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Commit Graph

222 Commits

Author SHA1 Message Date
Kirk McKusick
0d2af52141 Introduce the new 64-bit size disk block, daddr64_t. Change
the bio and buffer structures to have daddr64_t bio_pblkno,
b_blkno, and b_lblkno fields which allows access to disks
larger than a Terabyte in size. This change also requires
that the VOP_BMAP vnode operation accept and return daddr64_t
blocks. This delta should not affect system operation in
any way. It merely sets up the necessary interfaces to allow
the development of disk drivers that work with these larger
disk block addresses. It also allows for the development of
UFS2 which will use 64-bit block addresses.
2002-03-15 18:49:47 +00:00
John Baldwin
a854ed9893 Simple p_ucred -> td_ucred changes to start using the per-thread ucred
reference.
2002-02-27 18:32:23 +00:00
Matthew Dillon
23b590188f Fix a BUF_TIMELOCK race against BUF_LOCK and fix a deadlock in vget()
against VM_WAIT in the pageout code.  Both fixes involve adjusting
the lockmgr's timeout capability so locks obtained with timeouts do not
interfere with locks obtained without a timeout.

Hopefully MFC: before the 4.5 release
2001-12-20 22:42:27 +00:00
John Baldwin
88736e1d37 Fix indentation after removing GEMDOS support. Whitespace changes only. 2001-11-28 18:29:16 +00:00
John Baldwin
5a7f3ebb94 Use suser_td() instead of explicitly checking cr_uid against 0.
PR:		kern/21809
Submitted by:	<mbendiks@eunet.no>
Reviewed by:	rwatson
2001-11-28 18:25:39 +00:00
John Baldwin
d3990d589f Axe more unused GEMDOS code that was #ifdef atari.
PR:		kern/21809
Submitted by:	<mbendiks@eunet.no>
2001-11-28 16:56:42 +00:00
John Baldwin
64bf8541f0 Remove GEMDOS support from msdosfs. I don't think anyone is going to
port FreeBSD to Atari machines any time soon.
2001-11-27 21:00:15 +00:00
Matthew Dillon
6b8bd2efc1 Add mnt_reservedvnlist so we can MFC to 4.x, in order to make all mount
structure changes now rather then piecemeal later on.  mnt_nvnodelist
currently holds all the vnodes under the mount point.  This will eventually
be split into a 'dirty' and 'clean' list.  This way we only break kld's once
rather then twice.  nvnodelist will eventually turn into the dirty list
and should remain compatible with the klds.
2001-11-04 18:55:42 +00:00
Matthew Dillon
c72ccd014d Change the vnode list under the mount point from a LIST to a TAILQ
in preparation for an implementation of limiting code for kern.maxvnodes.

MFC after:	3 days
2001-10-23 01:21:29 +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
Assar Westerlund
ac01ecd9fb remove support for creating files and directories from msdosfs_mknod 2001-07-19 19:15:42 +00:00
John Baldwin
797c3dba25 Fix a mntvnode and vnode interlock reversal. 2001-06-28 03:52:04 +00:00
Ruslan Ermilov
4ccd754686 - VFS_SET(msdos) -> VFS_SET(msdosfs)
- msdos.ko -> msdosfs.ko
- mount_msdos(8) -> mount_msdosfs(8)
- "msdos" -> "msdosfs" compatibility glue in mount(8)
2001-06-01 10:57:26 +00:00
Ruslan Ermilov
1166fb516b - sys/msdosfs moved to sys/fs/msdosfs
- msdos.ko renamed to msdosfs.ko
- /usr/include/msdosfs moved to /usr/include/fs/msdosfs
2001-05-25 08:14:14 +00:00
Ian Dowse
0864ef1e8a Change the second argument of vflush() to an integer that specifies
the number of references on the filesystem root vnode to be both
expected and released. Many filesystems hold an extra reference on
the filesystem root vnode, which must be accounted for when
determining if the filesystem is busy and then released if it isn't
busy. The old `skipvp' approach required individual filesystem
xxx_unmount functions to re-implement much of vflush()'s logic to
deal with the root vnode.

All 9 filesystems that hold an extra reference on the root vnode
got the logic wrong in the case of forced unmounts, so `umount -f'
would always fail if there were any extra root vnode references.
Fix this issue centrally in vflush(), now that we can.

This commit also fixes a vnode reference leak in devfs, which could
result in idle devfs filesystems that refuse to unmount.

