sh\n";
81
82 struct cloop_header {
83 char magic[CLOOP_MAGIC_LEN]; /* cloop magic */
84 uint32_t blksz; /* block size */
85 uint32_t nblocks; /* number of blocks */
86 };
87
88 struct g_uncompress_softc {
89 uint32_t blksz; /* block size */
90 uint32_t nblocks; /* number of blocks */
91 uint64_t *offsets;
92 enum {
93 GEOM_UZIP = 1,
94 GEOM_ULZMA
95 } type;
96
97 struct mtx last_mtx;
98 uint32_t last_blk; /* last blk no */
99 char *last_buf; /* last blk data */
100 int req_total; /* total requests */
101 int req_cached; /* cached requests */
102
103 /* XZ decoder structs */
104 struct xz_buf *b;
105 struct xz_dec *s;
106 z_stream *zs;
107 };
108
109 static void
110 g_uncompress_softc_free(struct g_uncompress_softc *sc, struct g_geom *gp)
111 {
112
113 if (gp != NULL) {
114 printf("%s: %d requests, %d cached\n",
115 gp->name, sc->req_total, sc->req_cached);
116 }
117 if (sc->offsets != NULL) {
118 free(sc->offsets, M_GEOM_UNCOMPRESS);
119 sc->offsets = 0;
120 }
121
122 switch (sc->type) {
123 case GEOM_ULZMA:
124 if (sc->b) {
125 free(sc->b, M_GEOM_UNCOMPRESS);
126 sc->b = 0;
127 }
128 if (sc->s) {
129 xz_dec_end(sc->s);
130 sc->s = 0;
131 }
132 break;
133 case GEOM_UZIP:
134 if (sc->zs) {
135 inflateEnd(sc->zs);
136 free(sc->zs, M_GEOM_UNCOMPRESS);
137 sc->zs = 0;
138 }
139 break;
140 }
141
142 mtx_destroy(&sc->last_mtx);
143 free(sc->last_buf, M_GEOM_UNCOMPRESS);
144 free(sc, M_GEOM_UNCOMPRESS);
145 }
146
147 static void *
148 z_alloc(void *nil, u_int type, u_int size)
149 {
150 void *ptr;
151
152 ptr = malloc(type * size, M_GEOM_UNCOMPRESS, M_NOWAIT);
153 return (ptr);
154 }
155
156 static void
157 z_free(void *nil, void *ptr)
158 {
159
160 free(ptr, M_GEOM_UNCOMPRESS);
161 }
162
163 static void
164 g_uncompress_done(struct bio *bp)
165 {
166 struct g_uncompress_softc *sc;
167 struct g_provider *pp, *pp2;
168 struct g_consumer *cp;
169 struct g_geom *gp;
170 struct bio *bp2;
171 uint32_t start_blk, i;
172 off_t pos, upos;
173 size_t bsize;
174 int err;
175
176 err = 0;
177 bp2 = bp->bio_parent;
178 pp = bp2->bio_to;
179 gp = pp->geom;
180 cp = LIST_FIRST(&gp->consumer);
181 pp2 = cp->provider;
182 sc = gp->softc;
183 DPRINTF(("%s: done\n", gp->name));
184
185 bp2->bio_error = bp->bio_error;
186 if (bp2->bio_error != 0)
187 goto done;
188
189 /*
190 * Example:
191 * Uncompressed block size = 65536
192 * User request: 65540-261632
193 * (4 uncompressed blocks -4B at start, -512B at end)
194 *
195 * We have 512(secsize)*63(nsec) = 32256B at offset 1024
196 * From: 1024 bp->bio_offset = 1024
197 * To: 33280 bp->bio_length = 33280 - 1024 = 32256
198 * Compressed blocks: 0-1020, 1020-1080, 1080-4845, 4845-12444,
199 * 12444-33210, 33210-44100, ...
200 *
201 * Get start_blk from user request:
202 * start_blk = bp2->bio_offset / 65536 = 65540/65536 = 1
203 * bsize (block size of parent) = pp2->sectorsize (Now is 4B)
204 * pos(in stream from parent) = sc->offsets[start_blk] % bsize =
205 * = sc->offsets[1] % 4 = 1020 % 4 = 0
206 */
207
208 /*
209 * Uncompress data.
