Commit Graph

321 Commits

Author SHA1 Message Date
thorpej 29df848753 Need <string.h> for memcpy(3) prototype if building from userland. 1999-09-14 04:50:54 +00:00
augustss ada52e1f37 Add #include <sys/device.h> so this file compiles again. 1999-09-08 08:29:45 +00:00
sommerfeld c0411740d8 Avoid dereferencing NULL rootvp if booting diskless. 1999-09-08 03:45:22 +00:00
jdolecek 7dfaa17700 Adapt to cache_lookup() changes.
Tested by: jdolecek
Rewieved by: wrstuden
1999-09-05 14:26:32 +00:00
perseant c588aaf55f Make changes that will allow an LFS filesystem to be used as the root
filesystem.  In particular,

- Fix mknod deadlock, described in PR 8172.
- Enable lfs_mountroot.
- Make lfs_writevnodes treat filesystems mounted on lfs device nodes properly,
  by flushing that device rather than trying to add blocks to the device inode.

This, in combination with lfs boot blocks, will allow operation of an all-lfs
system.
1999-09-03 22:48:51 +00:00
wrstuden 169a5eda2d Pull in changes which parallel rev 1.22 -> 1.25 of ufs_lookup(). 1999-08-04 18:40:47 +00:00
wrstuden 45ce38544f Make the compiler happy.. 1999-08-04 18:40:06 +00:00
wrstuden 3598f580dc Fix tyop in previous. 1999-08-04 18:14:59 +00:00
wrstuden 1eeee9e04a Modify ISDOTDOT case so that we only clear PDIRUNLOCK if we really
re-lock the parent vnode.
1999-08-04 18:07:39 +00:00
wrstuden 3bf14d81e9 Add support for fcntl(2) to generate VOP_FCNTL calls. Any fcntl
call with F_FSCTL set and F_SETFL calls generate calls to a new
fileop fo_fcntl. Add genfs_fcntl() and soo_fcntl() which return 0
for F_SETFL and EOPNOTSUPP otherwise. Have all leaf filesystems
use genfs_fcntl().

Reviewed by: thorpej
Tested by: wrstuden
1999-08-03 20:19:16 +00:00
drochner 12a6593f79 clean up inclusion of "opt_ffs.h" and use of "FFS_EI" a bit 1999-08-03 19:22:43 +00:00
wrstuden 6dfc303f3b Add PDIRUNLOCK support. 1999-08-02 22:58:29 +00:00
mycroft 0900226864 Make one code path a bit clearer. 1999-07-30 01:55:38 +00:00
wrstuden 976aedb7ac Adjust mountroot routines to vrele rootvp in case of mount error. Closes
PR 7977 by Neil Carson, <neil@brini.com>.
1999-07-17 01:08:28 +00:00
wrstuden 379a26972f Modify file systems to deal with struct lock in struct vnode. All leaf
fs's other than nfs use genfs_lock() for locking.

Modify lookup routines to set PDIRUNLOCK when they unlock the parrent.
1999-07-08 01:05:58 +00:00
thorpej c7855f5009 Nuke unneeded include file. 1999-07-03 18:40:32 +00:00
tls 4d649c3adb squash some compiler warnings on debug printfs by casting to int 1999-06-17 22:22:41 +00:00
perseant a818a47169 Minor changes to the segment live bytes calculation. In particular, fixed
a bug in fragment extension that could run the count negative.  Also, don't
overcount for inodes, and don't count segment summaries.  Thus, for empty
segments the live bytes count should now be exactly zero.
1999-06-15 22:25:41 +00:00
drochner b121ed29dd complete the previous
reindent syscall args
1999-06-09 12:18:19 +00:00
christos e2b181b130 prefix the lfs syscalls with sys_ 1999-06-09 04:52:11 +00:00
bouyer 466d1747ff memset ump->um_e2fs to 0 after malloc, it is bigger than SBSIZE and thus some
parts were left uninitialised. The symptom was that a read-only mount tried
to rewrite back the superblock.
1999-06-01 13:18:49 +00:00
perseant 88207e0cba Fixed lfs_update (and related functions) so that calls from lfs_fsync
will DTRT with vnodes marked VDIROP.  In particular, the message
"flushing VDIROP" will no longer appear, and the filesystem will remain
stable in the event of a crash.

