]>
git.ipfire.org Git - people/ms/u-boot.git/blob - lib/lzma/LzmaTools.c
2 * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.65
4 * Copyright (C) 2007-2009 Industrie Dial Face S.p.A.
5 * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com)
7 * Copyright (C) 1999-2005 Igor Pavlov
9 * SPDX-License-Identifier: GPL-2.0+
13 * LZMA_Alone stream format:
16 * uint64 Uncompressed size
27 #define LZMA_PROPERTIES_OFFSET 0
28 #define LZMA_SIZE_OFFSET LZMA_PROPS_SIZE
29 #define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
31 #include "LzmaTools.h"
34 #include <linux/string.h>
37 static void *SzAlloc(void *p
, size_t size
) { p
= p
; return malloc(size
); }
38 static void SzFree(void *p
, void *address
) { p
= p
; free(address
); }
40 int lzmaBuffToBuffDecompress (unsigned char *outStream
, SizeT
*uncompressedSize
,
41 unsigned char *inStream
, SizeT length
)
43 int res
= SZ_ERROR_DATA
;
47 SizeT outSizeFull
= 0xFFFFFFFF; /* 4GBytes limit */
52 SizeT compressedSize
= (SizeT
)(length
- LZMA_PROPS_SIZE
);
54 debug ("LZMA: Image address............... 0x%p\n", inStream
);
55 debug ("LZMA: Properties address.......... 0x%p\n", inStream
+ LZMA_PROPERTIES_OFFSET
);
56 debug ("LZMA: Uncompressed size address... 0x%p\n", inStream
+ LZMA_SIZE_OFFSET
);
57 debug ("LZMA: Compressed data address..... 0x%p\n", inStream
+ LZMA_DATA_OFFSET
);
58 debug ("LZMA: Destination address......... 0x%p\n", outStream
);
60 memset(&state
, 0, sizeof(state
));
64 /* Read the uncompressed size */
65 for (i
= 0; i
< 8; i
++) {
66 unsigned char b
= inStream
[LZMA_SIZE_OFFSET
+ i
];
68 outSize
+= (UInt32
)(b
) << (i
* 8);
70 outSizeHigh
+= (UInt32
)(b
) << ((i
- 4) * 8);
74 outSizeFull
= (SizeT
)outSize
;
75 if (sizeof(SizeT
) >= 8) {
77 * SizeT is a 64 bit uint => We can manage files larger than 4GB!
80 outSizeFull
|= (((SizeT
)outSizeHigh
<< 16) << 16);
81 } else if (outSizeHigh
!= 0 || (UInt32
)(SizeT
)outSize
!= outSize
) {
83 * SizeT is a 32 bit uint => We cannot manage files larger than
84 * 4GB! Assume however that all 0xf values is "unknown size" and
85 * not actually a file of 2^64 bits.
88 if (outSizeHigh
!= (SizeT
)-1 || outSize
!= (SizeT
)-1) {
89 debug ("LZMA: 64bit support not enabled.\n");
94 debug("LZMA: Uncompresed size............ 0x%zx\n", outSizeFull
);
95 debug("LZMA: Compresed size.............. 0x%zx\n", compressedSize
);
97 g_Alloc
.Alloc
= SzAlloc
;
98 g_Alloc
.Free
= SzFree
;
100 /* Short-circuit early if we know the buffer can't hold the results. */
101 if (outSizeFull
!= (SizeT
)-1 && *uncompressedSize
< outSizeFull
)
102 return SZ_ERROR_OUTPUT_EOF
;
105 outProcessed
= *uncompressedSize
;
110 outStream
, &outProcessed
,
111 inStream
+ LZMA_DATA_OFFSET
, &compressedSize
,
112 inStream
, LZMA_PROPS_SIZE
, LZMA_FINISH_END
, &state
, &g_Alloc
);
113 *uncompressedSize
= outProcessed
;