Obsolete mkulzma(8) and geom_uncompress(4), their functionality

is now provided by mkuzip(8) and geom_uzip(4) respectively.

MFC after:	1 month

1 files changed, 0 insertions, 684 deletions

diff --git a/sys/geom/uncompress/g_uncompress.c b/sys/geom/uncompress/g_uncompress.c
deleted file mode 100644
index 1a83cda..0000000
--- a/sys/geom/uncompress/g_uncompress.c
+++ /dev/null
@@ -1,684 +0,0 @@
-/*-
- * Copyright (c) 2010-2012 Aleksandr Rybalko
- * Copyright (c) 2004 Max Khon
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * GEOM UNCOMPRESS module - simple decompression module for use with read-only
- * copressed images maked by mkuzip(8) or mkulzma(8) utilities.
- *
- * To enable module in kernel config, put this line:
- * device	geom_uncompress
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/bio.h>
-#include <sys/endian.h>
-#include <sys/errno.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/mutex.h>
-#include <sys/malloc.h>
-#include <sys/systm.h>
-#include <sys/zlib.h>
-
-#include <geom/geom.h>
-
-#include <contrib/xz-embedded/linux/include/linux/xz.h>
-
-#ifdef GEOM_UNCOMPRESS_DEBUG
-#define	DPRINTF(a)	printf a
-extern int g_debugflags;
-#else
-#define	DPRINTF(a)
-#endif
-
-static MALLOC_DEFINE(M_GEOM_UNCOMPRESS, "geom_uncompress",
-    "GEOM UNCOMPRESS data structures");
-
-#define	UNCOMPRESS_CLASS_NAME	"UNCOMPRESS"
-#define	GEOM_UZIP_MAJVER '2'
-#define	GEOM_ULZMA_MAJVER '3'
-
-/*
- * Maximum allowed valid block size (to prevent foot-shooting)
- */
-#define	MAX_BLKSZ	(MAXPHYS)
-
-/*
- * Integer values (block size, number of blocks, offsets)
- * are stored in big-endian (network) order on disk and struct cloop_header
- * and in native order in struct g_uncompress_softc
- */
-
-#define	CLOOP_MAGIC_LEN	128
-static char CLOOP_MAGIC_START[] = "#!/bin/sh\n";
-
-struct cloop_header {
-	char magic[CLOOP_MAGIC_LEN];	/* cloop magic */
-	uint32_t blksz;			/* block size */
-	uint32_t nblocks;		/* number of blocks */
-};
-
-struct g_uncompress_softc {
-	uint32_t blksz;			/* block size */
-	uint32_t nblocks;		/* number of blocks */
-	uint64_t *offsets;
-	enum {
-		GEOM_UZIP = 1,
-		GEOM_ULZMA
-	} type;
-
-	struct mtx last_mtx;
-	uint32_t last_blk;		/* last blk no */
-	char *last_buf;			/* last blk data */
-	int req_total;			/* total requests */
-	int req_cached;			/* cached requests */
-
-	/* XZ decoder structs */
-	struct xz_buf *b;
-	struct xz_dec *s;
-	z_stream *zs;
-};
-
-static void
-g_uncompress_softc_free(struct g_uncompress_softc *sc, struct g_geom *gp)
-{
-
-	if (gp != NULL) {
-		DPRINTF(("%s: %d requests, %d cached\n",
-		    gp->name, sc->req_total, sc->req_cached));
-	}
-	if (sc->offsets != NULL) {
-		free(sc->offsets, M_GEOM_UNCOMPRESS);
-		sc->offsets = NULL;
-	}
-
-	switch (sc->type) {
-	case GEOM_ULZMA:
-		if (sc->b) {
-			free(sc->b, M_GEOM_UNCOMPRESS);
-			sc->b = 0;
-		}
-		if (sc->s) {
-			xz_dec_end(sc->s);
-			sc->s = 0;
-		}
-		break;
-	case GEOM_UZIP:
-		if (sc->zs) {
-			inflateEnd(sc->zs);
-			free(sc->zs, M_GEOM_UNCOMPRESS);
-			sc->zs = 0;
-		}
-		break;
-	}
-
-	mtx_destroy(&sc->last_mtx);
-	free(sc->last_buf, M_GEOM_UNCOMPRESS);
