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freebsd-skq/sys/dev/vn/vn.c

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The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah Hdr: vn.c 1.13 94/04/02
*
Removed an unused devfs variable again. Added $Id$.
1996-03-28 15:25:43 +00:00
* from: @(#)vn.c 8.6 (Berkeley) 4/1/94
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
*/
/*
* Vnode disk driver.
*
* Block/character interface to a vnode. Allows one to treat a file
* as a disk (e.g. build a filesystem in it, mount it, etc.).
*
* NOTE 1: This uses the VOP_BMAP/VOP_STRATEGY interface to the vnode
* instead of a simple VOP_RDWR. We do this to avoid distorting the
* local buffer cache.
*
* NOTE 2: There is a security issue involved with this driver.
* Once mounted all access to the contents of the "mapped" file via
* the special file is controlled by the permissions on the special
* file, the protection of the mapped file is ignored (effectively,
* by using root credentials in all transactions).
*
* NOTE 3: Doesn't interact with leases, should it?
*/
#include "vn.h"
Make all file-system (MFS, FFS, NFS, LFS, DEVFS) related option new-style. This introduce an xxxFS_BOOT for each of the rootable filesystems. (Presently not required, but encouraged to allow a smooth move of option *FS to opt_dontuse.h later.) LFS is temporarily disabled, and will be re-enabled tomorrow.
1998-01-24 02:54:56 +00:00
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
#include <sys/param.h>
#include <sys/systm.h>
Avoid a panic if vn is configured as swapdev. Seems to work fine.
1994-12-06 06:47:32 +00:00
#include <sys/kernel.h>
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/vnode.h>
Don't #include <sys/fcntl.h> in <sys/file.h> if KERNEL is defined. Fixed everything that depended on getting fcntl.h stuff from the wrong place. Most things don't depend on file.h stuff at all.
1997-03-23 03:37:54 +00:00
#include <sys/fcntl.h>
Divorce "dev_t" from the "major|minor" bitmap, which is now called udev_t in the kernel but still called dev_t in userland. Provide functions to manipulate both types: major() umajor() minor() uminor() makedev() umakedev() dev2udev() udev2dev() For now they're functions, they will become in-line functions after one of the next two steps in this process. Return major/minor/makedev to macro-hood for userland. Register a name in cdevsw[] for the "filedescriptor" driver. In the kernel the udev_t appears in places where we have the major/minor number combination, (ie: a potential device: we may not have the driver nor the device), like in inodes, vattr, cdevsw registration and so on, whereas the dev_t appears where we carry around a reference to a actual device. In the future the cdevsw and the aliased-from vnode will be hung directly from the dev_t, along with up to two softc pointers for the device driver and a few houskeeping bits. This will essentially replace the current "alias" check code (same buck, bigger bang). A little stunt has been provided to try to catch places where the wrong type is being used (dev_t vs udev_t), if you see something not working, #undef DEVT_FASCIST in kern/kern_conf.c and see if it makes a difference. If it does, please try to track it down (many hands make light work) or at least try to reproduce it as simply as possible, and describe how to do that. Without DEVT_FASCIST I belive this patch is a no-op. Stylistic/posixoid comments about the userland view of the <sys/*.h> files welcome now, from userland they now contain the end result. Next planned step: make all dev_t's refer to the same devsw[] which means convert BLK's to CHR's at the perimeter of the vnodes and other places where they enter the game (bootdev, mknod, sysctl).
1999-05-11 19:55:07 +00:00
#include <sys/conf.h>
Remove YF comments.
1995-02-25 16:48:28 +00:00
#include <sys/disklabel.h>
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
#include <sys/diskslice.h>
Continue implementing disk slices and labels for the vn driver. Everything is supposed to work except "media removal" (shutting down the vn driver) while some partitions are open. Fix some errnos: return ENOTTY, not ENXIO for unknown ioctls; return ENODEV, not ENXIO for the unsupported dump operation.
1994-12-16 16:50:15 +00:00
#include <sys/stat.h>
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
1995-12-08 11:19:42 +00:00
#include <sys/conf.h>
Convert vn.c into a module (loadable and static).
1999-01-21 17:17:02 +00:00
#include <sys/module.h>
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
#include <sys/vnioctl.h>
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
#include <vm/vm.h>
#include <vm/vm_prot.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <vm/vm_pageout.h>
#include <vm/swap_pager.h>
#include <vm/vm_extern.h>
#include <vm/vm_zone.h>
Add changes and code to implement a functional DEVFS. This code will be turned on with the TWO options DEVFS and SLICE. (see LINT) Two labels PRE_DEVFS_SLICE and POST_DEVFS_SLICE will deliniate these changes. /dev will be automatically mounted by init (thanks phk) on bootup. See /sys/dev/slice/slice.4 for more info. All code should act the same without these options enabled. Mike Smith, Poul Henning Kamp, Soeren, and a few dozen others This code does not support the following: bad144 handling. Persistance. (My head is still hurting from the last time we discussed this) ATAPI flopies are not handled by the SLICE code yet. When this code is running, all major numbers are arbitrary and COULD be dynamically assigned. (this is not done, for POLA only) Minor numbers for disk slices ARE arbitray and dynamically assigned.
