1
0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-24 11:29:10 +00:00
Commit Graph

1506 Commits

Author SHA1 Message Date
Poul-Henning Kamp
1ecf144493 fifos doesn't need a vop_lookup, the default will do fine. 2004-11-13 18:51:13 +00:00
Poul-Henning Kamp
124e4c3be8 Introduce an alias for FILEDESC_{UN}LOCK() with the suffix _FAST.
Use this in all the places where sleeping with the lock held is not
an issue.

The distinction will become significant once we finalize the exact
lock-type to use for this kind of case.
2004-11-13 11:53:02 +00:00
Tom Rhodes
18192f69c7 Remove stale comment after previous commit.
Noticed by:	pjd
2004-11-09 23:19:21 +00:00
Poul-Henning Kamp
282d0382ac Detect root mount attempts on the flag, not on the NULL path. 2004-11-09 22:21:52 +00:00
Poul-Henning Kamp
64042a76b6 Refuse attempts to mount root filesystem 2004-11-09 22:21:10 +00:00
Poul-Henning Kamp
b0aed5267e Refuse attemps to mount root filesystem 2004-11-09 22:14:57 +00:00
Poul-Henning Kamp
56dd3a6182 Add optional device vnode bypass to DEVFS.
The tunable vfs.devfs.fops controls this feature and defaults to off.

When enabled (vfs.devfs.fops=1 in loader), device vnodes opened
through a filedescriptor gets a special fops vector which instead
of the detour through the vnode layer goes directly to DEVFS.

Amongst other things this allows us to run Giant free read/write to
device drivers which have been weaned off D_NEEDGIANT.

Currently this means /dev/null, /dev/zero, disks, (and maybe the
random stuff ?)

On a 700MHz K7 machine this doubles the speed of
	dd if=/dev/zero of=/dev/null bs=1 count=1000000

This roughly translates to shaving 2usec of each read/write syscall.

The poll/kqfilter paths need more work before they are giant free,
this work is ongoing in p4::phk_bufwork

Please test this and report any problems, LORs etc.
2004-11-08 10:46:47 +00:00
Poul-Henning Kamp
5349c79d75 Properly implement a default version of VOP_GETWRITEMOUNT.
Remove improper access to vop_stdgetwritemount() which should and
will instead rely on the VOP default path.
2004-11-06 11:41:22 +00:00
Poul-Henning Kamp
ecc14aae12 Add back securelevel check for disks.
XXX: This should live in geom_dev.c but we don't have access to the
cred there.
XXX: XXX:  This may not matter anymore since filesystems use geom_vfs.
2004-11-04 09:17:55 +00:00
Poul-Henning Kamp
c7aaa71ce3 s/ffs/ntfs/
Fix error handling to not use VOP_CLOSE() on the disk.

Spotted by:	tegge
2004-11-04 07:18:54 +00:00
Poul-Henning Kamp
e1c6cbef33 Make a more whole-hearted attempt at GEOM'ifying NTFS.
I must have been sleepy when I did the first pass.

Spotted by:	tegge
2004-11-03 21:36:41 +00:00
Poul-Henning Kamp
4cea3289da Don't give disks special treatment, they don't come this way anymore. 2004-10-29 11:10:55 +00:00
Poul-Henning Kamp
c108bb741c Remove VOP_SPECSTRATEGY() from the system. 2004-10-29 10:59:28 +00:00
Poul-Henning Kamp
5cdfa40c6b Move NTFS to GEOM backing instead of DEVFS.
For details, please see src/sys/ufs/ffs/ffs_vfsops.c 1.250.
2004-10-29 10:43:45 +00:00
Poul-Henning Kamp
a96d2ea768 Move HPFS to GEOM backing instead of DEVFS.
For details, please see src/sys/ufs/ffs/ffs_vfsops.c 1.250.
2004-10-29 10:43:07 +00:00
Poul-Henning Kamp
bf7e2ae1c4 Move CD9660 to GEOM backing instead of DEVFS.
For details, please see src/sys/ufs/ffs/ffs_vfsops.c 1.250.
2004-10-29 10:41:44 +00:00
Poul-Henning Kamp
429c018a9f Move UDF to GEOM backing instead of DEVFS.
For details, please see src/sys/ufs/ffs/ffs_vfsops.c 1.250.
2004-10-29 10:40:58 +00:00
Poul-Henning Kamp
9a135592e2 Move MSDOSFS to GEOM backing instead of DEVFS.
For details, please see src/sys/ufs/ffs/ffs_vfsops.c 1.250.
2004-10-29 10:40:14 +00:00
Poul-Henning Kamp
6afb3b1c37 Give dev_strategy() an explict cdev argument in preparation for removing
buf->b-dev.

