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open_drive: Add support for more than 32 devices of a particular kind.

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Requested by:	Bernd Walter <ticso@cicely8.cicely.de>
		Cor Bosman <cor@xs4all.net>
		Kai Storbeck <kai@xs4all.net>
		Joe Greco <jgreco@ns.sol.net>

	     Add support for Compaq SMART-2 RAID (idad) as storage
	     device for Vinum subdisks.

Reported by:	Aaron Hill <hillaa@hotmail.com>
This commit is contained in:
Greg Lehey 2000-12-20 05:15:50 +00:00
parent 4e1cd4ad9f
commit ed4963f8e1
1 changed files with 11 additions and 6 deletions
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17
sys/dev/vinum/vinumio.c
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@ -87,6 +87,9 @@ open_drive(struct drive *drive, struct proc *p, int verbose)
else if (bcmp(dname, "amrd", 4) == 0) {
devmajor = 133;
dname += 2;
} else if (bcmp(dname, "idad", 4) == 0) {
devmajor = 109;
dname += 2;
} else
return ENODEV;
dname += 2; /* point past */
@ -110,14 +113,16 @@ open_drive(struct drive *drive, struct proc *p, int verbose)
if (((dname[1] < '1') || (dname[1] > '4')) /* invalid slice */
||((dname[2] < 'a') || (dname[2] > 'h'))) /* or invalid partition */
return ENODEV;
devminor = (unit << 3) /* unit */
+(dname[2] - 'a') /* partition */
+((dname[1] - '0' + 1) << 16); /* slice */
devminor = ((unit & 31) << 3) /* unit */
+(dname[2] - 'a') /* partition */
+((dname[1] - '0' + 1) << 16) /* slice */
+((unit & ~31) << 16); /* high-order unit bits */
} else { /* compatibility partition */
if ((*dname < 'a') || (*dname > 'h')) /* or invalid partition */
return ENODEV;
devminor = (*dname - 'a') /* partition */
+(unit << 3); /* unit */
+((unit & 31) << 3) /* unit */
+((unit & ~31) << 16); /* high-order unit bits */
}
drive->dev = makedev(devmajor, devminor); /* find the device */
@ -406,8 +411,8 @@ check_drive(char *devicename)
if (read_drive_label(drive, 0) == DL_OURS) { /* one of ours */
for (i = 0; i < vinum_conf.drives_allocated; i++) { /* see if the name already exists */
if ((i != driveno) /* not this drive */
&&(DRIVE[i].state != drive_unallocated) /* and it's allocated */
&&(strcmp(DRIVE[i].label.name,
&&(DRIVE[i].state != drive_unallocated) /* and it's allocated */
&&(strcmp(DRIVE[i].label.name,
DRIVE[driveno].label.name) == 0)) { /* and it has the same name */
struct drive *mydrive = &DRIVE[i];