Commit Graph

107 Commits

Author SHA1 Message Date
Poul-Henning Kamp
01de1b13b8 Make the proposed name arg to dev_stdclone() const. 2002-03-10 10:50:05 +00:00
Brian Feldman
1b56782026 (Doing that whole test-immediately-after-commit-thing like obrien sez:)
Forgot to include lock.h and mutex.h for GIANT_REQUIRED.
2002-02-16 17:44:43 +00:00
Brian Feldman
1fd9f8f438 Add revoke_and_destroy_dev(), to be used by devices which decide when
they choose to destroy themselves without regard to whether or not
they are open.
2002-02-16 17:35:05 +00:00
Mike Smith
a7489fe56f Add a new sysinit SI_SUB_DEVFS. Devfs hooks into the kernel at SI_ORDER_FIRST,
and devices can be created anytime after that.

Print a warning if an atttempt is made to create a device too early.
2002-01-09 04:58:49 +00:00
Poul-Henning Kamp
24d5c95471 Back out the previous fix to the leading zero problem, I hadn't
noticed it in there already.  That should teach me to check exit
code from cvsup.
2001-11-16 17:07:47 +00:00
Poul-Henning Kamp
10786074c5 Reject leading zeros in dev_stdclone().
PR:		32019
Submitted by:	fenner
2001-11-16 17:05:07 +00:00
Bill Fenner
b519852a02 Do not allow leading zeros on device names in dev_stdclone().
PR:		kern/32019
Reviewed by:	phk
2001-11-15 23:27:46 +00:00
Poul-Henning Kamp
4e13006747 Fix a problem in the disk related hack where device nodes for a physically
non-existent disk in a legacy /dev on a DEVFS system would panic the system
if stat(2)'ed.

Do not whine about anonymous device nodes not having a si_devsw, they're
not supposed to.
2001-10-28 09:39:28 +00:00
Poul-Henning Kamp
4e4a76633b Nudge the axe a bit closer to cdevsw[]:
Make it a panic to repeat make_dev() or destroy_dev(), this check
   should maybe be neutered when -current goes -stable.

   Whine if devsw() is called on anon dev_t's in a devfs system.

   Make a hack to avoid our lazy-eval disk code triggering the above whine.

   Fix the multiple make_dev() in disk code by making ${disk}${unit}s${slice}
   an alias/symlink to ${disk}${unit}s${slice}c
2001-10-27 17:44:21 +00:00
Poul-Henning Kamp
5f7806ab69 Make cdevsw[] static. 2001-10-26 15:31:22 +00:00
Jonathan Lemon
7e7c3f3f33 Add dev_named(dev, name), which is similar in spirit to devtoname().
This function returns success if the device is known by either 'name'
or any of its aliases.
2001-10-17 18:47:12 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
Warner Losh
c7021493ba Make the fmt arguments to make_dev and make_dev_alias const char *.
Approved on IRC as long as it didn't cause a large number of warnings by: phk

MFC After: 700 hours
2001-08-02 20:35:35 +00:00
Poul-Henning Kamp
3344c5a17e Create a general facility for making dev_t's depend on another
dev_t.  The dev_depends(dev_t, dev_t) function is for tying them
to each other.

When destroy_dev() is called on a dev_t, all dev_t's depending
on it will also be destroyed (depth first order).

Rewrite the make_dev_alias() to use this dependency facility.

kern/subr_disk.c:
Make the disk mini-layer use dependencies to make sure all
relevant dev_t's are removed when the disk disappears.

Make the disk mini-layer precreate some magic sub devices
which the disk/slice/label code expects to be there.

kern/subr_disklabel.c:
Remove some now unneeded variables.

kern/subr_diskmbr.c:
Remove some ancient, commented out code.

