Commit Graph

1932 Commits

Author SHA1 Message Date
Tom Rhodes
09c00166e4 Make tv_sec a time_t on all platforms but alpha. Brings us more in line with
POSIX.  This also makes the struct correct we ever implement an i386-time64
architecture.  Not that we need too.

Reviewed by:	imp, brooks
Approved by:	njl (acpica), des (no objects, touches procfs)
Tested with:	make universe
2005-12-24 22:22:17 +00:00
Dag-Erling Smørgrav
0430a5e289 Eradicate caddr_t from the VFS API. 2005-12-14 00:49:52 +00:00
Tai-hwa Liang
8bfc230455 Recent nmount(2) adoption in mount_smbfs(8) did not flag the "long" option
since mount_smbfs(8) assumed long name mounting by default unless "-n long"
was explicitly specified.

Rather than supplying a "long" option in mount_smbfs(8), this commit brings
back the original behaviour by associating SMBFS_MOUNT_NO_LONG with the
"nolong" option.  This should fix the broken long file names on smbfs people
observed recently.

Reported by:	Vladimir Grebenschikov <vova at fbsd dot ru>
Reviewed by:	phk
Tested by:	Slawa Olhovchenkov <slw at zxy dot spb dot ru>
2005-12-05 19:05:06 +00:00
Ruslan Ermilov
342ed5d948 Fix -Wundef warnings found when compiling i386 LINT, GENERIC and
custom kernels.
2005-12-05 11:58:35 +00:00
Ruslan Ermilov
3238c6bd33 Fix -Wundef from compiling the amd64 LINT. 2005-12-04 10:06:06 +00:00
Ruslan Ermilov
f4e9888107 Fix -Wundef. 2005-12-04 02:12:43 +00:00
Boris Popov
cc518d3b67 Fix interaction with Windows 2000/XP based servers:
If the complete reply on the TRANS2_FIND_FIRST2 request fits exactly
into one responce packet, then next call to TRANS2_FIND_NEXT2 will return
zero entries and server will close current transaction.  To avoid
subsequent errors we should not perform FIND_CLOSE2 request.

PR:		kern/78953
Submitted by:	Jim Carroll
2005-11-22 07:13:00 +00:00
Craig Rodrigues
d75b2048db Properly parse the nowin95 mount option.
Tested by:	Rainer Hurling <rhurlin at gwdg dot de>
2005-11-19 16:38:39 +00:00
Craig Rodrigues
4ab125739b Add "shortnames" and "longnames" mount options which are
synonyms for "shortname" and "longname" mount options.  The old
(before nmount()) mount_msdosfs program accepted "shortnames" and "longnames",
but the kernel nmount() checked for "shortname" and "longname".
So, make the kernel accept "shortnames", "longnames", "shortname", "longname"
for forwards and backwarsd compatibility.

Discovered by:	Rainer Hurling <rhurlin at gwdg dot de>
2005-11-18 22:34:31 +00:00
Craig Rodrigues
43fa5bf534 - Add errmsg to the list of smbfs mount options.
- Use vfs_mount_error() to propagate smbfs mount errors back to userspace.

Reviewed by:	bp (smbfs maintainer)
2005-11-16 02:26:25 +00:00
Doug White
16e35dcc39 This is a workaround for a complicated issue involving VFS cookies and devfs.
The PR and patch have the details. The ultimate fix requires architectural
changes and clarifications to the VFS API, but this will prevent the system
from panicking when someone does "ls /dev" while running in a shell under the
linuxulator.

This issue affects HEAD and RELENG_6 only.

PR:		88249
Submitted by:	"Devon H. O'Dell" <dodell@ixsystems.com>
MFC after:	3 days
2005-11-09 22:03:50 +00:00
Robert Watson
5bb84bc84b Normalize a significant number of kernel malloc type names:
- Prefer '_' to ' ', as it results in more easily parsed results in
  memory monitoring tools such as vmstat.

- Remove punctuation that is incompatible with using memory type names
  as file names, such as '/' characters.

- Disambiguate some collisions by adding subsystem prefixes to some
  memory types.

- Generally prefer lower case to upper case.

- If the same type is defined in multiple architecture directories,
  attempt to use the same name in additional cases.

Not all instances were caught in this change, so more work is required to
finish this conversion.  Similar changes are required for UMA zone names.
2005-10-31 15:41:29 +00:00
Poul-Henning Kamp
3b72f38b5e Use correct cirteria for determining which directory entries we can
purge right away and which we merely can hide.

Beaten into my skull by:	kris
2005-10-18 20:21:25 +00:00
Dag-Erling Smørgrav
a92fef8afc Implement the full range of ISO9660 number conversion routines in iso.h.
MFC after:	2 weeks
2005-10-18 13:35:08 +00:00
Craig Rodrigues
c583f369a7 Unconditionally mount a CD9660 filesystem as read-only, instead of
returning EROFS if we forget to mount it as read-only.
2005-10-17 03:29:53 +00:00
Craig Rodrigues
b137e1c8ba Use the actual sector size of the media instead of hard-coding it to 2048.
This eliminates KASSERTs in GEOM if we accidentally mount an audio CD
as a cd9660 filesystem.
2005-10-17 03:27:35 +00:00
Craig Rodrigues
073833a420 Unconditionally mount a UDF filesystem as read-only, instead of
returning an EROFS if we forget to mount it as read-only.
2005-10-17 03:07:36 +00:00
Florent Thoumie
86391603da - Fix typo.
Approved by:	ssouhlal
MFC after:	1 week
2005-10-17 00:04:35 +00:00
Don Lewis
8bcc0d3f95 Update nwfs_lookup() to match the current cache_lookup() API.
cache_lookup() has returned a ref'ed and locked vnode since
vfs_cache.c:1.96, dated Tue Mar 29 12:59:06 2005 UTC.  This change
is similar to the change made to smbfs_lookup() in smbfs_vnops.c:1.58.

Tested by:	"Antony Mawer" ant AT mawer.org
MFC after:	2 weeks
2005-10-16 21:54:35 +00:00
Kris Kennaway
3554cddbfa Reflect mpsafety of the underlying filesystem in the nullfs image.
I benchmarked this by simultaneously extracting 4 large tarballs (basically
world images) on a 4-processor AMD64 system, in a malloc-backed md.

With this patch, system time was reduced by 43%, and wall clock time by 33%.

Submitted by:	jeff
MFC after: 	1 week
2005-10-16 21:45:25 +00:00
Don Lewis
d31c91fbcf Apply the same fix to a potential race in the ISDOTDOT code in
cd9660_lookup() that was used to fix an actual race in ufs_lookup.c:1.78.
This is not currently a hazard, but the bug would be activated by
marking cd9660 as MPSAFE.

Requested by:	bde
2005-10-16 21:41:54 +00:00
Yaroslav Tykhiy
10d645b7e5 In preparation for making the modules actually use opt_*.h files
provided in the kernel build directory, fix modules that were
failing to build this way due to not quite correct kernel option
usage.  In particular:

ng_mppc.c uses two complementary options, both of which are listed
in sys/conf/files.  Ideally, there should be a separate option for
including ng_mppc.c in kernel build, but now only
NETGRAPH_MPPC_ENCRYPTION is usable anyway, the other one requires
proprietary files.

nwfs and smbfs were trying to ensure they were built with proper
network components, but the check was rather questionable.

Discussed with:	ru
2005-10-14 23:17:45 +00:00
David Xu
9104847f21 1. Change prototype of trapsignal and sendsig to use ksiginfo_t *, most
changes in MD code are trivial, before this change, trapsignal and
   sendsig use discrete parameters, now they uses member fields of
   ksiginfo_t structure. For sendsig, this change allows us to pass
   POSIX realtime signal value to user code.

2. Remove cpu_thread_siginfo, it is no longer needed because we now always
   generate ksiginfo_t data and feed it to libpthread.