210 */
211 start_blk = bp2->bio_offset / sc->blksz;
212 bsize = pp2->sectorsize;
213 pos = sc->offsets[start_blk] % bsize;
214 upos = 0;
215
216 DPRINTF(("%s: done: bio_length %lld bio_completed %lld start_blk %d, "
217 "pos %lld, upos %lld (%lld, %d, %d)\n",
218 gp->name, bp->bio_length, bp->bio_completed, start_blk, pos, upos,
219 bp2->bio_offset, sc->blksz, bsize));
220
221 for (i = start_blk; upos < bp2->bio_length; i++) {
222 off_t len, dlen, ulen, uoff;
223
224 uoff = i == start_blk ? bp2->bio_offset % sc->blksz : 0;
225 ulen = MIN(sc->blksz - uoff, bp2->bio_length - upos);
226 dlen = len = sc->offsets[i + 1] - sc->offsets[i];
227
228 DPRINTF(("%s: done: inflate block %d, start %lld, end %lld "
229 "len %lld\n",
230 gp->name, i, sc->offsets[i], sc->offsets[i + 1], len));
231
232 if (len == 0) {
233 /* All zero block: no cache update */
234 bzero(bp2->bio_data + upos, ulen);
235 upos += ulen;
236 bp2->bio_completed += ulen;
237 continue;
238 }
239
240 mtx_lock(&sc->last_mtx);
241
242 #ifdef GEOM_UNCOMPRESS_DEBUG
243 if (g_debugflags & 32)
244 hexdump(bp->bio_data + pos, dlen, 0, 0);
245 #endif
246
247 switch (sc->type) {
248 case GEOM_ULZMA:
249 sc->b->in = bp->bio_data + pos;
250 sc->b->out = sc->last_buf;
251 sc->b->in_pos = sc->b->out_pos = 0;
252 sc->b->in_size = dlen;
253 sc->b->out_size = (size_t)-1;
254
255 err = (xz_dec_run(sc->s, sc->b) != XZ_STREAM_END) ?
256 1 : 0;
257 /* TODO decoder recovery, if needed */
258 break;
259 case GEOM_UZIP:
260 sc->zs->next_in = bp->bio_data + pos;
261 sc->zs->avail_in = dlen;
262 sc->zs->next_out = sc->last_buf;
263 sc->zs->avail_out = sc->blksz;
264
265 err = (inflate(sc->zs, Z_FINISH) != Z_STREAM_END) ?
266 1 : 0;
267 if ((err) && (inflateReset(sc->zs) != Z_OK))
268 printf("%s: UZIP decoder reset failed\n",
269 gp->name);
270 break;
271 }
272
273 if (err) {
274 sc->last_blk = -1;
275 mtx_unlock(&sc->last_mtx);
276 DPRINTF(("%s: done: inflate failed, code=%d\n",
277 gp->name, err));
278 bp2->bio_error = EIO;
279 goto done;
280 }
281
282 #ifdef GEOM_UNCOMPRESS_DEBUG
283 if (g_debugflags & 32)
284 hexdump(sc->last_buf, sc->b->out_size, 0, 0);
285 #endif
286
287 sc->last_blk = i;
288 DPRINTF(("%s: done: inflated \n", gp->name));
289 memcpy(bp2->bio_data + upos, sc->last_buf + uoff, ulen);
290 mtx_unlock(&sc->last_mtx);
291
292 pos += len;
293 upos += ulen;
294 bp2->bio_completed += ulen;
295 }
296
297 done:
298 /*
299 * Finish processing the request.