-	free(sc, M_GEOM_UNCOMPRESS);
-}
-
-static void *
-z_alloc(void *nil, u_int type, u_int size)
-{
-	void *ptr;
-
-	ptr = malloc(type * size, M_GEOM_UNCOMPRESS, M_NOWAIT);
-
-	return (ptr);
-}
-
-static void
-z_free(void *nil, void *ptr)
-{
-
-	free(ptr, M_GEOM_UNCOMPRESS);
-}
-
-static void
-g_uncompress_done(struct bio *bp)
-{
-	struct g_uncompress_softc *sc;
-	struct g_provider *pp, *pp2;
-	struct g_consumer *cp;
-	struct g_geom *gp;
-	struct bio *bp2;
-	uint32_t start_blk, i;
-	off_t iolen, pos, upos;
-	size_t bsize;
-	int err;
-
-	err = 0;
-	bp2 = bp->bio_parent;
-	pp = bp2->bio_to;
-	gp = pp->geom;
-	cp = LIST_FIRST(&gp->consumer);
-	pp2 = cp->provider;
-	sc = gp->softc;
-	DPRINTF(("%s: done\n", gp->name));
-
-	bp2->bio_error = bp->bio_error;
-	if (bp2->bio_error != 0)
-		goto done;
-
-	/*
-	 * Example:
-	 * Uncompressed block size = 65536
-	 * User request: 65540-261632
-	 * (4 uncompressed blocks -4B at start, -512B at end)
-	 *
-	 * We have 512(secsize)*63(nsec) = 32256B at offset 1024
-	 * From:  1024  bp->bio_offset = 1024
-	 * To:   33280  bp->bio_length = 33280 - 1024 = 32256
-	 * Compressed blocks: 0-1020, 1020-1080, 1080-4845, 4845-12444,
-	 * 	12444-33210, 33210-44100, ...
-	 *
-	 * Get start_blk from user request:
-	 * start_blk = bp2->bio_offset / 65536 = 65540/65536 = 1
-	 * bsize (block size of parent) = pp2->sectorsize (Now is 4B)
-	 * pos(in stream from parent) = sc->offsets[start_blk] % bsize =
-	 *    = sc->offsets[1] % 4 = 1020 % 4 = 0
-	 */
-
-	/*
-	 * Uncompress data.
-	 */
-	start_blk = bp2->bio_offset / sc->blksz;
-	bsize = pp2->sectorsize;
-	iolen = bp->bio_completed;
-	pos = sc->offsets[start_blk] % bsize;
-	upos = 0;
-
-	DPRINTF(("%s: done: bio_length %jd bio_completed %jd start_blk %d, "
-	    "pos %jd, upos %jd (%jd, %d, %zu)\n",
-	    gp->name, (intmax_t)bp->bio_length, (intmax_t)bp->bio_completed,
-	    start_blk, (intmax_t)pos, (intmax_t)upos,
-	    (intmax_t)bp2->bio_offset, sc->blksz, bsize));
-
-	for (i = start_blk; upos < bp2->bio_length; i++) {
-		off_t len, ulen, uoff;
-
-		uoff = i == start_blk ? bp2->bio_offset % sc->blksz : 0;
-		ulen = MIN(sc->blksz - uoff, bp2->bio_length - upos);
-		len = sc->offsets[i + 1] - sc->offsets[i];
-
-		DPRINTF((
-		    "%s: done: inflate block %d, start %ju, end %ju len %jd\n",
-		    gp->name, i, (uintmax_t)sc->offsets[i],
-		    (uintmax_t)sc->offsets[i + 1], (intmax_t)len));
-
-		if (len == 0) {
-			/* All zero block: no cache update */
-			bzero(bp2->bio_data + upos, ulen);
-			upos += ulen;
-			bp2->bio_completed += ulen;
-			continue;
-		}
-		if (len > iolen) {
-			DPRINTF(("%s: done: early termination: len (%jd) > "
-			    "iolen (%jd)\n",
-			    gp->name, (intmax_t)len, (intmax_t)iolen));
-			break;
-		}
-		mtx_lock(&sc->last_mtx);
-
-#ifdef GEOM_UNCOMPRESS_DEBUG
-		if (g_debugflags & 32)
-			hexdump(bp->bio_data + pos, len, 0, 0);
-#endif
-
-		switch (sc->type) {
-		case GEOM_ULZMA:
-			sc->b->in = bp->bio_data + pos;
-			sc->b->out = sc->last_buf;
-			sc->b->in_pos = sc->b->out_pos = 0;
-			sc->b->in_size = len;
-			sc->b->out_size = (size_t)-1;
-
-			err = (xz_dec_run(sc->s, sc->b) != XZ_STREAM_END) ?
