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| author | phk <phk@FreeBSD.org> | 1999-10-08 18:25:19 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 1999-10-08 18:25:19 +0000 |
| commit | 9e2a2cf3ab29cc97c0af288f7a5b5ae347c0c486 (patch) | |
| tree | beb2e2b9dade0ca94df3e4ff399fe7d5ee723667 /sys/miscfs | |
| parent | b98112df4e080f653ec9546aaf9b2ddd575a04f4 (diff) | |
| download | FreeBSD-src-9e2a2cf3ab29cc97c0af288f7a5b5ae347c0c486.zip FreeBSD-src-9e2a2cf3ab29cc97c0af288f7a5b5ae347c0c486.tar.gz | |
Add back sysctl vfs.enable_userblk_io
Diffstat (limited to 'sys/miscfs')
| -rw-r--r-- | sys/miscfs/specfs/spec_vnops.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/miscfs/specfs/spec_vnops.c b/sys/miscfs/specfs/spec_vnops.c index 0384da1..f6f33be 100644 --- a/sys/miscfs/specfs/spec_vnops.c +++ b/sys/miscfs/specfs/spec_vnops.c @@ -120,6 +120,9 @@ VNODEOP_SET(spec_vnodeop_opv_desc); static int bdev_buffered = 1; SYSCTL_INT(_vfs, OID_AUTO, bdev_buffered, CTLFLAG_RW, &bdev_buffered, 0, ""); +static int enable_userblk_io = 1; +SYSCTL_INT(_vfs, OID_AUTO, enable_userblk_io, CTLFLAG_RW, &enable_userblk_io, 0, ""); + int spec_vnoperate(ap) struct vop_generic_args /* { @@ -331,6 +334,8 @@ spec_bufread(ap) int seqcount = ap->a_ioflag >> 16; dev_t dev; + if (!enable_userblk_io) + return (EINVAL); if (uio->uio_offset < 0) return (EINVAL); dev = vp->v_rdev; @@ -453,6 +458,8 @@ spec_bufwrite(ap) register int n, on; int error = 0; + if (!enable_userblk_io) + return (EINVAL); if (uio->uio_resid == 0) return (0); if (uio->uio_offset < 0) |
