Commit Graph

755 Commits

Author SHA1 Message Date
Julian Elischer
1f7e07329d Print out the device name when there is an uninitialised IO size or IO error
in spec_getpages().

Submitted by:	phk suggested the idea.
1999-09-03 09:14:36 +00:00
Julian Elischer
c5d6480694 Add a catchall to set default blocksize values for disk like devices.
Submitted by:	phk@freebsd.org
1999-09-03 08:26:46 +00:00
Julian Elischer
7012bab988 Revert a bunch of contraversial changes by PHK. After
a quick think and discussion among various people some form of some of
these changes will probably be recommitted.

The reversion requested was requested by dg while discussions proceed.
PHK has indicated that he can live with this, and it has been agreed
that some form of some of these changes may return shortly after further
discussion.
1999-09-03 05:16:59 +00:00
Poul-Henning Kamp
fd559c6fc1 Fix the sense of the vn_isdisk() check. 1999-09-01 15:17:18 +00:00
Poul-Henning Kamp
3b7df19ba4 Set the buffersize for non BSDFFS labeled partitions to
max(dev->si_bsize_phys, BLKDEV_IOSIZE).

Requested by:   davidg
1999-08-31 21:46:42 +00:00
Poul-Henning Kamp
586e1b7b46 Make buffered acces to bdevs from userland controllable with
a sysctl vfs.bdev_access.
1999-08-31 21:01:57 +00:00
Poul-Henning Kamp
02e1576966 Make bdev userland access work like cdev userland access unless
the highly non-recommended option ALLOW_BDEV_ACCESS is used.

(bdev access is evil because you don't get write errors reported.)

Kill si_bsize_best before it kills Matt :-)

Use the specfs routines rather having cloned copies in devfs.
1999-08-30 07:56:23 +00:00
Bruce Evans
4047cd0bb2 Converted the silly SAFTEY option into a new-style option by renaming it to
DIAGNOSTIC.

Fixed an English style bug in the panic messages controlled by SAFETY.
1999-08-30 07:08:04 +00:00
Bruce Evans
8021ba879a Changed old-style option UNION_DIAGNOSTIC to DEBUG and fixed printf
format errors exposed by this.  It has nothing to do with diagnostics
since it does little more than control tracing of normal operation.
Actual diagnostics for the union file system are still controlled by
the DIAGNOSTIC option.
1999-08-29 10:03:35 +00:00
Bruce Evans
b00b6d73dd Changed old-style options UMAPFS_DIAGNOSTIC and UMAP_DIAGNOSTIC to DEBUG
or DDB and fixed printf format errors exposed by this.  The options had
little to do with diagnostics; they mostly controlled tracing of normal
operation.
1999-08-29 09:54:17 +00:00
Poul-Henning Kamp
94db13fe98 Fix various trivial warnings from LINT 1999-08-28 19:44:07 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Poul-Henning Kamp
dbafb3660f Simplify the handling of VCHR and VBLK vnodes using the new dev_t:
Make the alias list a SLIST.

        Drop the "fast recycling" optimization of vnodes (including
        the returning of a prexisting but stale vnode from checkalias).
        It doesn't buy us anything now that we don't hardlimit
        vnodes anymore.

        Rename checkalias2() and checkalias() to addalias() and
        addaliasu() - which takes dev_t and udev_t arg respectively.

        Make the revoke syscalls use vcount() instead of VALIASED.

        Remove VALIASED flag, we don't need it now and it is faster
        to traverse the much shorter lists than to maintain the
        flag.

        vfs_mountedon() can check the dev_t directly, all the vnodes
        point to the same one.

Print the devicename in specfs/vprint().

Remove a couple of stale LFS vnode flags.

Remove unimplemented/unused LK_DRAINED;
1999-08-26 14:53:31 +00:00
Poul-Henning Kamp
41d2e3e09e Introduce vn_isdisk(struct vnode *vp) function, and use it to test for diskness. 1999-08-25 12:24:39 +00:00
Julian Elischer
bb70475a92 Fix comment to match reality..
vop_strategy gets a vnode argument these days.
1999-08-25 00:26:34 +00:00
Bruce Evans
939cb7521a Initialise fsids with (user) device numbers again. Bitrot when dev_t's
were changed to pointers was obscured by casting dev_t's to longs.
fsids haven't even been comprised of longs since the Lite2 merge.
1999-08-23 21:07:13 +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
Marcel Moolenaar
63a9927353 Let processes retrieve their argv through procfs. Revert to the original
behaviour in all other cases.

Submitted by: Andrew Gordon <arg@arg1.demon.co.uk>
1999-08-19 19:41:08 +00:00
Alan Cox
2c28a10540 Add the (inline) function vm_page_undirty for clearing the dirty bitmask
of a vm_page.

Use it.

Submitted by:	dillon
1999-08-17 04:02:34 +00:00
Poul-Henning Kamp
49ff4debd3 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
Poul-Henning Kamp
2820b2e762 Add support for device drivers which want to track all open/close
operations.  This allows a device driver better insight into
what is going on that the current:

        proc1:  open /dev/foo R/O
                        devsw->open( R/O, proc1 )
        proc2:  open /dev/foo R/W
                        devsw->open( R/W, proc2 )
        proc2:  close
                        /* nothing, but device is
                           really only R/O open */
        proc1:  close
                        devsw->close( R/O, proc1 )
1999-08-13 16:29:27 +00:00
Poul-Henning Kamp
b3d7d91f32 Don't examine vp->v_tag (see comment in vnode.h) 1999-08-13 13:05:08 +00:00
Poul-Henning Kamp
608bb3ffdf Remove spec_getattr(), which as far as I can tell can never be called from the current code-paths, and if it were, would panic on any unmounted bdev. 1999-08-13 10:53:58 +00:00
Poul-Henning Kamp
7dc5cd047f The bdevsw() and cdevsw() are now identical, so kill the former. 1999-08-13 10:29:38 +00:00
Poul-Henning Kamp
4d4f932326 s/v_specinfo/v_rdev/ 1999-08-13 10:10:12 +00:00
Poul-Henning Kamp
0ef1c82630 Decommision miscfs/specfs/specdev.h. Most of it goes into <sys/conf.h>,
a few lines into <sys/vnode.h>.

Add a few fields to struct specinfo, paving the way for the fun part.
1999-08-08 18:43:05 +00:00
Bruce Evans
dd26feb90b Fixed printf format errors (%qu -> %llu; the arg was already unsigned long
long to hide problems on alphas).
1999-08-08 13:43:51 +00:00
Bruce Evans
f09d6e3daa Fixed all printf format errors reported by gcc -Wformat on i386's:
- %q -> %ll; don't assume that the promotion of off_t is quad_t; only
  assume that off_t's are representable as long longs.
- printing of dev_t's was completely broken.

Fixed nearby printf format errors not reported by gcc -Wformat on i386's:
- printing of ino_t's and pointers was sloppy.
1999-08-08 13:22:05 +00:00
Robert V. Baron
962e236ec0 The dev returned here is what is found in the st_dev field.
This should not be further translated ... hence the 0.
1999-08-02 20:55:11 +00:00
Bruce Evans
a2a0b22c90 Don't set DE_ACCESS for unsuccessful reads.
Translated from: a similar fix in ufs_readwrite.c rev.1.61.

Don't forget to set DE_ACCESS for short reads.

