diff options
Diffstat (limited to 'lib/decompress_bunzip2.c')
| -rw-r--r-- | lib/decompress_bunzip2.c | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/lib/decompress_bunzip2.c b/lib/decompress_bunzip2.c index 31c5f7675fbf..ca736166f100 100644 --- a/lib/decompress_bunzip2.c +++ b/lib/decompress_bunzip2.c @@ -34,7 +34,7 @@ Phone (337) 232-1234 or 1-800-738-2226 Fax (337) 232-1297 - http://www.hospiceacadiana.com/ + https://www.hospiceacadiana.com/ Manuel */ @@ -51,6 +51,7 @@ #endif /* STATIC */ #include <linux/decompress/mm.h> +#include <linux/crc32poly.h> #ifndef INT_MAX #define INT_MAX 0x7fffffff @@ -79,7 +80,7 @@ /* This is what we know about each Huffman coding group */ struct group_data { - /* We have an extra slot at the end of limit[] for a sentinal value. */ + /* We have an extra slot at the end of limit[] for a sentinel value. */ int limit[MAX_HUFCODE_BITS+1]; int base[MAX_HUFCODE_BITS]; int permute[MAX_SYMBOLS]; @@ -92,8 +93,8 @@ struct bunzip_data { /* State for interrupting output loop */ int writeCopies, writePos, writeRunCountdown, writeCount, writeCurrent; /* I/O tracking data (file handles, buffers, positions, etc.) */ - int (*fill)(void*, unsigned int); - int inbufCount, inbufPos /*, outbufPos*/; + long (*fill)(void*, unsigned long); + long inbufCount, inbufPos /*, outbufPos*/; unsigned char *inbuf /*,*outbuf*/; unsigned int inbufBitCount, inbufBits; /* The CRC values stored in the block header and calculated from the @@ -184,7 +185,7 @@ static int INIT get_next_block(struct bunzip_data *bd) if (get_bits(bd, 1)) return RETVAL_OBSOLETE_INPUT; origPtr = get_bits(bd, 24); - if (origPtr > dbufSize) + if (origPtr >= dbufSize) return RETVAL_DATA_ERROR; /* mapping table: if some byte values are never used (encoding things like ascii text), the compression code removes the gaps to have fewer @@ -231,7 +232,8 @@ static int INIT get_next_block(struct bunzip_data *bd) RUNB) */ symCount = symTotal+2; for (j = 0; j < groupCount; j++) { - unsigned char length[MAX_SYMBOLS], temp[MAX_HUFCODE_BITS+1]; + unsigned char length[MAX_SYMBOLS]; + unsigned short temp[MAX_HUFCODE_BITS+1]; int minLen, maxLen, pp; /* Read Huffman code lengths for each symbol. They're stored in a way similar to mtf; record a starting @@ -336,7 +338,7 @@ static int INIT get_next_block(struct bunzip_data *bd) pp <<= 1; base[i+1] = pp-(t += temp[i]); } - limit[maxLen+1] = INT_MAX; /* Sentinal value for + limit[maxLen+1] = INT_MAX; /* Sentinel value for * reading next sym. */ limit[maxLen] = pp+temp[maxLen]-1; base[minLen] = 0; @@ -384,12 +386,12 @@ static int INIT get_next_block(struct bunzip_data *bd) bd->inbufBits = (bd->inbufBits << 8)|bd->inbuf[bd->inbufPos++]; bd->inbufBitCount += 8; - }; + } bd->inbufBitCount -= hufGroup->maxLen; j = (bd->inbufBits >> bd->inbufBitCount)& ((1 << hufGroup->maxLen)-1); got_huff_bits: - /* Figure how how many bits are in next symbol and + /* Figure how many bits are in next symbol and * unget extras */ i = hufGroup->minLen; while (j > limit[i]) @@ -617,7 +619,7 @@ decode_next_byte: goto decode_next_byte; } -static int INIT nofill(void *buf, unsigned int len) +static long INIT nofill(void *buf, unsigned long len) { return -1; } @@ -625,8 +627,8 @@ static int INIT nofill(void *buf, unsigned int len) /* Allocate the structure, read file header. If in_fd ==-1, inbuf must contain a complete bunzip file (len bytes long). If in_fd!=-1, inbuf and len are ignored, and data is read from file handle into temporary buffer. */ -static int INIT start_bunzip(struct bunzip_data **bdp, void *inbuf, int len, - int (*fill)(void*, unsigned int)) +static int INIT start_bunzip(struct bunzip_data **bdp, void *inbuf, long len, + long (*fill)(void*, unsigned long)) { struct bunzip_data *bd; unsigned int i, j, c; @@ -654,7 +656,7 @@ static int INIT start_bunzip(struct bunzip_data **bdp, void *inbuf, int len, for (i = 0; i < 256; i++) { c = i << 24; for (j = 8; j; j--) - c = c&0x80000000 ? (c << 1)^0x04c11db7 : (c << 1); + c = c&0x80000000 ? (c << 1)^(CRC32_POLY_BE) : (c << 1); bd->crc32Table[i] = c; } @@ -675,11 +677,11 @@ static int INIT start_bunzip(struct bunzip_data **bdp, void *inbuf, int len, /* Example usage: decompress src_fd to dst_fd. (Stops at end of bzip2 data, not end of file.) */ -STATIC int INIT bunzip2(unsigned char *buf, int len, - int(*fill)(void*, unsigned int), - int(*flush)(void*, unsigned int), +STATIC int INIT bunzip2(unsigned char *buf, long len, + long (*fill)(void*, unsigned long), + long (*flush)(void*, unsigned long), unsigned char *outbuf, - int *pos, + long *pos, void(*error)(char *x)) { struct bunzip_data *bd; @@ -743,12 +745,12 @@ exit_0: } #ifdef PREBOOT -STATIC int INIT decompress(unsigned char *buf, int len, - int(*fill)(void*, unsigned int), - int(*flush)(void*, unsigned int), - unsigned char *outbuf, - int *pos, - void(*error)(char *x)) +STATIC int INIT __decompress(unsigned char *buf, long len, + long (*fill)(void*, unsigned long), + long (*flush)(void*, unsigned long), + unsigned char *outbuf, long olen, + long *pos, + void (*error)(char *x)) { return bunzip2(buf, len - 4, fill, flush, outbuf, pos, error); } |