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47 Commits

Author SHA1 Message Date
jdolecek 16b1272b3f Add new 'stat' fileop and call the stat function via f_ops rather 
than directly.
For compat syscalls, also add necessary FILE_USE()/FILE_UNUSE().
Now that soo_stat() gets a proc arg, pass it on to usrreq function.
 2001-04-07 09:00:57 +00:00
chs 83d071a318 add UBC memory-usage balancing. we track the number of pages in use for 
each of the basic types (anonymous data, executable image, cached files)
and prevent the pagedaemon from reusing a given page if that would reduce
the count of that type of page below a sysctl-setable minimum threshold.
the thresholds are controlled via three new sysctl tunables:
vm.anonmin, vm.vnodemin, and vm.vtextmin.  these tunables are the
percentages of pageable memory reserved for each usage, and we do not allow
the sum of the minimums to be more than 95% so that there's always some
memory that can be reused.
 2001-03-09 01:02:10 +00:00
chs aeda8d3b77 Initial integration of the Unified Buffer Cache project. 2000-11-27 08:39:39 +00:00
sommerfeld 861fcc44b7 Use ltsleep(...,PNORELOCK..) instead of simple_unlock()/tsleep() 2000-08-12 16:43:00 +00:00
mrg 32aa199ccf remove include of <vm/vm.h> 2000-06-27 17:41:07 +00:00
chs a6d33cc1f2 add a new function vn_marktext() for exec code to let others know 
that the vnode is now being used as process text.
 2000-04-11 04:37:47 +00:00
augustss 264f1d27c6 Get rid of register declarations. 2000-03-30 09:27:11 +00:00
simonb 6fa443065b Delete redundant decl of union_vnodeop_p, it's in <miscfs/union/union.h>. 2000-03-30 02:15:09 +00:00
fvdl fe39281ea4 Fixes to the softdep code from Ethan Solomita <ethan@geocast.com>. 
* Fix buffer ordering when it has dependencies.
* Alleviate memory problems.
* Deal with some recursive vnode locks (sigh).
* Fix other bugs.
 2000-02-14 22:00:21 +00:00
bouyer 051211ffa9 Add a new flag, used by vn_open() which prevent symlinks from being followed 
at open time. Use this to prevent coredump to follow symlinks when the
kernel opens/creates the file.
 1999-08-31 12:30:35 +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
mycroft 0622545249 Previous change to vn_lock() was bogus. If we got EDEADLK, it was from 
lockmgr(), and it already unlocked v_interlock.  So, just return in this case.
 1999-03-31 18:30:13 +00:00
wrstuden bd2d8363bc The mode for a node is a mode_t in both struct stat and struct vattr - 
don't use a u_short for intermediate storage in vn_stat.
 1999-03-30 00:16:44 +00:00
sommerfe f1a508e354 Prevent deadlock cited in PR4629 from crashing the system. (copyout 
and system call now just return EFAULT).  A complete fix will
presumably have to wait for UBC and/or for vnode locking protocols to
be revamped to allow use of shared locks.
 1999-03-25 00:20:35 +00:00
mrg d2397ac5f7 completely remove Mach VM support. all that is left is the all the 
header files as UVM still uses (most of) these.
 1999-03-24 05:50:49 +00:00
wrstuden 0078fc50dc Modify VOP_CLOSE vnode op to always take a locked vnode. Change vn_close 
to pass down a locked node. Modify union_copyup() to call VOP_CLOSE
locked nodes.