Check for invalid (negative) offsets before checking for reads of
0 bytes, as in ufs, although checking for invalid offsets at all
is probably a bug.
1999-07-25 04:01:32 +00:00
Poul-Henning Kamp
14b672a638 Remove the RCS "Log" and all the verbiage it has generated. 1999-07-21 12:51:36 +00:00
Poul-Henning Kamp
698bfad7f2 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
Poul-Henning Kamp
4fcd91ddf1 Don't access the device with vp->v_specinfo->si_rdev, use vp->v_rdev. 1999-07-20 07:18:17 +00:00
Poul-Henning Kamp
f008cfcc1a I have not one single time remembered the name of this function correctly
so obviously I gave it the wrong name.  s/umakedev/makeudev/g
1999-07-17 18:43:50 +00:00
Poul-Henning Kamp
46dcdb370e Allow jailed proccesses to open non-process vnodes like the root of the fs. 1999-07-09 21:31:44 +00:00
Peter Wemm
ebce412ca2 Use %q rather than rolling a custom routine. 1999-07-09 17:56:59 +00:00
Jonathan Lemon
d6c4f01106 Support for i386 hardware breakpoints.
Submitted by:	Brian Dean <brdean@unx.sas.com>
1999-07-09 04:18:32 +00:00
Jonathan Lemon
ab001a72be Implement support for hardware debug registers on the i386.
Submitted by:	Brian Dean <brdean@unx.sas.com>
1999-07-09 04:16:00 +00:00
Poul-Henning Kamp
8947a90a90 Make sure that stat(2) and friends always return a valid st_dev field.
Pseudo-FS need not fill in the va_fsid anymore, the syscall code
will use the first half of the fsid, which now looks like a udev_t
with major 255.
1999-07-02 16:29:47 +00:00
Peter Wemm
919d1ea275 move <sys/systm.h> before <sys/buf.h> 1999-07-01 22:12:39 +00:00
Kirk McKusick
67812eacd7 Convert buffer locking from using the B_BUSY and B_WANTED flags to using
lockmgr locks. This commit should be functionally equivalent to the old
semantics. That is, all buffer locking is done with LK_EXCLUSIVE
requests. Changes to take advantage of LK_SHARED and LK_RECURSIVE will
be done in future commits.
1999-06-26 02:47:16 +00:00
Kirk McKusick
f9c8cab591 Add a vnode argument to VOP_BWRITE to get rid of the last vnode
operator special case. Delete special case code from vnode_if.sh,
vnode_if.src, umap_vnops.c, and null_vnops.c.
1999-06-16 23:27:55 +00:00
Poul-Henning Kamp
7a7404d275 Eliminate the bogus procfs private almost struct dirent structure.
Spotted by: Lars Hamren
Reviewed by: bde
1999-06-13 20:53:16 +00:00
Dmitrij Tejblum
e2754b751d Remove an unused variable. 1999-06-01 20:29:58 +00:00
Poul-Henning Kamp
2447bec829 Simplify cdevsw registration.
The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it.  cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.

cdevsw_add() will print an message if the d_maj field looks bogus.

Remove nblkdev and nchrdev variables.  Most places they were used
bogusly.  Instead check a dev_t for validity by seeing if devsw()
or bdevsw() returns NULL.

Move bdevsw() and devsw() functions to kern/kern_conf.c

Bump __FreeBSD_version to 400006

This commit removes:
        72 bogus makedev() calls
        26 bogus SYSINIT functions

if_xe.c bogusly accessed cdevsw[], author/maintainer please fix.

I4b and vinum not changed.  Patches emailed to authors.  LINT
probably broken until they catch up.
1999-05-31 11:29:30 +00:00
Poul-Henning Kamp
4e2f199e0c 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
Dmitrij Tejblum
9d3a442583 Don't call calcru() on a swapped-out process. calcru() access p_stats, which
is in U-area.
1999-05-22 20:10:31 +00:00
Semen Ustimenko
3c9bb8b7ff Driver is now ported to NetBSD.
Submitted by:	Christos Zoulas <christos@zoulas.com>
1999-05-12 09:43:09 +00:00
Poul-Henning Kamp
bfbb9ce670 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
Poul-Henning Kamp
61d9c46c46 remove cast from dev_t to dev_t. 1999-05-09 13:11:37 +00:00
Poul-Henning Kamp
4be2eb8c49 I got tired of seeing all the cdevsw[major(foo)] all over the place.
Made a new (inline) function devsw(dev_t dev) and substituted it.

Changed to the BDEV variant to this format as well: bdevsw(dev_t dev)

DEVFS will eventually benefit from this change too.
1999-05-08 06:40:31 +00:00
Daniel C. Sobral
a5eec77539 The lowercasing of Joliet filenames was not a feature. 1999-05-08 04:35:47 +00:00
Poul-Henning Kamp
46eede0058 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
Peter Wemm
21a1062c12 One too many vfsops.. 1999-05-06 22:07:34 +00:00
Poul-Henning Kamp
b0eeea2042 remove b_proc from struct buf, it's (now) unused.
Reviewed by:	dillon, bde
1999-05-06 20:00:34 +00:00
Peter Wemm
dfd5dee1b0 Add sufficient braces to keep egcs happy about potentially ambiguous
if/else nesting.
1999-05-06 18:13:11 +00:00
Poul-Henning Kamp
a6d3121589 Make the type and map files claim 0 bytes size. Tar doesn't get confused
now, but doesn't store any data eiter.

I wonder if we shouldn't claim to be fifos instead...
1999-05-04 08:01:55 +00:00
Poul-Henning Kamp
8902608d57 Add even more () to CHECKIO which by now feels positively LISPish.
Submitted by:	bde
Reviewed by:	phk
1999-05-04 08:00:10 +00:00
Poul-Henning Kamp
d37ed5a03a Add a new "file" to procfs: "rlimit" which shows the resource limits for
the process.

PR:		11342
Submitted by:	Adrian Chadd adrian@freebsd.org
Reviewed by:	phk
1999-04-30 13:04:21 +00:00
Poul-Henning Kamp
75c1354190 This Implements the mumbled about "Jail" feature.
This is a seriously beefed up chroot kind of thing.  The process
is jailed along the same lines as a chroot does it, but with
additional tough restrictions imposed on what the superuser can do.

For all I know, it is safe to hand over the root bit inside a
prison to the customer living in that prison, this is what
it was developed for in fact:  "real virtual servers".

Each prison has an ip number associated with it, which all IP
communications will be coerced to use and each prison has its own
hostname.

Needless to say, you need more RAM this way, but the advantage is
that each customer can run their own particular version of apache
and not stomp on the toes of their neighbors.

It generally does what one would expect, but setting up a jail
still takes a little knowledge.

A few notes:

   I have no scripts for setting up a jail, don't ask me for them.

   The IP number should be an alias on one of the interfaces.

   mount a /proc in each jail, it will make ps more useable.

   /proc/<pid>/status tells the hostname of the prison for
   jailed processes.

   Quotas are only sensible if you have a mountpoint per prison.

   There are no privisions for stopping resource-hogging.

   Some "#ifdef INET" and similar may be missing (send patches!)

If somebody wants to take it from here and develop it into
more of a "virtual machine" they should be most welcome!

Tools, comments, patches & documentation most welcome.

Have fun...

Sponsored by:   http://www.rndassociates.com/
Run for almost a year by:       http://www.servetheweb.com/
1999-04-28 11:38:52 +00:00
Poul-Henning Kamp
1c308b817a Change suser_xxx() to suser() where it applies. 1999-04-27 12:21:16 +00:00
Poul-Henning Kamp
f711d546d2 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
Semen Ustimenko
461b249325 Removed annoying messaged during boot,added some check
before mounting (should help to do not mount extended partitions:-).
Fixed problem with hanging while unmounting busy fs.

And (the most important) added some locks to prevent
simulaneous access to kernel structures!
1999-04-20 21:06:44 +00:00
Daniel C. Sobral
44e568e2a1 Add support for Joliet extensions to the iso9660 fs. The related PR
cannot yet be closed, though.

I hope I got all credits right, and that the multiple submitted by lines
do not break anyone's scripts...

PR:		kern/5038, kern/5567
Submitted by:	Keith Jang <keith@email.gcn.net.tw>
Submitted by:	Joachim Kuebart <joki@kuebart.stuttgart.netsurf.de>
Submitted by:	Byung Yang <byung@wam.umd.edu>
Submitted by:	Motomichi Matsuzaki <mzaki@e-mail.ne.jp>
1999-04-18 10:58:03 +00:00
Semen Ustimenko
2286ba29c0 Removed DIAGNOSTIC opion redefinition.
Submitted by:	Eivind Eklund <eivind@FreeBSD.org>
1999-04-13 14:54:20 +00:00
Julian Elischer
8d17e69460 Catch a case spotted by Tor where files mmapped could leave garbage in the
unallocated parts of the last page when the file ended on a frag
but not a page boundary.
Delimitted by tags PRE_MATT_MMAP_EOF and POST_MATT_MMAP_EOF,
in files alpha/alpha/pmap.c i386/i386/pmap.c nfs/nfs_bio.c vm/pmap.h
    vm/vm_page.c vm/vm_page.h vm/vnode_pager.c miscfs/specfs/spec_vnops.c
    ufs/ufs/ufs_readwrite.c kern/vfs_bio.c

Submitted by: Matt Dillon <dillon@freebsd.org>
Reviewed by: Alan Cox <alc@freebsd.org>
1999-04-05 19:38:30 +00:00
Dmitrij Tejblum
f1cde7a270 Back out half of 1.32: don't print a message on every failed mount attempt.
It is too chatty and hardly useful. 2 mesages in somewhat usual cases are
left for now.
1999-03-28 23:00:33 +00:00
Warner Losh
ba1602a8ed Don't allow anyone except root to mount file systems that map uids.
This can have bad security implications, but the impact on FreeBSD
systems is minimal because this fs isn't in the default kernels and it
is unknown if it even works.

