Commit Graph

264 Commits

Author SHA1 Message Date
dg
b7ad7fee08 For P_SUGID processes, we must also change ownership of the mem file
to root so that group kmem can still get to it. *SIGH*
1995-04-15 03:20:31 +00:00
dg
f3c66b4569 Retain group kmem readability for P_SUGID processes. 1995-04-15 02:50:13 +00:00
dg
719b4da2ee Made /proc/n/mem file group kmem and group readable. Needed to fix ps so
that it doesn't need to be setuid root.
1995-04-15 02:30:17 +00:00
ache
6fc35f489e Fix link sys call
Submitted by: pritc003@maroon.tc.umn.edu
1995-04-11 18:32:17 +00:00
bde
49bffa9247 Submitted by: Mike Pritchard <pritc003@maroon.tc.umn.edu>
Fix PR 303: msdosfs: moving a file into another directory causes panic.

" ... the code that does the rename already has the denode
locked when msdosfs_hashins() gets called, resulting in the panic
when the routine attempts to lock the denode again.
...
The attached patch changes the msdosfs_hashins() routine to not lock the
denode.  The caller is now resposible for obtaining the lock instead
of having msdosfs_hashins() do it for them."
1995-04-11 17:13:17 +00:00
bde
7f98df5944 Submitted by: Wolfgang Solfrank <ws@tools.de>
Fix off-by-1-sector error in the range checking for the end of the root
directory.  It was possible for the root directory to overwrite the FAT.
1995-04-11 16:43:20 +00:00
dg
b804a53282 Changes from John Dyson and myself:
Fixed remaining known bugs in the buffer IO and VM system.

vfs_bio.c:
Fixed some race conditions and locking bugs. Improved performance
by removing some (now) unnecessary code and fixing some broken
logic.
Fixed process accounting of # of FS outputs.
Properly handle NFS interrupts (B_EINTR).

(various)
Replaced calls to clrbuf() with calls to an optimized routine
called vfs_bio_clrbuf().

(various FS sync)
Sync out modified vnode_pager backed pages.

ffs_vnops.c:
Do two passes: Sync out file data first, then indirect blocks.

vm_fault.c:
Fixed deadly embrace caused by acquiring locks in the wrong order.

vnode_pager.c:
Changed to use buffer I/O system for writing out modified pages. This
should fix the problem with the modification date previous not getting
updated. Also dramatically simplifies the code. Note that this is
going to change in the future and be implemented via VOP_PUTPAGES().

vm_object.c:
Fixed a pile of bugs related to cleaning (vnode) objects. The performance
of vm_object_page_clean() is terrible when dealing with huge objects,
but this will change when we implement a binary tree to keep the object
pages sorted.

vm_pageout.c:
Fixed broken clustering of pageouts. Fixed race conditions and other
lockup style bugs in the scanning of pages. Improved performance.
1995-04-09 06:03:56 +00:00
ache
7182aee0af Fix timestamps when using Wall CMOS clock,
optimize dos2unixtime()
Submitted by: pritc003@maroon.tc.umn.edu
1995-03-29 18:48:06 +00:00
bde
4f64fe43e7 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) that I didn't notice when I fixed
"all" such warnings before.
1995-03-28 07:58:53 +00:00
phk
6ad7636d4a Readdir on a CDrom would return bogus "d_type" values, potentially confusing
everybody (incl find(1) ?).  Initialize it to DT_UNKNOWN.  Maybe we can
do better, but I don't have the time.
1995-03-28 07:46:38 +00:00
dg
9cd78521d8 Removed redundant newlines that were in some panic strings. 1995-03-19 14:29:26 +00:00
dg
b556b80a98 Removed bogus, commented out, call to vnode_pager_uncache(). 1995-03-19 12:11:13 +00:00
wollman
8e37e9f479 Add four more filesystem flags:
VFCF_NETWORK (this FS goes over the net)
	VFCF_READONLY (read-write mounts do not make any sense)
	VFCF_SYNTHETIC (data in this FS is not real)
	VFCF_LOOPBACK (this FS aliases something else)