Reviewed by:	phk, bp
2001-05-16 18:04:37 +00:00
Poul-Henning Kamp
a62615e59b Implement vop_std{get|put}pages() and add them to the default vop[].
Un-copy&paste all the VOP_{GET|PUT}PAGES() functions which do nothing but
the default.
2001-05-01 08:34:45 +00:00
Greg Lehey
60fb0ce365 Revert consequences of changes to mount.h, part 2.
Requested by:	bde
2001-04-29 02:45:39 +00:00
Poul-Henning Kamp
a13234bb35 Move the netexport structure from the fs-specific mountstructure
to struct mount.

This makes the "struct netexport *" paramter to the vfs_export
and vfs_checkexport interface unneeded.

Consequently that all non-stacking filesystems can use
vfs_stdcheckexp().

At the same time, make it a pointer to a struct netexport
in struct mount, so that we can remove the bogus AF_MAX
and #include <net/radix.h> from <sys/mount.h>
2001-04-25 07:07:52 +00:00
Greg Lehey
d98dc34f52 Correct #includes to work with fixed sys/mount.h. 2001-04-23 09:05:15 +00:00
John Baldwin
19eb87d22a Grab the process lock while calling psignal and before calling psignal. 2001-03-07 03:37:06 +00:00
Adrian Chadd
f3a90da995 Reviewed by: jlemon
An initial tidyup of the mount() syscall and VFS mount code.

This code replaces the earlier work done by jlemon in an attempt to
make linux_mount() work.

* the guts of the mount work has been moved into vfs_mount().

* move `type', `path' and `flags' from being userland variables into being
  kernel variables in vfs_mount(). `data' remains a pointer into
  userspace.

* Attempt to verify the `type' and `path' strings passed to vfs_mount()
  aren't too long.

* rework mount() and linux_mount() to take the userland parameters
  (besides data, as mentioned) and pass kernel variables to vfs_mount().
  (linux_mount() already did this, I've just tidied it up a little more.)

* remove the copyin*() stuff for `path'. `data' still requires copyin*()
  since its a pointer into userland.

* set `mount->mnt_statf_mntonname' in vfs_mount() rather than in each
  filesystem.  This variable is generally initialised with `path', and
  each filesystem can override it if they want to.

* NOTE: f_mntonname is intiailised with "/" in the case of a root mount.
2001-03-01 21:00:17 +00:00
Bosko Milekic
9ed346bab0 Change and clean the mutex lock interface.
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00
Jeroen Ruigrok van der Werven
1a6e52d0e9 Fix typo: seperate -> separate.
Seperate does not exist in the english language.
2001-02-06 11:21:58 +00:00
Poul-Henning Kamp
fc2ffbe604 Mechanical change to use <sys/queue.h> macro API instead of
fondling implementation details.

Created with: sed(1)
Reviewed by: md5(1)
2001-02-04 13:13:25 +00:00
Jason Evans
1b367556b5 Convert all simplelocks to mutexes and remove the simplelock implementations. 2001-01-24 12:35:55 +00:00
Poul-Henning Kamp
49851cc706 Use macro API to <sys/queue.h> 2000-12-31 10:24:19 +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
9f69a4578a Weaken a bogus dependency on <sys/proc.h> in <sys/buf.h> by #ifdef'ing
the offending inline function (BUF_KERNPROC) on it being #included
already.

I'm not sure BUF_KERNPROC() is even the right thing to do or in the
right place or implemented the right way (inline vs normal function).

Remove consequently unneeded #includes of <sys/proc.h>
2000-10-29 14:54:55 +00:00
Boris Popov
b1b494a765 Update stale comment.
PR:		kern/21805
2000-10-22 14:24:30 +00:00
Boris Popov
e7b1ac75dd Remove de_lock field from denode structure and make msdosfs PDIRUNLOCK aware. 2000-10-22 14:22:17 +00:00
Eivind Eklund
7eb9fca557 Blow away the v_specmountpoint define, replacing it with what it was
defined as (rdev->si_mountpoint)
2000-10-09 17:31:39 +00:00
Jason Evans
a18b1f1d4d Convert lockmgr locks from using simple locks to using mutexes.
Add lockdestroy() and appropriate invocations, which corresponds to
lockinit() and must be called to clean up after a lockmgr lock is no
longer needed.
2000-10-04 01:29:17 +00:00
Robert Watson
012c643d3e o Restructure vaccess() so as to check for DAC permission to modify the
object before falling back on privilege.  Make vaccess() accept an
  additional optional argument, privused, to determine whether
  privilege was required for vaccess() to return 0.  Add commented
  out capability checks for reference.  Rename some variables to make
  it more clear which modes/uids/etc are associated with the object,
  and which with the access mode.
o Update file system use of vaccess() to pass NULL as the optional
  privused argument.  Once additional patches are applied, suser()
  will no longer set ASU, so privused will permit passing of
  privilege information up the stack to the caller.