3. Add p_sigqueue to proc structure to hold shared signals which were
   blocked by all threads in the proc.

4. Add td_sigqueue to thread structure to hold all signals delivered to
   thread.

5. i386 and amd64 now return POSIX standard si_code, other arches will
   be fixed.

6. In this sigqueue implementation, pending signal set is kept as before,
   an extra siginfo list holds additional siginfo_t data for signals.
   kernel code uses psignal() still behavior as before, it won't be failed
   even under memory pressure, only exception is when deleting a signal,
   we should call sigqueue_delete to remove signal from sigqueue but
   not SIGDELSET. Current there is no kernel code will deliver a signal
   with additional data, so kernel should be as stable as before,
   a ksiginfo can carry more information, for example, allow signal to
   be delivered but throw away siginfo data if memory is not enough.
   SIGKILL and SIGSTOP have fast path in sigqueue_add, because they can
   not be caught or masked.
   The sigqueue() syscall allows user code to queue a signal to target
   process, if resource is unavailable, EAGAIN will be returned as
   specification said.
   Just before thread exits, signal queue memory will be freed by
   sigqueue_flush.
   Current, all signals are allowed to be queued, not only realtime signals.

Earlier patch reviewed by: jhb, deischen
Tested on: i386, amd64
2005-10-14 12:43:47 +00:00
Craig Rodrigues
a3d7f575c0 - Do not hardcode the bsize to a sectorsize of 2048, even though
the UDF specification specifies a logical sectorsize of 2048.
  Instead, get it from GEOM.
- When reading the UDF Anchor Volume Descriptor, use the logical
  sectorsize of 2048 when calculating the offset to read from, but
  use the actual sectorsize to determine how much to read.

- works with reading a DVD disk and a DVD disk image file via mdconfig
- correctly returns EINVAL if we try to mount_udf an audio CD, instead
  of panicking inside GEOM when INVARIANTS is set
2005-10-09 04:45:33 +00:00
Pawel Jakub Dawidek
8597a1c5b2 We don't need 'imp' here. 2005-10-07 10:30:47 +00:00
Robert Watson
2affdbee3e Second attempt at a work-around for fifo-related socket panics during
make -j with high levels of parallelism: acquire Giant in fifo I/O
routines.

Discussed with:	ups
MFC after:	3 days
2005-10-01 20:15:41 +00:00
Poul-Henning Kamp
73a2c3a32e The NWFS code in RELENG_6 is broken due to a typo in
sys/fs/nwfs/nwfs_vfsop= s.c, introduced with the conversion to
nmount with revision 1.38. This causes mount_nwfs to fail with
the error message:

  mount_nwfs: mount error: /mnt/netware: syserr = No such file or directo=
ry

This is caused by a typo on line 178, which specifies "nwfw_args"
rather than "nwfs_args".

Submitted by:	Antony Mawer <gnats@mawer.org>
Fat fingers:	phk
PR:		86757
MFC:		3 days
2005-09-30 18:21:05 +00:00
Peter Edwards
20c5ba3685 Remove checks for BOOTSIG[23] from FAT32 bootblocks.
There seems to be very little documentary evidence outside this
implementation to suggest a these checks are neccessary, and more
than one camera-formatted flash disk fails the check, but mounts
successfully on most other systems.

Reviewed By: bde@
2005-09-29 14:09:46 +00:00
Robert Watson
a0e81bce69 Back out fifo_vnops.c:1.127, which introduced an sx lock around I/O on
a fifo.  While this did indeed close the race, confirming suspicions
about the nature of the problem, it causes difficulties with blocking
I/O on fifos.

Discussed with:		ups
Also spotted by:	Peter Holm <peter at holm dot cc>
2005-09-27 16:45:22 +00:00
Robert Watson
454c3d13be Assert v_fifoinfo is non-NULL in fifo_close() in order to catch
non-conforming cases sooner.

MFC after:	3 days
Reported by:	Peter Holm <peter at holm dot cc>
2005-09-26 08:17:03 +00:00
Robert Watson
ee47648770 Lock the read socket receive buffer when frobbing the sb_state flag on
that socket during open, not the write socket receive buffer.  This
might explain clearing of the sb_state SB_LOCK flag seen occasionally
in soreceive() on fifos.

MFC after:	3 days
Spotted by:	ups
2005-09-25 19:52:09 +00:00
Poul-Henning Kamp
e515ee7832 Make rule zero really magical, that way we don't have to do anything
when we mount and get zero cost if no rules are used in a mountpoint.

Add code to deref rules on unmount.

Switch from SLIST to TAILQ.

Drop SYSINIT, use SX_SYSINIT and static initializer of TAILQ instead.

Drop goto, a break will do.

Reduce double pointers to single pointers.

Combine reaping and destroying rulesets.

Avoid memory leaks in a some error cases.
2005-09-24 07:03:09 +00:00
Robert Watson
5d3df5cc1b For reasons of consistency (and necessity), assert an exclusive vnode
lock on the fifo vnode in fifo_open(): we rely on the vnode lock to
serialize access to v_fifoinfo.

MFC after:	3 days
2005-09-23 12:39:51 +00:00
Robert Watson
7028887eac Add fi_sx, an sx lock to serialize I/O operations on the socket pair
underlying the POSIX fifo implementation.  In 6.x/7.x, fifo access is
moved from the VFS layer, where it was serialized using the vnode
lock, to the file descriptor layer, where access is protected by a
reference count but not serialized.  This exposed socket buffer
locking to high levels of parallelism in specific fifo workloads, such
as make -j 32, which expose as yet unresolved socket buffer bugs.

fi_sx re-adds serialization about the read and write routines,
although not paths that simply test socket buffer mbuf queue state,
such as the poll and kqueue methods.  This restores the extra locking
cost previously present in some cases, but is an effective workaround
for the instability that has been experienced.  This workaround should
be removed once the bug in socket buffer handling has been fixed.

Reported by:	kris, jhb, Julien Gabel <jpeg at thilelli dot net>,
		Peter Holm <peter at holm dot cc>, others
MFC after:	3 days
2005-09-22 10:51:12 +00:00
Poul-Henning Kamp
e606a3c63e Rewamp DEVFS internals pretty severely [1].
Give DEVFS a proper inode called struct cdev_priv.  It is important
to keep in mind that this "inode" is shared between all DEVFS
mountpoints, therefore it is protected by the global device mutex.

Link the cdev_priv's into a list, protected by the global device
mutex.  Keep track of each cdev_priv's state with a flag bit and
of references from mountpoints with a dedicated usecount.

Reap the benefits of much improved kernel memory allocator and the
generally better defined device driver APIs to get rid of the tables
of pointers + serial numbers, their overflow tables,  the atomics
to muck about in them and all the trouble that resulted in.

This makes RAM the only limit on how many devices we can have.

The cdev_priv is actually a super struct containing the normal cdev
as the "public" part, and therefore allocation and freeing has moved
to devfs_devs.c from kern_conf.c.

The overall responsibility is (to be) split such that kern/kern_conf.c
is the stuff that deals with drivers and struct cdev and fs/devfs
handles filesystems and struct cdev_priv and their private liason
exposed only in devfs_int.h.

Move the inode number from cdev to cdev_priv and allocate inode
numbers properly with unr.  Local dirents in the mountpoints
(directories, symlinks) allocate inodes from the same pool to
guarantee against overlaps.

Various other fields are going to migrate from cdev to cdev_priv
in the future in order to hide them.  A few fields may migrate
from devfs_dirent to cdev_priv as well.

Protect the DEVFS mountpoint with an sx lock instead of lockmgr,
this lock also protects the directory tree of the mountpoint.

Give each mountpoint a unique integer index, allocated with unr.
Use it into an array of devfs_dirent pointers in each cdev_priv.
Initially the array points to a single element also inside cdev_priv,
but as more devfs instances are mounted, the array is extended with
malloc(9) as necessary when the filesystem populates its directory
tree.

