Commit Graph

212 Commits

Author SHA1 Message Date
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
Bruce Evans
b9b652d2f6 Support filesystems with the not-so-new "filetype" feature. This
feature gives the d_type field for struct dirent.  We used to panic
in ext2_readdir() for filesystems with this feature.
2000-01-05 19:31:26 +00:00
Bruce Evans
6291b96b03 Don't allow mounting (or mounting R/W) of filesystems with unsupported
features (except for file types in directory entries, which will be
supported soon).

Centralized the magic number and compatibility checking.

Dropped support for ancient (pre-0.2b) filesystems, as in the Linux
version.  Our "support" consisted of printing more details in the error
message before failing at mount time.
2000-01-02 17:40:02 +00:00
Bruce Evans
d68084cd89 Merged changes in ext2_fs.h between Linux 1.2.2 and Linux 2.3.35. The
main changes are:
- many things are more dynamic; e.g., the inode size is a new parameter
  in the superblock instead of a constant.
- extensions are controlled by new flags in the superblock.
- directory entries may have a file type field.
These changes are not used yet, except for a spelling change which affects
ext2_cnv.c
2000-01-01 17:39:21 +00:00
Bruce Evans
c9fbb5bc2c Merged cosmetic changes from the initial import on the vendor branch
(mainly things that were lost or misformatted in a different way by
moving them to ext2_fs_i.h and back, and ifdefs for user mode that
were excessively edited).
2000-01-01 16:26:43 +00:00
Bruce Evans
8e19715af3 Use an ifdef in ext2_fs.h instead of a bogus separate file (ext2_fs_i.h)
to avoid the namespace problems caused by <ufs/ufs/inode.h> #defining
i_mode, etc.

ext2_fs_i.h had nothing to do with the Linux version.  It was a small
part of the Linux version of ext2_fs.h (the part that declares extra
in-core fields for an inode).  We don't need it because we use the
ufs in-core inode for the extra fields.
2000-01-01 14:43:20 +00:00
Bruce Evans
5c8b462df8 Updated/corrected the list of GPL'ed files. 2000-01-01 11:27:50 +00:00
Bruce Evans
0b1dd186eb This file is not used directly. The small parts of it that are used were
merged into ext2_vfsops.c in rev.1.1.  This broke both merging from the
vendor branch and the non-GPL'ed-ness of ext2_vfsops.c.
2000-01-01 11:17:28 +00:00
Bruce Evans
33891a9f1a This file is not used directly. It was merged into ext2_linux_balloc.c
in rev.1.1.
2000-01-01 11:11:13 +00:00
Bruce Evans
c15ee3ea23 This commit was generated by cvs2svn to compensate for changes in r55289,
which included commits to RCS files with non-trunk default branches.
2000-01-01 11:05:19 +00:00
Bruce Evans
6969f4fedf Import the Linux ext2fs files that our GPL'ed ext2fs files seem to be
based on.

Obtained from:	Linux 1.2.2 distribution
2000-01-01 11:05:19 +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
Robert Watson
91f37dcba1 Second pass commit to introduce new ACL and Extended Attribute system
calls, vnops, vfsops, both in /kern, and to individual file systems that
require a vfsop_ array entry.

Reviewed by:	eivind
1999-12-19 06:08:07 +00:00
Eivind Eklund
762e6b856c Introduce NDFREE (and remove VOP_ABORTOP) 1999-12-15 23:02:35 +00:00
Poul-Henning Kamp
0429e37ade struct mountlist and struct mount.mnt_list have no business being
a CIRCLEQ.  Change them to TAILQ_HEAD and TAILQ_ENTRY respectively.

This removes ugly  mp != (void*)&mountlist  comparisons.

Requested by:   phk
Submitted by:   Jake Burkholder jake@checker.org
PR:             14967
1999-11-20 10:00:46 +00:00
David E. O'Brien
594017f90d Fix __asm__ clobber list abuse.
Submitted by:	bde
1999-11-15 23:16:06 +00:00
Eivind Eklund
dd8c04f4c7 Remove WILLRELE from VOP_SYMLINK
Note: Previous commit to these files (except coda_vnops and devfs_vnops)
that claimed to remove WILLRELE from VOP_RENAME actually removed it from
VOP_MKNOD.
1999-11-13 20:58:17 +00:00
Eivind Eklund
edfe736df9 Remove WILLRELE from VOP_RENAME 1999-11-12 03:34:28 +00:00
Poul-Henning Kamp
698f9cf828 Next step in the device cleanup process.
Correctly lock vnodes when calling VOP_OPEN() from filesystem mount code.