Submitted by: Manuel Bouyer <bouyer@antioche.eu.org> and
	Artur Grabowski <art@stacken.kth.se>
1999-03-12 19:40:39 +00:00
Peter Wemm
a32cf1f06d This code got moved as a result of confusion between union mounts and
unionfs.  Julian has already revived the union mount part of this move
in vfs_syscalls.c rev 1.119, but forgot to take it out of here.
1999-02-28 16:13:25 +00:00
Matthew Dillon
155f87daf2 Reviewed by: Julian Elischer <julian@whistle.com>
Add d_parms() to {c,b}devsw[].  If non-NULL this function points to
    a device routine that will properly fill in the specinfo structure.
    vfs_subr.c's checkalias() supplies appropriate defaults.  This change
    should be fully backwards compatible with existing devices.
1999-02-25 05:22:30 +00:00
Luoqi Chen
b1028ad122 Hide access to vmspace:vm_pmap with inline function vmspace_pmap(). This
is the preparation step for moving pmap storage out of vmspace proper.

Reviewed by:	Alan Cox	<alc@cs.rice.edu>
		Matthew Dillion	<dillon@apollo.backplane.com>
1999-02-19 14:25:37 +00:00
Semen Ustimenko
5ada11aa72 Added limited write ability. Now we can use some kind
of files for swap holders. See mount_ntfs..8 for details.
1999-02-19 12:31:02 +00:00
Matthew Dillon
9fdfe602fc Remove MAP_ENTRY_IS_A_MAP 'share' maps. These maps were once used to
attempt to optimize forks but were essentially given-up on due to
    problems and replaced with an explicit dup of the vm_map_entry structure.
    Prior to the removal, they were entirely unused.
1999-02-07 21:48:23 +00:00
John Polstra
b7429e253a Correct a format mismatch on 64-bit architectures. This should
fix the erroneous values in the procfs "map" file on the Alpha.
1999-02-05 06:18:54 +00:00
Semen Ustimenko
16ee760296 First version.
Reviewed by:	David O'Brien <obrien@NUXI.com>
1999-02-03 04:07:38 +00:00
Bruce Evans
95c391a468 Don't comment out dead code; remove it. 1999-01-31 11:54:29 +00:00
Poul-Henning Kamp
904efa5a75 Use suser() to determine super-user-ness.
Don't pretend we can mount RW.

Reviewed by:	bde
1999-01-30 12:26:22 +00:00
Bruce Evans
1d20193564 Removed a bogus cast to c_caddr_t. This is part of terminating
c_caddr_t with extreme prejudice.  Here we want to convert from
`const char *' to `const char *'.  Casting through c_caddr_t is
not the way to do this.  The original cast to caddr_t was apparently
to break warnings about const mismatches in other versions of BSD
(in 4.4BSDLite2, the conversion is from `const char *path' to
plain caddr_t).
1999-01-29 07:23:53 +00:00
Matthew Dillon
8aef171243 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-28 00:57:57 +00:00
Matthew Dillon
fe08c21a53 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile.

    This commit includes significant work to proper handle const arguments
    for the DDB symbol routines.
1999-01-27 23:45:44 +00:00
Matthew Dillon
831a80b0d5 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-27 22:42:27 +00:00
Matthew Dillon
d254af07a1 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-27 21:50:00 +00:00
Matthew Dillon
b4e36adf1c Fix warnings preparing for -Wall -Wcast-qual
Also disable one usb module in LINT due to fatal compilation errors,
    temporary.
1999-01-27 20:09:21 +00:00
Matthew Dillon
1c7c3c6a86 This is a rather large commit that encompasses the new swapper,
changes to the VM system to support the new swapper, VM bug
    fixes, several VM optimizations, and some additional revamping of the
    VM code.  The specific bug fixes will be documented with additional
    forced commits.  This commit is somewhat rough in regards to code
    cleanup issues.

Reviewed by:	"John S. Dyson" <root@dyson.iquest.net>, "David Greenman" <dg@root.com>
1999-01-21 08:29:12 +00:00
Eivind Eklund
15a1057c46 Add 'options DEBUG_LOCKS', which stores extra information in struct
lock, and add some macros and function parameters to make sure that
the information get to the point where it can be put in the lock
structure.

While I'm here, add DEBUG_VFS_LOCKS to LINT.
1999-01-20 14:49:12 +00:00
Peter Wemm
b34c073744 Missed a stray LKM #ifdef 1999-01-17 21:04:53 +00:00
Peter Wemm
1351d07f0d Mountroot could concievably make sense to a KLD though, in the preload
case.  I'm not sure the autoconf code is up to it though...
1999-01-17 20:41:02 +00:00
Peter Wemm
6bfaa53754 Clean up the KLD/LKM goop a bit. 1999-01-17 20:25:22 +00:00
Eivind Eklund
ea2e827716 Remove declarations for undefined functions and a couple of unused
enotsupp implementations.
1999-01-12 11:49:30 +00:00
Bruce Evans
de5d1ba57c Don't pass unused unused timestamp args to UFS_UPDATE() or waste
time initializing them.  This almost finishes centralizing (in-core)
timestamp updates in ufs_itimes().
1999-01-07 16:14:19 +00:00
Eivind Eklund
fb1167777a Remove the 'waslocked' parameter to vfs_object_create(). 1999-01-05 18:50:03 +00:00
Peter Wemm
75ba77578f A partial implementation of the procfs cmdline pseudo-file. This
is enough to satisfy things like StarOffice.  This is a hack, but doing
it properly would be a LOT of work, and would require extensive grovelling
around in the user address space to find the argv[].

Obtained from: Mostly from Andrzej Bialecki <abial@nask.pl>.
1999-01-05 03:53:06 +00:00
Dmitrij Tejblum
57081f7b94 Now empty DOS filesystems default to long file names. Non-empty filesystems
without traces of Win95 default to short file names, as before.
1999-01-02 18:52:13 +00:00
Dmitrij Tejblum
9d9fdb45c5 Ensure that deHighClust in direntry always initialized.
Noticed by: 	Carl Mascott <cmascott@world.std.com>

Don't write access time of a file more than once per day. (Its precision is
1 day anyway). Don't try to write access and creation time in nonwin95 case.

Suggested by:	bde (long time ago).
1999-01-02 13:26:29 +00:00
Bruce Evans
289bdf33d3 Ifdefed conditionally used simplock variables. 1999-01-02 11:34:57 +00:00
Bruce Evans
f2aed91b48 Made this compile if UMAPFS_DIAGNOSTIC is defined. This has been broken
since before rev.1.1, so UMAPFS_DIAGNOSTIC should not be trusted.
UMAPFS_DIAGNOSTIC is commented out in LINT to hide various bugs.
1999-01-01 10:14:37 +00:00
Eivind Eklund
e910d98670 Fix possible NULL-pointer deref in error case (same as DEVFS). 1998-12-16 00:10:51 +00:00
Matthew Dillon
27ed09c2f0 Cleanup uninitialized-possibly-used (but really not) warnings 1998-12-14 05:00:59 +00:00
Archie Cobbs
f1d19042b0 The "easy" fixes for compiling the kernel -Wunused: remove unreferenced static
and local variables, goto labels, and functions declared but not defined.
1998-12-07 21:58:50 +00:00
Eivind Eklund
c598db2204 '\0' is the most ugly NULL pointer constant I've ever seen in real code. 1998-12-07 02:47:46 +00:00
Jordan K. Hubbard
7525853ce7 MFC: loosen compare even though bde doesn't like it. 1998-12-06 11:36:24 +00:00
Archie Cobbs
2127f26023 Examine all occurrences of sprintf(), strcat(), and str[n]cpy()
for possible buffer overflow problems. Replaced most sprintf()'s
with snprintf(); for others cases, added terminating NUL bytes where
appropriate, replaced constants like "16" with sizeof(), etc.

These changes include several bug fixes, but most changes are for
maintainability's sake. Any instance where it wasn't "immediately
obvious" that a buffer overflow could not occur was made safer.

