Commit Graph

96 Commits

Author SHA1 Message Date
Poul-Henning Kamp
e3f4d3b5e8 Reduce kernel stack usage of ccdinit() by MAXPATHLEN by using MALLOC(9).
Submitted by:	Maxim Konovalov <maxim@macomnet.ru>
MFC after:	1 week
2001-12-30 17:34:19 +00:00
Ian Dowse
55a13f7dd0 Return EOPNOTSUPP for unknown module events.
PR:		kern/18473
Submitted by:	"Jeroen C. van Gelderen" <gelderen@systemics.com>
2001-11-17 00:46:08 +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
Kris Kennaway
bf61e26696 Fix some signed/unsigned integer confusion, and add bounds checking of
arguments to some functions.

Obtained from:	NetBSD
Reviewed by:	peter
MFC after:	2 weeks
2001-09-10 11:28:07 +00:00
Poul-Henning Kamp
01706d206f Kill the NCCD constant by modernizing the ccd driver.
Submitted by:	sobomax
Reviewed by:	phk
2001-09-04 08:33:30 +00:00
Poul-Henning Kamp
724682d233 Polish error handling with biofinish(). 2001-05-08 09:10:27 +00:00
Poul-Henning Kamp
a468031ce8 Actually biofinish(struct bio *, struct devstat *, int error) is more general
than the bioerror().

Most of this patch is generated by scripts.
2001-05-06 20:00:03 +00:00
Andrew Gallatin
6a5a4d0a80 fix a number of printf format string warnings inside DEBUG ifdefs 2001-03-29 15:05:08 +00:00
Poul-Henning Kamp
f83880518b Send the remains (such as I have located) of "block major numbers" to
the bit-bucket.
2001-03-26 12:41:29 +00:00
Poul-Henning Kamp
896dba5a0c Fix a braino in ccd's clone routine.
Submitted by:	tegge
2001-01-29 06:18:14 +00:00
John Baldwin
ba88dfc733 Back out proc locking to protect p_ucred for obtaining additional
references along with the actual obtaining of additional references.
2001-01-27 00:01:31 +00:00
John Baldwin
14c3599a2d Proc locking in the form of using the proc lock to protect p_ucred while
we obtain another reference to it for vnode operations.
2001-01-23 21:58:44 +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
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
a6b1634eb2 Give ccd a cloning function. 2000-08-29 16:29:02 +00:00
Kirk McKusick
e6796b67d9 Move the truncation code out of vn_open and into the open system call
after the acquisition of any advisory locks. This fix corrects a case
in which a process tries to open a file with a non-blocking exclusive
lock. Even if it fails to get the lock it would still truncate the
file even though its open failed. With this change, the truncation
is done only after the lock is successfully acquired.

Obtained from:	 BSD/OS
2000-07-04 03:34:11 +00:00
Poul-Henning Kamp
9626b608de Separate the struct bio related stuff out of <sys/buf.h> into
<sys/bio.h>.

<sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall
not be made a nested include according to bdes teachings on the
subject of nested includes.

Diskdrivers and similar stuff below specfs::strategy() should no
longer need to include <sys/buf.> unless they need caching of data.

Still a few bogus uses of struct buf to track down.

Repocopy by:    peter
2000-05-05 09:59:14 +00:00
Poul-Henning Kamp
9d7f73695d Convert to struct bio instead of struct buf. 2000-05-01 13:36:43 +00:00
Poul-Henning Kamp
2c9b67a8df Remove unneeded #include <vm/vm_zone.h>
Generated by:	src/tools/tools/kerninclude
2000-04-30 18:52:11 +00:00
Poul-Henning Kamp
8177437d85 Complete the bio/buf divorce for all code below devfs::strategy
Exceptions:
        Vinum untouched.  This means that it cannot be compiled.
        Greg Lehey is on the case.

        CCD not converted yet, casts to struct buf (still safe)

        atapi-cd casts to struct buf to examine B_PHYS
2000-04-15 05:54:02 +00:00
Poul-Henning Kamp
c244d2de43 Move B_ERROR flag to b_ioflags and call it BIO_ERROR.
(Much of this done by script)

Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED.

Move b_pblkno and b_iodone_chain to struct bio while we transition, they
will be obsoleted once bio structs chain/stack.

Add bio_queue field for struct bio aware disksort.

Address a lot of stylistic issues brought up by bde.
2000-04-02 15:24:56 +00:00
Poul-Henning Kamp
b99c307a21 Rename the existing BUF_STRATEGY() to DEV_STRATEGY()
substitute BUF_WRITE(foo) for VOP_BWRITE(foo->b_vp, foo)

substitute BUF_STRATEGY(foo) for VOP_STRATEGY(foo->b_vp, foo)

This patch is machine generated except for the ccd.c and buf.h parts.
2000-03-20 11:29:10 +00:00
Poul-Henning Kamp
21144e3bf1 Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new
field in struct buf: b_iocmd.  The b_iocmd is enforced to have
exactly one bit set.

B_WRITE was bogusly defined as zero giving rise to obvious coding
mistakes.

Also eliminate the redundant struct buf flag B_CALL, it can just
as efficiently be done by comparing b_iodone to NULL.

Should you get a panic or drop into the debugger, complaining about
"b_iocmd", don't continue.  It is likely to write on your disk
where it should have been reading.

This change is a step in the direction towards a stackable BIO capability.

A lot of this patch were machine generated (Thanks to style(9) compliance!)