Retire the cdev alias lists, the cdev_priv now know about all the
relevant devfs_dirents (and their vnodes) and devfs_revoke() will
pick them up from there.  We still spelunk into other mountpoints
and fondle their data without 100% good locking.  It may make better
sense to vector the revoke event into the tty code and there do a
destroy_dev/make_dev on the tty's devices, but that's for further
study.

Lots of shuffling of stuff and churn of bits for no good reason[2].

XXX: There is still nothing preventing the dev_clone EVENTHANDLER
from being invoked at the same time in two devfs mountpoints.  It
is not obvious what the best course of action is here.

XXX: comment out an if statement that lost its body, until I can
find out what should go there so it doesn't do damage in the meantime.

XXX: Leave in a few extra malloc types and KASSERTS to help track
down any remaining issues.

Much testing provided by:		Kris
Much confusion caused by (races in):	md(4)

[1] You are not supposed to understand anything past this point.

[2] This line should simplify life for the peanut gallery.
2005-09-19 19:56:48 +00:00
Robert Watson
526e258d3a Assert that (vp) is locked in fifo_close(), since we rely on the
exclusive vnode lock to synchronize the reference counts on struct
fifoinfo.

MFC after:	3 days
2005-09-18 10:44:50 +00:00
Poul-Henning Kamp
59307b0dfe Don't attempt to recurse lockmgr, it doesn't like it. 2005-09-15 21:16:43 +00:00
Alexander Kabaev
d11c07ba56 Handle a race condition where NULLFS vnode can be cleaned while threads
can still be asleep waiting for lowervp lock.

Tested by:	kkenn
Discussed with: ssouhlal, jeffr
2005-09-15 19:21:26 +00:00
Robert Watson
ca17bccaa1 The socket pointers in fifoinfo are not permitted to be NULL, so
don't check if they are, it just confuses the fifo code more.

MFC after:	3 days
2005-09-15 15:45:34 +00:00
Poul-Henning Kamp
214c8ff0e4 Various minor polishing. 2005-09-15 10:28:19 +00:00
Poul-Henning Kamp
6556102dcb Protect the devfs rule internal global lists with a sx lock, the per
mount locks are not enough.  Finer granularity (x)locking could be
implemented, but I prefer to keep it simple for now.
2005-09-15 08:50:16 +00:00
Poul-Henning Kamp
ab32e95296 Absolve devfs_rule.c from locking responsibility and call it with
all necessary locking held.
2005-09-15 08:36:37 +00:00
Poul-Henning Kamp
5e080af41f Close a race which could result in unwarranted "ruleset %d already
running" panics.

Previously, recursion through the "include" feature was prevented by
marking each ruleset as "running" when applied.  This doesn't work for
the case where two DEVFS instances try to apply the same ruleset at
the same time.

Instead introduce the sysctl vfs.devfs.rule_depth (default == 1) which
limits how many levels of "include" we will traverse.

Be aware that traversal of "include" is recursive and kernel stack
size is limited.

MFC:	after 3 days
2005-09-15 06:57:28 +00:00
Robert Watson
447bbaa2cf Trim down now (believed to be) unused fifo_ioctl() and
fifo_kqfilter() VOP implementations, since they in theory are used
only on open file descriptors, in which case the ioctls are via
fifo_ioctl_f() and kqueue requests are via fifo_kqfilter_f().
Generate warnings if they are entered for now.  These printf()
calls should become panic() calls.

Annotate and re-implement fifo_ioctl_f(): don't arbitrarily
forward ioctls to the socket layer, only forward the ones we
explicitly support for fifos.  In the case of FIONREAD, don't
forward the request to the write socket on a read-write fifo, or
the read result is overwritten.  Annotate a nasty case for the
undefined POSIX O_RDWR on fifos, in which failure of the second
ioctl will result in the socket pair being in an inconsistent
state.

Assert copyright as I find myself rewriting non-trivial parts of
fifofs.

MFC after:	3 days
2005-09-13 17:46:48 +00:00
Robert Watson
8a22e151be As a result of kqueue locking work, socket buffer locks will always
be held when entering a kqueue filter for fifos via a socket buffer
event: as such, assert the lock unconditionally rather than acquiring
it conditionall.

MFC after:	3 days
2005-09-13 10:39:24 +00:00
Robert Watson
db7a6c2f43 Annotate two issues:
1) fifo_kqfilter() is not actually ever used, it likely should be GC'd.

2) fifo_kqfilter_f() doesn't implement EVFILT_VNODE, so detecting events
   on the underlying vnode for a fifo no longer works (it did in 4.x).
   Likely, fifo_kqfilter_f() should forward the request to the VFS using
   fp->f_vnode, which would work once fifo_kqfilter() was detached from
   the vnode operation vector (removing the fifo override).

Discussed with:	phk
2005-09-13 09:23:22 +00:00
Robert Watson
88f39e8e95 Introduce no-op nosup fifo kqueue filter and detach routine, which are
used when a read filter is requested on a write-only fifo descriptor, or
a write filter is requested on a read-only fifo descriptor.  This
permits the filters to be registered, but never raises the event, which
causes kqueue behavior for fifos to more closely match similar semantics
for poll and select, which permit testing for the condition even though
the condition will never be raised, and is consistent with POSIX's notion
that a fifo has identical semantics to a one-way IPC channel created
using pipe() on most operating systems.

The fifo regression test suite can now run to completion on HEAD without
errors.

MFC after:	3 days
2005-09-12 19:59:12 +00:00
Robert Watson
48afebb83d When a request is made to register a filter on a fifo that doesn't
apply to the fifo (i.e., not EVFILT_READ or EVFILT_WRITE), reject
it as EINVAL, not by returning 1 (EPERM).

MFC after:	3 days
2005-09-12 18:07:49 +00:00
Robert Watson
114538d85b Remove DFLAG_SEEKABLE from fifo file descriptors: fifos are not seekable
according to POSIX, not to mention the fact that it doesn't make sense
(and hence isn't really implemented).  This causes the fifo_misc
regression test to succeed.
2005-09-12 12:15:12 +00:00
Robert Watson
6dd84b0bdc Only poll the fifo for read events if the fifo is attached to a readable
file descriptor.  Otherwise, the read end of a fifo might return that it
is writable (which it isn't).

Only poll the fifo for write events if the fifo attached to a writable
file descriptor.  Otherwise, the write end of a fifo might return that
it is readable (which it isn't).

In the event that a file is FREAD|FWRITE (which is allowed by POSIX, but
has undefined behavior), we poll for both.

MFC after:	3 days
2005-09-12 10:16:18 +00:00
Robert Watson
845e8e827b After going to some trouble to identify only the write-related events
to poll the write socket for, the fifo polling code proceeded to poll
for the complete set of events.  Use 'levents' instead of 'events' as
the argument to poll, and only poll the write socket if there is
interest in write events.

MFC after:	3 days
2005-09-12 10:13:15 +00:00
Robert Watson
ab5182012a When a writer opens a fifo, wake up the read socket for read, not the
write socket.

MFC after:	3 days
2005-09-12 10:07:21 +00:00
Robert Watson
a1b9943657 Add an assertion that fifo_open() doesn't race against other threads
while sleeping to allocate fifo state: due to using the vnode lock to
serialize access to a fifo during open, it shouldn't happen (tm).

MFC after:	3 days
2005-09-12 10:06:38 +00:00
Robert Watson
ba9eeb43fe Rather than reaching into the internals of the UNIX domain socket code
by calling uipc_connect2() to connect two socket endpoints to create a
fifo, call soconnect2().