-			    1 : 0;
-			/* TODO decoder recovery, if needed */
-			break;
-		case GEOM_UZIP:
-			sc->zs->next_in = bp->bio_data + pos;
-			sc->zs->avail_in = len;
-			sc->zs->next_out = sc->last_buf;
-			sc->zs->avail_out = sc->blksz;
-
-			err = (inflate(sc->zs, Z_FINISH) != Z_STREAM_END) ?
-			    1 : 0;
-			if ((err) || (inflateReset(sc->zs) != Z_OK))
-				printf("%s: UZIP decoder reset failed\n",
-				     gp->name);
-			break;
-		}
-
-		if (err) {
-			sc->last_blk = -1;
-			mtx_unlock(&sc->last_mtx);
-			DPRINTF(("%s: done: inflate failed, code=%d\n",
-			    gp->name, err));
-			bp2->bio_error = EIO;
-			goto done;
-		}
-
-#ifdef GEOM_UNCOMPRESS_DEBUG
-		if (g_debugflags & 32)
-			hexdump(sc->last_buf, sc->b->out_size, 0, 0);
-#endif
-
-		sc->last_blk = i;
-		DPRINTF(("%s: done: inflated \n", gp->name));
-		memcpy(bp2->bio_data + upos, sc->last_buf + uoff, ulen);
-		mtx_unlock(&sc->last_mtx);
-
-		pos += len;
-		iolen -= len;
-		upos += ulen;
-		bp2->bio_completed += ulen;
-	}
-
-done:
-	/*
-	 * Finish processing the request.
-	 */
-	DPRINTF(("%s: done: (%d, %jd, %ld)\n",
-	    gp->name, bp2->bio_error, (intmax_t)bp2->bio_completed,
-	    bp2->bio_resid));
-	free(bp->bio_data, M_GEOM_UNCOMPRESS);
-	g_destroy_bio(bp);
-	g_io_deliver(bp2, bp2->bio_error);
-}
-
-static void
-g_uncompress_start(struct bio *bp)
-{
-	struct g_uncompress_softc *sc;
-	struct g_provider *pp, *pp2;
-	struct g_consumer *cp;
-	struct g_geom *gp;
-	struct bio *bp2;
-	uint32_t start_blk, end_blk;
-	size_t bsize;
-
-	pp = bp->bio_to;
-	gp = pp->geom;
-	DPRINTF(("%s: start (%d:%s) to %s off=%jd len=%jd\n",
-	    gp->name, bp->bio_cmd,
-	    (bp->bio_cmd == BIO_READ) ? "BIO_READ" : "NOTSUPPORTED",
-	    pp->name, (intmax_t)bp->bio_offset, (intmax_t)bp->bio_length));
-
-	if (bp->bio_cmd != BIO_READ) {
-		g_io_deliver(bp, EOPNOTSUPP);
-		return;
-	}
-
-	cp = LIST_FIRST(&gp->consumer);
-	pp2 = cp->provider;
-	sc = gp->softc;
-
-	start_blk = bp->bio_offset / sc->blksz;
-	end_blk   = howmany(bp->bio_offset + bp->bio_length, sc->blksz);
-	KASSERT(start_blk < sc->nblocks, ("start_blk out of range"));
-	KASSERT(end_blk <= sc->nblocks, ("end_blk out of range"));
-
-	sc->req_total++;
-	if (start_blk + 1 == end_blk) {
-		mtx_lock(&sc->last_mtx);
-		if (start_blk == sc->last_blk) {
-			off_t uoff;
-
-			uoff = bp->bio_offset % sc->blksz;
-			KASSERT(bp->bio_length <= sc->blksz - uoff,
-			    ("cached data error"));
-			memcpy(bp->bio_data, sc->last_buf + uoff,
-			    bp->bio_length);
-			sc->req_cached++;
-			mtx_unlock(&sc->last_mtx);
-
-			DPRINTF(("%s: start: cached 0 + %jd, %jd + 0 + %jd\n",
-			    gp->name, (intmax_t)bp->bio_length, (intmax_t)uoff,
-			    (intmax_t)bp->bio_length));
-			bp->bio_completed = bp->bio_length;
-			g_io_deliver(bp, 0);
-			return;
-		}
-		mtx_unlock(&sc->last_mtx);