Reviewed by:	Bruce Evans <bde@zeta.org.au>
Reviewed by:	Matthew Dillon <dillon@apollo.backplane.com>
Reviewed by:	Mike Spengler <mks@networkcs.com>
1998-12-04 22:54:57 +00:00
Robert V. Baron
0f45501efd Don't print diagnostic anymore 1998-12-04 18:44:21 +00:00
Dmitrij Tejblum
5c5926277e Honor MNT_NOATIME.
PR:		8383
Submitted by:	Carl Mascott <cmascott@world.std.com>
1998-11-29 22:38:57 +00:00
Bruce Evans
1e1c37f1cd Return ENOTTY instead of EBADF for ioctls on dead vnodes. This fixes
tcsetpgrp() on controlling terminals that are no longer associated
with the session of the calling process, not to mention ioctl.2.
1998-11-22 09:19:07 +00:00
Dmitrij Tejblum
bad3d41d83 Support NT VFAT lower case flags.
PR:		8383
(Mostly) Submitted by:	Carl Mascott <cmascott@world.std.com>
1998-11-21 00:20:24 +00:00
Robert V. Baron
b3a2ec1e44 A few bug fixes for Robert Watson 1998-11-16 19:48:26 +00:00
Bruce Evans
c25ded316f Finished updating module event handlers to be compatible with
modeventhand_t.
1998-11-15 15:33:52 +00:00
Robert V. Baron
a6c122eaf6 coda_lookup now passes up an extra flag. But old veni will
be ok; new veni will check /dev/cfs0 to make sure that a new
kernel is running.
Also, a bug in vc_nb_close iff CODA_SIGNAL's were seen has been
fixed.
1998-11-11 20:32:20 +00:00
Peter Wemm
1c5bb3eaa1 add #include <sys/kernel.h> where it's needed by MALLOC_DEFINE() 1998-11-10 09:16:29 +00:00
Peter Wemm
5187e87901 "fix" a warning that has been bugging me for ages. Eliminate a couple
of temporary variables since they are only used once and their types
were the cause of the warnings.
1998-11-09 09:21:25 +00:00
Peter Wemm
7b91328a39 Support KLD. We register and unregister two modules. "coda" (the vfs)
via VFS_SET(), and "codadev" for the cdevsw entry.  From kldstat -v:
 3    1 0xf02c5000 115d8    coda.ko
        Contains modules:
                Id Name
                 2 codadev
                 3 coda
1998-11-03 08:55:06 +00:00
Peter Wemm
8c14bf40a1 Change the #ifdef UNION code into a callable hook. Arrange to have this
set up when unionfs is present, either statically or as a kld module.
1998-11-03 08:01:48 +00:00
Peter Wemm
40c8cfe552 Use TAILQ macros for clean/dirty block list processing. Set b_xflags
rather than abusing the list next pointer with a magic number.
1998-10-31 15:31:29 +00:00
Peter Wemm
44fdad9976 Use vtruncbuf() rather than vinvalbuf() when shortening files. 1998-10-29 09:29:17 +00:00
Robert V. Baron
6f72efa21b Change the way unmounting happens to guarantee that the
client programs are allowed to finish up (coda_call is
forced to complete) and release their locks.  Thus there
is a reasonable chance that the vflush implicit in the
unmount will not get hung on held locks.
1998-10-28 20:31:13 +00:00
Robert V. Baron
e8e04c2b37 Venus must be passed O_CREAT flag on VOP_OPEN iff this is
a creat so that we can will allow a mode 444 file to be
written into.  Sync with the latest coda.h and deal with
collateral damage.
1998-10-28 19:33:50 +00:00
David Greenman
730075613a Added a second argument, "activate" to the vm_page_unwire() call so that
the caller can select either inactive or active queue to put the page on.
1998-10-28 13:37:02 +00:00
Bruce Evans
569555b969 Removed redundant bitrotted checks for major numbers instead of updating
them.
1998-10-26 08:53:13 +00:00
Bruce Evans
65baf8f06b Don't follow null bdevsw pointers. The `major(dev) < nblkdev' test rotted
when bdevsw[] became sparse.  We still depend on magic to avoid having to
check that (v_rdev) device numbers in vnodes are not NODEV.
1998-10-25 19:26:18 +00:00
Poul-Henning Kamp
f5ef029e92 Nitpicking and dusting performed on a train. Removes trivial warnings
about unused variables, labels and other lint.
1998-10-25 17:44:59 +00:00
Robert V. Baron
ecee3646ce Fixes for lkm:
1. use VFS_LKM vs ACTUALLY_LKM_NOT_KERNEL
2. don't pass -DCODA to lkm build
1998-09-29 20:19:45 +00:00
Robert V. Baron
059b1b8277 Cleanup and fix THE bug 1998-09-28 20:52:58 +00:00
Robert V. Baron
435385d6ae Don't lose this file 1998-09-25 17:40:50 +00:00
Robert V. Baron
6a6e8b2134 Put "stray" printouts under DIAGNOSTIC. Make everything build
with DEBUG on.  Add support for lkm.  (The macro's don't work
for me; for a good chuckle look at the end of coda_fbsd.c.)
1998-09-25 17:38:32 +00:00
Søren Schmidt
d024c95599 Remove the SLICE code.
This clearly needs alot more thought, and we dont need this to hunt
us down in 3.0-RELEASE.
1998-09-14 19:56:42 +00:00
Dmitrij Tejblum
5d3e2869e5 Remove unused variable.
Pointed out by:	bde
1998-09-13 15:40:31 +00:00
Dmitrij Tejblum
e27b047ccf Fix a bug related to renaming in root directory. This bug reported by
Cejka Rudolf <cejkar@dcse.fee.vutbr.cz> on freebsd-current in Messaage-Id
<199807141023.MAA09803@kazi.dcse.fee.vutbr.cz>.

Reviewed by:	bde
1998-09-13 15:39:01 +00:00
Robert V. Baron
d3459488ae Finish conversion of cfs -> coda 1998-09-13 13:57:59 +00:00
Poul-Henning Kamp
649c00db71 various nits that didn't make it through the brucefilter. 1998-09-12 20:21:54 +00:00
Robert V. Baron
9afcea2f4a All the references to cfs, in symbols, structs, and strings
have been changed to coda.  (Same for CFS.)
1998-09-11 18:50:17 +00:00
Bruce Evans
8994ca3ce9 Removed statically configured mount type numbers (MOUNT_*) and all
references to them.

The change a couple of days ago to ignore these numbers in statically
configured vfsconf structs was slightly premature because the cd9660,
cfs, devfs, ext2fs, nfs vfs's still used MOUNT_* instead of the number
in their vfsconf struct.
1998-09-07 13:17:06 +00:00
Guido van Rooij
a031dfd5e2 Fix problem reported on bugtraq: check permission of device mounted
for non-root users. Fortunately, the default for vfs.usermount is 0.
Tested by:	"Jan B. Koum " <jkb@best.com
1998-09-07 07:20:30 +00:00
Robert V. Baron
03507b2123 Clean LINT 1998-09-06 20:01:34 +00:00
Poul-Henning Kamp
0375c9f2b8 Add a new vnode op, VOP_FREEBLKS(), which filesystems can use to inform
device drivers about sectors no longer in use.

Device-drivers receive the call through d_strategy, if they have
D_CANFREE in d_flags.

This allows flash based devices to erase the sectors and avoid
pointlessly carrying them around in compactions.

Reviewed by:	Kirk Mckusick, bde
Sponsored by:	M-Systems (www.m-sys.com)
1998-09-05 14:13:12 +00:00
Doug Rabson
e69763a315 Cosmetic changes to the PAGE_XXX macros to make them consistent with
the other objects in vm.
1998-09-04 08:06:57 +00:00
Robert V. Baron
41159be768 Pass2 complete 1998-09-02 19:09:53 +00:00
Robert V. Baron
e19a190886 Very Preliminary Coda 1998-08-29 21:14:52 +00:00
Poul-Henning Kamp
a9ea5c0c51 sort the prototypes 1998-08-25 17:48:54 +00:00
Poul-Henning Kamp
07fe032454 Last commit managed to get mangled somehow. 1998-08-24 18:23:18 +00:00
Poul-Henning Kamp
1d9b3ba13d Remove the last remaining evidence of B_TAPE.
Reclaim 3 unused bits in b_flags
1998-08-24 17:47:25 +00:00
Bruce Evans
4e9a89772a Enabled Lite2 fix for reading from dead ttys. 1998-08-23 11:43:29 +00:00
Bruce Evans
0492d857d1 Removed unused includes. 1998-08-17 19:09:36 +00:00
Bruce Evans
86a14a7a0a Use [u]intptr_t instead of [u_]long for casts between pointers and
integers.  Don't forget to cast to (void *) as well.
1998-08-16 01:21:52 +00:00
Bruce Evans
89785a1654 Fixed printf format errors. 1998-07-30 17:40:45 +00:00
Alexander Langer
f35f7d0dfd Style fixes and a bug fix: don't remove the exit handler if unmount
fails.