This was particularly a problem with NFS-exported LFSes, since fsync
was called on every file close.
1999-06-01 03:00:40 +00:00
scottr bdd60e98f9 Include opt_ddb.h so we will get the Debugger() prototype. 1999-05-04 00:35:37 +00:00
perseant 4427f80b15 Other half of the ufs_hashlock locking fix (oops) 1999-04-16 16:23:46 +00:00
perseant 2d12a2d41d Fix locking panic on ufs_hashlock 1999-04-16 00:41:58 +00:00
perseant 40458c9d34 Fix lost lock in lfs_markv -- a typo-class bug, obvious when you look at it. 1999-04-14 19:37:28 +00:00
perseant 40cebde457 Check the superblock version field, and refuse to mount the filesystem
if the version number is higher than we know about.  This allows, e.g.,
changes in the format of the ifile, segment size restrictions and boundaries,
etc., which would not affect existing fields in the superblock, but which
would drastically affect the filesystem, to be smoothly integrated at a
later date.
1999-04-12 00:47:17 +00:00
perseant 65ba757424 Improve the debugging printfs in the cleaner syscalls (in particular, make
it obvious that they're coming from lfs).
1999-04-12 00:40:06 +00:00
perseant 8d72b3204a Disallow threshold-initiated cache flush when dirops are active. Also, make
SET_ENDOP use lfs_check instead of inlining most of it.
1999-04-12 00:36:47 +00:00
perseant a520288478 Fix block counting during file truncation, if not truncating to zero. 1999-04-12 00:30:08 +00:00
perseant bffea14a3f Make sure that the wakeup occurs for vnodes that lfs_update might be sleeping
on (nodes which are not marked IN_MODIFIED/IN_CLEANING, but which have dirty
buffers), by marking them with the appropriate flag if dirtybuffers were added
while the write was in progress.
1999-04-12 00:25:13 +00:00
perseant e6b7726c9a Better checking for held inode locks in lfs_fastvget, for a number of error
conditions.  Also change the default setting of lfs_clean_vnhead to 0, which
seems to make the locking problems go away (although this is difficult to
test as I can't reliably reproduce them).
1999-04-12 00:11:01 +00:00
perseant 7221719dc7 Fix "lfs_ifind: dinode xxx not found" panic. When inodes were freed,
then immediately reloaded, their dinodes were located in an inode block
which was not on disk at the advertized location, nor in the cache (although
it would be flushed to disk next segment write).  Fix this by using getblk()
instead of lfs_newbuf() for inode blocks.
1999-04-12 00:04:21 +00:00
perseant 97c6743666 Fix inode reporting in lfs_statfs (the meaning of f_files and f_ffree was
reversed).
1999-04-11 23:58:17 +00:00
perseant d24ffa7077 Mark the current segment with SEGUSE_ACTIVE at mount time, rather than waiting
for the first write.  If this is not done, the cleaner may try to clean the
current segment out from under the writer if the filesystem is mounted after
a crash (or any other time that the dirty:clean segment ration is high enough).
1999-04-11 23:31:09 +00:00
perseant 6a87896854 Take out the `#ifdef USE_UFSHASH'; use ufs_hashlock to lock the inode free
list instead of free_lock.
1999-04-11 23:24:04 +00:00
perseant 46ae977773 Change the reference to "newlfs" in the CHANGES file to the correct "newfs_lfs" 1999-04-10 18:31:05 +00:00
mycroft 704563569f It was silly to not make this exportable. 1999-04-04 18:15:58 +00:00
mycroft 9e81cc5022 Fix obvious bugs:
* The MNT_UPDATE case had a null pointer dereference.  (This is a good example
  of why blindly adding bogus initializiers is a FUNDAMENTALLY BAD IDEA!)
* Make sure the whole ufsmount is zeroed, as the export code relies on this.
* If we decided to use the second/alternate superblock, make sure to copy the
  in-core version from the right buffer.
Also, reenable NFS exporting.
1999-04-04 09:56:44 +00:00
perseant 7ea5ec6723 Fix buffer handling problems in lfs_vinvalbuf 1999-04-01 23:28:09 +00:00
perseant 4158afaaf3 Add initialization to quell compiler warning (only on some platforms?) 1999-03-30 16:11:43 +00:00
perseant 322fef73ae Move variable initialization to the top of lfs_vflush 1999-03-30 16:03:16 +00:00
perseant 5589f33082 Fix unit mismatch in debugging code in lfs_segclean; also put it properly
within `#ifdef DEBUG_LFS'.
1999-03-29 22:13:07 +00:00
perseant 3e0bf5e0d8 Fix the other missing dirop wakeup 1999-03-29 21:54:26 +00:00
perseant f058684b7f lfs_truncate calls vinvalbuf to invalidate all currently-hald buffers, which
in turn forces a flush of the vnode, whether or not it is involved in a dirop.
(This can happen during a remove or rmdir, when the directory is shrunk.)
Because of the nature of dirops, however, flushing a vnode involved in a dirop
is disallowed (and was marked with a panic).  This patch has lfs_truncate
call a specialized vinvalbuf that only invalidates buffers following the new
end-of-file, and thus does not require a flush.  Also the panic is demoted,
in case I missed any other path to lfs_vflush.
1999-03-29 21:51:38 +00:00
perseant fbc5e63cd6 Make sysctl variable lfs_clean_vnhead do what it was supposed to do,
namely, toggle whether vnodes loaded only for cleaning (as opposed to
normal filesystem use) are freed to the *head* of the vnode free list,
rather than the tail.  This should avoid a possible cache flushing
effect, if the cleaner cleans a segment containing a large number of
live inodes.
1999-03-25 22:38:28 +00:00
perseant cffa290130 Since dirop vnodes can't be flushed, they hold a reference until their
dirop is completely written to disk.  This means that ordinary calls to
ufs vnops which would ordinarily call VOP_INACTIVE through vrele/vput,
don't.  This patch detects that condition after such vnops have been
run, and calls VOP_INACTIVE if it would ordinarily have been called by
the ufs call.
1999-03-25 22:33:03 +00:00
perseant a3748f1cc7 Fixes to make dirops and lfs_vflush play together well. In particular,
if we are short on vnodes, lfs_vflush from another process can grab a
vnode that lfs_markv has already processed but not yet written; but
lfs_markv holds the seglock.  When lfs_vflush gets around to writing it,
the context for copyin is gone.  So, now lfs_markv calls copyin itself,
rather than having lfs_writeseg do it.
1999-03-25 22:26:52 +00:00
perseant 6b51bdc17c Lock buffers with B_BUSY between data checksum calculation and write, so
some other process doesn't change the data after it was checksummed.
1999-03-25 22:02:36 +00:00
perseant 1cacaa295f Change lfs_sb_cksum to use offsetof() instead of an inlined version.
Fix lfs_vref/lfs_vunredf to ignore VXLOCKed vnodes that are also being
flushed.

Improve the debugging messages somewhat.
1999-03-25 21:54:10 +00:00