Also fix a bug in union_copyup() where a lock on the lower vnode would
only be released if VOP_OPEN didn't fail.
 1999-02-26 23:38:55 +00:00
kleink b7877d3fc0 Implement support for IEEE Std 1003.1b-1993 syncronous I/O: 
* if synchronized I/O file integrity completion of read operations was
  requested, set IO_SYNC in the ioflag passed to the read vnode operator.
* if synchronized I/O data integrity completion of write operations was
  requested, set IO_DSYNC in the ioflag passed to the write vnode operator.
 1998-08-02 18:39:14 +00:00
thorpej 6326c90134 Change the "aresid" argument of vn_rdwr() from an int * to a size_t *, 
to match the new uio_resid type.
 1998-07-28 18:37:47 +00:00
thorpej a4a34ba74a Add two additional arguments to the fileops read and write calls, a 
pointer to the offset to use, and a flags word.  Define a flag that
specifies whether or not to update the offset passed by reference.
 1998-06-30 05:33:11 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
thorpej 2fc4c3415a Include the UNION option header. 1998-02-19 00:53:46 +00:00
mrg d90485202c - add defopt's for UVM, UVMHIST and PMAP_NEW. 
- remove unnecessary UVMHIST_DECL's.
 1998-02-10 14:08:44 +00:00
mrg 1a8c7604f4 initial import of the new virtual memory system, UVM, into -current. 
UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some
minor portions derived from the old Mach code.  i provided some help
getting swap and paging working, and other bug fixes/ideas.  chuck
silvers <chuq@chuq.com> also provided some other fixes.

this is the rest of the MI portion changes.

this will be KNF'd shortly.  :-)
 1998-02-05 07:59:28 +00:00
thorpej 561056f2e2 Grab a fix from 4.4BSD-Lite2: open(2) with O_FSYNC and MNT_SYNCHRONOUS 
had not effect.  Fix: check for either of these flags in vn_write(),
and pass IO_SYNC down if they're set.
 1998-01-14 22:08:44 +00:00
fvdl 541b204984 Add vn_readdir function for use in both the old getdirentries and 
the new getdents(). Add getdents().
 1997-10-10 02:09:30 +00:00
mycroft 13ca4f0381 Do not return generation counts to the user. 1997-03-24 21:44:53 +00:00
mycroft 2bc736661a Implement poll(2). 1996-09-07 12:40:22 +00:00
christos e630447d8c First pass at prototyping 1996-02-04 02:17:43 +00:00
mycroft ce5fcc40af Remove gratuitous extra indirections. 1995-05-23 06:11:29 +00:00
mycroft 080e194e58 Remove extra arg to vn_open(). 1994-12-14 19:03:13 +00:00
mycroft a18ec3cb1b LEASE_CHECK -> VOP_LEASE 1994-12-13 21:52:35 +00:00
christos 1a320dc9be added extra argument in vn_open and VOP_OPEN to allow cloning devices 1994-11-14 06:01:16 +00:00
cgd 6ac2bbfc35 be more careful with types, also pull in headers where necessary. 1994-10-30 21:43:03 +00:00
mycroft 868c94ff7c Fix space change in last commit. 1994-09-18 04:40:47 +00:00
cgd 575d44884b from Kirk McKusick: release old ctty if acquiring a new one. 
also: prettiness police!
 1994-09-14 00:35:29 +00:00
cgd cf92afd66e New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD' 1994-06-29 06:29:24 +00:00
mycroft 699bbb84b6 Update to 4.4-Lite fs code. 1994-06-08 11:28:29 +00:00
cgd 91cf0fbaf3 copyright foo 1994-05-17 04:21:49 +00:00
cgd d071d1cf05 some prototype cleanup, eliminate/replace bogus types (e.g. quad and 
u_quad) -> use better types (e.g. quad_t & u_quad_t in inodes),
some cleanup.
 1994-04-25 03:49:27 +00:00
chopps b6ad9ec8d5 FIONREAD returns int not off_t. (ssize_t prefered, but standards may 
dictate otherwise)
 1994-04-12 19:18:33 +00:00
cgd adbe4b0962 kill two wrong 'case's 1993-12-21 07:19:14 +00:00
mycroft 7f50bd1829 Canonicalize all #includes. 1993-12-18 04:21:37 +00:00
ws 053f138dae Changes to VFS readdir semantics 
NFS changes for better cookie support
ISOFS changes for better Rockridge support and support for generation numbers
 1993-09-07 15:40:14 +00:00
pk d18c6d88d0 Support added for proc filesystem. 1993-08-24 12:56:22 +00:00
cgd fe1802950b add include of select.h if necessary for protos, or delete if extraneous 1993-05-22 11:40:42 +00:00
cgd 8d6c77881c make kernel select interface be one-stop shopping & clean it all up. 1993-05-18 18:18:40 +00:00
cgd 61f282557f initial import of 386bsd-0.1 sources 1993-03-21 09:45:37 +00:00