mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-15 01:17:39 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
/*
|
|
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <malloc.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/time.h>
|
|
#include <linux/ctype.h>
|
|
#include <asm/byteorder.h>
|
|
#include "zfs_common.h"
|
|
|
|
#include <zfs/zfs.h>
|
|
#include <zfs/zio.h>
|
|
#include <zfs/dnode.h>
|
|
#include <zfs/uberblock_impl.h>
|
|
#include <zfs/vdev_impl.h>
|
|
#include <zfs/zio_checksum.h>
|
|
#include <zfs/zap_impl.h>
|
|
#include <zfs/zap_leaf.h>
|
|
#include <zfs/zfs_znode.h>
|
|
#include <zfs/dmu.h>
|
|
#include <zfs/dmu_objset.h>
|
|
#include <zfs/dsl_dir.h>
|
|
#include <zfs/dsl_dataset.h>
|
|
|
|
#define MATCH_BITS 6
|
|
#define MATCH_MIN 3
|
|
#define OFFSET_MASK ((1 << (16 - MATCH_BITS)) - 1)
|
|
|
|
/*
|
|
* Decompression Entry - lzjb
|
|
*/
|
|
#ifndef NBBY
|
|
#define NBBY 8
|
|
#endif
|
|
|
|
int
|
|
lzjb_decompress(void *s_start, void *d_start, uint32_t s_len,
|
|
uint32_t d_len)
|
|
{
|
|
uint8_t *src = s_start;
|
|
uint8_t *dst = d_start;
|
|
uint8_t *d_end = (uint8_t *) d_start + d_len;
|
|
uint8_t *s_end = (uint8_t *) s_start + s_len;
|
|
uint8_t *cpy, copymap = 0;
|
|
int copymask = 1 << (NBBY - 1);
|
|
|
|
while (dst < d_end && src < s_end) {
|
|
if ((copymask <<= 1) == (1 << NBBY)) {
|
|
copymask = 1;
|
|
copymap = *src++;
|
|
}
|
|
if (src >= s_end) {
|
|
printf("lzjb decompression failed\n");
|
|
return ZFS_ERR_BAD_FS;
|
|
}
|
|
if (copymap & copymask) {
|
|
int mlen = (src[0] >> (NBBY - MATCH_BITS)) + MATCH_MIN;
|
|
int offset = ((src[0] << NBBY) | src[1]) & OFFSET_MASK;
|
|
src += 2;
|
|
cpy = dst - offset;
|
|
if (src > s_end || cpy < (uint8_t *) d_start) {
|
|
printf("lzjb decompression failed\n");
|
|
return ZFS_ERR_BAD_FS;
|
|
}
|
|
while (--mlen >= 0 && dst < d_end)
|
|
*dst++ = *cpy++;
|
|
} else {
|
|
*dst++ = *src++;
|
|
}
|
|
}
|
|
if (dst < d_end) {
|
|
printf("lzjb decompression failed\n");
|
|
return ZFS_ERR_BAD_FS;
|
|
}
|
|
return ZFS_ERR_NONE;
|
|
}
|