-	}
-
-	bp2 = g_clone_bio(bp);
-	if (bp2 == NULL) {
-		g_io_deliver(bp, ENOMEM);
-		return;
-	}
-	DPRINTF(("%s: start (%d..%d), %s: %d + %jd, %s: %d + %jd\n",
-	    gp->name, start_blk, end_blk,
-	    pp->name, pp->sectorsize, (intmax_t)pp->mediasize,
-	    pp2->name, pp2->sectorsize, (intmax_t)pp2->mediasize));
-	bsize = pp2->sectorsize;
-	bp2->bio_done = g_uncompress_done;
-	bp2->bio_offset = rounddown(sc->offsets[start_blk], bsize);
-	while (1) {
-		bp2->bio_length = roundup(sc->offsets[end_blk], bsize) -
-		    bp2->bio_offset;
-		if (bp2->bio_length < MAXPHYS)
-			break;
-
-		end_blk--;
-		DPRINTF((
-		    "%s: bio_length (%jd) > MAXPHYS: lowering end_blk to %u\n",
-		    gp->name, (intmax_t)bp2->bio_length, end_blk));
-	}
-	DPRINTF(("%s: start %jd + %jd -> %ju + %ju -> %jd + %jd\n",
-	    gp->name,
-	    (intmax_t)bp->bio_offset, (intmax_t)bp->bio_length,
-	    (uintmax_t)sc->offsets[start_blk],
-	    (uintmax_t)sc->offsets[end_blk] - sc->offsets[start_blk],
-	    (intmax_t)bp2->bio_offset, (intmax_t)bp2->bio_length));
-	bp2->bio_data = malloc(bp2->bio_length, M_GEOM_UNCOMPRESS, M_NOWAIT);
-	if (bp2->bio_data == NULL) {
-		g_destroy_bio(bp2);
-		g_io_deliver(bp, ENOMEM);
-		return;
-	}
-
-	g_io_request(bp2, cp);
-	DPRINTF(("%s: start ok\n", gp->name));
-}
-
-static void
-g_uncompress_orphan(struct g_consumer *cp)
-{
-	struct g_geom *gp;
-
-	g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp, cp->provider->name);
-	g_topology_assert();
-
-	gp = cp->geom;
-	g_uncompress_softc_free(gp->softc, gp);
-	gp->softc = NULL;
-	g_wither_geom(gp, ENXIO);
-}
-
-static int
-g_uncompress_access(struct g_provider *pp, int dr, int dw, int de)
-{
-	struct g_consumer *cp;
-	struct g_geom *gp;
-
-	gp = pp->geom;
-	cp = LIST_FIRST(&gp->consumer);
-	KASSERT (cp != NULL, ("g_uncompress_access but no consumer"));
-
-	if (cp->acw + dw > 0)
-		return (EROFS);
-
-	return (g_access(cp, dr, dw, de));
-}
-
-static void
-g_uncompress_spoiled(struct g_consumer *cp)
-{
-	struct g_geom *gp;
-
-	gp = cp->geom;
-	g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp, gp->name);
-	g_topology_assert();
-
-	g_uncompress_softc_free(gp->softc, gp);
-	gp->softc = NULL;
-	g_wither_geom(gp, ENXIO);
-}
-
-static struct g_geom *
-g_uncompress_taste(struct g_class *mp, struct g_provider *pp, int flags)
-{
-	struct cloop_header *header;
-	struct g_uncompress_softc *sc;
-	struct g_provider *pp2;
-	struct g_consumer *cp;
-	struct g_geom *gp;
-	uint64_t *offsets;
-	uint32_t i, r, total, total_offsets, type;
-	uint8_t *buf;
-	int error;
-
-	g_trace(G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name);
-	g_topology_assert();
-
-	/* Skip providers that are already open for writing. */
-	if (pp->acw > 0)
-		return (NULL);
-
-	buf = NULL;
-
-	/*
-	 * Create geom instance.
