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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
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*/
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/*
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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#include <common.h>
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#include <malloc.h>
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#include <linux/stat.h>
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#include <linux/time.h>
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#include <linux/ctype.h>
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#include <asm/byteorder.h>
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#include "zfs_common.h"
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#include <zfs/zfs.h>
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#include <zfs/zio.h>
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#include <zfs/dnode.h>
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#include <zfs/uberblock_impl.h>
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#include <zfs/vdev_impl.h>
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#include <zfs/zio_checksum.h>
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#include <zfs/zap_impl.h>
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#include <zfs/zap_leaf.h>
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#include <zfs/zfs_znode.h>
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#include <zfs/dmu.h>
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#include <zfs/dmu_objset.h>
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#include <zfs/dsl_dir.h>
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#include <zfs/dsl_dataset.h>
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#define MATCH_BITS 6
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#define MATCH_MIN 3
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#define OFFSET_MASK ((1 << (16 - MATCH_BITS)) - 1)
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/*
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* Decompression Entry - lzjb
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*/
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#ifndef NBBY
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#define NBBY 8
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#endif
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int
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lzjb_decompress(void *s_start, void *d_start, uint32_t s_len,
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uint32_t d_len)
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{
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uint8_t *src = s_start;
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uint8_t *dst = d_start;
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uint8_t *d_end = (uint8_t *) d_start + d_len;
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uint8_t *s_end = (uint8_t *) s_start + s_len;
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uint8_t *cpy, copymap = 0;
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int copymask = 1 << (NBBY - 1);
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while (dst < d_end && src < s_end) {
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if ((copymask <<= 1) == (1 << NBBY)) {
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copymask = 1;
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copymap = *src++;
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}
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if (src >= s_end) {
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printf("lzjb decompression failed\n");
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return ZFS_ERR_BAD_FS;
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}
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if (copymap & copymask) {
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int mlen = (src[0] >> (NBBY - MATCH_BITS)) + MATCH_MIN;
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int offset = ((src[0] << NBBY) | src[1]) & OFFSET_MASK;
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src += 2;
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cpy = dst - offset;
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if (src > s_end || cpy < (uint8_t *) d_start) {
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printf("lzjb decompression failed\n");
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return ZFS_ERR_BAD_FS;
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}
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while (--mlen >= 0 && dst < d_end)
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*dst++ = *cpy++;
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} else {
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*dst++ = *src++;
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}
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}
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if (dst < d_end) {
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printf("lzjb decompression failed\n");
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return ZFS_ERR_BAD_FS;
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}
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return ZFS_ERR_NONE;
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}
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