Vinum users:  Greg has not had time to test this yet, be careful.
2000-03-20 10:44:49 +00:00
Peter Wemm
0b5436a74a Remove #if NCCD > 0 - it's guaranteed to be true by config if ccd.c is
being compiled. (NCCD is used elsewhere though :-( )
2000-01-29 14:29:56 +00:00
Poul-Henning Kamp
af8862e4e6 Cleanup some remaining bdev fluff. 2000-01-16 09:25:10 +00:00
Poul-Henning Kamp
ba4ad1fcea Give vn_isdisk() a second argument where it can return a suitable errno.
Suggested by:	bde
2000-01-10 12:04:27 +00:00
Eivind Eklund
2046577307 Remove unused variable 1999-12-21 08:20:36 +00:00
Eivind Eklund
762e6b856c Introduce NDFREE (and remove VOP_ABORTOP) 1999-12-15 23:02:35 +00:00
Kenneth D. Merry
86b2c8466d Revamp the devstat priority system. All disks now have the same priority.
The same goes for CD drivers and tape drivers.  In systems with mixed IDE
and SCSI, devices in the same priority class will be sorted in attach
order.

Also, the 'CCD' priority is now the 'ARRAY' priority, and a number of
drivers have been modified to use that priority.

This includes the necessary changes to all drivers, except the ATA drivers.
Soren will modify those separately.

This does not include and does not require any change in the devstat
version number, since no known userland applications use the priority
enumerations.

Reviewed by:	msmith, sos, phk, jlemon, mjacob, bde
1999-12-08 04:45:23 +00:00
Poul-Henning Kamp
38224dcd59 Convert various pieces of code to use vn_isdisk() rather than checking
for vp->v_type == VBLK.

In ccd: we don't need to call VOP_GETATTR to find the type of a vnode.

Reviewed by:    sos
1999-11-22 10:33:55 +00:00
Poul-Henning Kamp
d53dedee55 Remove the devsw magic from DEV_MODULE() 1999-11-07 10:01:17 +00:00
Nick Hibma
3e2c6ca3b9 Removal of sys/device.h
- Move intrhook stuff into kernel.h
- Remove all occurrences of #device <device.h>
- Add kernel.h were necessary (nowhere)
- delete device.h

This file contained the structures for cfdata (old style config) and is no
longer used. It was included by most drivers.

It confuses the remote debugger as the definition of 'struct device' in
device.h is found before the one in bus_private.h.
1999-10-05 21:19:41 +00:00
Greg Lehey
1441456f23 Correct typo in comment. putccdbuf() releases a buffer, it doesn't allocate one. 1999-09-27 01:51:42 +00:00
Matthew Dillon
74427f90f2 Buffer locking code failed to use BUF_KERNPROC and BUF_UNLOCK and
BUF_LOCKFREE a buffer prior to physically freeing it.  While these
    bugs did not cause a crash, they might in the future.

    Added eof handling for unlabeled partitions.

Submitted by:	Tor.Egge@fast.no
1999-09-27 00:12:36 +00:00
Poul-Henning Kamp
d6a0e38a1b Remove five now unused fields from struct cdevsw. They should never
have been there in the first place.  A GENERIC kernel shrinks almost 1k.

Add a slightly different safetybelt under nostop for tty drivers.

Add some missing FreeBSD tags
1999-09-25 18:24:47 +00:00
Matthew Dillon
1464240ec4 Cleanup CCD quite a bit, including adding clarifying comments.
Enhance MIRROR code.  Add a few more sanity checks and implement
    a zone-based disk selector to make use of both disks when reading.

    Also implement a read fail-over.  If a read error occurs on one
    disk, the I/O is retried on the other.

    NOTE: CCD's mirroring support cannot deal with write errors properly
    in regards to recovery, meaning that 'old' data under a write error may
    be read non-deterministically if you reboot after a write error, and CCD
    certainly cannot deal with a disk changeout.  And it still can't.  Use
    vinum if you are really serious about mirroring.  CCD basically just
    implements a poor-man's mirror.
1999-09-23 09:25:05 +00:00
Matthew Dillon
25d1a00bc0 Fix ccdiodone code. The code was using cbp->cb_buf.b_bcount to
sum the total amount of I/O issued to determine when all the I/O
    has completed.  This fails when the EOF boundry occurs in the middle
    of an I/O.  Using cbp->cb_buf.b_bufsize works better.
1999-09-23 08:41:48 +00:00
Matthew Dillon
e322ec4cb4 Fix bug in pseudo-geometry calculation code that assumed a sector size
smaller then 1024 bytes.
1999-09-23 00:09:08 +00:00
Poul-Henning Kamp
2186cd9e8d Use devstat_end_transaction_buf() rather than Use devstat_end_transaction() 1999-09-18 21:30:27 +00:00
Julian Elischer
85a219d201 Changes to centralise the default blocksize behaviour.
More likely to follow.

Submitted by: phk@freebsd.org
1999-09-09 19:08:44 +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
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
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Poul-Henning Kamp
9c93810d2d Initialize the dev->si_bsize fields.
Submitted by:	tegge
Reviewed by:	phk
1999-08-26 14:46:10 +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
684adedee4 Use the vn_todev() function, rather than VOP_GETATTR 1999-07-18 14:31:01 +00:00
Poul-Henning Kamp
59c4226d5f Fix 2nd arg to udev2dev() call in ccd.c 1999-07-17 19:58:37 +00:00
Peter Wemm
b52ab6b545 Initialize and hold locks for ccd generated bufs..
Obtained from: Matt Dillon <dillon@backplane.com>
1999-06-27 09:28:43 +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
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