1998-04-19 23:32:49 +00:00
static d_ioctl_t vnioctl;
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
1995-12-08 11:19:42 +00:00
static d_open_t vnopen;
static d_close_t vnclose;
static d_psize_t vnsize;
static d_strategy_t vnstrategy;
OK, that's it.. That's EVERY SINGLE driver that has an entry in conf.c.. my next trick will be to define cdevsw[] and bdevsw[] as empty arrays and remove all those DAMNED defines as well.. Each of these drivers has a SYSINIT linker set entry that comes in very early.. and asks teh driver to add it's own entry to the two devsw[] tables. some slight reworking of the commits from yesterday (added the SYSINIT stuff and some usually wrong but token DEVFS entries to all these devices. BTW does anyone know where the 'ata' entries in conf.c actually reside? seems we don't actually have a 'ataopen() etc... If you want to add a new device in conf.c please make sure I know so I can keep it up to date too.. as before, this is all dependent on #if defined(JREMOD) (and #ifdef DEVFS in parts)
1995-11-29 10:49:16 +00:00
#define CDEV_MAJOR 43
#define BDEV_MAJOR 15
There is no such thing any more as "struct bdevsw". There is only cdevsw (which should be renamed in a later edit to deventry or something). cdevsw contains the union of what were in both bdevsw an cdevsw entries. The bdevsw[] table stiff exists and is a second pointer to the cdevsw entry of the device. it's major is in d_bmaj rather than d_maj. some cleanup still to happen (e.g. dsopen now gets two pointers to the same cdevsw struct instead of one to a bdevsw and one to a cdevsw). rawread()/rawwrite() went away as part of this though it's not strictly the same patch, just that it involves all the same lines in the drivers. cdroms no longer have write() entries (they did have rawwrite (?)). tapes no longer have support for bdev operations. Reviewed by: Eivind Eklund and Mike Smith Changes suggested by eivind.
1998-07-04 22:30:26 +00:00
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
/*
* cdevsw
* D_DISK we want to look like a disk
* ( D_NOCLUSTERRW removed - clustering should be ok )
* D_CANFREE We support B_FREEBUF
*/
There is no such thing any more as "struct bdevsw". There is only cdevsw (which should be renamed in a later edit to deventry or something). cdevsw contains the union of what were in both bdevsw an cdevsw entries. The bdevsw[] table stiff exists and is a second pointer to the cdevsw entry of the device. it's major is in d_bmaj rather than d_maj. some cleanup still to happen (e.g. dsopen now gets two pointers to the same cdevsw struct instead of one to a bdevsw and one to a cdevsw). rawread()/rawwrite() went away as part of this though it's not strictly the same patch, just that it involves all the same lines in the drivers. cdroms no longer have write() entries (they did have rawwrite (?)). tapes no longer have support for bdev operations. Reviewed by: Eivind Eklund and Mike Smith Changes suggested by eivind.
1998-07-04 22:30:26 +00:00
static struct cdevsw vn_cdevsw = {
This commit should be a extensive NO-OP: Reformat and initialize correctly all "struct cdevsw". Initialize the d_maj and d_bmaj fields. The d_reset field was not removed, although it is never used. I used a program to do most of this, so all the files now use the same consistent format. Please keep it that way. Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00
/* open */ vnopen,
/* close */ vnclose,
/* read */ physread,
/* write */ physwrite,
/* ioctl */ vnioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ vnstrategy,
/* name */ "vn",
Now a dev_t is a pointer to struct specinfo which is shared by all specdev vnodes referencing this device. Details: cdevsw->d_parms has been removed, the specinfo is available now (== dev_t) and the driver should modify it directly when applicable, and the only driver doing so, does so: vn.c. I am not sure the logic in checking for "<" was right before, and it looks even less so now. An intial pool of 50 struct specinfo are depleted during early boot, after that malloc had better work. It is likely that fewer than 50 would do. Hashing is done from udev_t to dev_t with a prime number remainder hash, experiments show no better hash available for decent cost (MD5 is only marginally better) The prime number used should not be close to a power of two, we use 83 for now. Add new checkalias2() to get around the loss of info from dev2udev() in bdevvp(); The aliased vnodes are hung on a list straight of the dev_t, and speclisth[SPECSZ] is unused. The sharing of struct specinfo means that the v_specnext moves into the vnode which grows by 4 bytes. Don't use a VBLK dev_t which doesn't make sense in MFS, now we hang a dummy cdevsw on B/Cmaj 253 so that things look sane. Storage overhead from all of this is O(50k). Bump __FreeBSD_version to 400009 The next step will add the stuff needed so device-drivers can start to hang things from struct specinfo
1999-07-20 09:47:55 +00:00
/* parms */ noparms,
This commit should be a extensive NO-OP: Reformat and initialize correctly all "struct cdevsw". Initialize the d_maj and d_bmaj fields. The d_reset field was not removed, although it is never used. I used a program to do most of this, so all the files now use the same consistent format. Please keep it that way. Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00
/* maj */ CDEV_MAJOR,
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
/* dump */ nodump,
This commit should be a extensive NO-OP: Reformat and initialize correctly all "struct cdevsw". Initialize the d_maj and d_bmaj fields. The d_reset field was not removed, although it is never used. I used a program to do most of this, so all the files now use the same consistent format. Please keep it that way. Vinum and i4b not modified, patches emailed to respective authors.