Submitted by:	bde
1998-07-27 22:47:17 +00:00
Alexander Langer
3f47ee5c4d A better solution to the rm_at_exit problem: Register the exit function
during first mount.  Unregister the exit function at last unmount.

Concept by:	sef
Reviewed by:	sef
Implemented by:	alex
1998-07-27 01:07:01 +00:00
Alexander Langer
ca2be56ff9 Override the default VFS LKM dispatch functions so that a module
unload function can be provided (this is necessary to unregister
the at_exit handler).
1998-07-25 15:52:44 +00:00
Bruce Evans
15c7382561 Cast pointers to [u]intptr_t instead of to [unsigned] long. 1998-07-15 04:17:55 +00:00
Bruce Evans
a23d65bfc8 Cast pointers to uintptr_t/intptr_t instead of to u_long/long,
respectively.  Most of the longs should probably have been
u_longs, but this changes is just to prevent warnings about
casts between pointers and integers of different sizes, not
to fix poorly chosen types.
1998-07-15 02:32:35 +00:00
Bruce Evans
ac1e407b32 Fixed printf format errors. 1998-07-11 07:46:16 +00:00
Bruce Evans
96eb19e1a3 Quick fix for type mismatches which were fatal if longs aren't 32
bits.  We used a private, wrong, version of `struct dirent' to help
break getdirentries(), and we use a silly check that the size of this
struct is a power of 2 to help break mount() if getdirentries() would
not work.  This fix just changes the struct to match `struct dirent'
(except for the name length).
1998-07-07 04:08:44 +00:00
Julian Elischer
f7ea2f55d1 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
Julian Elischer
fd5d1124e2 VOP_STRATEGY grows an (struct vnode *) argument
as the value in b_vp is often not really what you want.
(and needs to be frobbed). more cleanups will follow this.
Reviewed by: Bruce Evans <bde@freebsd.org>
1998-07-04 20:45:42 +00:00
Dmitrij Tejblum
6bfc1a02b1 Remove "not hungly" panics. Cookies now used by the linux and ibcs2
emulators. The emulators assume that filesystem may just ignore cookies, and
handle this case correctly. So we just ignore cookies.

Also sync *_readdir "prototypes" with reality.
1998-06-25 16:54:41 +00:00
Bruce Evans
a395dbb153 Avoid a 64-bit division in procfs_readdir(). Fixed related overflows.
Check args using the same expression as in fdesc and kernfs.  The check
was actually already correct, modulo overflow.  It could be tightened
up to either allow huge (aligned) offsets, treating them as EOF, or
disallow all offsets beyond EOF.

Didn't fix invalid address calculation &foo[i] where i may be out of
bounds.

Didn't fix shooting of foot using a private unportable dirent struct.
1998-06-14 12:53:39 +00:00
Bruce Evans
a41878a77a Avoid a 64-bit division in fdesc_readdir(). Fixed related overflows
and missing arg checking.

Panic instead of returning bogus error codes or forgetting to check
all cases if fdesc_readdir() gets called for a non-directory.  This
can't happen.
1998-06-14 08:46:41 +00:00
Doug Rabson
9d8b200937 Make these files compile. 1998-06-10 21:21:31 +00:00
Alexander Langer
6ead682113 ENOPNOTSUPP --> EOPNOTSUPP
PR:		6906
Submitted by:	Steven G. Kargl <kargl@troutmask.apl.washington.edu>
1998-06-10 19:56:06 +00:00
Dmitrij Tejblum
40b0939a15 Back out previous change. This behavior is at least completely
"susv2"-compliant.
1998-06-10 13:46:46 +00:00
Dmitrij Tejblum
75065d2cd8 Also return EOPNOTSUPP rather than EINVAL for not supported owner and group
changes.
1998-06-10 11:36:01 +00:00
Peter Wemm
7a204420d3 Don't silently accept attempts to change flags where they are not
supported.
1998-06-10 06:34:57 +00:00
Peter Wemm
c3a24f69d9 Return EOPNOTSUPP rather than EINVAL for flags that are not supported. 1998-06-10 06:30:31 +00:00
Dmitrij Tejblum
ffbdd68eba Fix typo in a comment. 1998-06-09 13:20:29 +00:00
Doug Rabson
ecbb00a262 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
John Dyson
cf2819ccb8 Make flushing dirty pages work correctly on filesystems that
unexpectedly do not complete writes even with sync I/O requests.
This should help the behavior of mmaped files when using
softupdates (and perhaps in other circumstances also.)
1998-05-21 07:47:58 +00:00
Tor Egge
afc6ea238f Disallow reading the current kernel stack. Only the user structure and
the current registers should be accessible.
Reviewed by:	David Greenman <dg@root.com>
1998-05-19 00:00:14 +00:00
Dmitrij Tejblum
af9f1d50ae Fix priority bug in previous commit.
Submitted by:	bde
1998-05-18 10:24:26 +00:00
Dmitrij Tejblum
011cdb576c Fix support for pre-Win95 filesystems: Make it possible to lookup just
created short file name. Don't insert "generation numbers".
1998-05-17 21:18:08 +00:00
Dmitrij Tejblum
058ef24617 Remove bogus LK_RETRY.
Submitted by:	bde
1998-05-17 21:03:35 +00:00
Bruce Evans
5097a20d6e Don't forget to clean up after an error reading the directory entry
in deget().
1998-05-17 18:09:28 +00:00
Bruce Evans
84de3fb77d Removed vestiges of pre-Lite2 locking. 1998-05-17 18:00:45 +00:00
Poul-Henning Kamp
c21410e119 s/nanoruntime/nanouptime/g
s/microruntime/microuptime/g

Reviewed by:	bde
1998-05-17 11:53:46 +00:00
Søren Schmidt
0e1e9fdca6 Cleanup after Garret, include unpch.h to get at various macros.. 1998-05-17 09:37:39 +00:00
Dmitrij Tejblum
191e6fd0b6 Fix off by ane error in previous commit.
This caused following commands:
	mkdir z
	cd z
	touch A B
	mv B A
corrupt the '..' entry in 'z'.

Reported by:	bde
1998-05-09 09:36:38 +00:00
Mike Smith
7be2d30077 In the words of the submitter:
---------
Make callers of namei() responsible for releasing references or locks
instead of having the underlying filesystems do it.  This eliminates
redundancy in all terminal filesystems and makes it possible for stacked
transport layers such as umapfs or nullfs to operate correctly.

Quality testing was done with testvn, and lat_fs from the lmbench suite.

Some NFS client testing courtesy of Patrik Kudo.

vop_mknod and vop_symlink still release the returned vpp.  vop_rename
still releases 4 vnode arguments before it returns.  These remaining cases
will be corrected in the next set of patches.
---------

Submitted by:	Michael Hancock <michaelh@cet.co.jp>
1998-05-07 04:58:58 +00:00
Mike Smith
79cc756d8b As described by the submitter:
Reverse the VFS_VRELE patch.  Reference counting of vnodes does not need
to be done per-fs.  I noticed this while fixing vfs layering violations.
Doing reference counting in generic code is also the preference cited by
John Heidemann in recent discussions with him.

The implementation of alternative vnode management per-fs is still a valid
requirement for some filesystems but will be revisited sometime later,
most likely using a different framework.

Submitted by:	Michael Hancock <michaelh@cet.co.jp>
1998-05-06 05:29:41 +00:00
Dmitrij Tejblum
c681be377c Use DFLTBSIZE instead of MAXBSIZE for pm_fatblksize.
In msdosfs_sync: spelling fix, formatting changes; fix MNT_LAZY (sync
modified denodes, don't sync device)

Mostly submitted by (and with hints from):	bde

Increase limit for maximum disk size: as far as I can see previous limit was
gratuitously too low.
1998-04-29 12:55:51 +00:00
John Dyson
c0877f103f Tighten up management of memory and swap space during map allocation,
deallocation cycles.  This should provide a measurable improvement
on swap and memory allocation on loaded systems.  It is unlikely a
complete solution.  Also, provide more map info with procfs.
Chuck Cranor spurred on this improvement.
1998-04-29 04:28:22 +00:00
Julian Elischer
ff1f112b1a The 'mountroot' option is obviously pointless for an LKM
so allow LKM compilation to succeed by making it go away for that case.
Saves needing to include opt_devfs.h which an LKM cannot rely on anyhow.
1998-04-20 23:18:46 +00:00
Julian Elischer
c0bab11dfe Make the devfs SLICE option a standard type option.
(hopefully it will go away eventually anyhow)
1998-04-20 03:57:41 +00:00
Julian Elischer
3e425b968d 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
Dag-Erling Smørgrav
dc73342347 Seventy-odd "its" / "it's" typos in comments fixed as per kern/6108. 1998-04-17 22:37:19 +00:00
Bruce Evans
c1087c1324 Support compiling with `gcc -ansi'. 1998-04-15 17:47:40 +00:00
Dmitrij Tejblum
206faeeef7 Add a missing LK_RETRY.
Noticed by: Bruce (almost 2 monts ago)

Remove a debugging printf.
1998-04-15 11:04:53 +00:00
Poul-Henning Kamp
7cd5051bec Use random() rather then than homegrown stuff. 1998-04-06 11:39:04 +00:00
Andrey A. Chernov
aaf0bb1961 Print explanation diagnostics when mount is impossible
Submitted by: Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
1998-04-05 13:10:11 +00:00
Poul-Henning Kamp
00af9731c9 Time changes mark 2:
* Figure out UTC relative to boottime.  Four new functions provide
      time relative to boottime.

