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In vndioctl(), consolidate checks for "open for writes" and "initialized", 

and cover all of the cases we're supposed to cover.
This commit is contained in:
thorpej 1997-06-26 04:16:31 +00:00
parent d69ef9b761
commit 8ad2b19321
1 changed files with 24 additions and 22 deletions
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46
sys/dev/vnd.c
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@ -1,4 +1,4 @@
/* $NetBSD: vnd.c,v 1.42 1997/06/26 04:06:57 thorpej Exp $ */
/* $NetBSD: vnd.c,v 1.43 1997/06/26 04:16:31 thorpej Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
@ -665,8 +665,30 @@ vndioctl(dev, cmd, data, flag, p)
vnd = &vnd_softc[unit];
vio = (struct vnd_ioctl *)data;
switch (cmd) {
/* Must be open for writes for these commands... */
switch (cmd) {
case VNDIOCSET:
case VNDIOCCLR:
case DIOCSDINFO:
case DIOCWDINFO:
case DIOCWLABEL:
if ((flag & FWRITE) == 0)
return (EBADF);
}
/* Must be initialized for these... */
switch (cmd) {
case VNDIOCCLR:
case DIOCSDINFO:
case DIOCWDINFO:
case DIOCGPART:
case DIOCWLABEL:
if ((vnd->sc_flags & VNF_INITED) == 0)
return (ENXIO);
}
switch (cmd) {
case VNDIOCSET:
if (vnd->sc_flags & VNF_INITED)
return (EBUSY);
@ -795,9 +817,6 @@ vndioctl(dev, cmd, data, flag, p)
break;
case VNDIOCCLR:
if ((vnd->sc_flags & VNF_INITED) == 0)
return (ENXIO);
if ((error = vndlock(vnd)) != 0)
return (error);
@ -829,16 +848,10 @@ vndioctl(dev, cmd, data, flag, p)
break;
case DIOCGDINFO:
if ((vnd->sc_flags & VNF_INITED) == 0)
return (ENXIO);
*(struct disklabel *)data = *(vnd->sc_dkdev.dk_label);
break;
case DIOCGPART:
if ((vnd->sc_flags & VNF_INITED) == 0)
return (ENXIO);
((struct partinfo *)data)->disklab = vnd->sc_dkdev.dk_label;
((struct partinfo *)data)->part =
&vnd->sc_dkdev.dk_label->d_partitions[DISKPART(dev)];
@ -846,12 +859,6 @@ vndioctl(dev, cmd, data, flag, p)
case DIOCWDINFO:
case DIOCSDINFO:
if ((vnd->sc_flags & VNF_INITED) == 0)
return (ENXIO);
if ((flag & FWRITE) == 0)
return (EBADF);
if ((error = vndlock(vnd)) != 0)
return (error);
@ -875,11 +882,6 @@ vndioctl(dev, cmd, data, flag, p)
break;
case DIOCWLABEL:
if ((vnd->sc_flags & VNF_INITED) == 0)
return (ENXIO);
if ((flag & FWRITE) == 0)
return (EBADF);
if (*(int *)data != 0)
vnd->sc_flags |= VNF_WLABEL;
else