Put a bio between the buf passed to dev_strategy() and the device driver
strategy routine in order to not clobber fields in the buf.

Assert copyright on vfs_bio.c and update copyright message to canonical
text.  There is no legal difference between John Dysons two-clause
abbreviated BSD license and the canonical text.
2004-10-29 07:16:37 +00:00
Poul-Henning Kamp
f00f5d71c2 Reduce the locking activity by epsilon by checking VNON condition before
releasing the mountlock.
2004-10-28 08:22:11 +00:00
Poul-Henning Kamp
45628dd373 What can I say: don't allow people to mount DEVFS with option "nodev". 2004-10-28 06:03:25 +00:00
Poul-Henning Kamp
d83b7498a4 Eliminate unnecessary KASSERTs.
Don't use bp->b_vp in VOP_STRATEGY: the vnode is passed in as an argument.
2004-10-27 06:48:21 +00:00
Poul-Henning Kamp
5d9d81e7ea Put the I/O block size in bufobj->bo_bsize.
We keep si_bsize_phys around for now as that is the simplest way to pull
the number out of disk device drivers in devfs_open().  The correct solution
would be to do an ioctl(DIOCGSECTORSIZE), but the point is probably mooth
when filesystems sit on GEOM, so don't bother for now.
2004-10-26 07:39:12 +00:00
Poul-Henning Kamp
156cb26583 Loose the v_dirty* and v_clean* alias macros.
Check the count field where we just want to know the full/empty state,
rather than using TAILQ_EMPTY() or TAILQ_FIRST().
2004-10-25 09:14:03 +00:00
Poul-Henning Kamp
ff7c5a4880 Alas, poor SPECFS! -- I knew him, Horatio; A filesystem of infinite
jest, of most excellent fancy: he hath taught me lessons a thousand
times; and now, how abhorred in my imagination it is! my gorge rises
at it.  Here were those hacks that I have curs'd I know not how
oft.  Where be your kludges now? your workarounds? your layering
violations, that were wont to set the table on a roar?

Move the skeleton of specfs into devfs where it now belongs and
bury the rest.
2004-10-22 09:59:37 +00:00
John Baldwin
78c85e8dfc Rework how we store process times in the kernel such that we always store
the raw values including for child process statistics and only compute the
system and user timevals on demand.

- Fix the various kern_wait() syscall wrappers to only pass in a rusage
  pointer if they are going to use the result.
- Add a kern_getrusage() function for the ABI syscalls to use so that they
  don't have to play stackgap games to call getrusage().
- Fix the svr4_sys_times() syscall to just call calcru() to calculate the
  times it needs rather than calling getrusage() twice with associated
  stackgap, etc.
- Add a new rusage_ext structure to store raw time stats such as tick counts
  for user, system, and interrupt time as well as a bintime of the total
  runtime.  A new p_rux field in struct proc replaces the same inline fields
  from struct proc (i.e. p_[isu]ticks, p_[isu]u, and p_runtime).  A new p_crux
  field in struct proc contains the "raw" child time usage statistics.
  ruadd() has been changed to handle adding the associated rusage_ext
  structures as well as the values in rusage.  Effectively, the values in
  rusage_ext replace the ru_utime and ru_stime values in struct rusage.  These
  two fields in struct rusage are no longer used in the kernel.
- calcru() has been split into a static worker function calcru1() that
  calculates appropriate timevals for user and system time as well as updating
  the rux_[isu]u fields of a passed in rusage_ext structure.  calcru() uses a
  copy of the process' p_rux structure to compute the timevals after updating
  the runtime appropriately if any of the threads in that process are
  currently executing.  It also now only locks sched_lock internally while
  doing the rux_runtime fixup.  calcru() now only requires the caller to
  hold the proc lock and calcru1() only requires the proc lock internally.
  calcru() also no longer allows callers to ask for an interrupt timeval
  since none of them actually did.
- calcru() now correctly handles threads executing on other CPUs.
- A new calccru() function computes the child system and user timevals by
  calling calcru1() on p_crux.  Note that this means that any code that wants
  child times must now call this function rather than reading from p_cru
  directly.  This function also requires the proc lock.
- This finishes the locking for rusage and friends so some of the Giant locks
  in exit1() and kern_wait() are now gone.
- The locking in ttyinfo() has been tweaked so that a shared lock of the
  proctree lock is used to protect the process group rather than the process
  group lock.  By holding this lock until the end of the function we now
  ensure that the process/thread that we pick to dump info about will no
  longer vanish while we are trying to output its info to the console.