MFC after:	3 days
2005-09-12 10:05:08 +00:00
Poul-Henning Kamp
21806f30bc Clean up prototypes. 2005-09-12 08:03:15 +00:00
Craig Rodrigues
b575132598 Cast bf_sysid to const char * when passing it to strncmp(), because
strncmp does not take an unsigned char *.  Eliminates warning with GCC 4.0.
2005-09-11 16:02:14 +00:00
Craig Rodrigues
2a3e0acc5d Do not declare M_NTFSMNT with extern linkage here, since
it is defined with static linkage in ntfs_vfsops.c.
Fixes compilation with GCC 4.0.
2005-09-11 15:57:07 +00:00
David E. O'Brien
5ddf29857e Ensure the full value is written into inode variables.
PR:		85503
Submitted by:	Dmitry Pryanishnikov <dmitry@atlantis.dp.ua>
2005-09-07 10:32:58 +00:00
Suleiman Souhlal
68da388325 Unbreak hpfs/ntfs/udf/ext2fs/reiserfs mounting.
Another pointyhat to:	ssouhlal
2005-09-03 20:23:41 +00:00
Suleiman Souhlal
44bd2bc19a Unbreak the build.
Pointyhat to:	ssouhlal
2005-09-03 00:40:19 +00:00
Suleiman Souhlal
cdeb72045b Use vput() instead of vrele() in null_reclaim() since the lower vnode
is locked.

MFC after:	3 days
2005-09-02 15:49:55 +00:00
Suleiman Souhlal
75d7ba93af *_mountfs() (if the filesystem mounts from a device) needs devvp to be
locked, so lock it.

Glanced at by:	phk
MFC after:	3 days
2005-09-02 15:27:23 +00:00
Poul-Henning Kamp
80447bf701 Add a missing dev_relthread() call.
Remove unused variable.

Spotted by:	Hans Petter Selasky <hselasky@c2i.net>
2005-08-29 11:14:18 +00:00
Poul-Henning Kamp
516ad423b1 Handle device drivers with D_NEEDGIANT in a way which does not
penalize the 'good' drivers:  Allocate a shadow cdevsw and populate
it with wrapper functions which grab Giant
2005-08-17 08:19:52 +00:00
Poul-Henning Kamp
31cc57cdbd Collect the devfs related sysctls in one place 2005-08-16 19:25:02 +00:00
Poul-Henning Kamp
9c0af1310c Create a new internal .h file to communicate very private stuff
from kern_conf.c to devfs.

For now just two prototypes, more to come.
2005-08-16 19:08:01 +00:00
Poul-Henning Kamp
d785dfefa4 Eliminate effectively unused dm_basedir field from devfs_mount. 2005-08-15 19:40:53 +00:00
Peter Grehan
14dcd40fde - restore the ability to mount cd9660 filesystems as root by inverting
some of the options test, specifically the joliet and rockridge tests.
  Since the root mount callchain doesn't go through cd9660_cmount, the
  default mount options aren't set. Rather than having the main codepath
  assume the options are there, test for the absence of the inverted
  optioin

  e.g. instead of vfs_flagopt(.. "joliet" ..), test for
  !vfs_flagopt(.. "nojoliet" ..)

  This works for root mount, non-root mount and future nmount cases.

- in cd9660_cmount, remove inadvertent setting of "gens" when "extatt"
  was set.

Reported by:	grehan, Dario Freni <saturnero at freesbie org>
Tested by:	Dario Freni
Not objected to by:	phk

MFC after:	3 days
2005-08-14 04:19:36 +00:00
Dag-Erling Smørgrav
8ab2a64d2f Eliminate an unnecessary bcopy(). 2005-08-12 12:22:05 +00:00
David E. O'Brien
c11ba30c9a Remove public declarations of variables that were forgotten when they were
made static.
2005-08-10 07:10:02 +00:00
David E. O'Brien
cec9a4bf57 Remove the need to forward declare statics by moving them around. 2005-08-10 07:08:14 +00:00
Robert Watson
6a113b3de7 Merge the dev_clone and dev_clone_cred event handlers into a single
event handler, dev_clone, which accepts a credential argument.
Implementors of the event can ignore it if they're not interested,
and most do.  This avoids having multiple event handler types and
fall-back/precedence logic in devfs.

This changes the kernel API for /dev cloning, and may affect third
party packages containg cloning kernel modules.

Requested by:	phk
MFC after:	3 days
2005-08-08 19:55:32 +00:00
Kris Kennaway
e29c976a58 devfs is not yet fully MPSAFE - for example, multiple concurrent devfs(8)
processes can cause a panic when operating on rulesets.

Approved by:	phk
2005-07-29 23:00:56 +00:00
Simon L. B. Nielsen
02a4be3f74 Correct devfs ruleset bypass.
Submitted by:	csjp
Reviewed by:	phk
Security:	FreeBSD-SA-05:17.devfs
Approved by:	cperciva
2005-07-20 13:34:16 +00:00
R. Imura
697ab829fc [1] unix2doschr()
If a character cannot be converted to DOS code page,
 unix2doschr() returned `0'. As a result, unix2dosfn()
 was forced to return `0', so we saw a file which was
 composed of these characters as `Invalid argument'.
 To correct this, if a character can be converted to
 Unicode, unix2doschr() now returns `1' which is a magic
 number to make unix2dosfn() know that the character
 must be converted to `_'.

[2] unix2dosfn()
 The above-mentioned solution only works if a file
 has both of Unicode name and DOS code page name.
 Unicode name would not be recorded if file name
 can be settled within 11 bytes (DOS short name)
 and if no conversion from Unix charset to DOS code
 page has occurred. Thus, FreeBSD can create a file
 which has only short name, but there is no guarantee
 that the short name contains allways valid characters
 because we leave it to people by using mount_msdosfs(8)
 to select which conversion is used between DOS code
 page and unix charset.
 To avoid this, Unicode file name should be recorded
 unless a character is an ascii character. This is
 the way Windows XP do.

PR:		77074 [1]
MFC after:	1 week
2005-07-17 07:10:05 +00:00
Robert Watson
d26dd2d99e When devfs cloning takes place, provide access to the credential of the
process that caused the clone event to take place for the device driver
creating the device.  This allows cloned device drivers to adapt the
device node based on security aspects of the process, such as the uid,
gid, and MAC label.

- Add a cred reference to struct cdev, so that when a device node is
  instantiated as a vnode, the cloning credential can be exposed to
  MAC.

- Add make_dev_cred(), a version of make_dev() that additionally
  accepts the credential to stick in the struct cdev.  Implement it and
  make_dev() in terms of a back-end make_dev_credv().

- Add a new event handler, dev_clone_cred, which can be registered to
  receive the credential instead of dev_clone, if desired.

- Modify the MAC entry point mac_create_devfs_device() to accept an
  optional credential pointer (may be NULL), so that MAC policies can
  inspect and act on the label or other elements of the credential
  when initializing the skeleton device protections.

- Modify tty_pty.c to register clone_dev_cred and invoke make_dev_cred(),
  so that the pty clone credential is exposed to the MAC Framework.

While currently primarily focussed on MAC policies, this change is also
a prerequisite for changes to allow ptys to be instantiated with the UID
of the process looking up the pty.  This requires further changes to the
pty driver -- in particular, to immediately recycle pty nodes on last
close so that the credential-related state can be recreated on next
lookup.

Submitted by:	Andrew Reisse <andrew.reisse@sparta.com>
Obtained from:	TrustedBSD Project
Sponsored by:	SPAWAR, SPARTA
MFC after:	1 week
MFC note:	Merge to 6.x, but not 5.x for ABI reasons
2005-07-14 10:22:09 +00:00
Seigo Tanimura
045f25a28d Regrab dvp only when ISDOTDOT.
Approved by:	re (scottl)
2005-07-09 13:52:49 +00:00
Jeff Roberson
8b3676f1a1 - Since we don't hold a usecount in pfs_exit we have to get a holdcnt
prior to calling vgone() to prevent any races.