cd9660 is readonly; nullfs, umapfs, and union are loopback; NFS is netowkr;
procfs, kernfs, and fdesc are synthetic.
1995-03-16 20:23:48 +00:00
bde
289f11acb4 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) and most of the warnings from
`gcc -Wnested-externs'.  Fix all the bugs found.  There were no serious
ones.
1995-03-16 18:17:34 +00:00
bde
69d7415f4f Obtained from: memories of 1.1.5
Fix the sign of the timezone offset again.
1995-02-21 18:41:30 +00:00
dg
127fed2efa Make sure process isn't swapped when messing with it.
Added missing newline to log() call.
1995-02-20 15:53:33 +00:00
phk
eb7832a7dc YFfix 1995-02-14 06:31:13 +00:00
phk
a737ead885 strategy for block and char devices are rightfully spec_strategy.
I feel like yanking all the "ISODEVMAP" stuff altogether, it looks
like a bad kludge...
1995-02-13 06:12:32 +00:00
bde
24a94d2bcd Use the correct block number for updating the backup copy of the FAT when
deleting a file.  Deleting a large file used to scramble the backup copy.
1995-02-10 18:39:45 +00:00
dg
8bb9dc4a89 Fixed bmap run-length brokeness.
Use bmap run-length extension when doing clustered paging.

Submitted by:	John Dyson
1995-02-03 06:46:28 +00:00
ats
dc666a09a5 Kill the comment in a comment to shut up the compiler. 1995-01-29 01:27:58 +00:00
joerg
21c4534499 Roll in my changes to make the cd9660 code understand the older
(original "High Sierra") CD format.  I've already implemented this for
1.1.5.1 (and posted to -hackers), but didn't get any response to it.
Perhaps i'm the only one who has such an old CD lying around...

Everything is done empirically, but i had three of them around (from
different vendors), so there's a high probability that i've got it
right. :)
1995-01-16 17:03:29 +00:00
dg
1707d41102 These changes embody the support of the fully coherent merged VM buffer cache,
much higher filesystem I/O performance, and much better paging performance. It
represents the culmination of over 6 months of R&D.

The majority of the merged VM/cache work is by John Dyson.

The following highlights the most significant changes. Additionally, there are
(mostly minor) changes to the various filesystem modules (nfs, msdosfs, etc) to
support the new VM/buffer scheme.

vfs_bio.c:
Significant rewrite of most of vfs_bio to support the merged VM buffer cache
scheme.  The scheme is almost fully compatible with the old filesystem
interface.  Significant improvement in the number of opportunities for write
clustering.

vfs_cluster.c, vfs_subr.c
Upgrade and performance enhancements in vfs layer code to support merged
VM/buffer cache.  Fixup of vfs_cluster to eliminate the bogus pagemove stuff.

vm_object.c:
Yet more improvements in the collapse code.  Elimination of some windows that
can cause list corruption.

vm_pageout.c:
Fixed it, it really works better now.  Somehow in 2.0, some "enhancements"
broke the code.  This code has been reworked from the ground-up.

vm_fault.c, vm_page.c, pmap.c, vm_object.c
Support for small-block filesystems with merged VM/buffer cache scheme.

pmap.c vm_map.c
Dynamic kernel VM size, now we dont have to pre-allocate excessive numbers of
kernel PTs.

vm_glue.c
Much simpler and more effective swapping code.  No more gratuitous swapping.

proc.h
Fixed the problem that the p_lock flag was not being cleared on a fork.

swap_pager.c, vnode_pager.c
Removal of old vfs_bio cruft to support the past pseudo-coherency.  Now the
code doesn't need it anymore.

machdep.c
Changes to better support the parameter values for the merged VM/buffer cache
scheme.

machdep.c, kern_exec.c, vm_glue.c
Implemented a seperate submap for temporary exec string space and another one
to contain process upages. This eliminates all map fragmentation problems
that previously existed.

ffs_inode.c, ufs_inode.c, ufs_readwrite.c
Changes for merged VM/buffer cache.  Add "bypass" support for sneaking in on
busy buffers.