1999-05-30 16:53:49 +00:00
/* psize */ vnsize,
/* flags */ D_DISK|D_CANFREE,
/* maxio */ 0,
/* bmaj */ BDEV_MAJOR
};
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
1995-12-08 11:19:42 +00:00
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
#define getvnbuf() \
((struct buf *)malloc(sizeof(struct buf), M_DEVBUF, M_WAITOK))
#define putvnbuf(bp) \
free((caddr_t)(bp), M_DEVBUF)
struct vn_softc {
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
int sc_unit;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
int sc_flags; /* flags */
int sc_size; /* size of vn, sc_secsize scale */
int sc_secsize; /* sector size */
Add changes and code to implement a functional DEVFS. This code will be turned on with the TWO options DEVFS and SLICE. (see LINT) Two labels PRE_DEVFS_SLICE and POST_DEVFS_SLICE will deliniate these changes. /dev will be automatically mounted by init (thanks phk) on bootup. See /sys/dev/slice/slice.4 for more info. All code should act the same without these options enabled. Mike Smith, Poul Henning Kamp, Soeren, and a few dozen others This code does not support the following: bad144 handling. Persistance. (My head is still hurting from the last time we discussed this) ATAPI flopies are not handled by the SLICE code yet. When this code is running, all major numbers are arbitrary and COULD be dynamically assigned. (this is not done, for POLA only) Minor numbers for disk slices ARE arbitray and dynamically assigned.
1998-04-19 23:32:49 +00:00
struct diskslices *sc_slices;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
struct vnode *sc_vp; /* vnode if not NULL */
vm_object_t sc_object; /* backing object if not NULL */
struct ucred *sc_cred; /* credentials */
int sc_maxactive; /* max # of active requests */
struct buf sc_tab; /* transfer queue */
u_long sc_options; /* options */
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
SLIST_ENTRY(vn_softc) sc_list;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
};
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
static SLIST_HEAD(, vn_softc) vn_list;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
/* sc_flags */
#define VNF_INITED 0x01
Staticize.
1995-12-09 20:34:16 +00:00
static u_long vn_options;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
#define IFOPT(vn,opt) if (((vn)->sc_options|vn_options) & (opt))
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Staticize.
1995-12-09 20:34:16 +00:00
static int vnsetcred (struct vn_softc *vn, struct ucred *cred);
static void vnclear (struct vn_softc *vn);
Convert vn.c into a module (loadable and static).
1999-01-21 17:17:02 +00:00
static int vn_modevent (module_t, int, void *);
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
static int vniocattach_file (struct vn_softc *, struct vn_ioctl *, dev_t dev, int flag, struct proc *p);
static int vniocattach_swap (struct vn_softc *, struct vn_ioctl *, dev_t dev, int flag, struct proc *p);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
1995-12-08 11:19:42 +00:00
static int
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
vnclose(dev_t dev, int flags, int mode, struct proc *p)
{
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
struct vn_softc *vn = dev->si_drv1;
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn, VN_LABELS)
if (vn->sc_slices != NULL)
dsclose(dev, mode, vn->sc_slices);
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
return (0);
}
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
static struct vn_softc *
vnfindvn(dev_t dev)
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
{
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
int unit;
Less bogus allocation of softc to avoid races. Thanks for the hint David!
1995-03-01 05:05:21 +00:00
struct vn_softc *vn;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
unit = dkunit(dev);
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
vn = dev->si_drv1;
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
if (!vn) {
SLIST_FOREACH(vn, &vn_list, sc_list) {
if (vn->sc_unit == unit) {
dev->si_drv1 = vn;
break;
}
}
}
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
if (!vn) {
vn = malloc(sizeof *vn, M_DEVBUF, M_WAITOK);
if (!vn)
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
return (NULL);
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
bzero(vn, sizeof *vn);
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
vn->sc_unit = unit;
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
dev->si_drv1 = vn;
make_dev(&vn_cdevsw, 0,
UID_ROOT, GID_OPERATOR, 0640, "vn%d", unit);
SLIST_INSERT_HEAD(&vn_list, vn, sc_list);
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
}
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
return (vn);
}
static int
vnopen(dev_t dev, int flags, int mode, struct proc *p)
{
int unit;
struct vn_softc *vn;
unit = dkunit(dev);
vn = dev->si_drv1;
if (!vn)
vn = vnfindvn(dev);
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn, VN_FOLLOW)
Use devtoname() to print dev_t's instead of casting them to long or u_long for misprinting in %lx format.
