/* lflread.c - lflread */

#include 

/*------------------------------------------------------------------------
 * lflread  -  Read from a previously opened local file
 *------------------------------------------------------------------------
 */
devcall lflread (
          struct dentry *devptr,        /* Entry in device switch table */
          char  *buff,                  /* Buffer to hold bytes         */
          int32 count                   /* Max bytes to read            */
        )
{
        uint32  numread;                /* Number of bytes read         */
        int32   nxtbyte;                /* Character or SYSERR/EOF      */

        if (count < 0) {
                return SYSERR;
        }

        /* Iterate and use lflgetc to read individual bytes */

        for (numread=0 ; numread < count ; numread++) {
                nxtbyte = lflgetc(devptr);
                if (nxtbyte == SYSERR) {
                        return SYSERR;
                } else if (nxtbyte == EOF) {    /* EOF before finished */
                    if (numread == 0) {
                        return EOF;
                    } else {
                        return numread;
                    }
                } else {
                        *buff++ = (char) (0xff & nxtbyte);
                }
        }
        return numread;
}