Sponsored by:	Isilon Systems, Inc.
Approved by:	re (vfs blanket)
2005-07-07 07:33:10 +00:00
Peter Wemm
62919d788b Jumbo-commit to enhance 32 bit application support on 64 bit kernels.
This is good enough to be able to run a RELENG_4 gdb binary against
a RELENG_4 application, along with various other tools (eg: 4.x gcore).
We use this at work.

ia32_reg.[ch]: handle the 32 bit register file format, used by ptrace,
	procfs and core dumps.
procfs_*regs.c: vary the format of proc/XXX/*regs depending on the client
	and target application.
procfs_map.c: Don't print a 64 bit value to 32 bit consumers, or their
	sscanf fails.  They expect an unsigned long.
imgact_elf.c: produce a valid 32 bit coredump for 32 bit apps.
sys_process.c: handle 32 bit consumers debugging 32 bit targets.  Note
	that 64 bit consumers can still debug 32 bit targets.

IA64 has got stubs for ia32_reg.c.

Known limitations: a 5.x/6.x gdb uses get/setcontext(), which isn't
implemented in the 32/64 wrapper yet.  We also make a tiny patch to
gdb pacify it over conflicting formats of ld-elf.so.1.

Approved by:	re
2005-06-30 07:49:22 +00:00
Peter Wemm
2de92a386e Conditionally weaken sys_generic.c rev 1.136 to allow certain dubious
ioctl numbers in backwards compatability mode.  eg: an IOC_IN ioctl with
a size of zero.  Traditionally this was what you did before IOC_VOID
existed, and we had some established users of this in the tree, namely
procfs.  Certain 3rd party drivers with binary userland components also
have this too.

This is necessary to have 4.x and 5.x binaries use these ioctl's.  We
found this at work when trying to run 4.x binaries.

Approved by:	re
2005-06-30 00:19:08 +00:00
R. Imura
181fc3c6ea Avoid casting from (int *) to (size_t *) in order to fix udf_iconv on amd64.
Reviewed by:	scottl
MFC after:	2 weeks
2005-06-05 02:09:48 +00:00
Craig Rodrigues
fd225fe4a3 Do not declare a struct as extern, and then implement
it as static in the same file.  This is not legal C,
and GCC 4.0 will issue an error.

Reviewed by:	phk
Approved by:	das (mentor)
2005-05-31 14:50:49 +00:00
Christian Brueffer
befb7f333f Fix three typos in comments. Two of them obtained from OpenBSD.
MFC after:	3 days
2005-05-11 21:10:35 +00:00
Alexander Kabaev
42e1d99cc8 Do not dereference dvp pointer before doing a NULL check.
Noticed by: Coverity Prevent analysis tool.
2005-05-11 19:08:38 +00:00
Eric Anholt
1493ed4108 Staticize a symbol used only in this file.
PR:		kern/43613
Submitted by:	Matt Emmerton, matt at gsicomp dot on dot ca
2005-05-06 20:47:09 +00:00
Robert Drehmel
9c0c1ab87d The printf(9) `%p' conversion specifier puts an "0x" in
front of the pointer value.  Therefore, remove the "0x"
from the format string.
2005-05-06 00:15:57 +00:00
Robert Drehmel
e7aabf96a4 Fix our NTFS readdir function.
To check a directory's in-use bitmap bit by bit, we use
a pointer to an 8 bit wide unsigned value.

The index used to dereference this pointer is calculated
by shifting the bit index right 3 bits.  Then we do a
logical AND with the bit# represented by the lower 3
bits of the bit index.

This is an idiomatic way of iterating through a bit map
with simple bitwise operations.

This commit fixes the bug that we only checked bits
3:0 of each 8 bit chunk, because we only used bits 1:0
of the bit index for the bit# in the current 8 bit value.
This resulted in files not being returned by getdirentries(2).

Change the type of the bit map pointer from `char *' to
`u_int8_t *'.
2005-05-06 00:06:06 +00:00
Takanori Watanabe
1e8a69609e Fix breakage on alpha.
Pointed out by: hrs via IRC
2005-05-05 07:02:51 +00:00
Takanori Watanabe
4ebd3ea1f6 Make smbfs capable to use 16bit char set in filenames.
PR:78110
2005-05-04 15:05:46 +00:00
Jeff Roberson
d65736a1c0 - Set the v_object pointer after a successful VOP_OPEN(). This isn't a
perfect solution as the lower vm object can change at unpredictable times
   if our lower vp happens to be on another unionfs, etc.

Submitted by:	Oleg Sharoiko <os@rsu.ru>
2005-05-03 11:05:33 +00:00
Jeff Roberson
7b6b7657d2 - In devfs_open() and devfs_close() grab Giant if the driver sets NEEDGIANT.
We still have to DROP_GIANT and PICKUP_GIANT when NEEDGIANT is not set
   because vfs is still sometime entered with Giant held.
2005-05-01 00:56:34 +00:00
Dag-Erling Smørgrav
4cd27a97bc Fix an old pasto. 2005-04-30 16:27:20 +00:00
Jeff Roberson
cd360e947b - Mark devfs as MNTK_MPSAFE as I belive it does not require Giant.
Sponsored by:	Isilon Systems, Inc.
Agreed in principle by:		phk
2005-04-30 11:24:17 +00:00
Jeff Roberson
568556d720 - Fix several locking problems in unionfs_mount so that it will come
closer to passing DEBUG_VFS_LOCKS.
2005-04-27 09:07:13 +00:00
Jeff Roberson
189dd72df3 - Pass the ISOPEN flag down to our lower filesystems.
- Remove an erroneous VOP lock assert.
2005-04-27 09:06:06 +00:00
Jeff Roberson
7fd2deacb4 - As this is presently the one and only place where duplicate acquires of
the vnode interlock are allowed mark it by passing MTX_DUPOK to this
   lock operation only.

Sponsored by:	Isilon Systems, Inc.
2005-04-22 22:42:44 +00:00
David Schultz
23e8fcaf66 Disable negative name caching for msdosfs to work around a bug.
Since the name cache is case-sensitive and msdosfs isn't,
creating a file 'foo' won't invalidate a negative entry for 'FOO'.
There are similar problems related to 8.3 filenames.

A better solution is to override VOP_LOOKUP with a method that
canonicalizes the name, then calls vfs_cache_lookup().  Unfortunately,
it's not quite that simple because vfs_cache_lookup() will call
msdosfs_lookup() on a cache miss, and msdosfs_lookup() needs a way to
get at the original component name.
2005-04-16 23:47:19 +00:00
Nate Lawson
58ad326be6 Fix mbnambuf support for multi-byte characters. If a substring is larger
than WIN_CHARS bytes, we shift the suffix (previous substrings) upwards
by the amount this substring exceeds its WIN_CHARS slot.  Profiling shows
this change is indistinguishable from the previous code at 95% confidence.
This bug would result in attempts to access or create files or directories
with multi-byte characters returning an error but no data loss.

Reported and tested by:	avatar
MFC after:	3 days
2005-04-16 01:49:50 +00:00
Christian Brueffer
9f07f44971 Correct typo.
Obtained from:	OpenBSD
2005-04-14 14:40:09 +00:00
Jeff Roberson
4585e3ac5a - Change all filesystems and vfs_cache to relock the dvp once the child is
locked in the ISDOTDOT case.  Se vfs_lookup.c r1.79 for details.

Sponsored by:	Isilon Systems, Inc.
2005-04-13 10:59:09 +00:00
Jeff Roberson
8e82c4cd5f - Clear VI_OWEINACT before calling vget() with no lock type. We know
the node is actually already locked, and VOP_INACTIVE is not desirable
   in this case.
2005-04-11 11:17:20 +00:00
Jeff Roberson
316ec7bb7f - Honor the flags argument passed to null_root(). The filesystem below
us will decide whether or not to grab a real shared lock.
2005-04-11 11:16:29 +00:00
Xin LI
e8943128a9 Initialize vp before using it. Failing to do this can cause instant
panic when trying to access a file on mounted smbfs.

Submitted by:	takawata at jp freebsd org
2005-04-10 03:17:42 +00:00
Poul-Henning Kamp
f4b423ae60 Give msdosfs a unique inode number which is really the byteoffset of
the directory entry.