1999-08-23 20:35:21 +00:00
printf("vnopen(%s, 0x%x, 0x%x, %p)\n",
devtoname(dev), flags, mode, (void *)p);
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn, VN_LABELS) {
if (vn->sc_flags & VNF_INITED) {
struct disklabel label;
/* Build label for whole disk. */
bzero(&label, sizeof label);
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
label.d_secsize = vn->sc_secsize;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
label.d_nsectors = 32;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
label.d_ntracks = 64 / (vn->sc_secsize / DEV_BSIZE);
label.d_secpercyl = label.d_nsectors * label.d_ntracks;
label.d_ncylinders = vn->sc_size / label.d_secpercyl;
label.d_secperunit = vn->sc_size;
label.d_partitions[RAW_PART].p_size = vn->sc_size;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
Added a flags arg to dsopen() and updated drivers. The DSO_ONESLICE and DSO_NOLABELS flags prevent searching for slices and labels respectively. Current drivers don't set these flags. When DSO_NOLABELS is set, the in-core label for the whole disk is cloned to create an in-core label for each slice. This gives the correct result (a good in-core label for the compatibility slice) if DSO_ONESLICE is set or only one slice is found, but usually gives broken labels otherwise, so DSO_ONESLICE should be set if DSO_NOLABELS is set.
1998-07-30 15:16:06 +00:00
return (dsopen("vn", dev, mode, 0, &vn->sc_slices,
Spring cleaning around strategy and disklabels/slices: Introduce BUF_STRATEGY(struct buf *, int flag) macro, and use it throughout. please see comment in sys/conf.h about the flag argument. Remove strategy argument from all the diskslice/label/bad144 implementations, it should be found from the dev_t. Remove bogus and unused strategy1 routines. Remove open/close arguments from dssize(). Pick them up from dev_t. Remove unused and unfinished setgeom support from diskslice/label/bad144 code.
1999-08-14 11:40:51 +00:00
&label));
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
}
Remove trailing whitespace.
1995-05-30 08:16:23 +00:00
if (dkslice(dev) != WHOLE_DISK_SLICE ||
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
dkpart(dev) != RAW_PART ||
mode != S_IFCHR)
return (ENXIO);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
}
return(0);
}
/*
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
* vnstrategy:
*
* Run strategy routine for VN device. We use VOP_READ/VOP_WRITE calls
* for vnode-backed vn's, and the new vm_pager_strategy() call for
* vm_object-backed vn's.
*
* Currently B_ASYNC is only partially handled - for OBJT_SWAP I/O only.
*
* NOTE: bp->b_blkno is DEV_BSIZE'd. We must generate bp->b_pblkno for
* our uio or vn_pager_strategy() call that is vn->sc_secsize'd
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
*/
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
1995-12-08 11:19:42 +00:00
static void
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
vnstrategy(struct buf *bp)
{
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
int unit;
struct vn_softc *vn;
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
int error;
Merge from RELENG_2_2. Bandaid for 'lockmgr panic' on the VN device.
1997-10-21 09:51:47 +00:00
int isvplocked = 0;
Fixed an overflowing multiplication in vnstrategy() by replacing it with the standard macro dbtob(). The non-B_PAGING case now works well enough to run newfs on a 32GB virtual drive. Fixed numerous bogus variable types and one overflowing multiplication in the B_PAGING case of vnstrategy(). Swapping to virtual drives larger than 2GB might work now.
1996-01-14 20:32:14 +00:00
long sz;
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
struct uio auio;
struct iovec aiov;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Fix the breakage caused by hanging softc off dev_t. This is only a workaround.
1999-08-23 09:35:12 +00:00
unit = dkunit(bp->b_dev);
vn = bp->b_dev->si_drv1;
if (!vn)
vn = vnfindvn(bp->b_dev);
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn, VN_DEBUG)
YF fix. Reviewed by: phk Submitted by: yves@dutncp8.tn.tudelft.nl (Yves Fonk)
1995-02-14 06:06:07 +00:00
printf("vnstrategy(%p): unit %d\n", bp, unit);
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
if ((vn->sc_flags & VNF_INITED) == 0) {
bp->b_error = ENXIO;
bp->b_flags |= B_ERROR;
biodone(bp);
return;
}
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
bp->b_resid = bp->b_bcount;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn, VN_LABELS) {
if (vn->sc_slices != NULL && dscheck(bp, vn->sc_slices) <= 0) {
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
bp->b_flags |= B_INVAL;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
biodone(bp);
return;
}
} else {
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
int pbn;
pbn = bp->b_blkno * (vn->sc_secsize / DEV_BSIZE);
sz = howmany(bp->b_bcount, vn->sc_secsize);
if (pbn < 0 || pbn + sz > vn->sc_size) {
if (pbn != vn->sc_size) {
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
bp->b_error = EINVAL;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
bp->b_flags |= B_ERROR | B_INVAL;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
}
biodone(bp);
return;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
}
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
bp->b_pblkno = pbn;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
}
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
if (vn->sc_vp && (bp->b_flags & B_FREEBUF)) {
/*
* Not handled for vnode-backed element yet.
*/
biodone(bp);
} else if (vn->sc_vp) {
/*
* VNODE I/O
*/
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
aiov.iov_base = bp->b_data;
aiov.iov_len = bp->b_bcount;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
auio.uio_offset = (vm_ooffset_t)bp->b_pblkno * vn->sc_secsize;
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
auio.uio_segflg = UIO_SYSSPACE;
if( bp->b_flags & B_READ)
auio.uio_rw = UIO_READ;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
else
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
auio.uio_rw = UIO_WRITE;
auio.uio_resid = bp->b_bcount;
auio.uio_procp = curproc;
Merge from RELENG_2_2. Bandaid for 'lockmgr panic' on the VN device.