    * move "runtime" into struct proc.  This helps fix the calcru()
      problem in SMP.

    * kill mono_time.

    * add timespec{add|sub|cmp} macros to time.h.  (XXX: These may change!)

    * nanosleep, select & poll takes long sleeps one day at a time

Reviewed by:    bde
Tested by:      ache and others
1998-04-04 13:26:20 +00:00
Andrey A. Chernov
32d3966f1a Fix dead hang writing to FAT
Submitted by: Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
1998-03-28 07:22:03 +00:00
Poul-Henning Kamp
a0502b19d4 Add two new functions, get{micro|nano}time.
They are atomic, but return in essence what is in the "time" variable.
gettime() is now a macro front for getmicrotime().

Various patches to use the two new functions instead of the various
hacks used in their absence.

Some puntuation and grammer patches from Bruce.

A couple of XXX comments.
1998-03-26 20:54:05 +00:00
KATO Takenori
a8e4411603 Deleted 1024bytes/sector floppy code for PC-98 arch. The
1024bytes/sector code has not worked for long time and it should be
re-implemented.
1998-03-20 02:33:42 +00:00
KATO Takenori
b2bde4cb07 If lowervp is NULLVP, vap was clobbered.
Submitted by:	Naofumi Honda <honda@Kururu.math.sci.hokudai.ac.jp>
Obtained from:	NetBSD/pc98
1998-03-17 08:47:50 +00:00
Julian Elischer
b1897c197c Reviewed by: dyson@freebsd.org (john Dyson), dg@root.com (david greenman)
Submitted by:	Kirk McKusick (mcKusick@mckusick.com)
Obtained from:  WHistle development tree
1998-03-08 09:59:44 +00:00
John Dyson
2abc1ef602 Initialize b_resid, and also print out better diagnostics on I/O
errors.  This will allow for better tracking of user error reports.
1998-03-08 08:46:18 +00:00
John Dyson
8f9110f6a1 This mega-commit is meant to fix numerous interrelated problems. There
has been some bitrot and incorrect assumptions in the vfs_bio code.  These
problems have manifest themselves worse on NFS type filesystems, but can
still affect local filesystems under certain circumstances.  Most of
the problems have involved mmap consistancy, and as a side-effect broke
the vfs.ioopt code.  This code might have been committed seperately, but
almost everything is interrelated.

1)	Allow (pmap_object_init_pt) prefaulting of buffer-busy pages that
	are fully valid.
2)	Rather than deactivating erroneously read initial (header) pages in
	kern_exec, we now free them.
3)	Fix the rundown of non-VMIO buffers that are in an inconsistent
	(missing vp) state.
4)	Fix the disassociation of pages from buffers in brelse.  The previous
	code had rotted and was faulty in a couple of important circumstances.
5)	Remove a gratuitious buffer wakeup in vfs_vmio_release.
6)	Remove a crufty and currently unused cluster mechanism for VBLK
	files in vfs_bio_awrite.  When the code is functional, I'll add back
	a cleaner version.
7)	The page busy count wakeups assocated with the buffer cache usage were
	incorrectly cleaned up in a previous commit by me.  Revert to the
	original, correct version, but with a cleaner implementation.
8)	The cluster read code now tries to keep data associated with buffers
	more aggressively (without breaking the heuristics) when it is presumed
	that the read data (buffers) will be soon needed.
9)	Change to filesystem lockmgr locks so that they use LK_NOPAUSE.  The
	delay loop waiting is not useful for filesystem locks, due to the
	length of the time intervals.
10)	Correct and clean-up spec_getpages.
11)	Implement a fully functional nfs_getpages, nfs_putpages.
12)	Fix nfs_write so that modifications are coherent with the NFS data on
	the server disk (at least as well as NFS seems to allow.)
13)	Properly support MS_INVALIDATE on NFS.
14)	Properly pass down MS_INVALIDATE to lower levels of the VM code from
	vm_map_clean.
15)	Better support the notion of pages being busy but valid, so that
	fewer in-transit waits occur.  (use p->busy more for pageouts instead
	of PG_BUSY.)  Since the page is fully valid, it is still usable for
	reads.
16)	It is possible (in error) for cached pages to be busy.  Make the
	page allocation code handle that case correctly.  (It should probably
	be a printf or panic, but I want the system to handle coding errors
	robustly.  I'll probably add a printf.)
17)	Correct the design and usage of vm_page_sleep.  It didn't handle
	consistancy problems very well, so make the design a little less
	lofty.  After vm_page_sleep, if it ever blocked, it is still important
	to relookup the page (if the object generation count changed), and
	verify it's status (always.)
18)	In vm_pageout.c, vm_pageout_clean had rotted, so clean that up.
19)	Push the page busy for writes and VM_PROT_READ into vm_pageout_flush.
20)	Fix vm_pager_put_pages and it's descendents to support an int flag
	instead of a boolean, so that we can pass down the invalidate bit.
1998-03-07 21:37:31 +00:00
Mike Smith
651ae11e2f Trivial filesystem getpages/putpages implementations, set the second.
These should be considered the first steps in a work-in-progress.
Submitted by:	Terry Lambert <terry@freebsd.org>
1998-03-06 09:46:52 +00:00
John Dyson
aeb52ab0eb Fix certain kinds of block device operations. For example, tunefs on
a block device shouldn't crash the system anymore.
1998-03-04 06:44:59 +00:00
Mike Smith
3f75478c2e Patch to the last commit; attempt to unspam stuff from NetBSD.
Submitted by:	Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
1998-03-03 02:50:24 +00:00
Mike Smith
34bdbbd0de The intent is to get rid of WILLRELE in vnode_if.src by making
a complement to all ops that return a vpp, VFS_VRELE.  This is
initially only for file systems that implement the following ops
that do a WILLRELE:

	vop_create, vop_whiteout, vop_mknod, vop_remove, vop_link,
	vop_rename, vop_mkdir, vop_rmdir, vop_symlink

This is initial DNA that doesn't do anything yet.  VFS_VRELE is
implemented but not called.

A default vfs_vrele was created for fs implementations that use the
standard vnode management routines.

VFS_VRELE implementations were made for the following file systems:

Standard (vfs_vrele)
	ffs mfs nfs msdosfs devfs ext2fs

Custom
	union umapfs

Just EOPNOTSUPP
	fdesc procfs kernfs portal cd9660

These implementations may change as VOP changes are implemented.

In the next phase, in the vop implementations calls to vrele and the vrele
part of vput will be moved to the top layer vfs_vnops and made visible
to all layers.  vput will be replaced by unlock in these cases.  Unlocking
will still be done in the per fs layer but the refcount decrement will be
triggered at the top because it doesn't hurt to hold a vnode reference a
little longer.  This will have minimal impact on the structure of the
existing code.

This will only be done for vnode arguments that are released by the various
fs vop implementations.

Wider use of VFS_VRELE will likely require restructuring of the code.

Reviewed by:	phk, dyson, terry et. al.
Submitted by:	Michael Hancock <michaelh@cet.co.jp>
1998-03-01 22:46:53 +00:00
Mike Smith
ea0665cd2b Fix mmap() on msdosfs. In the words of the submitter:
|In the process of evaluating the getpages/putpages issues I discovered
|that mmap on MSDOSFS does not work. This is because I blindly merged
|NetBSD changes in msdosfs_bmap and msdosfs_strategy. Apparently, their
|blocksize is always DEV_BSIZE (even in files), while in FreeBSD
|blocksize in files is v_mount->mnt_stat.f_iosize (i.e. clustersize in
|MSDOSFS case). The patch is below.

