GEOM_UNCOMPRESS module, can be used with uzip images and with new ulzma images.
Approved by: adrian (mentor)
This commit is contained in:
Aleksandr Rybalko
parent
e11f2b8243
commit
ce96bb7942
@ -2266,20 +2266,21 @@ geom/raid3/g_raid3.c optional geom_raid3
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geom/raid3/g_raid3_ctl.c optional geom_raid3
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geom/shsec/g_shsec.c optional geom_shsec
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geom/stripe/g_stripe.c optional geom_stripe
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geom/uncompress/g_uncompress.c optional geom_uncompress
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contrib/xz-embedded/freebsd/xz_malloc.c \
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optional xz_embedded \
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optional xz_embedded | geom_uncompress \
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compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
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contrib/xz-embedded/linux/lib/xz/xz_crc32.c \
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optional xz_embedded \
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optional xz_embedded | geom_uncompress \
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compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
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contrib/xz-embedded/linux/lib/xz/xz_dec_bcj.c \
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optional xz_embedded \
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optional xz_embedded | geom_uncompress \
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compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
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contrib/xz-embedded/linux/lib/xz/xz_dec_lzma2.c \
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optional xz_embedded \
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optional xz_embedded | geom_uncompress \
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compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
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contrib/xz-embedded/linux/lib/xz/xz_dec_stream.c \
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optional xz_embedded \
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optional xz_embedded | geom_uncompress \
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compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
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geom/uzip/g_uzip.c optional geom_uzip
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geom/virstor/binstream.c optional geom_virstor
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@ -2651,7 +2652,7 @@ net/slcompress.c optional netgraph_vjc | sppp | \
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net/vnet.c optional vimage
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net/zlib.c optional crypto | geom_uzip | ipsec | \
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mxge | netgraph_deflate | \
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ddb_ctf | gzio
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ddb_ctf | gzio | geom_uncompress
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net80211/ieee80211.c optional wlan
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net80211/ieee80211_acl.c optional wlan wlan_acl
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net80211/ieee80211_action.c optional wlan
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@ -112,6 +112,7 @@ GEOM_RAID3 opt_geom.h
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GEOM_SHSEC opt_geom.h
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GEOM_STRIPE opt_geom.h
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GEOM_SUNLABEL opt_geom.h
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GEOM_UNCOMPRESS opt_geom.h
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GEOM_UZIP opt_geom.h
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GEOM_VIRSTOR opt_geom.h
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GEOM_VOL opt_geom.h
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670
sys/geom/uncompress/g_uncompress.c
Normal file
670
sys/geom/uncompress/g_uncompress.c
Normal file
@ -0,0 +1,670 @@
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/*-
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* Copyright (c) 2010-2012 Aleksandr Rybalko
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* Copyright (c) 2004 Max Khon
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* GEOM UNCOMPRESS module - simple decompression module for use with read-only
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* copressed images maked by mkuzip(8) or mkulzma(8) utilities.
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*
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* To enable module in kernel config, put this line:
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* device geom_uncompress
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bio.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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#include <geom/geom.h>
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#include <net/zlib.h>
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#include <contrib/xz-embedded/linux/include/linux/xz.h>
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#ifdef GEOM_UNCOMPRESS_DEBUG
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#define DPRINTF(a) printf a
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extern int g_debugflags;
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#else
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#define DPRINTF(a)
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#endif
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static MALLOC_DEFINE(M_GEOM_UNCOMPRESS, "geom_uncompress",
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"GEOM UNCOMPRESS data structures");
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#define UNCOMPRESS_CLASS_NAME "UNCOMPRESS"
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#define GEOM_UZIP_MAJVER '2'
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#define GEOM_ULZMA_MAJVER '3'
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/*
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* Maximum allowed valid block size (to prevent foot-shooting)
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*/
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#define MAX_BLKSZ (MAXPHYS)
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/*
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* Integer values (block size, number of blocks, offsets)
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* are stored in big-endian (network) order on disk and struct cloop_header
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* and in native order in struct g_uncompress_softc
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*/
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#define CLOOP_MAGIC_LEN 128
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static char CLOOP_MAGIC_START[] = "#!/bin/sh\n";
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struct cloop_header {
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char magic[CLOOP_MAGIC_LEN]; /* cloop magic */
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uint32_t blksz; /* block size */
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uint32_t nblocks; /* number of blocks */
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};
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struct g_uncompress_softc {
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uint32_t blksz; /* block size */
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uint32_t nblocks; /* number of blocks */
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uint64_t *offsets;
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enum {
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GEOM_UZIP = 1,
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GEOM_ULZMA
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} type;
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struct mtx last_mtx;
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uint32_t last_blk; /* last blk no */
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char *last_buf; /* last blk data */
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int req_total; /* total requests */
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int req_cached; /* cached requests */
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/* XZ decoder structs */
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struct xz_buf *b;
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struct xz_dec *s;
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z_stream *zs;
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};
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static void
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g_uncompress_softc_free(struct g_uncompress_softc *sc, struct g_geom *gp)
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{
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if (gp != NULL) {
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printf("%s: %d requests, %d cached\n",