1997-10-21 09:51:47 +00:00
if (!VOP_ISLOCKED(vn->sc_vp)) {
isvplocked = 1;
vn_lock(vn->sc_vp, LK_EXCLUSIVE | LK_RETRY, curproc);
}
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
if( bp->b_flags & B_READ)
error = VOP_READ(vn->sc_vp, &auio, 0, vn->sc_cred);
else
error = VOP_WRITE(vn->sc_vp, &auio, 0, vn->sc_cred);
Merge from RELENG_2_2. Bandaid for 'lockmgr panic' on the VN device.
1997-10-21 09:51:47 +00:00
if (isvplocked) {
VOP_UNLOCK(vn->sc_vp, 0, curproc);
isvplocked = 0;
}
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
bp->b_resid = auio.uio_resid;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
if( error ) {
bp->b_error = error;
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
bp->b_flags |= B_ERROR;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
}
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
biodone(bp);
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
} else if (vn->sc_object) {
/*
* OBJT_SWAP I/O
*
* ( handles read, write, freebuf )
*/
vm_pager_strategy(vn->sc_object, bp);
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
} else {
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
bp->b_flags |= B_ERROR;
bp->b_error = EINVAL;
Escentially a rewrite by John Dyson. This is disgusting, and John agrees, but the whole thing is, so what the hell. :-) This version is expected to work.
1995-04-19 10:31:18 +00:00
biodone(bp);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
}
}
/* ARGSUSED */
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
1995-12-08 11:19:42 +00:00
static int
This commit fixes various 64bit portability problems required for FreeBSD/alpha. The most significant item is to change the command argument to ioctl functions from int to u_long. This change brings us inline with various other BSD versions. Driver writers may like to use (__FreeBSD_version == 300003) to detect this change. The prototype FreeBSD/alpha machdep will follow in a couple of days time.
1998-06-07 17:13:14 +00:00
vnioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
{
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
struct vn_softc *vn;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
struct vn_ioctl *vio;
int error;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
u_long *f;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
vn = dev->si_drv1;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn,VN_FOLLOW)
Use devtoname() to print dev_t's instead of casting them to long or u_long for misprinting in %lx format.
1999-08-23 20:35:21 +00:00
printf("vnioctl(%s, 0x%lx, %p, 0x%x, %p): unit %d\n",
devtoname(dev), cmd, (void *)data, flag, (void *)p,
dkunit(dev));
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
switch (cmd) {
case VNIOCATTACH:
case VNIOCDETACH:
case VNIOCGSET:
case VNIOCGCLEAR:
case VNIOCUSET:
case VNIOCUCLEAR:
goto vn_specific;
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
}
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn,VN_LABELS) {
if (vn->sc_slices != NULL) {
Change dsioctl() interface to allow DIOCSYNCSLICEINFO to update the caller's slice pointer and to print the device name in error messages.
1995-04-30 15:14:34 +00:00
error = dsioctl("vn", dev, cmd, data, flag,
Spring cleaning around strategy and disklabels/slices: Introduce BUF_STRATEGY(struct buf *, int flag) macro, and use it throughout. please see comment in sys/conf.h about the flag argument. Remove strategy argument from all the diskslice/label/bad144 implementations, it should be found from the dev_t. Remove bogus and unused strategy1 routines. Remove open/close arguments from dssize(). Pick them up from dev_t. Remove unused and unfinished setgeom support from diskslice/label/bad144 code.
1999-08-14 11:40:51 +00:00
&vn->sc_slices);
Use ENOIOCTL instead of -1 (= ERESTART) for diskslice ioctls that are not handled at a particular level.
1997-12-06 14:27:56 +00:00
if (error != ENOIOCTL)
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
return (error);
}
Remove trailing whitespace.
1995-05-30 08:16:23 +00:00
if (dkslice(dev) != WHOLE_DISK_SLICE ||
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
dkpart(dev) != RAW_PART)
return (ENOTTY);
}
vn_specific:
Implement disk slices and labels for the vn driver. This is intended mainly for testing and is only enabled if TEST_LABELLING is defined. It won't actually work until DOS goop is removed from ufs_disksubr.c.
1994-12-12 00:23:11 +00:00
Suser() simplification: 1: s/suser/suser_xxx/ 2: Add new function: suser(struct proc *), prototyped in <sys/proc.h>. 3: s/suser_xxx(\([a-zA-Z0-9_]*\)->p_ucred, \&\1->p_acflag)/suser(\1)/ The remaining suser_xxx() calls will be scrutinized and dealt with later. There may be some unneeded #include <sys/cred.h>, but they are left as an exercise for Bruce. More changes to the suser() API will come along with the "jail" code.