-	 */
-	gp = g_new_geomf(mp, "%s.uncompress", pp->name);
-	cp = g_new_consumer(gp);
-	error = g_attach(cp, pp);
-	if (error == 0)
-		error = g_access(cp, 1, 0, 0);
-	if (error) {
-		g_detach(cp);
-		g_destroy_consumer(cp);
-		g_destroy_geom(gp);
-		return (NULL);
-	}
-	g_topology_unlock();
-
-	/*
-	 * Read cloop header, look for CLOOP magic, perform
-	 * other validity checks.
-	 */
-	DPRINTF(("%s: media sectorsize %u, mediasize %jd\n",
-	    gp->name, pp->sectorsize, (intmax_t)pp->mediasize));
-	total = roundup(sizeof(struct cloop_header), pp->sectorsize);
-	buf = g_read_data(cp, 0, total, NULL);
-	if (buf == NULL)
-		goto err;
-	header = (struct cloop_header *) buf;
-	if (strncmp(header->magic, CLOOP_MAGIC_START,
-	    sizeof(CLOOP_MAGIC_START) - 1) != 0) {
-		DPRINTF(("%s: no CLOOP magic\n", gp->name));
-		goto err;
-	}
-
-	switch (header->magic[0x0b]) {
-	case 'L':
-		type = GEOM_ULZMA;
-		if (header->magic[0x0c] < GEOM_ULZMA_MAJVER) {
-			DPRINTF(("%s: image version too old\n", gp->name));
-			goto err;
-		}
-		DPRINTF(("%s: GEOM_ULZMA image found\n", gp->name));
-		break;
-	case 'V':
-		type = GEOM_UZIP;
-		if (header->magic[0x0c] < GEOM_UZIP_MAJVER) {
-			DPRINTF(("%s: image version too old\n", gp->name));
-			goto err;
-		}
-		DPRINTF(("%s: GEOM_UZIP image found\n", gp->name));
-		break;
-	default:
-		DPRINTF(("%s: unsupported image type\n", gp->name));
-		goto err;
-	}
-
-	DPRINTF(("%s: found CLOOP magic\n", gp->name));
-	/*
-	 * Initialize softc and read offsets.
-	 */
-	sc = malloc(sizeof(*sc), M_GEOM_UNCOMPRESS, M_WAITOK | M_ZERO);
-	gp->softc = sc;
-	sc->type = type;
-	sc->blksz = ntohl(header->blksz);
-	sc->nblocks = ntohl(header->nblocks);
-	if (sc->blksz % 4 != 0) {
-		printf("%s: block size (%u) should be multiple of 4.\n",
-		    gp->name, sc->blksz);
-		goto err;
-	}
-	if (sc->blksz > MAX_BLKSZ) {
-		printf("%s: block size (%u) should not be larger than %d.\n",
-		    gp->name, sc->blksz, MAX_BLKSZ);
-	}
-	total_offsets = sc->nblocks + 1;
-	if (sizeof(struct cloop_header) +
-	    total_offsets * sizeof(uint64_t) > pp->mediasize) {
-		printf("%s: media too small for %u blocks\n",
-		    gp->name, sc->nblocks);
-		goto err;
-	}
-	g_free(buf);
-
-	sc->offsets = malloc(total_offsets * sizeof(uint64_t),
-	    M_GEOM_UNCOMPRESS, M_WAITOK | M_ZERO);
-	total = roundup((sizeof(struct cloop_header) +
-	    total_offsets * sizeof(uint64_t)), pp->sectorsize);
-#define	RSZ	((total - r) > MAXPHYS ? MAXPHYS: (total - r))
-	for (r = 0, i = 0; r < total; r += MAXPHYS) {
-		buf = g_read_data(cp, r, RSZ, &error);
-		if (buf == NULL) {
-			free(sc->offsets, M_GEOM_UNCOMPRESS);
-			goto err;
-		}
-		offsets = (uint64_t *)buf;
-		if (r == 0)
-			offsets +=
-			    sizeof(struct cloop_header) / sizeof(uint64_t);