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gp->name, sc->req_total, sc->req_cached);
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}
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if (sc->offsets != NULL) {
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free(sc->offsets, M_GEOM_UNCOMPRESS);
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sc->offsets = 0;
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}
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switch (sc->type) {
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case GEOM_ULZMA:
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if (sc->b) {
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free(sc->b, M_GEOM_UNCOMPRESS);
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sc->b = 0;
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}
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if (sc->s) {
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xz_dec_end(sc->s);
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sc->s = 0;
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}
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break;
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case GEOM_UZIP:
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if (sc->zs) {
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inflateEnd(sc->zs);
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free(sc->zs, M_GEOM_UNCOMPRESS);
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sc->zs = 0;
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}
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break;
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}
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mtx_destroy(&sc->last_mtx);
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free(sc->last_buf, M_GEOM_UNCOMPRESS);
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free(sc, M_GEOM_UNCOMPRESS);
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}
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static void *
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z_alloc(void *nil, u_int type, u_int size)
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{
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void *ptr;
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ptr = malloc(type * size, M_GEOM_UNCOMPRESS, M_NOWAIT);
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return (ptr);
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}
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static void
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z_free(void *nil, void *ptr)
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{
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free(ptr, M_GEOM_UNCOMPRESS);
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}
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static void
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g_uncompress_done(struct bio *bp)
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{
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struct g_uncompress_softc *sc;
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struct g_provider *pp, *pp2;
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struct g_consumer *cp;
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struct g_geom *gp;
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struct bio *bp2;
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uint32_t start_blk, i;
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off_t pos, upos;
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size_t bsize;
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int err;
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err = 0;
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bp2 = bp->bio_parent;
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pp = bp2->bio_to;
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gp = pp->geom;
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cp = LIST_FIRST(&gp->consumer);
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pp2 = cp->provider;
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sc = gp->softc;
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DPRINTF(("%s: done\n", gp->name));
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bp2->bio_error = bp->bio_error;
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if (bp2->bio_error != 0)
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goto done;
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/*
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* Example:
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* Uncompressed block size = 65536
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* User request: 65540-261632
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* (4 uncompressed blocks -4B at start, -512B at end)
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*
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* We have 512(secsize)*63(nsec) = 32256B at offset 1024
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* From: 1024 bp->bio_offset = 1024
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* To: 33280 bp->bio_length = 33280 - 1024 = 32256
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* Compressed blocks: 0-1020, 1020-1080, 1080-4845, 4845-12444,
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* 12444-33210, 33210-44100, ...
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*
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* Get start_blk from user request:
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* start_blk = bp2->bio_offset / 65536 = 65540/65536 = 1
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* bsize (block size of parent) = pp2->sectorsize (Now is 4B)
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* pos(in stream from parent) = sc->offsets[start_blk] % bsize =
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* = sc->offsets[1] % 4 = 1020 % 4 = 0
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*/
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/*
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* Uncompress data.
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*/
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start_blk = bp2->bio_offset / sc->blksz;
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bsize = pp2->sectorsize;
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pos = sc->offsets[start_blk] % bsize;
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upos = 0;
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DPRINTF(("%s: done: bio_length %lld bio_completed %lld start_blk %d, "
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"pos %lld, upos %lld (%lld, %d, %d)\n",
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gp->name, bp->bio_length, bp->bio_completed, start_blk, pos, upos,
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bp2->bio_offset, sc->blksz, bsize));
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for (i = start_blk; upos < bp2->bio_length; i++) {
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off_t len, dlen, ulen, uoff;
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uoff = i == start_blk ? bp2->bio_offset % sc->blksz : 0;
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ulen = MIN(sc->blksz - uoff, bp2->bio_length - upos);
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dlen = len = sc->offsets[i + 1] - sc->offsets[i];
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DPRINTF(("%s: done: inflate block %d, start %lld, end %lld "
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"len %lld\n",
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gp->name, i, sc->offsets[i], sc->offsets[i + 1], len));
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if (len == 0) {
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/* All zero block: no cache update */
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bzero(bp2->bio_data + upos, ulen);
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upos += ulen;
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bp2->bio_completed += ulen;
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continue;
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}
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mtx_lock(&sc->last_mtx);
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#ifdef GEOM_UNCOMPRESS_DEBUG
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if (g_debugflags & 32)
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hexdump(bp->bio_data + pos, dlen, 0, 0);
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#endif
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switch (sc->type) {
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case GEOM_ULZMA:
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sc->b->in = bp->bio_data + pos;
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sc->b->out = sc->last_buf;
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sc->b->in_pos = sc->b->out_pos = 0;
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sc->b->in_size = dlen;
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sc->b->out_size = (size_t)-1;
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err = (xz_dec_run(sc->s, sc->b) != XZ_STREAM_END) ?