1999-04-27 11:18:52 +00:00
error = suser(p);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
if (error)
return (error);
vio = (struct vn_ioctl *)data;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
f = (u_long*)data;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
switch (cmd) {
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
case VNIOCATTACH:
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
if (vn->sc_flags & VNF_INITED)
return(EBUSY);
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
if (vio->vn_file == NULL)
error = vniocattach_swap(vn, vio, dev, flag, p);
else
error = vniocattach_file(vn, vio, dev, flag, p);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
break;
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
case VNIOCDETACH:
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
if ((vn->sc_flags & VNF_INITED) == 0)
return(ENXIO);
Continue implementing disk slices and labels for the vn driver. Everything is supposed to work except "media removal" (shutting down the vn driver) while some partitions are open. Fix some errnos: return ENOTTY, not ENXIO for unknown ioctls; return ENODEV, not ENXIO for the unsupported dump operation.
1994-12-16 16:50:15 +00:00
/*
* XXX handle i/o in progress. Return EBUSY, or wait, or
* flush the i/o.
* XXX handle multiple opens of the device. Return EBUSY,
* or revoke the fd's.
* How are these problems handled for removable and failing
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
* hardware devices? (Hint: They are not)
Continue implementing disk slices and labels for the vn driver. Everything is supposed to work except "media removal" (shutting down the vn driver) while some partitions are open. Fix some errnos: return ENOTTY, not ENXIO for unknown ioctls; return ENODEV, not ENXIO for the unsupported dump operation.
1994-12-16 16:50:15 +00:00
*/
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
vnclear(vn);
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn, VN_FOLLOW)
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
printf("vnioctl: CLRed\n");
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
break;
Remove trailing whitespace.
1995-05-30 08:16:23 +00:00
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
case VNIOCGSET:
vn_options |= *f;
*f = vn_options;
break;
case VNIOCGCLEAR:
vn_options &= ~(*f);
*f = vn_options;
break;
case VNIOCUSET:
vn->sc_options |= *f;
*f = vn->sc_options;
break;
case VNIOCUCLEAR:
vn->sc_options &= ~(*f);
*f = vn->sc_options;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
break;
default:
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
error = ENOTTY;
break;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
}
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
return(error);
}
/*
* vniocattach_file:
*
* Attach a file to a VN partition. Return the size in the vn_size
* field.
*/
static int
vniocattach_file(vn, vio, dev, flag, p)
struct vn_softc *vn;
struct vn_ioctl *vio;
dev_t dev;
int flag;
struct proc *p;
{
struct vattr vattr;
struct nameidata nd;
int error;
/*
* Always open for read and write.
* This is probably bogus, but it lets vn_open()
* weed out directories, sockets, etc. so we don't
* have to worry about them.
*/
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, vio->vn_file, p);
error = vn_open(&nd, FREAD|FWRITE, 0);
if (error)
return(error);
error = VOP_GETATTR(nd.ni_vp, &vattr, p->p_ucred, p);
if (error) {
VOP_UNLOCK(nd.ni_vp, 0, p);
(void) vn_close(nd.ni_vp, FREAD|FWRITE, p->p_ucred, p);
return(error);
}
VOP_UNLOCK(nd.ni_vp, 0, p);
vn->sc_secsize = DEV_BSIZE;
vn->sc_vp = nd.ni_vp;
vn->sc_size = vattr.va_size / vn->sc_secsize; /* note truncation */
error = vnsetcred(vn, p->p_ucred);
if (error) {
(void) vn_close(nd.ni_vp, FREAD|FWRITE, p->p_ucred, p);
return(error);
}
Now a dev_t is a pointer to struct specinfo which is shared by all specdev vnodes referencing this device. Details: cdevsw->d_parms has been removed, the specinfo is available now (== dev_t) and the driver should modify it directly when applicable, and the only driver doing so, does so: vn.c. I am not sure the logic in checking for "<" was right before, and it looks even less so now. An intial pool of 50 struct specinfo are depleted during early boot, after that malloc had better work. It is likely that fewer than 50 would do. Hashing is done from udev_t to dev_t with a prime number remainder hash, experiments show no better hash available for decent cost (MD5 is only marginally better) The prime number used should not be close to a power of two, we use 83 for now. Add new checkalias2() to get around the loss of info from dev2udev() in bdevvp(); The aliased vnodes are hung on a list straight of the dev_t, and speclisth[SPECSZ] is unused. The sharing of struct specinfo means that the v_specnext moves into the vnode which grows by 4 bytes. Don't use a VBLK dev_t which doesn't make sense in MFS, now we hang a dummy cdevsw on B/Cmaj 253 so that things look sane. Storage overhead from all of this is O(50k). Bump __FreeBSD_version to 400009 The next step will add the stuff needed so device-drivers can start to hang things from struct specinfo
1999-07-20 09:47:55 +00:00
if (dev->si_bsize_phys < vn->sc_secsize)
dev->si_bsize_phys = vn->sc_secsize;
if (dev->si_bsize_best < vn->sc_secsize)
dev->si_bsize_best = vn->sc_secsize;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
vn->sc_flags |= VNF_INITED;
IFOPT(vn, VN_LABELS) {
/*
* Reopen so that `ds' knows which devices are open.
* If this is the first VNIOCSET, then we've
* guaranteed that the device is the cdev and that
* no other slices or labels are open. Otherwise,
* we rely on VNIOCCLR not being abused.