This solves the corruption problem I belive.

Regression test script by:	silby
2005-04-07 07:55:37 +00:00
Jeff Roberson
9370c333ce - Fix union's assumptions about when the dvp is unlocked. It is only
unlocked in the ISDOTDOT case now, not for all !ISLASTCN lookups.
2005-04-04 09:36:26 +00:00
Poul-Henning Kamp
f4f6abcb4e Explicitly hold a reference to the cdev we have just cloned. This
closes the race where the cdev was reclaimed before it ever made it
back to devfs lookup.
2005-03-31 12:19:44 +00:00
Poul-Henning Kamp
9477d73e32 cdev (still) needs per instance uid/gid/mode
Add unlocked version of dev_ref()

Clean up various stuff in sys/conf.h
2005-03-31 10:29:57 +00:00
Poul-Henning Kamp
eb151cb989 Rename dev_ref() to dev_refl() 2005-03-31 06:51:54 +00:00
Jeff Roberson
ea124bf597 - LK_NOPAUSE is a nop now.
Sponsored by:	Isilon Systems, Inc.
2005-03-31 04:27:49 +00:00
Jeff Roberson
da1c9cb2b5 - Remove wantparent, it is no longer necessary. An assert in vfs_lookup.c
prevents any callers from doing a modifying op without
   LOCKPARENT or WANTPARENT.
2005-03-29 13:09:42 +00:00
Jeff Roberson
fcc9c112cf - Remove wantparent, it is no longer necessary. An assert in vfs_lookup.c
prevents any callers from doing a DELETE or RENAME without locking
   the parent.
2005-03-29 13:04:00 +00:00
Jeff Roberson
5c5e51fd9a - cache_lookup() now locks the new vnode for us to prevent some races.
Remove redundant code.

Sponsored by:	Isilon Systems, Inc.
2005-03-29 13:00:37 +00:00
Jeff Roberson
654f669c9a - Correct the dprintf format int the _lookup routine.
Spotted by:	pjd
2005-03-28 14:26:01 +00:00
Jeff Roberson
e4fefa9bd5 - Garbage collect an unused variable. 2005-03-28 13:45:09 +00:00
Jeff Roberson
b2255473fb - Don't panic if we can't lock a child in lookup, return an error instead.
- Only unlock the directory if this is a DOTDOT lookup.  Previously this
   code could have deadlocked if there was a DOTDOT lookup with LOCKPARENT
   set and another thread was locking the other way up the tree.

Sponsored by:	Isilon Systems, Inc.
2005-03-28 13:39:16 +00:00
Jeff Roberson
e32addd40d - Remove unnecessary LOCKPARENT manipulation.
Sponsored by:	Isilon Systems, Inc.
2005-03-28 13:29:15 +00:00
Jeff Roberson
ce5846dc19 - nwfs_lookup() is no longer responsible for unlocking the dvp, this is
handled in vfs_lookup.c.  This code was missing PDIRUNLOCK use prior
   to the removal of PDIRUNLOCK in rev 1.73 of vfs_lookup.c.

Sponsored by:	Isilon Systems, Inc.
2005-03-28 09:46:33 +00:00
Jeff Roberson
7539637508 - hpfs_lookup() is no longer responsible for unlocking the dvp, this is
handled in vfs_lookup.c.  This code was missing PDIRUNLOCK use prior
   to the removal of PDIRUNLOCK in rev 1.73 of vfs_lookup.c.

Sponsored by:   Isilon Systems, Inc.
2005-03-28 09:40:59 +00:00
Jeff Roberson
eddcb03d02 - We no longer have to bother with PDIRUNLOCK, lookup() handles it for us.
Sponsored by:   Isilon Systems, Inc.
2005-03-28 09:34:36 +00:00
Jeff Roberson
27ad03cb5d - We no longer have to bother with PDIRUNLOCK, lookup() handles it for us.
- In the ISDOTDOT case we have to unlock the dvp before locking the child,
   if this fails we must relock dvp before returning an error.  This was
   missing before.

Sponsored by:	Isilon Systems, Inc.
2005-03-28 09:31:57 +00:00
Jeff Roberson
f6576f194e - We no longer have to bother with PDIRUNLOCK, lookup() handles it for us.
- Network filesystems are written with a special idiom that checks the
   cache first, and may even unlock dvp before discovering that a network
   round-trip is required to resolve the name.  I believe dvp is prevented
   from being recycled even in the forced unmount case by the shared lock
   on the mount point.  If not, this code should grow checks for VI_DOOMED
   after it relocks dvp or it will access NULL v_data fields.

Sponsored by:	Isilon Systems, Inc.
2005-03-28 09:29:58 +00:00
Jeff Roberson
7d2832e654 - Pass LK_EXCLUSIVE as the lock type to vget in vfs_hash_insert(). 2005-03-25 10:51:55 +00:00
Jeff Roberson
a176ceb322 - Update vfs_root implementations to match the new prototype. None of
these filesystems will support shared locks until they are explicitly
   modified to do so.  Careful review must be done to ensure that this
   is safe for each individual filesystem.

Sponsored by:   Isilon Systems, Inc.
2005-03-24 07:39:03 +00:00
Jeff Roberson
d9b2d9f7a2 - Update vfs_root implementations to match the new prototype. None of
these filesystems will support shared locks until they are explicitly
   modified to do so.  Careful review must be done to ensure that this
   is safe for each individual filesystem.

Sponsored by:	Isilon Systems, Inc.
2005-03-24 07:36:16 +00:00
Poul-Henning Kamp
7f661c6ba1 Use subr_unit 2005-03-19 08:22:36 +00:00
Poul-Henning Kamp
c049546e16 Also remember to set the fsid here. 2005-03-17 15:15:29 +00:00
Poul-Henning Kamp
e3b803b148 Forgot to replace code to set fsid in vop_getattr. 2005-03-17 14:43:40 +00:00
Poul-Henning Kamp
800b42bde0 Prepare for the final onslaught on devices:
Move uid/gid/mode from cdev to cdevsw.

Add kind field to use for devd(8) later.

Bump both D_VERSION and __FreeBSD_version
2005-03-17 12:07:00 +00:00
Jeff Roberson
ba73105324 - Lock the clearing of v_data so it is safe to inspect it with the
interlock.