Submitted by:	John Dyson and David Greenman
1995-01-09 16:06:02 +00:00
dg
6272368331 Initialize map start hint to vm_map_find()...not doing so will cause it
to fail if the random thing on the stack happens to be too large.

Submitted by:	David Jones <dej@qpoint.torfree.net>
1995-01-05 03:59:38 +00:00
ache
15cd9ece1a Fix problem when attached process detached
Submitted by: Gary Jennejohn
1994-12-31 12:26:50 +00:00
bde
1587b568dd Fix panic for `cp -p' by root to an msdos file system. Improve handling
of attributes so that `cp -p' to an msdos file system can succeed under
favourable circumstances (no uid or gid changes and no nonzero flags
except SF_ARCHIVED).

msdosfs_vnops.c:
The in-core inode flags were confused with the on-disk inode flags, so
chflags() clobbered the lock flag and caused a panic.

denode.h, msdosfs_denode.c, msdosfs_vnops.c:
Support the msdosfs archive attibute (ATTR_ARCHIVE) by mapping it to
the complement of the SF_ARCHIVED flag and setting the ATTR_ARCHIVE
bit when a file's modification time is set (but not when a file's
permissions are set; this is the standard wrong DOS behaviour).

denode.h, msdosfs_denode.c:
Remove the DE_UPDAT() macro.  It was only used once, and the corresponding
macro in ufs has already been removed.

denode.h:
Don't change the timestamp for directories in DE_TIMES() (be consistent
with deupdat()).

msdosfs_vnops.c:
Handle chown() better: return EPERM instead of EINVAL if there are
insufficient permissions; otherwise, allow null changes.
1994-12-27 12:37:36 +00:00
bde
e62de5875e Fix numerous timestamp bugs.
DE_UPDATE was confused with DE_MODIFIED in some places (they do have
confusing names).  Handle them exactly the same as IN_UPDATE and
IN_MODIFIED.  This fixes chmod() and chown() clobbering the mtime
and other bugs.

DE_MODIFIED was set but not used.

Parenthesize macro args.

DE_TIMES() now takes a timeval arg instead of a timespec arg.  It was
stupid to use a macro for speed and do unused conversions to prepare
for the macro.

Restore the left shifting of the DOS seconds count by 1.  It got
lost among the shifts for the bitfields, so DOS seconds counts
appeared to range from 0 to 29 seconds (step 1) instead of 0 to 58
seconds (step 2).

Actually use the passed-in mtime in deupdat() as documented so that
utimes() works.

Change `extern __inline's to `static inline's so that msdosfs_fat.o
can be linked when it is compiled without -O.

Remove faking of directory mtimes to always be the current time.  It's
more surprising for directory mtimes to change when you read the
directories than for them not to change when you write the directories.
This should be controlled by a mount-time option if at all.
1994-12-12 12:35:50 +00:00
ache
ccc6ee52e9 Restore mv check, cause panic without it
Submitted by: Ade Barkah
1994-11-29 23:39:15 +00:00
bde
f2dfc1d8f0 Undo a previous change. <sys/disklabel.h> was broken, not these files. 1994-11-14 13:22:52 +00:00
bde
e7c6a4d349 Remove the bogus include of <sys/dkbad.h>. 1994-11-14 07:01:58 +00:00
dg
e5d78dd23f From tim@cs.city.ac.uk (Tim Wilkinson):
Find enclosed a short bugfix to get the union filesystem up and running
in FreeBSD-current.  We don't think we've got all the problems yet but
these fixes sort out the major ones (which mostly concert bad locking
of vnodes), no doubt we'll post others as necessary.  Known problems
include the inability of the umount command (not the system call) to unmount
unions in certain circumstances (this is due the way "realpath" works),
and the failure of direntries to always get all available files in
unioned subdirectories.  We are, as they say, working on it.