Submitted by:	bde (mostly)
MFC after:	1 month
2004-10-05 18:51:11 +00:00
Takanori Watanabe
6e4c3467ce Minor Bug fix. Some file was not translated. 2004-10-05 16:53:37 +00:00
Takanori Watanabe
919f5630ec Fix unionfs problems when a directory is mounted on other directory
with different file systems. This may cause ill things
with my previous fix. Now it translate fsid of direct child of
mount point directory only.

Pointed out by: Uwe Doering
2004-10-05 05:59:29 +00:00
Takanori Watanabe
d354520ebc Fix a problem when you try to mount a directory on another directory
belongs to the same filesystem. In this problem, getcwd(3) will fail.

I found the problem two years ago and I have forgotten to merge.

http://docs.FreeBSD.org/cgi/mid.cgi?200202251435.XAA91094
2004-10-02 17:17:04 +00:00
David Schultz
616b5f90d3 Don't PHOLD() the target process in procfs, since this is already done
in pseudofs.  Moreover, PHOLD() may block between the p_candebug()
access check and the actual operation.
2004-10-01 05:01:17 +00:00
Poul-Henning Kamp
891822a853 XXX mark two places where we do not hold a threadcount on the dev when
frobbing the cdevsw.

In both cases we examine only the cdevsw and it is a good question if we
weren't better off copying those properties into the cdev in the first
place.  This question will be revisited.
2004-09-24 08:32:36 +00:00
Poul-Henning Kamp
9bd188b936 Hold proper thread count while frobbing drivers ioctl. 2004-09-24 07:24:02 +00:00
Poul-Henning Kamp
bd8a0d70f4 Remove devsw() call missed in last commit. 2004-09-24 07:08:33 +00:00
Poul-Henning Kamp
5ef8cac184 Use def_re[fl]thread().
Retire various old compatibility helpers.
2004-09-24 05:58:06 +00:00
Poul-Henning Kamp
1a52a73d68 Eliminate DEV_STRATEGY() macro: call dev_strategy() directly.
Make dev_strategy() handle errors and departing devices properly.
2004-09-23 14:45:04 +00:00
Poul-Henning Kamp
d0c90fe668 Do not use devsw() but si_devsw direction. This is still bogus but a
fair bit less so.
2004-09-23 12:19:24 +00:00
Poul-Henning Kamp
a0e78d2eb0 Do not refcount the cdevsw, but rather maintain a cdev->si_threadcount
of the number of threads which are inside whatever is behind the
cdevsw for this particular cdev.

Make the device mutex visible through dev_lock() and dev_unlock().
We may want finer granularity later.

Replace spechash_mtx use with dev_lock()/dev_unlock().
2004-09-23 07:17:41 +00:00
Poul-Henning Kamp
bc710003ac Pointy hat please!
Refuse VCHR not VREG.
2004-09-22 18:18:26 +00:00
Poul-Henning Kamp
a367987828 De support opening device nodes on CD9660 filesystems. They are
still visible, they can still be seen, but they cannot be opened.
Use DEVFS for that.
2004-09-21 08:42:37 +00:00
Poul-Henning Kamp
d705e025d0 The getpages VOP was a good stab at getting scatter/gather I/O without
too much kernel copying, but it is not the right way to do it, and it is
in the way for straightening out the buffer cache.