kern/subr_diskslice.c:
Minor cleanup.  Use name from dev_t instead of dsname()
2001-05-26 08:27:58 +00:00
Brian Somers
56700d4634 Call strlen() once instead of twice. 2001-04-14 21:33:58 +00:00
Poul-Henning Kamp
15b6f00fd1 Add a KASSERT on unit2minor() so that we catch it if people try to pass
us unit numbers which doesn't fit in 24 bits.
2001-03-20 13:24:24 +00:00
Kirk McKusick
589c7af992 Fixes to track snapshot copy-on-write checking in the specinfo
structure rather than assuming that the device vnode would reside
in the FFS filesystem (which is obviously a broken assumption with
the device filesystem).
2001-03-07 07:09:55 +00:00
Brian Somers
115867175a KASSERT that the minor number passed to make_dev() is valid. 2001-02-02 03:32:11 +00:00
Poul-Henning Kamp
1fd7b93f3f Convert a Debugger(3) to a panic(9) and a EINVAL.
Reminded by:	bde
2001-01-21 21:19:49 +00:00
David Malone
7cc0979fd6 Convert more malloc+bzero to malloc+M_ZERO.
Submitted by:	josh@zipperup.org
Submitted by:	Robert Drehmel <robd@gmx.net>
2000-12-08 21:51:06 +00:00
Poul-Henning Kamp
959b7375ed Staticize some malloc M_ instances. 2000-12-08 20:09:00 +00:00
John Baldwin
9842fc8dda Axe some unused variables. 2000-11-10 21:54:19 +00:00
Poul-Henning Kamp
a16d0eb2d7 Deprecate devsw->d_bmaj entirely.
This removes support for booting current kernels with very old bootblocks.

Device driver writers: Please remove initializations for the d_bmaj
field in your cdevsw{}.
2000-10-31 10:58:14 +00:00
Poul-Henning Kamp
fe4e324374 Allow all users to access the dev -> devname sysctl. 2000-10-29 19:50:06 +00:00
Poul-Henning Kamp
b0d17ba69e Rename lminor() to dev2unit(). This function gives a linear unit number
which hides the 'hole' in the minor bits.

Introduce unit2minor() to do the reverse operation.

Fix some some make_dev() calls which didn't use UID_* or GID_* macros.

Kill the v_hashchain alias macro, it hides the real relationship.

Introduce experimental SI_CHEAPCLONE flag set it on cloned bpfs.
2000-09-19 10:28:44 +00:00
Poul-Henning Kamp
5ef2707e6e revent multiple make_dev() calls on the same dev_t and similar bogosities.
A couple of new warnings may be emitted during boot if drivers DTWT.

Tested by:	George Cox <gjvc@gjvc.com>
2000-09-11 17:15:33 +00:00
Poul-Henning Kamp
8d25eb2c3a Add code to devname(3) so it can find the names of devices which
were not present when dev_mkdb(8) was run.

First the dev_mkdb(8) database is searched, this caters for non-DEVFS
cases where people have renamed a device.

If that fails we ask the kernel using sysctl kern.devname if the device
driver has put a name in the dev_t.  This covers DEVFS cloned devices.

If that also fails we format a string which isn't entirely useless.
2000-09-09 11:39:59 +00:00
Poul-Henning Kamp
db90128160 Avoid the modules madness I inadvertently introduced by making the
cloning infrastructure standard in kern_conf.  Modules are now
the same with or without devfs support.

If you need to detect if devfs is present, in modules or elsewhere,
check the integer variable "devfs_present".

This happily removes an ugly hack from kern/vfs_conf.c.

This forces a rename of the eventhandler and the standard clone
helper function.

Include <sys/eventhandler.h> in <sys/conf.h>: it's a helper #include
like <sys/queue.h>

Remove all #includes of opt_devfs.h they no longer matter.
2000-09-02 19:17:34 +00:00
Poul-Henning Kamp
3f54a085a6 Remove all traces of Julians DEVFS (incl from kern/subr_diskslice.c)
Remove old DEVFS support fields from dev_t.

  Make uid, gid & mode members of dev_t and set them in make_dev().

  Use correct uid, gid & mode in make_dev in disk minilayer.

  Add support for registering alias names for a dev_t using the
  new function make_dev_alias().  These will show up as symlinks
  in DEVFS.

  Use makedev() rather than make_dev() for MFSs magic devices to prevent
  DEVFS from noticing this abuse.

  Add a field for DEVFS inode number in dev_t.

  Add new DEVFS in fs/devfs.

