/* pf_read/pf_block is used to read data.
* XXX A access should set one and only one of them */
- int (*pf_read) ( access_t *, uint8_t *, int ); /* Return -1 if no data yet, 0 if no more data, else real data read */
+ ssize_t (*pf_read) ( access_t *, uint8_t *, size_t ); /* Return -1 if no data yet, 0 if no more data, else real data read */
block_t *(*pf_block)( access_t * ); /* return a block of data in his 'natural' size, NULL if not yet data or eof */
/* Called for each seek.