The right way is to pass the VM page array down through the struct
bio to the disk device driver and DMA directly in to/out off the
physical memory.  Once the VM/buf thing is sorted out it is next on
the list.

Retire most of vnode method. ffs_getpages().  It is not clear if what is
left shouldn't be in the default implementation which we now fall back to.

Retire specfs_getpages() as well, as it has no users now.
2004-09-19 08:14:55 +00:00
Poul-Henning Kamp
08dbd671ff Remove unused B_WRITEINPROG flag 2004-09-15 21:49:22 +00:00
Poul-Henning Kamp
883d3c0c07 Remove the buffercache/vnode side of BIO_DELETE processing in
preparation for integration of p4::phk_bufwork.  In the future,
local filesystems will talk to GEOM directly and they will consequently
be able to issue BIO_DELETE directly.  Since the removal of the fla
driver, BIO_DELETE has effectively been a no-op anyway.
2004-09-13 06:50:42 +00:00
Tim J. Robbins
d676af371d Reduce the size of struct defid's defid_dirclust, defid_dirofs and
(disabled) defid_gen members from u_long to u_int32_t so that alignment
requirements don't cause the structure to become larger than struct fid
on LP64 platforms. This fixes NFS exports of msdos filesystems on at
least amd64.

PR:		71173
2004-09-08 13:03:19 +00:00
Tim J. Robbins
6a5bf04a5b Merge from NetBSD:
Fix a problem in previous: we can't blindly assume that we have
wincnt entries available at the offset the file has been found. If the dos
directory entry is not preceded by appropriate number of long name
entries (happens e.g. when the filesystem is corrupted, or when
the filename complies to DOS rules and doesn't use any long name entry),
we would overwrite random directory entries.

There are still some problems, the whole thing has to be revisited and solved
right.

Submitted by:	Xin LI
2004-09-08 11:25:41 +00:00
Tim J. Robbins
d23af19a71 Merge from NetBSD:
Fix a panic that occurred when trying to traverse a corrupt msdosfs
filesystem.  With this particular corruption, the code in pcbmap()
would compute an offset into an array that was way out of bounds,
so check the bounds before trying to access and return an error if
the offset would be out of bounds.

Submitted by:	Xin LI
2004-09-08 10:57:09 +00:00
Poul-Henning Kamp
1affa3adc8 Create simple function init_va_filerev() for initializing a va_filerev
field.

Replace three instances of longhaired initialization va_filerev fields.

Added XXX comment wondering why we don't use random bits instead of
uptime of the system for this purpose.
2004-09-07 09:17:05 +00:00
Poul-Henning Kamp
066a8fea81 Explicitly pass vnode to smbfs_doio() function. 2004-09-07 08:53:28 +00:00
Poul-Henning Kamp
7ee3985c57 Explicitly pass the vnode to the nw_doio() function. 2004-09-07 08:53:03 +00:00
Tim J. Robbins
82c0aec8de Temporarily back out revision 1.77. This changed cd9660_getattr() and
cd9660_readdir() to return the address of the file's first data block as
the inode number instead of the address of the directory entry, but
neglected to update cd9660_vget_internal() for the new inode numbering
scheme.

Since the NFS server calls VFS_VGET (cd9660_vget()) with inode numbers
returned through VOP_READDIR (cd9660_readdir()) when servicing a READDIRPLUS
request, these two interfaces must agree on the numbering scheme; failure to
do so caused panics and/or bogus information about the entries to be returned
to clients using READDIRPLUS (Solaris, FreeBSD w/ mount -o rdirplus).

PR:		63446
2004-09-05 11:18:53 +00:00
Robert Watson
10b7196db4 Back out pseudo_vnops.c:1.45, which was a workaround for pfind()
returning incompletely initialized processes.  This problem was
eliminated by kern_proc.c:1.215, which causes pfind() not to
return processes in the PRS_NEW state.
2004-09-02 16:04:09 +00:00