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| author | jkh <jkh@FreeBSD.org> | 1994-12-04 03:10:09 +0000 |
|---|---|---|
| committer | jkh <jkh@FreeBSD.org> | 1994-12-04 03:10:09 +0000 |
| commit | 8514c97735447fcb2a9d12493cf3f8a0574a0d5b (patch) | |
| tree | 491b7dee3b77c213934d44b8d5c76483981a4c9f /sys | |
| parent | 4665766ad121fdaf3c1e9598fa25edd3b8ea615d (diff) | |
| download | FreeBSD-src-8514c97735447fcb2a9d12493cf3f8a0574a0d5b.zip FreeBSD-src-8514c97735447fcb2a9d12493cf3f8a0574a0d5b.tar.gz | |
>Originator: Gene Stark
>Description:
If a process attempts to open a floppy tape device when the
device has been configured in the kernel, but did not probe and attach
on bootup, then a panic will occur.
[Review: The current ft situation is a crock, and this only bandaids
an earlier wound inflicted by making the attach conditional. This urgently
requires a review]
Submitted by: gene
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/i386/isa/ft.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/i386/isa/ft.c b/sys/i386/isa/ft.c index 2ab4a77..a1594ad 100644 --- a/sys/i386/isa/ft.c +++ b/sys/i386/isa/ft.c @@ -17,7 +17,7 @@ * POSSIBILITY OF SUCH DAMAGE. * * ft.c - QIC-40/80 floppy tape driver - * $Id: ft.c,v 1.13 1994/10/23 21:27:14 wollman Exp $ + * $Id: ft.c,v 1.14 1994/11/15 14:34:42 bde Exp $ * * 06/07/94 v0.9 ++sg * Tape stuck on segment problem should be gone. Re-wrote buffering @@ -2057,6 +2057,8 @@ ftopen(dev_t dev, int arg2) { if (ftu >= NFT) return(ENXIO); fdc = ft_data[ftu].fdc; + if ((fdc == NULL) || (ft_data[ftu].type == NO_TYPE)) + return(ENXIO); /* check for controller already busy with tape */ if (fdc->flags & FDC_TAPE_BUSY) return(EBUSY); |
