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correct computing of size of buffer subset

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This commit is contained in:
Laurent Vivier 2008-03-17 23:25:30 +00:00
parent 64bc718251
commit 1272867d0c
1 changed files with 1 additions and 3 deletions
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4
libblock/block_read.c
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@ -4,7 +4,6 @@
*
*/
#include <stdio.h>
#include <string.h>
#include "libblock.h"
@ -24,7 +23,6 @@ size_t block_read(block_FILE *file, void *ptr, size_t size)
file->offset / blocksize) / file->buffer_size;
block_offset = (file->base - block_nb * file->buffer_size) *
blocksize + file->offset;
if (block_nb != file->current)
{
ret = file->device->read_sector(file->device->data,
@ -36,7 +34,7 @@ size_t block_read(block_FILE *file, void *ptr, size_t size)
file->current = block_nb;
}
part = file->buffer_size - block_offset;
part = file->buffer_size * blocksize - block_offset;
if (part > size)
part = size;
memcpy(ptr, file->buffer + block_offset, part);