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Fake the geometry to be 32 sectors * 64 heads * (vn->sc_size / 2048)

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cylinders instead of vn->sc_size * 1 * 1.

Remove unnecessary tests of the unit numbern vnioctl().
This commit is contained in:
Bruce Evans 1995-03-04 11:08:26 +00:00
parent 80eee75ed9
commit 17fb427c08
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=6879
1 changed files with 6 additions and 13 deletions
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19
sys/dev/vn/vn.c
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@ -64,7 +64,7 @@
/* default is to have 8 VN's */
#if NVN < 8
#undef NVN
#define NVN 8
#define NVN 8
#endif
#include <sys/param.h>
@ -186,12 +186,12 @@ vnopen(dev_t dev, int flags, int mode, struct proc *p)
/* Build label for whole disk. */
bzero(&label, sizeof label);
label.d_secsize = DEV_BSIZE;
label.d_nsectors = vn->sc_size;
label.d_ntracks = 1;
label.d_ncylinders = 1;
label.d_secpercyl = label.d_nsectors;
label.d_nsectors = 32;
label.d_ntracks = 64;
label.d_ncylinders = vn->sc_size / (32 * 64);
label.d_secpercyl = 32 * 64;
label.d_secperunit = label.d_partitions[RAW_PART].p_size
= label.d_nsectors;
= vn->sc_size;
return (dsopen("vn", dev, mode, &vn->sc_slices, &label,
vnstrategy, (ds_setgeom_t *)NULL));
@ -421,11 +421,6 @@ vnioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
#endif
#ifdef TEST_LABELLING
/*
* XXX test is unnecessary?
*/
if (unit >= NVN)
return (ENXIO);
vn = vn_softc[unit];
if (vn->sc_slices != NULL) {
error = dsioctl(dev, cmd, data, flag, vn->sc_slices,
@ -440,8 +435,6 @@ vnioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
if (unit >= NVN)
return (ENXIO);
vn = vn_softc[unit];
vio = (struct vn_ioctl *)data;