300 */
301 DPRINTF(("%s: done: (%d, %lld, %ld)\n",
302 gp->name, bp2->bio_error, bp2->bio_completed, bp2->bio_resid));
303 free(bp->bio_data, M_GEOM_UNCOMPRESS);
304 g_destroy_bio(bp);
305 g_io_deliver(bp2, bp2->bio_error);
306 }
307
308 static void
309 g_uncompress_start(struct bio *bp)
310 {
311 struct g_uncompress_softc *sc;
312 struct g_provider *pp, *pp2;
313 struct g_consumer *cp;
314 struct g_geom *gp;
315 struct bio *bp2;
316 uint32_t start_blk, end_blk;
317 size_t bsize;
318
319
320 pp = bp->bio_to;
321 gp = pp->geom;
322 DPRINTF(("%s: start (%s) to %s off=%lld len=%lld\n", gp->name,
323 (bp->bio_cmd==BIO_READ) ? "BIO_READ" : "BIO_WRITE*",
324 pp->name, bp->bio_offset, bp->bio_length));
325
326 if (bp->bio_cmd != BIO_READ) {
327 g_io_deliver(bp, EOPNOTSUPP);
328 return;
329 }
330
331 cp = LIST_FIRST(&gp->consumer);
332 pp2 = cp->provider;
333 sc = gp->softc;
334
335 start_blk = bp->bio_offset / sc->blksz;
336 end_blk = howmany(bp->bio_offset + bp->bio_length, sc->blksz);
337 KASSERT(start_blk < sc->nblocks,
338 ("start_blk out of range"));
339 KASSERT(end_blk <= sc->nblocks,
340 ("end_blk out of range"));
341
342 sc->req_total++;
343 if (start_blk + 1 == end_blk) {
344 mtx_lock(&sc->last_mtx);
345 if (start_blk == sc->last_blk) {
346 off_t uoff;
347
348 uoff = bp->bio_offset % sc->blksz;
349 KASSERT(bp->bio_length <= sc->blksz - uoff,
350 ("cached data error"));
351 memcpy(bp->bio_data, sc->last_buf + uoff,
352 bp->bio_length);
353 sc->req_cached++;
354 mtx_unlock(&sc->last_mtx);
355
356 DPRINTF(("%s: start: cached 0 + %lld, "
357 "%lld + 0 + %lld\n",
358 gp->name, bp->bio_length, uoff, bp->bio_length));
359 bp->bio_completed = bp->bio_length;
360 g_io_deliver(bp, 0);
361 return;
362 }
363 mtx_unlock(&sc->last_mtx);
364 }
365
366 bp2 = g_clone_bio(bp);
367 if (bp2 == NULL) {
368 g_io_deliver(bp, ENOMEM);
369 return;
370 }
371 DPRINTF(("%s: start (%d..%d), %s: %d + %llu, %s: %d + %llu\n",
372 gp->name, start_blk, end_blk,
373 pp->name, pp->sectorsize, pp->mediasize,
374 pp2->name, pp2->sectorsize, pp2->mediasize));
375
376 bsize = pp2->sectorsize;
377
378 bp2->bio_done = g_uncompress_done;
379 bp2->bio_offset = rounddown(sc->offsets[start_blk],bsize);
380 bp2->bio_length = roundup(sc->offsets[end_blk],bsize) -
381 bp2->bio_offset;
382 bp2->bio_data = malloc(bp2->bio_length, M_GEOM_UNCOMPRESS, M_NOWAIT);
383
384 DPRINTF(("%s: start %lld + %lld -> %lld + %lld -> %lld + %lld\n",
385 gp->name,
386 bp->bio_offset, bp->bio_length,
387 sc->offsets[start_blk],
388 sc->offsets[end_blk] - sc->offsets[start_blk],
389 bp2->bio_offset, bp2->bio_length));
390
391 if (bp2->bio_data == NULL) {
392 g_destroy_bio(bp2);
393 g_io_deliver(bp, ENOMEM);
394 return;
395 }
396
397 g_io_request(bp2, cp);
398 DPRINTF(("%s: start ok\n", gp->name));
399 }
400
401 static void
402 g_uncompress_orphan(struct g_consumer *cp)
403 {
404 struct g_geom *gp;
405
406 g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp,
407 cp->provider->name);
408 g_topology_assert();
409
410 gp = cp->geom;
411 g_uncompress_softc_free(gp->softc, gp);
412 gp->softc = NULL;
413 g_wither_geom(gp, ENXIO);
414 }
415
416 static int
417 g_uncompress_access(struct g_provider *pp, int dr, int dw, int de)
418 {
419 struct g_consumer *cp;
420 struct g_geom *gp;
421
422 gp = pp->geom;
423 cp = LIST_FIRST(&gp->consumer);
424 KASSERT (cp != NULL, ("g_uncompress_access but no consumer"));
425
426 if (cp->acw + dw > 0)
427 return (EROFS);
428
429 return (g_access(cp, dr, dw, de));
430 }
431
432 static void
433 g_uncompress_spoiled(struct g_consumer *cp)
434 {
435 struct g_geom *gp;
436
437 gp = cp->geom;
438 g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp, gp->name);
439 g_topology_assert();
440
441 g_uncompress_softc_free(gp->softc, gp);
442 gp->softc = NULL;
443 g_wither_geom(gp, ENXIO);
444 }
445
446 static struct g_geom *
447 g_uncompress_taste(struct g_class *mp, struct g_provider *pp, int flags)
448 {
449 struct cloop_header *header;
450 struct g_uncompress_softc *sc;
451 struct g_provider *pp2;
452 struct g_consumer *cp;
453 struct g_geom *gp;
454 uint32_t i, total_offsets, offsets_read, type;
455 uint8_t *buf;
456 int error;
457
458 g_trace(G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name);
459 g_topology_assert();
460
461 /* Skip providers that are already open for writing. */
462 if (pp->acw > 0)
463 return (NULL);
464
465 buf = NULL;
466
467 /*
468 * Create geom instance.
