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A tentative agreement has been reached in regards to a procedure

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to remove 'b'lock devices.  The agreement is, essentially, that
    block devices will be collapsed into character devices as a first
    step (though I don't particularly agree), and raw device names 'rxxx'
    will become simply 'xxx' in devfs in the second step (i.e. no 'rxxx'
    names will exist).  The renaming will not effect the original /dev
    and the expectation is that devfs will eventually (but not immediately)
    become the standard way to access devices in the system.

    If it is determined that a reimplementation of block device access
    characteristics is beneficial, a number of alternatives will
    be possible that do not involve resurrecting the 'b'lock device class.
    For example, an ioctl() that might be made on an open character device
    descriptor or a generic buffered overlay device.

    This commit removes the blockdev disablement sysctl which does not
    apply to the solution that was reached.
This commit is contained in:
Matthew Dillon 1999-10-20 06:31:49 +00:00
parent 96df778049
commit dfbdd7d2b3
2 changed files with 0 additions and 14 deletions
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7
sys/fs/specfs/spec_vnops.c
View File

@ -120,9 +120,6 @@ VNODEOP_SET(spec_vnodeop_opv_desc);
static int bdev_buffered = 0;
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 /* {
@ -334,8 +331,6 @@ 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;
@ -458,8 +453,6 @@ 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)

7
sys/miscfs/specfs/spec_vnops.c
View File

@ -120,9 +120,6 @@ VNODEOP_SET(spec_vnodeop_opv_desc);
static int bdev_buffered = 0;
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 /* {
@ -334,8 +331,6 @@ 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;
@ -458,8 +453,6 @@ 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)