Unify spec_open() for bdev and cdev cases.

Remove the disabled bdev specific read/write code.
1999-11-09 14:15:33 +00:00
Bruce Evans
5bd5c8b9e5 Quick fix for breakage of ext2fs link counts as reported by stat(2) by
the soft updates changes: only report the link count to be i_effnlink
in ufs_getattr() for file systems that maintain i_effnlink.

Tested by:	Mike Dracopoulos <mdraco@math.uoa.gr>
1999-11-03 12:05:39 +00:00
Mike Smith
6d14782861 Newline-terminate the complaint message about not being able to find
the root vnode pointer.
1999-11-01 23:57:28 +00:00
Poul-Henning Kamp
b89392e703 Remove the D_NOCLUSTER[RW] options which were added because vn had
problems.  Now that Matt has fixed vn, this can go.  The vn driver
should have used d_maxio (now si_iosize_max) anyway.
1999-09-30 07:11:30 +00:00
Poul-Henning Kamp
1b5464ef9d Remove v_maxio from struct vnode.
Replace it with mnt_iosize_max in struct mount.

Nits from:	bde
1999-09-29 20:05:33 +00:00
Matthew Dillon
67ddfcaf69 More removals of vnode->v_lastr, replaced by preexisting seqcount
heuristic to detect sequential operation.

    VM-related forced clustering code removed from ufs in preparation for a
    commit to vm/vm_fault.c that does it more generally.

Reviewed by: David Greenman <dg@root.com>, Alan Cox <alc@cs.rice.edu>
1999-09-20 23:27:58 +00:00
Poul-Henning Kamp
faad302913 Fix a harmless bug I introduced, simplify a bit more while here. 1999-09-20 21:14:43 +00:00
Poul-Henning Kamp
fae03f66d1 Step one of replacing devsw->d_maxio with si_bsize_max.
Rename dev->si_bsize_max to si_iosize_max and set it in spec_open
if the device didn't.

Set vp->v_maxio from dev->si_bsize_max in spec_open rather than
in ufs_bmap.c
1999-09-20 19:57:28 +00:00
Alfred Perlstein
c24fda81c9 Seperate the export check in VFS_FHTOVP, exports are now checked via
VFS_CHECKEXP.

Add fh(open|stat|stafs) syscalls to allow userland to query filesystems
based on (network) filehandle.

Obtained from:	NetBSD
1999-09-11 00:46:08 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Poul-Henning Kamp
41d2e3e09e Introduce vn_isdisk(struct vnode *vp) function, and use it to test for diskness. 1999-08-25 12:24:39 +00:00
Bruce Evans
feb54dc506 Oops, the previous commit was missing a new include. 1999-08-23 22:05:49 +00:00
Bruce Evans
939cb7521a Initialise fsids with (user) device numbers again. Bitrot when dev_t's
were changed to pointers was obscured by casting dev_t's to longs.
fsids haven't even been comprised of longs since the Lite2 merge.
1999-08-23 21:07:13 +00:00
Bruce Evans
d918320517 Use devtoname() to print dev_t's instead of casting them to long or u_long
for misprinting in %lx format.
1999-08-23 20:35:21 +00:00
Poul-Henning Kamp
7dc5cd047f The bdevsw() and cdevsw() are now identical, so kill the former. 1999-08-13 10:29:38 +00:00
Poul-Henning Kamp
0ef1c82630 Decommision miscfs/specfs/specdev.h. Most of it goes into <sys/conf.h>,
a few lines into <sys/vnode.h>.

Add a few fields to struct specinfo, paving the way for the fun part.
1999-08-08 18:43:05 +00:00
Bruce Evans
2ac6e74655 Don't set IN_ACCESS for requests to read 0 bytes or for unsuccessful reads.
Translated from: similar fixes in ufs_readwrite.c rev.1.61.  Things
are simpler (but annoyingly different) here because there are no
vm optimisations.
1999-07-25 02:56:17 +00:00
Kirk McKusick
4dc0c8f521 Create the macro DOINGASYNC to check whether the MNT_ASYNC flag has
been set for a mount point. Insert missing checks to ensure that all
write operations are done asynchronously when the MNT_ASYNC option
has been requested.

