/*
* Initialize a drive.
*/
int
idopen(dev_t dev, int flags, int fmt, struct proc *p)
{
struct ida_drv *drv;
int part = dkpart(dev);
int unit = dkunit(dev);
struct disklabel label;
int err;
if (unit >= NID || part >= MAXPARTITIONS) /* bounds check */
return(ENXIO);
drv = id_drive[unit];
if (!drv || !(drv->flags & ID_INIT)) /* drive not initialised */
return(ENXIO);
drv->flags |= ID_DEV_OPEN;
/* knock up a label for the whole disk. */
bzero(&label, sizeof label);
label.d_secsize = u_unpack(drv->drv_info.secsize);
label.d_nsectors = u_unpack(drv->drv_info.nsectors);
label.d_ntracks = u_unpack(drv->drv_info.ntracks);
label.d_ncylinders = u_unpack(drv->drv_info.ncylinders);
label.d_secpercyl =
u_unpack(drv->drv_info.ntracks) * u_unpack(drv->drv_info.nsectors);
if (label.d_secpercyl == 0)
label.d_secpercyl = 100; /* prevent accidental division by zero */
label.d_secperunit = u_unpack(drv->drv_info.secperunit);
/* Initialize slice tables. */
if ((err = dsopen("id", dev, fmt, 0, &drv->slices, &label, idstrategy,
(ds_setgeom_t *)NULL, &id_cdevsw)) == NULL) {
return 0;
}
if (!dsisopen(drv->slices)) {
drv->flags &= ~ID_DEV_OPEN;
}
return err;
}
static int
usalo_open(SCSI *usalp, char *device)
{
int busno = usal_scsibus(usalp);
int tgt = usal_target(usalp);
int tlun = usal_lun(usalp);
register int f;
register int b;
register int t;
register int l;
register int nopen = 0;
char devname[64];
if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) {
errno = EINVAL;
if (usalp->errstr)
snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
"Illegal value for busno, target or lun '%d,%d,%d'",
busno, tgt, tlun);
return (-1);
}
if ((device != NULL && *device != '\0') || (busno == -2 && tgt == -2)) {
errno = EINVAL;
if (usalp->errstr)
snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
"Open by 'devname' not supported on this OS");
return (-1);
}
if (usalp->local == NULL) {
usalp->local = malloc(sizeof (struct usal_local));
if (usalp->local == NULL)
return (0);
for (b = 0; b < MAX_SCG; b++) {
for (t = 0; t < MAX_TGT; t++) {
for (l = 0; l < MAX_LUN; l++)
usallocal(usalp)->usalfiles[b][t][l] = (short)-1;
}
}
}
if (busno >= 0 && tgt >= 0 && tlun >= 0) {
snprintf(devname, sizeof (devname),
"/dev/scsi/sc%dd%dl%d", busno, tgt, tlun);
#ifdef USE_DSLIB
dsp = dsopen(devname, O_RDWR);
if (dsp == 0)
return (-1);
#else
f = open(devname, O_RDWR);
if (f < 0) {
if (usalp->errstr)
snprintf(usalp->errstr, SCSI_ERRSTR_SIZE,
"Cannot open '%s'",
devname);
return (-1);
}
usallocal(usalp)->usalfiles[busno][tgt][tlun] = f;
#endif
return (1);
} else {
#ifdef USE_DSLIB
return (-1);
#else
for (b = 0; b < MAX_SCG; b++) {
for (t = 0; t < MAX_TGT; t++) {
/* for (l = 0; l < MAX_LUN; l++) {*/
for (l = 0; l < 1; l++) {
snprintf(devname, sizeof (devname),
"/dev/scsi/sc%dd%dl%d", b, t, l);
f = open(devname, O_RDWR);
if (f >= 0) {
usallocal(usalp)->usalfiles[b][t][l] = (short)f;
nopen++;
}
}
}
}
#endif
}
return (nopen);
}