Submitted by:	Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
1998-03-01 21:26:09 +00:00
Mike Smith
cce0eefd5a Fix a problem with the conversion of Unix filenames into the VFAT
namespace.
Submitted by:	Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
1998-02-27 12:22:22 +00:00
Mike Smith
69a36f24fb Fixes for some bugs in the VFAT/FAT32 support:
- 'mv longnamedfile1 longnamedfile2' would cause longnamedfile2 to lose its
   long name.
 - Long names have trailing spaces/dots stripped for lookup as well as
   assignment.
 - A lockup when the mdsosfs was accessed from within the Linux emulator is fixed.
 - A bug whereby long filenames were recognised by Microsoft operating systems but
   not FreeBSD is fixed.

Submitted by:	Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
1998-02-26 06:45:46 +00:00
KATO Takenori
589421d418 Deleted KLOCK-hack. 1998-02-26 03:23:56 +00:00
Andrey A. Chernov
5114f1d7c6 Back out "always view in lowercase" part
Return to previous variant "comparing in lowercase" in winChkName
1998-02-24 14:13:16 +00:00
Andrey A. Chernov
7391f6114e Implement loadable DOS<->local conversion tables for DOS names
Always create DOS name in uppercase
Always view DOS name in lowercase
1998-02-23 16:44:37 +00:00
KATO Takenori
efa0ac5b6f Fix signatures of NEC's DOS formats.
Submitted by:	Takahashi Yoshihiro <nyan@wyvern.cc.kogakuin.ac.jp>
1998-02-23 14:57:50 +00:00
Andrey A. Chernov
64fb806ca2 Oops, add missing bcopy of upper->lower table 1998-02-23 09:59:08 +00:00
Andrey A. Chernov
b998efa98d Implement loadable upper->lower local conversion table 1998-02-23 09:39:29 +00:00
Andrey A. Chernov
a4f93748d2 Reduce new arguments number added in my changes 1998-02-22 18:00:54 +00:00
Andrey A. Chernov
4d63452f4e Add Unicode support to winChkName, now lookup works! 1998-02-22 17:26:27 +00:00
Andrey A. Chernov
13df76f25a Implement loadable local<->unicode file names conversion
Note: it produce correct names only for Win95, DOS names are still
incorrect and need similar work
mount_msdos support coming soon
1998-02-22 15:09:54 +00:00
Andrey A. Chernov
794d43e27f Replace all unknown Unicode characters with '?' in win->unix mapping 1998-02-22 12:22:23 +00:00
Andrey A. Chernov
2b5b6623f6 Add initial support to map 0x4XX Unicode Cyrillic range names:
only win->unix part is implemented at this time with 256-byte
table defaulted to KOI8-R (will be loadable in future).
Since back mapping not supported yet, you'll get "No such file or directory"
on each Cyrillic name with 'ls -l', only 'echo *' work at this moment.
Teach current code to understand Unicode a bit.
1998-02-22 12:05:42 +00:00
Bruce Evans
39e4376ba7 Removed unused #includes. 1998-02-20 13:11:54 +00:00
Jordan K. Hubbard
952a6212d9 Update MSDOSFS code using NetBSD's msdosfs as a guide to support
FAT32 partitions.  Unfortunately, we looked around here at
Walnut Creek CDROM for any newer FAT32-supporting versions
of Win95 and we were unsuccessful; only the older stuff here.
So this is untested beyond simply making sure it compiles and
someone with access to an actual FAT32 fs will have
to let us know how well it actually works.
Submitted by:	Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru>
Obtained from:	NetBSD
1998-02-18 09:28:47 +00:00
KATO Takenori
3e7e515734 Deleted unused variable. 1998-02-10 08:04:31 +00:00
KATO Takenori
d6476ada99 Undo UN_KLOCK hack except union_allocvp(). Now, vput() doesn't lock
the vnode.
1998-02-10 03:32:07 +00:00
Eivind Eklund
303b270b0a Staticize. 1998-02-09 06:11:36 +00:00
KATO Takenori
ca6f868824 Fixed pagefault when cred == NOCRED.
PR:		5632
1998-02-07 01:36:24 +00:00
KATO Takenori
39ca14f032 Fixed number of entries in gid-mapfile.
PR:		5640
1998-02-07 01:34:32 +00:00
Eivind Eklund
0b08f5f737 Back out DIAGNOSTIC changes. 1998-02-06 12:14:30 +00:00
KATO Takenori
87884aad6e Workarround for DIAGNOSTIC kernel's panic in union_lookup().
Union_removed_upper() clobbers cache when file is removed.
Upper vp will be removed by union_reclaim().
1998-02-06 02:42:21 +00:00
John Dyson
95461b450d 1) Start using a cleaner and more consistant page allocator instead
of the various ad-hoc schemes.
2)	When bringing in UPAGES, the pmap code needs to do another vm_page_lookup.
3)	When appropriate, set the PG_A or PG_M bits a-priori to both avoid some
	processor errata, and to minimize redundant processor updating of page
	tables.
4)	Modify pmap_protect so that it can only remove permissions (as it
	originally supported.)  The additional capability is not needed.
5)	Streamline read-only to read-write page mappings.
6)	For pmap_copy_page, don't enable write mapping for source page.
7)	Correct and clean-up pmap_incore.
8)	Cluster initial kern_exec pagin.
9)	Removal of some minor lint from kern_malloc.
10)	Correct some ioopt code.
11)	Remove some dead code from the MI swapout routine.
12)	Correct vm_object_deallocate (to remove backing_object ref.)
13)	Fix dead object handling, that had problems under heavy memory load.
14)	Add minor vm_page_lookup improvements.
15)	Some pages are not in objects, and make sure that the vm_page.c can
	properly support such pages.
16)	Add some more page deficit handling.
17)	Some minor code readability improvements.
1998-02-05 03:32:49 +00:00
Eivind Eklund
47cfdb166d Turn DIAGNOSTIC into a new-style option. 1998-02-04 22:34:03 +00:00
Bruce Evans
9cf2c3e77a Forward declare some structs so that this file is more self-sufficient. 1998-02-03 21:52:02 +00:00
Bruce Evans
c53e436efc Forward declare some structs so that this file is more self-sufficient.
Don't declare kernel objects or functions unless KERNEL is defined.
1998-02-03 21:39:30 +00:00
KATO Takenori
4e649c4174 Declare the variable `i' when UMAP_DIAGNOSTIC is defined. 1998-02-03 14:30:01 +00:00
Eivind Eklund
3f2076daf5 Make the debug options new-style.
This also zaps a DPT option from lint; it wasn't referenced from
anywhere.
1998-01-31 07:23:16 +00:00
KATO Takenori
9758931d62 Fixed typo in comment. 1998-01-25 09:44:33 +00:00
John Dyson
2d8acc0f4a VM level code cleanups.
1)	Start using TSM.
	Struct procs continue to point to upages structure, after being freed.
	Struct vmspace continues to point to pte object and kva space for kstack.
	u_map is now superfluous.
2)	vm_map's don't need to be reference counted.  They always exist either
	in the kernel or in a vmspace.  The vmspaces are managed by reference
	counts.
3)	Remove the "wired" vm_map nonsense.
4)	No need to keep a cache of kernel stack kva's.
5)	Get rid of strange looking ++var, and change to var++.
6)	Change more data structures to use our "zone" allocator.  Added
	struct proc, struct vmspace and struct vnode.  This saves a significant
	amount of kva space and physical memory.  Additionally, this enables
	TSM for the zone managed memory.
7)	Keep ioopt disabled for now.
8)	Remove the now bogus "single use" map concept.
9)	Use generation counts or id's for data structures residing in TSM, where
	it allows us to avoid unneeded restart overhead during traversals, where
	blocking might occur.
10)	Account better for memory deficits, so the pageout daemon will be able
	to make enough memory available (experimental.)
11)	Fix some vnode locking problems. (From Tor, I think.)
12)	Add a check in ufs_lookup, to avoid lots of unneeded calls to bcmp.
	(experimental.)
13)	Significantly shrink, cleanup, and make slightly faster the vm_fault.c
	code.  Use generation counts, get rid of unneded collpase operations,
	and clean up the cluster code.
14)	Make vm_zone more suitable for TSM.

This commit is partially as a result of discussions and contributions from
other people, including DG, Tor Egge, PHK, and probably others that I
have forgotten to attribute (so let me know, if I forgot.)