Submitted by:	Craig A Soules <soules+@andrew.cmu.edu>
Reviewed by:	Kirk McKusick <mckusick@mckusick.com>
1999-07-13 18:20:13 +00:00
Kirk McKusick
67812eacd7 Convert buffer locking from using the B_BUSY and B_WANTED flags to using
lockmgr locks. This commit should be functionally equivalent to the old
semantics. That is, all buffer locking is done with LK_EXCLUSIVE
requests. Changes to take advantage of LK_SHARED and LK_RECURSIVE will
be done in future commits.
1999-06-26 02:47:16 +00:00
Kirk McKusick
f9c8cab591 Add a vnode argument to VOP_BWRITE to get rid of the last vnode
operator special case. Delete special case code from vnode_if.sh,
vnode_if.src, umap_vnops.c, and null_vnops.c.
1999-06-16 23:27:55 +00:00
Poul-Henning Kamp
2447bec829 Simplify cdevsw registration.
The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it.  cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.

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

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

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

Bump __FreeBSD_version to 400006

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

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

I4b and vinum not changed.  Patches emailed to authors.  LINT
probably broken until they catch up.
1999-05-31 11:29:30 +00:00
Bruce Evans
22b6b1cd1e Fixed printing of a dev_t in a panic message. Fixed the function name
in this message.
1999-05-13 06:27:51 +00:00
Poul-Henning Kamp
bfbb9ce670 Divorce "dev_t" from the "major|minor" bitmap, which is now called
udev_t in the kernel but still called dev_t in userland.

Provide functions to manipulate both types:
        major()         umajor()
        minor()         uminor()
        makedev()       umakedev()
        dev2udev()      udev2dev()

For now they're functions, they will become in-line functions
after one of the next two steps in this process.

Return major/minor/makedev to macro-hood for userland.

Register a name in cdevsw[] for the "filedescriptor" driver.

In the kernel the udev_t appears in places where we have the
major/minor number combination, (ie: a potential device: we
may not have the driver nor the device), like in inodes, vattr,
cdevsw registration and so on, whereas the dev_t appears where
we carry around a reference to a actual device.

In the future the cdevsw and the aliased-from vnode will be hung
directly from the dev_t, along with up to two softc pointers for
the device driver and a few houskeeping bits.  This will essentially
replace the current "alias" check code (same buck, bigger bang).

A little stunt has been provided to try to catch places where the
wrong type is being used (dev_t vs udev_t), if you see something
not working, #undef DEVT_FASCIST in kern/kern_conf.c and see if
it makes a difference.  If it does, please try to track it down
(many hands make light work) or at least try to reproduce it
as simply as possible, and describe how to do that.

Without DEVT_FASCIST I belive this patch is a no-op.

Stylistic/posixoid comments about the userland view of the <sys/*.h>
files welcome now, from userland they now contain the end result.

Next planned step: make all dev_t's refer to the same devsw[] which
means convert BLK's to CHR's at the perimeter of the vnodes and
other places where they enter the game (bootdev, mknod, sysctl).
1999-05-11 19:55:07 +00:00
Poul-Henning Kamp
4be2eb8c49 I got tired of seeing all the cdevsw[major(foo)] all over the place.
Made a new (inline) function devsw(dev_t dev) and substituted it.

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

DEVFS will eventually benefit from this change too.
1999-05-08 06:40:31 +00:00
Poul-Henning Kamp
46eede0058 Continue where Julian left off in July 1998:
Virtualize bdevsw[] from cdevsw.  bdevsw() is now an (inline)
        function.

        Join CDEV_MODULE and BDEV_MODULE to DEV_MODULE (please pay attention
        to the order of the cmaj/bmaj arguments!)

        Join CDEV_DRIVER_MODULE and BDEV_DRIVER_MODULE to DEV_DRIVER_MODULE
        (ditto!)

(Next step will be to convert all bdev dev_t's to cdev dev_t's
before they get to do any damage^H^H^H^H^H^Hwork in the kernel.)
1999-05-07 10:11:40 +00:00
Alan Cox
4221e284a3 The VFS/BIO subsystem contained a number of hacks in order to optimize
piecemeal, middle-of-file writes for NFS.  These hacks have caused no
end of trouble, especially when combined with mmap().  I've removed
them.  Instead, NFS will issue a read-before-write to fully
instantiate the struct buf containing the write.  NFS does, however,
optimize piecemeal appends to files.  For most common file operations,
you will not notice the difference.  The sole remaining fragment in
the VFS/BIO system is b_dirtyoff/end, which NFS uses to avoid cache
coherency issues with read-merge-write style operations.  NFS also
optimizes the write-covers-entire-buffer case by avoiding the
read-before-write.  There is quite a bit of room for further
optimization in these areas.

