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Fix numerous bugs in wdsize().

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It closed the wrong device (usually the B partition instead of the C
partition).
It closed a device without having opened it.
It didn't open a device often enough.  This caused swap partitions on
slices other than the first slice looked at to be unavailable for swapping.
It didn't check the device number sufficiently.
This commit is contained in:
Bruce Evans 1995-05-08 16:48:23 +00:00
parent edde522e19
commit dac9a9e66d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=8357
1 changed files with 7 additions and 15 deletions
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22
sys/i386/isa/wd.c
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@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.77 1995/04/24 05:12:29 phk Exp $
* $Id: wd.c,v 1.78 1995/04/30 15:14:16 bde Exp $
*/
/* TODO:
@ -1615,24 +1615,16 @@ wdformat(struct buf *bp)
int
wdsize(dev_t dev)
{
int lunit = dkunit(dev), part = dkpart(dev), val;
struct disk *du;
struct disklabel *lp;
int size;
int lunit;
if (lunit >= NWD || (du = wddrives[lunit]) == NULL) {
lunit = dkunit(dev);
if (lunit >= NWD || dktype(dev) != 0)
return (-1);
}
val = 0;
if (du->dk_state == CLOSED) {
val = wdopen(dkmodpart(dev, RAW_PART), FREAD, S_IFBLK, 0);
dsclose(dev, S_IFBLK, du->dk_slices);
}
if (val != 0 || (lp = dsgetlabel(dev, du->dk_slices)) == NULL) {
du = wddrives[lunit];
if (du == NULL)
return (-1);
}
size = ((int)lp->d_partitions[part].p_size);
return size;
return (dssize(dev, &du->dk_slices, wdopen, wdclose));
}
/*