EMILE/libiso9660/iso9660_readdir.c

35 lines
734 B
C

/*
*
* (c) 2005 Laurent Vivier <Laurent@lvivier.info>
*
*/
#include <stddef.h>
#include "libiso9660.h"
#include "iso9660.h"
struct iso_directory_record *iso9660_readdir(stream_DIR *_dir)
{
iso9660_DIR *dir = (iso9660_DIR*)_dir;
struct iso_directory_record *idr;
if (dir->index > 2048 - offsetof(struct iso_directory_record, name[0]))
{
if (dir->len <= 0)
return NULL;
dir->volume->device->read_sector(dir->volume->device->data, dir->extent, dir->buffer, sizeof (dir->buffer));
dir->len -= sizeof (dir->buffer);
dir->extent++;
dir->index = 0;
}
idr = (struct iso_directory_record *) &dir->buffer[dir->index];
if (idr->length[0] == 0)
return NULL;
dir->index += dir->buffer[dir->index];
return idr;
}