*/
error = vnopen(dev, flag, S_IFCHR, p);
if (error)
vnclear(vn);
}
IFOPT(vn, VN_FOLLOW)
printf("vnioctl: SET vp %p size %x blks\n",
vn->sc_vp, vn->sc_size);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
return(0);
}
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
/*
* vniocattach_swap:
*
* Attach swap backing store to a VN partition of the size specified
* in vn_size.
*/
static int
vniocattach_swap(vn, vio, dev, flag, p)
struct vn_softc *vn;
struct vn_ioctl *vio;
dev_t dev;
int flag;
struct proc *p;
{
int error;
/*
* Range check. Disallow negative sizes or any size less then the
* size of a page. Then round to a page.
*/
if (vio->vn_size <= 0)
return(EDOM);
/*
* Allocate an OBJT_SWAP object.
*
* sc_secsize is PAGE_SIZE'd
*
* vio->vn_size is in PAGE_SIZE'd chunks.
* sc_size must be in PAGE_SIZE'd chunks.
* Note the truncation.
*/
vn->sc_secsize = PAGE_SIZE;
vn->sc_size = vio->vn_size;
vn->sc_object =
vm_pager_allocate(OBJT_SWAP, NULL, vn->sc_secsize * (vm_ooffset_t)vio->vn_size, VM_PROT_DEFAULT, 0);
vn->sc_flags |= VNF_INITED;
error = vnsetcred(vn, p->p_ucred);
if (error == 0) {
IFOPT(vn, VN_LABELS) {
/*
* Reopen so that `ds' knows which devices are open.
* If this is the first VNIOCSET, then we've
* guaranteed that the device is the cdev and that
* no other slices or labels are open. Otherwise,
* we rely on VNIOCCLR not being abused.
*/
error = vnopen(dev, flag, S_IFCHR, p);
}
}
if (error == 0) {
IFOPT(vn, VN_FOLLOW) {
printf("vnioctl: SET vp %p size %x\n",
vn->sc_vp, vn->sc_size);
}
}
if (error)
vnclear(vn);
return(error);
}
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
/*
* Duplicate the current processes' credentials. Since we are called only
* as the result of a SET ioctl and only root can do that, any future access
* to this "disk" is essentially as root. Note that credentials may change
* if some other uid can write directly to the mapped file (NFS).
*/
Remove trailing whitespace.
1995-05-30 08:16:23 +00:00
int
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
vnsetcred(struct vn_softc *vn, struct ucred *cred)
{
struct uio auio;
struct iovec aiov;
char *tmpbuf;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
int error = 0;
/*
* Set credits in our softc
*/
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
if (vn->sc_cred)
crfree(vn->sc_cred);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
vn->sc_cred = crdup(cred);
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
/*
* Horrible kludge to establish credentials for NFS XXX.
*/
if (vn->sc_vp) {
tmpbuf = malloc(vn->sc_secsize, M_TEMP, M_WAITOK);
aiov.iov_base = tmpbuf;
aiov.iov_len = vn->sc_secsize;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = 0;
auio.uio_rw = UIO_READ;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_resid = aiov.iov_len;
vn_lock(vn->sc_vp, LK_EXCLUSIVE | LK_RETRY, curproc);
error = VOP_READ(vn->sc_vp, &auio, 0, vn->sc_cred);
VOP_UNLOCK(vn->sc_vp, 0, curproc);
free(tmpbuf, M_TEMP);
}
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
return (error);
}
void
vnclear(struct vn_softc *vn)
{
struct proc *p = curproc; /* XXX */
A substantial change to the way this works. Not the "TEST_LABELING" is a option you can turn on and of on the fly, as is debugging.
1995-03-11 09:32:45 +00:00
IFOPT(vn, VN_FOLLOW)
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
printf("vnclear(%p): vp=%p\n", vn, vn->sc_vp);
Add changes and code to implement a functional DEVFS. This code will be turned on with the TWO options DEVFS and SLICE. (see LINT) Two labels PRE_DEVFS_SLICE and POST_DEVFS_SLICE will deliniate these changes. /dev will be automatically mounted by init (thanks phk) on bootup. See /sys/dev/slice/slice.4 for more info. All code should act the same without these options enabled. Mike Smith, Poul Henning Kamp, Soeren, and a few dozen others This code does not support the following: bad144 handling. Persistance. (My head is still hurting from the last time we discussed this) ATAPI flopies are not handled by the SLICE code yet. When this code is running, all major numbers are arbitrary and COULD be dynamically assigned. (this is not done, for POLA only) Minor numbers for disk slices ARE arbitray and dynamically assigned.