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1 : 0;
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/* TODO decoder recovery, if needed */
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break;
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case GEOM_UZIP:
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sc->zs->next_in = bp->bio_data + pos;
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sc->zs->avail_in = dlen;
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sc->zs->next_out = sc->last_buf;
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sc->zs->avail_out = sc->blksz;
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err = (inflate(sc->zs, Z_FINISH) != Z_STREAM_END) ?
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1 : 0;
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if ((err) && (inflateReset(sc->zs) != Z_OK))
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printf("%s: UZIP decoder reset failed\n",
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gp->name);
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break;
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}
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if (err) {
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sc->last_blk = -1;
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mtx_unlock(&sc->last_mtx);
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DPRINTF(("%s: done: inflate failed, code=%d\n",
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gp->name, err));
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bp2->bio_error = EIO;
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goto done;
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}
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#ifdef GEOM_UNCOMPRESS_DEBUG
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if (g_debugflags & 32)
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hexdump(sc->last_buf, sc->b->out_size, 0, 0);
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#endif
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sc->last_blk = i;
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DPRINTF(("%s: done: inflated \n", gp->name));
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memcpy(bp2->bio_data + upos, sc->last_buf + uoff, ulen);
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mtx_unlock(&sc->last_mtx);
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pos += len;
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upos += ulen;
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bp2->bio_completed += ulen;
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}
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done:
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/*
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* Finish processing the request.
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*/
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DPRINTF(("%s: done: (%d, %lld, %ld)\n",
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gp->name, bp2->bio_error, bp2->bio_completed, bp2->bio_resid));
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free(bp->bio_data, M_GEOM_UNCOMPRESS);
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g_destroy_bio(bp);
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g_io_deliver(bp2, bp2->bio_error);
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}
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static void
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g_uncompress_start(struct bio *bp)
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{
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struct g_uncompress_softc *sc;
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struct g_provider *pp, *pp2;
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struct g_consumer *cp;
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struct g_geom *gp;
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struct bio *bp2;
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uint32_t start_blk, end_blk;
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size_t bsize;
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pp = bp->bio_to;
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gp = pp->geom;
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DPRINTF(("%s: start (%s) to %s off=%lld len=%lld\n", gp->name,
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(bp->bio_cmd==BIO_READ) ? "BIO_READ" : "BIO_WRITE*",
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pp->name, bp->bio_offset, bp->bio_length));
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if (bp->bio_cmd != BIO_READ) {
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g_io_deliver(bp, EOPNOTSUPP);
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return;
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}
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cp = LIST_FIRST(&gp->consumer);
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pp2 = cp->provider;
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sc = gp->softc;
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start_blk = bp->bio_offset / sc->blksz;
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end_blk = howmany(bp->bio_offset + bp->bio_length, sc->blksz);
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KASSERT(start_blk < sc->nblocks,
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("start_blk out of range"));
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KASSERT(end_blk <= sc->nblocks,
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("end_blk out of range"));
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sc->req_total++;
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if (start_blk + 1 == end_blk) {
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mtx_lock(&sc->last_mtx);
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if (start_blk == sc->last_blk) {
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off_t uoff;
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uoff = bp->bio_offset % sc->blksz;