-		for (; i < total_offsets && offsets < (uint64_t *)(buf + RSZ);
-		    i++, offsets++)
-			sc->offsets[i] = be64toh(*offsets);
-		g_free(buf);
-	}
-#undef RSZ
-	buf = NULL;
-	DPRINTF(("%s: done reading offsets\n", gp->name));
-	mtx_init(&sc->last_mtx, "geom_uncompress cache", NULL, MTX_DEF);
-	sc->last_blk = -1;
-	sc->last_buf = malloc(sc->blksz, M_GEOM_UNCOMPRESS, M_WAITOK);
-	sc->req_total = 0;
-	sc->req_cached = 0;
-
-	switch (sc->type) {
-	case GEOM_ULZMA:
-		xz_crc32_init();
-		sc->s = xz_dec_init(XZ_SINGLE, 0);
-		sc->b = (struct xz_buf*)malloc(sizeof(struct xz_buf),
-		    M_GEOM_UNCOMPRESS, M_WAITOK);
-		break;
-	case GEOM_UZIP:
-		sc->zs = (z_stream *)malloc(sizeof(z_stream),
-		    M_GEOM_UNCOMPRESS, M_WAITOK);
-		sc->zs->zalloc = z_alloc;
-		sc->zs->zfree = z_free;
-		if (inflateInit(sc->zs) != Z_OK) {
-			goto err;
-		}
-		break;
-	}
-
-	g_topology_lock();
-	pp2 = g_new_providerf(gp, "%s", gp->name);
-	pp2->sectorsize = 512;
-	pp2->mediasize = (off_t)sc->nblocks * sc->blksz;
-	if (pp->stripesize > 0) {
-		pp2->stripesize = pp->stripesize;
-		pp2->stripeoffset = pp->stripeoffset;
-	}
-	g_error_provider(pp2, 0);
-	g_access(cp, -1, 0, 0);
-
-	DPRINTF(("%s: taste ok (%d, %jd), (%d, %d), %x\n",
-	    gp->name,
-	    pp2->sectorsize, (intmax_t)pp2->mediasize,
-	    pp2->stripeoffset, pp2->stripesize, pp2->flags));
-	DPRINTF(("%s: %u x %u blocks\n", gp->name, sc->nblocks, sc->blksz));
-	return (gp);
-
-err:
-	g_topology_lock();
-	g_access(cp, -1, 0, 0);
-	if (buf != NULL)
-		g_free(buf);
-	if (gp->softc != NULL) {
-		g_uncompress_softc_free(gp->softc, NULL);
-		gp->softc = NULL;
-	}
-	g_detach(cp);
-	g_destroy_consumer(cp);
-	g_destroy_geom(gp);
-
-	return (NULL);
-}
-
-static int
-g_uncompress_destroy_geom(struct gctl_req *req, struct g_class *mp,
-			  struct g_geom *gp)
-{
-	struct g_provider *pp;
-
-	g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, gp->name);
-	g_topology_assert();
-
-	if (gp->softc == NULL) {
-		DPRINTF(("%s(%s): gp->softc == NULL\n", __func__, gp->name));
-		return (ENXIO);
-	}
-
-	KASSERT(gp != NULL, ("NULL geom"));
-	pp = LIST_FIRST(&gp->provider);
-	KASSERT(pp != NULL, ("NULL provider"));
-	if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0)
-		return (EBUSY);
-
-	g_uncompress_softc_free(gp->softc, gp);
-	gp->softc = NULL;
-	g_wither_geom(gp, ENXIO);
-
-	return (0);
-}
-
-static struct g_class g_uncompress_class = {
-	.name = UNCOMPRESS_CLASS_NAME,
-	.version = G_VERSION,
-	.taste = g_uncompress_taste,
-	.destroy_geom = g_uncompress_destroy_geom,
-
-	.start = g_uncompress_start,
-	.orphan = g_uncompress_orphan,
-	.access = g_uncompress_access,
-	.spoiled = g_uncompress_spoiled,
-};
-
-DECLARE_GEOM_CLASS(g_uncompress_class, g_uncompress);
-MODULE_DEPEND(g_uncompress, zlib, 1, 1, 1);