Submitted by:	tim@cs.city.ac.uk (Tim Wilkinson)
1994-11-04 14:41:46 +00:00
jkh
1ea7c62e83 Fix from John Hay to avoid kernel panics when ap->a_eofflag is NULL.
I'm not sure if this is just masking another problem (like, should
ap->a_eofflag EVER be NULL?), but if it prevents a panic for now then
it may save an ALPHA customer.
Submitted by:	jhay
1994-11-01 21:14:45 +00:00
jkh
076633a669 From: fredriks@mcs.com (Lars Fredriksen)
...
It turns out that these files do not include <sys/dkbad.h> before
<sys/disklabel.h>.
Submitted by:	fredriks
1994-10-28 12:42:05 +00:00
pst
741eddd9e6 Set the EOF flag properly.
Obtained from: netbsd-bugs mailing list
1994-10-27 18:44:31 +00:00
martin
63e85e7c86 Fixed panic when unmounting floppy msdos filesystems. Problem was
we weren't flushing dirty buffers. Fix stolen from ffs_fsync()
1994-10-23 00:41:17 +00:00
dg
3826d4d70e Fixed bug I just introduced that would have allowed a user to clobber
his kernel stack.
1994-10-18 04:40:41 +00:00
dg
57a3f6cf30 Allow upages to be paged in/accessed.
Submitted by:	John Dyson
1994-10-18 04:26:53 +00:00
phk
250cc1ae23 Cosmetics. Silence gcc -Wall 1994-10-10 07:57:33 +00:00
phk
c0f48e68d2 Cosmetics. reduce the noise from gcc -Wall. 1994-10-10 07:55:48 +00:00
phk
ec6c0e6ca7 Cosmetics: added a #include and a static prototype to silence gcc. 1994-10-08 22:37:00 +00:00
dg
2add6128e2 Use tsleep() rather than sleep so that 'ps' is more informative about
the wait.
1994-10-06 21:07:04 +00:00
phk
f3c1ed2327 GCC cleanup.
Reviewed by:
Submitted by:
Obtained from:
1994-10-02 17:48:58 +00:00
dfr
57b6c0c34c Make NFS ask the filesystems for directory cookies instead of making them
itself.
1994-09-28 16:45:22 +00:00
phk
77843a901a Added declarations, fixed bugs due to missing decls. At least one of them
could panic a system. (I know, it paniced mine!).
1994-09-27 20:42:59 +00:00
gpalmer
bbe71d3b98 Alterations to silence gcc -Wall. Some unused variables deleted.
Reviewed by:	davidg
1994-09-26 00:32:59 +00:00
dg
c60a583f86 1) Added "." and ".." entries.
2) Fixed directory size to return something reasonable.
3) Disabled "file" until the code is completed.
4) Corrected directory link counts.
1994-09-24 17:01:05 +00:00
dg
742b4e9e37 Include <sys/kernel.h> not <kernel.h> 1994-09-23 11:01:58 +00:00
wollman
900d29807d More loadable VFS changes:
- Make a number of filesystems work again when they are statically compiled
  (blush)