This is not the infamous, final cleanup of the vnode stuff, but a necessary
step.  Vnode mgmt should be correct, but things might still change, and
there is still some missing stuff (like ioopt, and physical backing of
non-merged cache files, debugging of layering concepts.)
1998-01-22 17:30:44 +00:00
KATO Takenori
bda1412586 Delete unused code in union_fsync(). 1998-01-22 02:14:59 +00:00
KATO Takenori
3ae6029808 - Move SETKLOC and CLEARKLOCK macros into uion.h.
- Set UN_ULOCK in union_lock() when UN_KLOCK is set.  Caller expects
  that vnode is locked correctly, and may call another function which
  expects locked vnode and may unlock the vnode.
- Do not assume the behavior of inside functions in FreeBSD's
  vfs_suber.c is same as 4.4BSD-Lite2.  Vnode may be locked in
  vget() even though flag is zero.  (Locked vnode is, of course,
  unlocked before returning from vget.)
1998-01-20 10:02:54 +00:00
KATO Takenori
471f80601f Workarround for locking violation while recycling vnode which union fs
used in freelist.
1998-01-18 08:17:48 +00:00
KATO Takenori
afc2a5581f Improve and revise fixes for locking violation.
Obtained from:	NetBSD/pc98
1998-01-18 07:56:41 +00:00
John Dyson
95e5e988e0 Make our v_usecount vnode reference count work identically to the
original BSD code.  The association between the vnode and the vm_object
no longer includes reference counts.  The major difference is that
vm_object's are no longer freed gratuitiously from the vnode, and so
once an object is created for the vnode, it will last as long as the
vnode does.

When a vnode object reference count is incremented, then the underlying
vnode reference count is incremented also.  The two "objects" are now
more intimately related, and so the interactions are now much less
complex.

When vnodes are now normally placed onto the free queue with an object still
attached.  The rundown of the object happens at vnode rundown time, and
happens with exactly the same filesystem semantics of the original VFS
code.  There is absolutely no need for vnode_pager_uncache and other
travesties like that anymore.

A side-effect of these changes is that SMP locking should be much simpler,
the I/O copyin/copyout optimizations work, NFS should be more ponderable,
and further work on layered filesystems should be less frustrating, because
of the totally coherent management of the vnode objects and vnodes.

Please be careful with your system while running this code, but I would
greatly appreciate feedback as soon a reasonably possible.
1998-01-06 05:26:17 +00:00
Sean Eric Fagan
dd30ff81d9 Use CHECKIO in procfs_ioctl() to ensure that any changes in UID/GID result
in the expected failure.
1998-01-06 01:37:12 +00:00
Bruce Evans
cf6347f79b Fixed missing initialization of mp->mnt_stat. At least vm depends on
at least mp->mnt_stat.f_iosize being nonzero.

PR:		5212
1998-01-01 08:28:26 +00:00
Bruce Evans
a954e88d0b Fixed a missing/misplaced/misstyled prototype. 1997-12-30 08:46:44 +00:00
John Dyson
2be70f79f6 Lots of improvements, including restructring the caching and management
of vnodes and objects.  There are some metadata performance improvements
that come along with this.  There are also a few prototypes added when
the need is noticed.  Changes include:

1) Cleaning up vref, vget.
2) Removal of the object cache.
3) Nuke vnode_pager_uncache and friends, because they aren't needed anymore.
4) Correct some missing LK_RETRY's in vn_lock.
5) Correct the page range in the code for msync.

Be gentle, and please give me feedback asap.
1997-12-29 00:25:11 +00:00
Bruce Evans
675ea6f083 Unspammed nested include of <vm/vm_zone.h>. 1997-12-27 02:56:39 +00:00
Joerg Wunsch
7301b27b15 Properly clean out the SI_MOUNTEDON flag iff the mount attempt fails
half the way down.  Otherwise, further attempts to mount the device
will be rejected with BUSY.

IMHO, this flag can completely go away for cd9660.  There's no reason
you need to prevent CDs from being mounted multiple times, and in case
of multisession CDs it can even make sense to mount two different
sessions by the same time (to different mount points, otherwise it
would be pointless ;).
1997-12-21 21:40:02 +00:00
Sean Eric Fagan
d5f81602a7 Clear the p_stops field on change of user/group id, unless the correct
flag is set in the p_pfsflags field.  This, essentially, prevents an SUID
proram from hanging after being traced.  (E.g., "truss /usr/bin/rlogin" would
fail, but leave rlogin in a stopevent state.)  Yet another case where procctl
is (hopefully ;)) no longer needed in the general case.

Reviewed by:	bde (thanks bruce :))
1997-12-20 03:05:47 +00:00
Bruce Evans
b3a66dd356 Set the sender's low watermark to match the maximum size for atomic
writes that we advertise (PIPE_BUF = 512).
1997-12-19 18:58:14 +00:00
Garrett Wollman
1cbbd625cc Add support for poll(2) on files. vop_nopoll() now returns POLLNVAL
if one of the new poll types is requested; hopefully this will not break
any existing code.  (This is done so that programs have a dependable
way of determining whether a filesystem supports the extended poll types
or not.)

The new poll types added are:

	POLLWRITE - file contents may have been modified
	POLLNLINK - file was linked, unlinked, or renamed
	POLLATTRIB - file's attributes may have been changed
	POLLEXTEND - file was extended

Note that the internal operation of poll() means that it is impossible
for two processes to reliably poll for the same event (this could
be fixed but may not be worth it), so it is not possible to rewrite
`tail -f' to use poll at this time.
1997-12-15 03:09:59 +00:00
Bruce Evans
80987b7a3b Fixed EOF handing.
1. SS_CANTRCVMORE was initially set on the wrong socket, so reads
when there has never been a writer on the socket did not return 0.
Note that such reads are only possible if the fifo was opened in
(O_RDONLY | O_NONBLOCK) mode.

2. SS_CANTSENDMORE was initially set on the wrong socket, but this
was harmless because the wrong socket is never sent from and there
is no need to set the flag initially on the right socket (since open
in (O_WRONLY | O_NONBLOCK) mode fails if there is no reader...).

3. SS_CANTRCVMORE was cleared when read() returns.  This broke the
case where read() returns 0 - subsequent reads are supposed to
return 0 until a writer appears.  There is no need to clear the
flag when read() returns, since it is cleared correctly when a
writer appears.
1997-12-13 13:49:59 +00:00
Bruce Evans
5fb0d3e0b3 Restored fifo_pathconf() from rev.1.32. vop_stdpathconf() is too
general to be of much use.  Using it here weakened the _PC_MAX_CANON,
_PC_MAX_INPUT and _PC_VDISABLE cases.

fifo_pathconf() is not quite correct either.  _PC_CHOWN_RESTRICTED
and _PC_LINK_MAX should be handled by the host file system.  For
directories, the host file system should let us handle _PC_PIPE_BUF.
1997-12-13 12:58:09 +00:00
Sean Eric Fagan
d7b7dcba41 Change the ioctls for procfs around a bit; in particular, whever possible,
change from

	ioctl(fd, PIOC<foo>, &i);

to

	ioctl(fd, PIOC<foo>, i);

This is going from the _IOW to _IO ioctl macro.  The kernel, procctl, and
truss must be in synch for it all to work (not doing so will get errors about
inappropriate ioctl's, fortunately).  Hopefully I didn't forget anything :).
1997-12-13 03:13:49 +00:00
Sean Eric Fagan
ba9d19e99b Fix a problem with procfs_exit() that resulted in missing some procfs
nodes; this also apparantly caused a panic in some circumstances.
Also, since procfs_exit() is getting rid of the nodes when a process
exits, don't bother checking for the process' existance in procfs_inactive().
1997-12-12 03:33:43 +00:00
Sean Eric Fagan
7486d3658f Code to prevent a panic caused by procfs_exit(). Note that i don't know
what is teh root cause -- but, sometimes, a procfs vnode in pfshead is
apparantly corrupt (or a UFS vnode instead).  Without this patch, I can
get it to panic by doing (in csh)

	while (1)
		ps auxwww
	end

and it will panic when the PID's wrap.  With it, it does not panic.
Yes -- I know that this is NOT the right way to fix it.  But I haven't
been able to get it to panic yet (which confuses me).  I am going to
be looking into the vgone() code now, as that may be a part of it.
1997-12-09 05:03:41 +00:00
Sean Eric Fagan
bfcfe2e1b1 A couple of fixes from bruce: first of all, psignal is a void (stupid
me; unfortunately, also makes it hard ot check for errors); second, I had
managed to forget a change to PIOCSFL (it should be _IOW, not _IOR) I had
in my local copy, and Bruce called me on it.

Submitted by:	bde
1997-12-08 22:09:39 +00:00