1998-04-19 23:32:49 +00:00
if (vn->sc_slices != NULL)
dsgone(&vn->sc_slices);
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
vn->sc_flags &= ~VNF_INITED;
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
if (vn->sc_vp != NULL) {
(void)vn_close(vn->sc_vp, FREAD|FWRITE, vn->sc_cred, p);
vn->sc_vp = NULL;
}
if (vn->sc_cred) {
crfree(vn->sc_cred);
vn->sc_cred = NULL;
}
if (vn->sc_object != NULL) {
vm_pager_deallocate(vn->sc_object);
vn->sc_object = NULL;
}
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
vn->sc_size = 0;
}
Pass 3 of the great devsw changes most devsw referenced functions are now static, as they are in the same file as their devsw structure. I've also added DEVFS support for nearly every device in the system, however many of the devices have 'incorrect' names under DEVFS because I couldn't quickly work out the correct naming conventions. (but devfs won't be coming on line for a month or so anyhow so that doesn't matter) If you "OWN" a device which would normally have an entry in /dev then search for the devfs_add_devsw() entries and munge to make them right.. check out similar devices to see what I might have done in them in you can't see what's going on.. for a laugh compare conf.c conf.h defore and after... :) I have not doen DEVFS entries for any DISKSLICE devices yet as that will be a much more complicated job.. (pass 5 :) pass 4 will be to make the devsw tables of type (cdevsw * ) rather than (cdevsw) seems to work here.. complaints to the usual places.. :)
1995-12-08 11:19:42 +00:00
static int
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
vnsize(dev_t dev)
{
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
struct vn_softc *vn;
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
vn = dev->si_drv1;
if (!vn)
The vn driver from 4.4_lite
1994-12-04 20:08:35 +00:00
return(-1);
Submitted by: Matt Dillon <dillon@freebsd.org> The old VN device broke in -4.x when the definition of B_PAGING changed. This patch fixes this plus implements additional capabilities. The new VN device can be backed by a file ( as per normal ), or it can be directly backed by swap. Due to dependencies in VM include files (on opt_xxx options) the new vn device cannot be a module yet. This will be fixed in a later commit. This commit delimitted by tags {PRE,POST}_MATT_VNDEV
1999-03-14 09:20:01 +00:00
if ((vn->sc_flags & VNF_INITED) == 0)
return(-1);
return(vn->sc_size);
}
Convert vn.c into a module (loadable and static).
1999-01-21 17:17:02 +00:00
static int
vn_modevent(module_t mod, int type, void *data)
OK, that's it.. That's EVERY SINGLE driver that has an entry in conf.c.. my next trick will be to define cdevsw[] and bdevsw[] as empty arrays and remove all those DAMNED defines as well.. Each of these drivers has a SYSINIT linker set entry that comes in very early.. and asks teh driver to add it's own entry to the two devsw[] tables. some slight reworking of the commits from yesterday (added the SYSINIT stuff and some usually wrong but token DEVFS entries to all these devices. BTW does anyone know where the 'ata' entries in conf.c actually reside? seems we don't actually have a 'ataopen() etc... If you want to add a new device in conf.c please make sure I know so I can keep it up to date too.. as before, this is all dependent on #if defined(JREMOD) (and #ifdef DEVFS in parts)
1995-11-29 10:49:16 +00:00
{
Convert vn.c into a module (loadable and static).
1999-01-21 17:17:02 +00:00
struct vn_softc *vn;
switch (type) {
case MOD_LOAD:
break;
Enable the vn device under DEVFS without SLICE. This was apparently missed when all the #ifdef SLICE gunk was put in.
1998-09-12 18:46:06 +00:00
Convert vn.c into a module (loadable and static).
1999-01-21 17:17:02 +00:00
case MOD_UNLOAD:
/* fall through */
case MOD_SHUTDOWN:
Remove compiled in limit on number of devices.
1999-08-08 22:01:50 +00:00
for (;;) {
vn = SLIST_FIRST(&vn_list);
if (!vn)
break;
SLIST_REMOVE_HEAD(&vn_list, sc_list);
if (vn->sc_flags & VNF_INITED)
vnclear(vn);
free(vn, M_DEVBUF);
}
Convert vn.c into a module (loadable and static).
1999-01-21 17:17:02 +00:00
break;
default:
break;
}
return 0;
OK, that's it.. That's EVERY SINGLE driver that has an entry in conf.c.. my next trick will be to define cdevsw[] and bdevsw[] as empty arrays and remove all those DAMNED defines as well.. Each of these drivers has a SYSINIT linker set entry that comes in very early.. and asks teh driver to add it's own entry to the two devsw[] tables. some slight reworking of the commits from yesterday (added the SYSINIT stuff and some usually wrong but token DEVFS entries to all these devices. BTW does anyone know where the 'ata' entries in conf.c actually reside? seems we don't actually have a 'ataopen() etc... If you want to add a new device in conf.c please make sure I know so I can keep it up to date too.. as before, this is all dependent on #if defined(JREMOD) (and #ifdef DEVFS in parts)
1995-11-29 10:49:16 +00:00
}
Continue where Julian left off in July 1998: Virtualize bdevsw[] from cdevsw. bdevsw() is now an (inline) function. Join CDEV_MODULE and BDEV_MODULE to DEV_MODULE (please pay attention to the order of the cmaj/bmaj arguments!) Join CDEV_DRIVER_MODULE and BDEV_DRIVER_MODULE to DEV_DRIVER_MODULE (ditto!) (Next step will be to convert all bdev dev_t's to cdev dev_t's before they get to do any damage^H^H^H^H^H^Hwork in the kernel.)
1999-05-07 10:11:40 +00:00
DEV_MODULE(vn, CDEV_MAJOR, BDEV_MAJOR, vn_cdevsw, vn_modevent, 0);
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