469 */
470 gp = g_new_geomf(mp, "%s.uncompress", pp->name);
471 cp = g_new_consumer(gp);
472 error = g_attach(cp, pp);
473 if (error == 0)
474 error = g_access(cp, 1, 0, 0);
475 if (error) {
476 g_detach(cp);
477 g_destroy_consumer(cp);
478 g_destroy_geom(gp);
479 return (NULL);
480 }
481 g_topology_unlock();
482
483 /*
484 * Read cloop header, look for CLOOP magic, perform
485 * other validity checks.
486 */
487 DPRINTF(("%s: media sectorsize %u, mediasize %lld\n",
488 gp->name, pp->sectorsize, pp->mediasize));
489
490 i = roundup(sizeof(struct cloop_header), pp->sectorsize);
491 buf = g_read_data(cp, 0, i, NULL);
492 if (buf == NULL)
493 goto err;
494
495 header = (struct cloop_header *) buf;
496 if (strncmp(header->magic, CLOOP_MAGIC_START,
497 sizeof(CLOOP_MAGIC_START) - 1) != 0) {
498 DPRINTF(("%s: no CLOOP magic\n", gp->name));
499 goto err;
500 }
501
502 switch (header->magic[0x0b]) {
503 case 'L':
504 type = GEOM_ULZMA;
505 if (header->magic[0x0c] < GEOM_ULZMA_MAJVER) {
506 DPRINTF(("%s: image version too old\n", gp->name));
507 goto err;
508 }
509 printf("%s: GEOM_ULZMA image found\n", gp->name);
510 break;
511 case 'V':
512 type = GEOM_UZIP;
513 if (header->magic[0x0c] < GEOM_UZIP_MAJVER) {
514 DPRINTF(("%s: image version too old\n", gp->name));
515 goto err;
516 }
517 printf("%s: GEOM_UZIP image found\n", gp->name);
518 break;
519 default:
520 DPRINTF(("%s: unsupported image type\n", gp->name));
521 goto err;
522 }
523
524 DPRINTF(("%s: found CLOOP magic\n", gp->name));
525 /*
526 * Initialize softc and read offsets.
527 */
528 sc = malloc(sizeof(*sc), M_GEOM_UNCOMPRESS, M_WAITOK | M_ZERO);
529 gp->softc = sc;
530 sc->type = type;
531 sc->blksz = ntohl(header->blksz);
532 sc->nblocks = ntohl(header->nblocks);
533 if (sc->blksz % 4 != 0) {
534 printf("%s: block size (%u) should be multiple of 4.\n",
535 gp->name, sc->blksz);
536 goto err;
537 }
538 if (sc->blksz > MAX_BLKSZ) {
539 printf("%s: block size (%u) should not be larger than %d.\n",
540 gp->name, sc->blksz, MAX_BLKSZ);
541 }
542 total_offsets = sc->nblocks + 1;
543 if (sizeof(struct cloop_header) +
544 total_offsets * sizeof(uint64_t) > pp->mediasize) {
545 printf("%s: media too small for %u blocks\n",
546 gp->name, sc->nblocks);
547 goto err;
548 }
549 sc->offsets = malloc(
550 total_offsets * sizeof(uint64_t), M_GEOM_UNCOMPRESS, M_WAITOK);
551 offsets_read = MIN(total_offsets,
552 (pp->sectorsize - sizeof(*header)) / sizeof(uint64_t));
553 for (i = 0; i < offsets_read; i++)
554 sc->offsets[i] = be64toh(((uint64_t *) (header + 1))[i]);
555 DPRINTF(("%s: %u offsets in the first sector\n",
556 gp->name, offsets_read));
557
558 free(buf, M_GEOM);
559 i = roundup((sizeof(struct cloop_header) +
560 total_offsets * sizeof(uint64_t)),pp->sectorsize);
561 buf = g_read_data(cp, 0, i, NULL);
562 if (buf == NULL)
563 goto err;
564 for (i = 0; i <= total_offsets; i++) {
565 sc->offsets[i] = be64toh(((uint64_t *)