The VM system marks pages fully-valid (AKA vm_page_t->valid =
VM_PAGE_BITS_ALL) in several places, most noteably in vm_fault.  This
is not correct operation.  The vm_pager_get_pages() code is now
responsible for marking VM pages all-valid.  A number of VM helper
routines have been added to aid in zeroing-out the invalid portions of
a VM page prior to the page being marked all-valid.  This operation is
necessary to properly support mmap().  The zeroing occurs most often
when dealing with file-EOF situations.  Several bugs have been fixed
in the NFS subsystem, including bits handling file and directory EOF
situations and buf->b_flags consistancy issues relating to clearing
B_ERROR & B_INVAL, and handling B_DONE.

getblk() and allocbuf() have been rewritten.  B_CACHE operation is now
formally defined in comments and more straightforward in
implementation.  B_CACHE for VMIO buffers is based on the validity of
the backing store.  B_CACHE for non-VMIO buffers is based simply on
whether the buffer is B_INVAL or not (B_CACHE set if B_INVAL clear,
and vise-versa).  biodone() is now responsible for setting B_CACHE
when a successful read completes.  B_CACHE is also set when a bdwrite()
is initiated and when a bwrite() is initiated.  VFS VOP_BWRITE
routines (there are only two - nfs_bwrite() and bwrite()) are now
expected to set B_CACHE.  This means that bowrite() and bawrite() also
set B_CACHE indirectly.

There are a number of places in the code which were previously using
buf->b_bufsize (which is DEV_BSIZE aligned) when they should have
been using buf->b_bcount.  These have been fixed.  getblk() now clears
B_DONE on return because the rest of the system is so bad about
dealing with B_DONE.

Major fixes to NFS/TCP have been made.  A server-side bug could cause
requests to be lost by the server due to nfs_realign() overwriting
other rpc's in the same TCP mbuf chain.  The server's kernel must be
recompiled to get the benefit of the fixes.

Submitted by:	Matthew Dillon <dillon@apollo.backplane.com>
1999-05-02 23:57:16 +00:00
Poul-Henning Kamp
75c1354190 This Implements the mumbled about "Jail" feature.
This is a seriously beefed up chroot kind of thing.  The process
is jailed along the same lines as a chroot does it, but with
additional tough restrictions imposed on what the superuser can do.

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

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

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

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

A few notes:

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

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

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

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

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

   There are no privisions for stopping resource-hogging.

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

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

Tools, comments, patches & documentation most welcome.

Have fun...

Sponsored by:   http://www.rndassociates.com/
Run for almost a year by:       http://www.servetheweb.com/
1999-04-28 11:38:52 +00:00
Poul-Henning Kamp
f711d546d2 Suser() simplification:
1:
  s/suser/suser_xxx/

2:
  Add new function: suser(struct proc *), prototyped in <sys/proc.h>.

3:
  s/suser_xxx(\([a-zA-Z0-9_]*\)->p_ucred, \&\1->p_acflag)/suser(\1)/

The remaining suser_xxx() calls will be scrutinized and dealt with
later.

There may be some unneeded #include <sys/cred.h>, but they are left
as an exercise for Bruce.

More changes to the suser() API will come along with the "jail" code.
1999-04-27 11:18:52 +00:00
Bruce Evans
44f332052d Don't depend on <ufs/ufs/quota.h> or another (old) prerequisite including
<sys/queue.h>.  This fixes my recent breakage of biosboot by unpolluting
<ufs/ufs/quota.h> in the !KERNEL case.
1999-03-06 05:21:09 +00:00
Warner Losh
5369eb85ca Merge patch to ufs_vnops.c's ufs_rename to the copy of ufs_rename that
lives in ext2_vnops.c for ext2fs.  Also remove cast from comparision.
Bruce pointed out that it was bogus since we'd force a signed
comparision when we really wanted an unsigned comparison.
1999-03-02 05:31:47 +00:00
Bruce Evans
a5c9bce777 Added a used #include (don't depend on "vnode_if.h" including <sys/buf.h>). 1999-02-25 15:54:06 +00:00
Bruce Evans
ae4d334421 Fixed parenthesization botch in previous commit. Async update of inodes
was broken.
1999-01-29 15:36:05 +00:00