  Add devfs cloning to:
        disk minilayer (ie: ad(4), sd(4), cd(4) etc etc)
        md(4), tun(4), bpf(4), fd(4)

  If DEVFS add -d flag to /sbin/inits args to make it mount devfs.

  Add commented out DEVFS to GENERIC
2000-08-20 21:34:39 +00:00
Jake Burkholder
e39756439c Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by:		msmith and others
2000-05-26 02:09:24 +00:00
Jake Burkholder
740a1973a6 Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by:	phk
Reviewed by:	phk
Approved by:	mdodd
2000-05-23 20:41:01 +00:00
Poul-Henning Kamp
192c06ea1b Change the "bdev-whiner" to whine when open is attempted and extend
the deadline a month.
2000-05-09 18:53:57 +00:00
Kris Kennaway
8c6ac5e5a5 Reword warning to make it clearer (I read it as "remove block devices created
before 2000-06-01" which is obviously not what was intended :-)
2000-03-25 21:10:20 +00:00
Poul-Henning Kamp
e004067750 Whine at users who still have block devices in /dev, give them until
june 1st to fix their system.
2000-03-21 19:25:56 +00:00
Boris Popov
8dc74b6288 Backout previous commit. It was a mistake. 2000-01-23 15:47:46 +00:00
Boris Popov
9e991dfa2f Replace non obvious number with SPECNAMELEN constant.
Reviewed by:	phk
2000-01-23 14:58:53 +00:00
Poul-Henning Kamp
fb01c24c11 Be more careful about NOUDEV and NODEV.
Submitted by:	bde
2000-01-04 12:51:50 +00:00
Poul-Henning Kamp
c464420c89 Report swapdevices as cdevs rather than bdevs.
Remove unused dev2budev() function.
1999-11-29 21:37:18 +00:00
Poul-Henning Kamp
38941f351c Remove the now unused chrtoblk() function. 1999-11-29 20:50:58 +00:00
Peter Wemm
900942ba53 Zap devsw_module_handler(). 1999-11-08 08:10:00 +00:00
Poul-Henning Kamp
44d1184e81 Rename remove_dev() to destroy_dev().
Nagged about by:        msmith
1999-11-08 07:44:01 +00:00
Poul-Henning Kamp
d53dedee55 Remove the devsw magic from DEV_MODULE() 1999-11-07 10:01:17 +00:00
Poul-Henning Kamp
662761a74b A little step further in the dev_t cleanups:
Refuse to register a bmajor if the D_DISK flag is not set in cdevsw.

A little bit of cleanup while here.
1999-10-04 11:42:41 +00:00
Bruce Evans
c32cc1493f Const'ify devtoname() and d_name. This exposes some errors (2 non-benign).
Handle negative minor numbers properly in devtoname().
1999-09-13 12:29:32 +00:00
Poul-Henning Kamp
d137accc89 Add dev_t freeing code. Controlled by sysctl debug.free_devt, default
is off.
1999-08-29 09:09:12 +00:00
Poul-Henning Kamp
a87b535090 Put a brief comment on a couple of #defines. 1999-08-28 19:21:36 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Poul-Henning Kamp
9dcbe2404a Convert DEVFS hooks in (most) drivers to make_dev().
Diskslice/label code not yet handled.

Vinum, i4b, alpha, pc98 not dealt with (left to respective Maintainers)

Add the correct hook for devfs to kern_conf.c

The net result of this excercise is that a lot less files depends on DEVFS,
and devtoname() gets more sensible output in many cases.

A few drivers had minor additional cleanups performed relating to cdevsw
registration.

A few drivers don't register a cdevsw{} anymore, but only use make_dev().
1999-08-23 20:59:21 +00:00
Julian Elischer
1744fcd082 First small steps at merging DEVFS and PHK's Dev_t stuff. 1999-08-20 20:25:00 +00:00
Bill Fumerola
b8e49f681b Welcome devtoname(), to most likely be used when printing information
about a dev_t.

printf("%x", dev) now becomes printf("%s", devtoname(dev)) because
printing actual information about the device is much more useful then
printing a pointer to an address that would never help the developer debug.

Submitted by:	phk, bde
1999-08-17 20:25:50 +00:00