566 (buf+sizeof(struct cloop_header)))[i]);
567 }
568 DPRINTF(("%s: done reading offsets\n", gp->name));
569 mtx_init(&sc->last_mtx, "geom_uncompress cache", NULL, MTX_DEF);
570 sc->last_blk = -1;
571 sc->last_buf = malloc(sc->blksz, M_GEOM_UNCOMPRESS, M_WAITOK);
572 sc->req_total = 0;
573 sc->req_cached = 0;
574
575 switch (sc->type) {
576 case GEOM_ULZMA:
577 xz_crc32_init();
578 sc->s = xz_dec_init(XZ_SINGLE, 0);
579 sc->b = (struct xz_buf*)malloc(sizeof(struct xz_buf),
580 M_GEOM_UNCOMPRESS, M_WAITOK);
581 break;
582 case GEOM_UZIP:
583 sc->zs = (z_stream *)malloc(sizeof(z_stream),
584 M_GEOM_UNCOMPRESS, M_WAITOK);
585 sc->zs->zalloc = z_alloc;
586 sc->zs->zfree = z_free;
587 if (inflateInit(sc->zs) != Z_OK) {
588 goto err;
589 }
590 break;
591 }
592
593 g_topology_lock();
594 pp2 = g_new_providerf(gp, "%s", gp->name);
595 pp2->sectorsize = 512;
596 pp2->mediasize = (off_t)sc->nblocks * sc->blksz;
597 if (pp->stripesize > 0) {
598 pp2->stripesize = pp->stripesize;
599 pp2->stripeoffset = pp->stripeoffset;
600 }
601 g_error_provider(pp2, 0);
602 free(buf, M_GEOM);
603 g_access(cp, -1, 0, 0);
604
605 DPRINTF(("%s: taste ok (%d, %lld), (%d, %d), %x\n",
606 gp->name,
607 pp2->sectorsize, pp2->mediasize,
608 pp2->stripeoffset, pp2->stripesize, pp2->flags));
609 printf("%s: %u x %u blocks\n",
610 gp->name, sc->nblocks, sc->blksz);
611 return (gp);
612
613 err:
614 g_topology_lock();
615 g_access(cp, -1, 0, 0);
616 if (buf != NULL)
617 free(buf, M_GEOM);
618 if (gp->softc != NULL) {
619 g_uncompress_softc_free(gp->softc, NULL);
620 gp->softc = NULL;
621 }
622 g_detach(cp);
623 g_destroy_consumer(cp);
624 g_destroy_geom(gp);
625 return (NULL);
626 }
627
628 static int
629 g_uncompress_destroy_geom(struct gctl_req *req, struct g_class *mp,
630 struct g_geom *gp)
631 {
632 struct g_provider *pp;
633
634 g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, gp->name);
635 g_topology_assert();
636
637 if (gp->softc == NULL) {
638 printf("%s(%s): gp->softc == NULL\n", __func__, gp->name);
639 return (ENXIO);
640 }
641
642 KASSERT(gp != NULL, ("NULL geom"));
643 pp = LIST_FIRST(&gp->provider);
644 KASSERT(pp != NULL, ("NULL provider"));
645 if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0)
646 return (EBUSY);
647
648 g_uncompress_softc_free(gp->softc, gp);
649 gp->softc = NULL;
650 g_wither_geom(gp, ENXIO);
651 return (0);
652 }
653
654 static struct g_class g_uncompress_class = {
655 .name = UNCOMPRESS_CLASS_NAME,
656 .version = G_VERSION,
657 .taste = g_uncompress_taste,
658 .destroy_geom = g_uncompress_destroy_geom,
659
660 .start = g_uncompress_start,
661 .orphan = g_uncompress_orphan,
662 .access = g_uncompress_access,
663 .spoiled = g_uncompress_spoiled,
664 };
665
666 DECLARE_GEOM_CLASS(g_uncompress_class, g_uncompress);
667
Cache object: 6b8d7a48282ffbacfa51eb64ddc79490
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