Sponsored by:	Isilon Systems, Inc.
2005-03-17 12:00:05 +00:00
Poul-Henning Kamp
51f5ce0c8c Add two arguments to the vfs_hash() KPI so that filesystems which do
not have unique hashes (NFS) can also use it.
2005-03-16 11:20:51 +00:00
Poul-Henning Kamp
9ed94841d9 Remove unused file 2005-03-16 11:10:38 +00:00
Poul-Henning Kamp
fd475cc19d Remove inode fields previously used for private inode hash tables. 2005-03-16 08:09:52 +00:00
Poul-Henning Kamp
beddd41467 XXX: unnecessary pointer in inode. 2005-03-16 07:21:38 +00:00
Poul-Henning Kamp
7e1dd21ccf Don't store the disk cdev in all inodes. 2005-03-16 07:17:39 +00:00
Poul-Henning Kamp
e0251bbbe7 Don't hold a reference to the disk vnode for each inode.
Eliminate cdev and vnode pointer to the disk from the inodes,
the mount holds everything we need.
2005-03-15 21:09:52 +00:00
Poul-Henning Kamp
3b97f388d8 Eliminate cdev pointer in inodes, they're not used or needed.
The cdev could have been pulled out of the mountpoint cheaper back
when it was used anyway.
2005-03-15 20:57:25 +00:00
Poul-Henning Kamp
de68347b1b Don't hold a reference on the disk vnode for each inode. 2005-03-15 20:50:58 +00:00
Poul-Henning Kamp
45c26fa2b6 Improve the vfs_hash() API: vput() the unneeded vnode centrally to
avoid replicating the vput in all the filesystems.
2005-03-15 20:00:03 +00:00
Jeff Roberson
bc855512c8 - Assume that all lower filesystems now support proper locking. Assert
that they set v->v_vnlock.  This is true for all filesystems in the
   tree.
 - Remove all uses of LK_THISLAYER.  If the lower layer is locked, the
   null layer is locked.  We only use vget() to get a reference now.
   null essentially does no locking.  This fixes LOOKUP_SHARED with
   nullfs.
 - Remove the special LK_DRAIN considerations, I do not believe this is
   needed now as LK_DRAIN doesn't destroy the lower vnode's lock, and
   it's hardly used anymore.
 - Add one well commented hack to prevent the lowervp from going away
   while we're in it's VOP_LOCK routine.  This can only happen if we're
   forcibly unmounted while some callers are waiting in the lock.  In
   this case the lowervp could be recycled after we drop our last ref
   in null_reclaim().  Prevent this with a vhold().
2005-03-15 13:49:33 +00:00
Poul-Henning Kamp
7649bbb0b0 Disable two users of findcdev. They do the wrong thing now and will
need to be fixed.  In both cases the API should be reengineered to do
something (more) sensible.
2005-03-15 12:39:30 +00:00
Jeff Roberson
9feb7408f8 - We have to transfer lockers after reseting our vnlock pointer.
Sponsored by:	Isilon Systems, Inc.
2005-03-15 11:28:45 +00:00
Poul-Henning Kamp
46d7d4a332 Don't export major,minor, instead export tty name. 2005-03-15 11:05:11 +00:00
Poul-Henning Kamp
6bc6a87cc9 Print devtoname() instead of minor(). 2005-03-15 10:01:31 +00:00
Poul-Henning Kamp
40d04a26a0 Fix typo: pointers are not boolean in style(9). 2005-03-15 10:01:14 +00:00
Poul-Henning Kamp
e82ef95c11 Simplify the vfs_hash calling convention. 2005-03-15 08:07:07 +00:00
Dag-Erling Smørgrav
0e3b5c73b2 Hook pfs_lookup() up to vfs_cachedlookup_desc instead of vfs_lookup_desc,
as suggested by Matt's comment.  Also fix some style and paranoia issues.

The entire function could benefit from review by a VFS guru.

MFC after:	6 weeks
2005-03-14 16:24:50 +00:00
Dag-Erling Smørgrav
bc593ccd83 Fix two long-standing bugs in pfs_readdir():
Since we used an sbuf of size resid to accumulate dirents, we would end
up returning one byte short when we had enough dirents to fill or exceed
the size of the sbuf (the last byte being lost to bogus NUL termination)
causing the next call to return EINVAL due to an unaligned offset.  This
went undetected for a long time because I did most of my testing in
single-user mode, where there are rarely enough processes to fill the
4096-byte buffer ls(1) uses.  The most common symptom of this bug is that
tab completion of /proc or /compat/linux/proc does not work properly when
many processes are running.

Also, a check near the top would return EINVAL if resid was smaller than
PFS_DELEN, even if it was 0, which is frequently the case and perfectly
allowable.  Change the test so that it returns 0 if resid is 0.

MFC after:	2 weeks
2005-03-14 16:21:32 +00:00
Dag-Erling Smørgrav
cb5abc7d2d If PSEUDOFS_TRACE is defined, create a sysctl knob to enable / disable
pseudofs call tracing.
2005-03-14 16:06:47 +00:00
Dag-Erling Smørgrav
de52d21a02 fbsdidize. 2005-03-14 15:54:11 +00:00
Poul-Henning Kamp
2f00593534 Use vfs_hash instead of home-rolled. 2005-03-14 14:41:37 +00:00
Poul-Henning Kamp
dfb9f846e9 Use vfs_hash instead of home-rolled. 2005-03-14 13:22:41 +00:00
Poul-Henning Kamp
4e94fafc4f Use vfs_hash instead of home-rolled.
Correct locking around g_vfs_close()
2005-03-14 12:29:39 +00:00
Poul-Henning Kamp
a30fc63b19 Use vfs_hash instead of home-rolling. 2005-03-14 12:24:35 +00:00
Jeff Roberson
c1e7e9ba9b - VOP_INACTIVE should no longer drop the vnode lock.
Sponsored by:   Isilon Systems, Inc.
2005-03-13 12:18:47 +00:00
Jeff Roberson
8da0046596 - The VI_DOOMED flag now signals the end of a vnode's relationship with
the filesystem.  Check that rather than VI_XLOCK.
 - VOP_INACTIVE should no longer drop the vnode lock.
 - The vnode lock is required around calls to vrecycle() and vgone().

Sponsored by:	Isilon Systems, Inc.
2005-03-13 12:18:25 +00:00
Jeff Roberson
c0f681c21d - The VI_DOOMED flag now signals the end of a vnode's relationship with
the filesystem.  Check that rather than VI_XLOCK.

Sponsored by:	Isilon Systems, Inc.
2005-03-13 12:14:56 +00:00
Jeff Roberson
172ffe319a - The c_lock in the coda node does not offer any features over the standard
vnode lock.  Remove the c_lock and use the vn lock in its place.
 - Keep the coda lock functions so that the debugging information is
   preserved, but call directly to the vop_std*lock routines for the real
   functionality.

Sponsored by:	Isilon Systems, Inc.
2005-03-13 12:09:34 +00:00
Jeff Roberson
3100b70037 - Deadfs may now use the standard vop lock, get rid of dead_lock().
- We no longer have to take the XLOCK state into consideration in any
   routines.

Sponsored by:	Isilon Systems, Inc.
2005-03-13 12:06:20 +00:00
David E. O'Brien
bdc172ab8f Used unsigned version.
Submitted by:	jmallett
2005-03-12 06:06:04 +00:00
David E. O'Brien
fb2eece6d2 Fix kernel build on 64-bit machines. 2005-03-12 03:50:39 +00:00
Nate Lawson
d81812be67 Correct a last-minute thinko. Instead of copying the nul with the string,
nul-terminate the dp->d_name directly and only copy the string.
2005-03-11 23:35:23 +00:00
Nate Lawson
4cdb148352 The mbnambuf routines combine multiple substrings into a single
long filename.  Each substring is indexed by the windows ID, a
sequential one-based value.  The previous code was extremely slow,
doing a malloc/strcpy/free for each substring.

This code optimizes these routines with this in mind, using the ID
to index into a single array and concatenating each WIN_CHARS chunk
at once.  (The last chunk is variable-length.)

This code has been tested as working on an FS with difficult filename
sizes (255, 13, 26, etc.)  It gives a 77.1% decrease in profiled
time (total across all functions) and a 73.7% decrease in wall time.
Test was "ls -laR > /dev/null".

Per-function time savings:
mbnambuf_init:  -90.7%
mbnambuf_write: -18.7%
mbnambuf_flush: -67.1%

MFC after:	1 month
2005-03-11 23:27:45 +00:00
Poul-Henning Kamp
2647407860 One more bit of the major/minor patch to make ttyname happy as well. 2005-03-10 18:49:17 +00:00
Poul-Henning Kamp
b43ab0e378 Try to fix the mess I made of devname, with the minimal subset of the
larger minor/major patch which was posted for testing.
2005-03-10 18:21:34 +00:00
Poul-Henning Kamp
f5af7353c0 Remove kernelside support for devfs rules filtering on major numbers. 2005-03-08 19:51:27 +00:00
Poul-Henning Kamp
a24042b727 Avoid a couple of mutex operations in the process exit path for the
common case where procfs have never been mounted.