- FIFOs are no longer optional; ``options FIFO'' removed from distributed
  config files.
1994-09-22 19:38:41 +00:00
wollman
8c2367ad38 Fix a few niggling little bugs:
- set args->lkm_offset correctly so that VFS modules can be unloaded
- initialize _fs_vfsops.vfc_refcount correctly so that VFS modules can
  be unloaded
- include kernel.h in a few placves to get the correct definition of DATA_SET
1994-09-21 23:22:52 +00:00
wollman
c289ac89a1 Implemented loadable VFS modules, and made most existing filesystems
loadable.  (NFS is a notable exception.)
1994-09-21 03:47:43 +00:00
dfr
355abe59df Changed some NetBSD backwards compatibility code which was confusing mountd. 1994-09-19 19:24:44 +00:00
dfr
7efbb964fd Added msdosfs.
Obtained from: NetBSD
1994-09-19 15:41:57 +00:00
bde
9400f03fed Supply prototypes for some functions that were implicitly declared and
fix the resulting warnings.
1994-09-15 19:47:47 +00:00
bde
1bfaf25b30 Obtained from:
Remove the unnecessary inclusion of disklabel.h in cd9660_vfsops.c so
that I don't have to worry about the latter when changing disklabel.h.

Supply prototypes for some functions that were implicitly declared and
fix the resulting warnings and errors (timevals were punned to timespecs).
1994-09-15 19:46:03 +00:00
dg
0d2e67cf3e Relaxed panic in fdesc_setattr() to just return error. 1994-09-09 13:24:26 +00:00
dg
d3296d0014 Fixed off by one error in referencing an array.
Stolen from:	NetBSD
1994-09-09 13:23:20 +00:00
dfr
8e7267d0ad Fixed some confusion between the size of a logical block and the size of a
device block which was stopping symbolic links working.

cd9660_readdir was incorrectly casting a pointer to the d_namlen field of a
struct dirent to a (u_short*) which caused the directory entries "." and ".."
to read incorrectly.

Submitted by:	dfr
1994-09-09 11:11:01 +00:00
dg
f817326b2e Implemented filesystem clean bit via:
machdep.c:
	Changed printf's a little and call vfs_unmountall() if the sync was
	successful.

cd9660_vfsops.c, ffs_vfsops.c, nfs_vfsops.c, lfs_vfsops.c:
	Allow dismount of root FS. It is now disallowed at a higher level.

vfs_conf.c:
	Removed unused rootfs global.

vfs_subr.c:
	Added new routines vfs_unmountall and vfs_unmountroot. Filesystems
	are now dismounted if the machine is properly rebooted.

ffs_vfsops.c:
	Toggle clean bit at the appropriate places. Print warning if an
	unclean FS is mounted.

ffs_vfsops.c, lfs_vfsops.c:
	Fix bug in selecting proper flags for VOP_CLOSE().

vfs_syscalls.c:
	Disallow dismounting root FS via umount syscall.
1994-08-20 16:03:26 +00:00
dg
c97639b923 1) cleaned up after Garrett - fixed more redundant declarations, changed
use of timeout_t -> timeout_func_t in aha1542 and aha1742 drivers.
2) fix a bug in the portalfs that was uncovered by better prototyping -
   specifically, the time must be converted from timeval to timespec
   before storing in va_atime.
3) fixed/added some miscellaneous prototypes
1994-08-20 03:49:02 +00:00
wollman
f9fc827448 Fix up some sloppy coding practices:
- Delete redundant declarations.
- Add -Wredundant-declarations to Makefile.i386 so they don't come back.
- Delete sloppy COMMON-style declarations of uninitialized data in
  header files.
- Add a few prototypes.
- Clean up warnings resulting from the above.

NB: ioconf.c will still generate a redundant-declaration warning, which
is unavoidable unless somebody volunteers to make `config' smarter.
1994-08-18 22:36:09 +00:00
dg
a5f60ab1cf Changed B_AGE policy to work correctly in a world with relatively large
buffer caches. The old policy generally ended up caching nothing.
1994-08-08 09:11:44 +00:00
dg
8d205697aa Added $Id$ 1994-08-02 07:55:43 +00:00
rgrimes
2469c867a1 The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.
Reviewed by:	Rodney W. Grimes
Submitted by:	John Dyson and David Greenman
1994-05-25 09:21:21 +00:00
rgrimes
27464aaa8e BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00