//------------------------------------------------------------------------
// rfcntl -- control the remote file server access system
//------------------------------------------------------------------------
int
rfcntl(struct devsw *devptr, int func, char *addr, char *addr2)
{
long junk;
int len;
junk = 0L;
switch (func) {
case RFCLEAR:
// clear port associated with rfserver
control(Rf.device, DG_CLEAR, 0);
return OK;
// Universal file manipulation functions
case FLACCESS:
return rfmkpac(FS_ACCESS, addr, &junk, (char *)&junk, 0);
case FLREMOVE:
return rfmkpac(FS_UNLINK, addr, &junk, NULLSTR, 0);
case FLRENAME:
len = strlen(addr2) + 1;
return rfmkpac(FS_RENAME, addr, &junk, addr2, len);
default:
break;
}
return SYSERR;
}
/*------------------------------------------------------------------------
* rfclose -- close a remote file by deallocating pseudo device
*------------------------------------------------------------------------
*/
int
rfclose(struct devsw *pdev)
{
struct rfblk *rfptr;
char junk; /* argument to rfmkpac; not really used */
rfptr = (struct rfblk *)pdev->dvioblk;
if (rfptr->rf_state == RFREE)
return SYSERR;
wait(rfptr->rf_mutex);
junk = 0L; /* 0L is long zero constant */
rfmkpac(FS_CLOSE, rfptr->rf_name, &junk, (u_char *)&junk, 0);
rfptr->rf_state = RFREE;
signal(rfptr->rf_mutex);
return OK;
}
/*------------------------------------------------------------------------
* rfio -- perform input or output using remote file server
*------------------------------------------------------------------------
*/
rfio(struct devsw *pdev, int rop, u_char *buff, unsigned len)
{
struct rfblk *rfptr;
int retcode;
rfptr = (struct rfblk *)pdev->dvioblk;
wait(rfptr->rf_mutex);
if (rfptr->rf_state == RFREE) {
signal(rfptr->rf_mutex);
return SYSERR;
}
retcode = rfmkpac(rop, rfptr->rf_name, (char *)&rfptr->rf_pos,
buff, len);
signal(rfptr->rf_mutex);
return retcode;
}
//------------------------------------------------------------------------
// rfio -- perform input or output using remote file server
//------------------------------------------------------------------------
int
rfio(struct devsw *devptr, int rop, char *buff, int len)
{
struct rfblk *rfptr;
int retcode;
rfptr = (struct rfblk *)devptr->iobuf;
wait(rfptr->rf_mutex);
if (len < 0 || rfptr->rf_state == RFREE) {
signal(rfptr->rf_mutex);
return SYSERR;
}
retcode = rfmkpac(rop, rfptr->rf_name, &rfptr->rf_pos, buff, len);
signal(rfptr->rf_mutex);
return retcode;
}