OK'ed by:	des
2005-03-01 12:20:49 +00:00
Poul-Henning Kamp
7ce296cf04 Remove debug printout of major/minor numbers, print name instead. 2005-02-27 21:16:26 +00:00
Sam Leffler
3cdbd5fb04 remove dead code
Submitted by:	Coverity Prevent analysis tool
2005-02-22 19:02:24 +00:00
Poul-Henning Kamp
0454a53d65 We may not have an actual cdev at this point. 2005-02-22 18:17:31 +00:00
Poul-Henning Kamp
aa2f6ddc3f Reap more benefits from DEVFS:
List devfs_dirents rather than vnodes off their shared struct cdev, this
saves a pointer field in the vnode at the expense of a field in the
devfs_dirent.  There are often 100 times more vnodes so this is bargain.
In addition it makes it harder for people to try to do stypid things like
"finding the vnode from cdev".

Since DEVFS handles all VCHR nodes now, we can do the vnode related
cleanup in devfs_reclaim() instead of in dev_rel() and vgonel().
Similarly, we can do the struct cdev related cleanup in dev_rel()
instead of devfs_reclaim().

	rename idestroy_dev() to destroy_devl() for consistency.

	Add LIST_ENTRY de_alias to struct devfs_dirent.
	Remove v_specnext from struct vnode.
	Change si_hlist to si_alist in struct cdev.
	String new devfs vnodes' devfs_dirent on si_alist when
	we create them and take them off in devfs_reclaim().

	Fix devfs_revoke() accordingly.  Also don't clear fields
	devfs_reclaim() will clear when called from vgone();

	Let devfs_reclaim() call dev_rel() instead of vgonel().

	Move the usecount tracking from dev_rel() to devfs_reclaim(),
	and let dev_rel() take a struct cdev argument instead of vnode.

	Destroy SI_CHEAPCLONE devices in dev_rel() (instead of
	devfs_reclaim()) when they are no longer used.   (This
	should maybe happen in devfs_close() instead.)
2005-02-22 15:51:07 +00:00
Poul-Henning Kamp
5a98dd4df5 vp->v_id is a private field for the vfs namecache and it is a big mistake
that NFS ever started using it and an even bigger that it got copied&pasted
to nwfs and smbfs.

Replace with use of vhold()/vdrop().
2005-02-22 15:06:30 +00:00
Poul-Henning Kamp
f69d42a1d2 Use vn_printf() instead of home-rolling. 2005-02-22 14:58:59 +00:00
Poul-Henning Kamp
1a1457d427 Make dev_ref() require the dev_lock() to be held and use it from
devfs instead of directly frobbing the si_refcount.
2005-02-22 14:41:04 +00:00
David Schultz
0e2b18143f Replace the workaround for a deadlock bug in Coda with a different
workaround that does not rely on vfs_start().
2005-02-20 23:01:57 +00:00
Robert Watson
1bfca411a6 Remove basically unused root_vp pointer in udfmount.
MFC after:	1 week
Discussed with:	scottl
2005-02-18 11:47:51 +00:00
Robert Watson
5d0c377bfe Conditionalize cd9660 chattiness regarding the nature of the file system
mounted (is it Joliet, RockRidge, High Sierra) based on bootverbose.
Most file systems don't generate log messages based on details of the
file system superblock, and these log messages disrupt sysinstall output
during a new install from CD.  We may want to explore exposing this
status information using nmount() at some point.

MFC after:	3 days
2005-02-18 10:49:55 +00:00
Poul-Henning Kamp
4d8ac58b05 Introduce vx_wait{l}() and use it instead of home-rolled versions. 2005-02-17 10:49:51 +00:00
Poul-Henning Kamp
5ece08f57a Make a SYSCTL_NODE static 2005-02-10 12:23:29 +00:00
Poul-Henning Kamp
66ae53f804 make M_NTFSMNT and ntfs_calccfree() static 2005-02-10 12:09:49 +00:00
Poul-Henning Kamp
9def42f333 Make fdesc_root static 2005-02-10 12:09:15 +00:00
Poul-Henning Kamp
f70f851c60 Make smbfs_debuglevel private. 2005-02-10 12:07:02 +00:00
Poul-Henning Kamp
271c679c17 don't call vprint with NULL. 2005-02-10 12:06:34 +00:00
Poul-Henning Kamp
87c045d5a2 Statize malloc types.
Don't call vprint with NULL.
2005-02-10 12:05:06 +00:00
Poul-Henning Kamp
df32e67c73 Statize devfs_ops_f 2005-02-10 12:04:26 +00:00
Poul-Henning Kamp
c711aea6ca Make a bunch of malloc types static.
Found by:	src/tools/tools/kernxref
2005-02-10 12:02:37 +00:00
Nate Lawson
2a05fbb949 Unroll the loop for calculating the 8.3 filename checksum. In testing
on my P3, microbenchmarks show the unrolled version is 78x faster.  In
actual use (recursive ls), this gives an average of 9% improvement in
system time and 2% improvement in wall time.
2005-02-08 07:51:14 +00:00
Poul-Henning Kamp
61f9cf813f Remove vop_destroyvobject() 2005-02-07 09:23:34 +00:00
Poul-Henning Kamp
7bf4b73d6c Deimplement vop_destroyvobject() 2005-02-07 08:23:36 +00:00
Poul-Henning Kamp
49829f2ec5 Remove vop_destroyvobject() initialization. 2005-02-07 08:04:24 +00:00
Peter Edwards
72b3e305af Unbreak a few filesystems for which vnode_create_vobject() wasn't being
called in "open", causing mmap() to fail.

Where possible, pass size of file to vnode_create_vobject() rather
than having it find it out the hard way via VOP_LOOKUP

Reviewed by: phk
2005-01-29 16:23:39 +00:00
Poul-Henning Kamp
a369f34d76 Make filesystems get rid of their own vnodes vnode_pager object in
VOP_RECLAIM().
2005-01-28 14:42:17 +00:00
Poul-Henning Kamp
d4eb29ba71 Remove unused argument to vrecycle() 2005-01-28 13:08:21 +00:00
Peter Edwards
174d6a9f73 Make NTFS at least minimally usable after bufobj and GEOM fallout.
mmap() on NTFS files was hosed, returning pages offset from the
start of the disk rather than the start of the file. (ie, "cp" of
a 1-block file would get you a copy of the boot sector, not the
data in the file.) The solution isn't ideal, but gives a functioning
filesystem.

Cached vnode lookup was also broken, resulting in vnode haemorrhage.
A lookup on the same file twice would give you two vnodes, and the
resulting cached pages.

Just recently, mmap() was broken due to a lack of a call to
vnode_create_vobject() in ntfs_open().

Discussed with: phk@
2005-01-27 13:50:27 +00:00
Poul-Henning Kamp
84a6975215 Introduce and use g_vfs_close(). 2005-01-25 15:52:04 +00:00
Poul-Henning Kamp
729fcf7efb Take VOP_GETVOBJECT() out to pasture. We use the direct pointer now. 2005-01-25 00:42:16 +00:00
Poul-Henning Kamp
69816ea35e Kill VOP_CREATEVOBJECT(), it is now the responsibility of the filesystem
for a given vnode to create a vnode_pager object if one is needed.
2005-01-25 00:12:24 +00:00
Poul-Henning Kamp
2a967a99c3 Don't implement vop_createvobject(), vop_open() and vop_close() manages
this for nullfs now.
2005-01-24 23:54:45 +00:00
Poul-Henning Kamp
dcff5b1440 Don't call VOP_CREATEVOBJECT(), it's the responsibility of the
filesystem which owns the vnode.
2005-01-24 23:53:54 +00:00
Poul-Henning Kamp
c683c4ee04 Add null_open() and null_close() which calls null_bypass() and managed
the v_object pointer.
2005-01-24 22:56:24 +00:00
Poul-Henning Kamp
625d4bc03a Create a vp->v_object in VFS_FHTOVP() if we want to be exportable
with NFS.

We are moving responsibility for creating the vnode_pager object into
the filesystems which own the vnode, and this is one of the places
we have to cover.

We call vnode_create_vobject() directly because we own the vnode.

If we can get the size easily, pass it as an argument to save the
call to VOP_GETATTR() in vnode_create_vobject()
2005-01-24 21:51:19 +00:00