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KASSERT(bp->bio_length <= sc->blksz - uoff,
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("cached data error"));
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memcpy(bp->bio_data, sc->last_buf + uoff,
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bp->bio_length);
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sc->req_cached++;
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mtx_unlock(&sc->last_mtx);
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DPRINTF(("%s: start: cached 0 + %lld, "
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"%lld + 0 + %lld\n",
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gp->name, bp->bio_length, uoff, bp->bio_length));
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bp->bio_completed = bp->bio_length;
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g_io_deliver(bp, 0);
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return;
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}
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mtx_unlock(&sc->last_mtx);
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}
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bp2 = g_clone_bio(bp);
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if (bp2 == NULL) {
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g_io_deliver(bp, ENOMEM);
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return;
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}
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DPRINTF(("%s: start (%d..%d), %s: %d + %llu, %s: %d + %llu\n",
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gp->name, start_blk, end_blk,
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pp->name, pp->sectorsize, pp->mediasize,
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pp2->name, pp2->sectorsize, pp2->mediasize));
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bsize = pp2->sectorsize;
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bp2->bio_done = g_uncompress_done;
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bp2->bio_offset = rounddown(sc->offsets[start_blk],bsize);
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bp2->bio_length = roundup(sc->offsets[end_blk],bsize) -
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bp2->bio_offset;
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bp2->bio_data = malloc(bp2->bio_length, M_GEOM_UNCOMPRESS, M_NOWAIT);
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DPRINTF(("%s: start %lld + %lld -> %lld + %lld -> %lld + %lld\n",
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gp->name,
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bp->bio_offset, bp->bio_length,
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sc->offsets[start_blk],
|
||||
sc->offsets[end_blk] - sc->offsets[start_blk],
|
||||
bp2->bio_offset, bp2->bio_length));
|
||||
|
||||
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();
|
||||
KASSERT(cp->provider->error != 0,
|
||||
("g_uncompress_orphan with error == 0"));
|
||||
|
||||
gp = cp->geom;
|
||||
g_uncompress_softc_free(gp->softc, gp);
|
||||
gp->softc = NULL;
|
||||
g_wither_geom(gp, cp->provider->error);
|
||||
}
|
||||
|
||||
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;
|
||||
uint32_t i, total_offsets, offsets_read, 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 %lld\n",
|
||||
gp->name, pp->sectorsize, pp->mediasize));
|
||||
|
||||
i = roundup(sizeof(struct cloop_header), pp->sectorsize);
|
||||
buf = g_read_data(cp, 0, i, 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;
|
||||
}
|
||||
printf("%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;
|
||||
}
|
||||
printf("%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;
|
||||
}
|
||||
sc->offsets = malloc(
|
||||
total_offsets * sizeof(uint64_t), M_GEOM_UNCOMPRESS, M_WAITOK);
|
||||
offsets_read = MIN(total_offsets,
|
||||
(pp->sectorsize - sizeof(*header)) / sizeof(uint64_t));
|
||||
for (i = 0; i < offsets_read; i++)
|
||||
sc->offsets[i] = be64toh(((uint64_t *) (header + 1))[i]);
|
||||
DPRINTF(("%s: %u offsets in the first sector\n",
|
||||
gp->name, offsets_read));
|
||||
|
||||
free(buf, M_GEOM);
|
||||
i = roundup((sizeof(struct cloop_header) +
|
||||
total_offsets * sizeof(uint64_t)),pp->sectorsize);
|
||||
buf = g_read_data(cp, 0, i, NULL);
|
||||
if (buf == NULL)
|
||||
goto err;
|
||||
for (i = 0; i <= total_offsets; i++) {
|
||||
sc->offsets[i] = be64toh(((uint64_t *)
|
||||
(buf+sizeof(struct cloop_header)))[i]);
|
||||
}
|
||||
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;
|
||||
pp2->flags = pp->flags & G_PF_CANDELETE;
|
||||
if (pp->stripesize > 0) {
|
||||
pp2->stripesize = pp->stripesize;
|
||||
pp2->stripeoffset = pp->stripeoffset;
|
||||
}
|
||||
g_error_provider(pp2, 0);
|
||||
free(buf, M_GEOM);
|
||||
g_access(cp, -1, 0, 0);
|
||||
|
||||
DPRINTF(("%s: taste ok (%d, %lld), (%d, %d), %x\n",
|
||||
gp->name,
|
||||
pp2->sectorsize, pp2->mediasize,
|
||||
pp2->stripeoffset, pp2->stripesize, pp2->flags));
|
||||
printf("%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)
|
||||
free(buf, M_GEOM);
|
||||
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) {
|
||||
printf("%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);
|
||||
|
||||
17
sys/modules/geom/geom_uncompress/Makefile
Normal file
17
sys/modules/geom/geom_uncompress/Makefile
Normal file
@ -0,0 +1,17 @@
|
||||
# $FreeBSD$
|
||||
|
||||
.PATH: ${.CURDIR}/../../../geom/uncompress \
|
||||
${.CURDIR}/../../../contrib/xz-embedded/freebsd/ \
|
||||
${.CURDIR}/../../../contrib/xz-embedded/linux/lib/xz/ \
|
||||
${.CURDIR}/../../../contrib/xz-embedded/linux/include/linux/ \
|
||||
${.CURDIR}/../../../net
|
||||
|
||||
KMOD= geom_uncompress
|
||||
CFLAGS= -I${.CURDIR}/../../../geom/uncompress/ \
|
||||
-I${.CURDIR}/../../../contrib/xz-embedded/freebsd \
|
||||
-I${.CURDIR}/../../../contrib/xz-embedded/linux/lib/xz/
|
||||
SRCS= g_uncompress.c xz_crc32.c xz_dec_bcj.c xz_dec_lzma2.c xz_dec_stream.c \
|
||||
xz_malloc.c zlib.c
|
||||
SRCS+= xz.h xz_config.h xz_lzma2.h xz_malloc.h xz_private.h xz_stream.h zlib.h
|
||||
|
||||
.include <bsd.kmod.mk>
|
||||
Loading…
x
Reference in New Issue
Block a user