Reviewed by:	bde, green, phk, -security, others
Obtained from:	TrustedBSD Project
2000-08-29 14:45:49 +00:00
Bruce Evans
ff4ad0c4d8 Quick fix for msdsofs_write() on alphas and other machines with either
longs larger than 32 bits or strict alignment requirements.

pm_fatmask had type u_long, but it must have a type that has precisely
32 bits and this type must be no smaller than int, so that ~pmp->pm_fatmask
has no bits above the 31st set.  Otherwise, comparisons between (cn
| ~pmp->pm_fatmask) and magic 32-bit "cluster" numbers always fail.
The correct fix is to use the C99 type uint_least32_t and mask with
0xffffffff.  The quick fix is to use u_int32_t and assume that ints
have

msdosfs metadata is riddled with unaligned fields, and on alphas,
unaligned_fixup() apparently has problems fixing up the unaligned
accesses caused by this.  The quick fix is to not comment out the
NetBSD code that sort of handles this, and define UNALIGNED_ACCESS on
i386's so that the code doesn't change on i386's.  The correct fix
would define UNALIGNED_ACCESS in a central machine-dependent header
and maybe add some extra cases to unaligned_fixup().  UNALIGNED_ACCESS
is also tested in isofs.

Submitted by:	parts by Mark Abene <phiber@radicalmedia.com>
PR:		19086
2000-08-25 09:03:58 +00:00
Poul-Henning Kamp
e39c53eda5 Centralize the canonical vop_access user/group/other check in vaccess().
Discussed with: bde
2000-08-20 08:36:26 +00:00
David Malone
4ebb509c1f Certain error contitions cause msdosfs_rename() to decrement the
vnode reference count on 'fdvp' more times than it should.

PR:		17347
Submitted by:	Ian Dowse <iedowse@maths.tcd.ie>
Approved by:	bde
2000-07-14 11:52:56 +00:00
Boris Popov
432a84000f Fix memory leakage on module unload.
Spotted by:	fixed INVARIANTS code
2000-06-29 01:12:47 +00:00
Boris Popov
b1bd38b351 Remove obsolete comment.
Submitted by:	Marius Bendiksen <mbendiks@eunet.no>
2000-06-25 02:29:45 +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
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
Matthew Dillon
7c58e473f5 Commit the buffer cache cleanup patch to 4.x and 5.x. This patch fixes a
fragmentation problem due to geteblk() reserving too much space for the
    buffer and imposes a larger granularity (16K) on KVA reservations for
    the buffer cache to avoid fragmentation issues.  The buffer cache size
    calculations have been redone to simplify them (fewer defines, better
    comments, less chance of running out of KVA).

    The geteblk() fix solves a performance problem that DG was able reproduce.

    This patch does not completely fix the KVA fragmentation problems, but
    it goes a long way

Mostly Reviewed by: bde and others
Approved by: jkh
2000-03-27 21:29:33 +00:00
Yoshihiro Takahashi
01f6cfbae0 Supported non-512 bytes/sector format.
PR:		misc/12992
Submitted by:	chi@bd.mbn.or.jp (Chiharu Shibata) and
		Dmitrij Tejblum <tejblum@arc.hq.cti.ru>
Reviewed by:	Dmitrij Tejblum <tejblum@arc.hq.cti.ru>
2000-01-27 14:43:07 +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
Boris Popov
37713edc2d Treat negative uio_offset value as eof (idea by: bde).
Prevent overflows by casting uio_offset to uoff_t.
Return correct error number if directory entry is broken.

Reviewed by:	bde
2000-01-08 10:45:54 +00:00
Boris Popov
70852092e8 Fix the mess with signed/unsigned longs and ints (inspired by bde).
Fix potential bug with directory reading.
Explicitly limit file size to 4GB (msdos can't handle larger files).
Slightly reorganize msdosfs_read() to reduce number of 'if's.
2000-01-02 03:30:42 +00:00
Peter Wemm
c447342094 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 05:07:58 +00:00
Boris Popov
687fce0361 Avoid to write garbage if uiomove fails. 1999-12-28 16:14:54 +00:00
Boris Popov
dc22f85f34 Fix an overflow in the msdosfs_read() function which exposed on the files
with size > 2GB.

PR:		15639
Submitted by:	Tim Kientzle <kientzle@acm.org>
Reviewed by:	phk
1999-12-28 15:34:23 +00:00