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* Problem to avoid processes getting stuck in "vmopar". From Ian'sdwmalone2000-10-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | mail: The problem seems to originate with NFS's postop_attr information that is returned with a read or write RPC. Within a vm_fault context, the code cannot deal with vnode_pager_setsize() shrinking a vnode. The workaround in the patch below stops the nfsm_postop_attr() macro from ever shrinking a vnode. If the new size in the postop_attr information is smaller, then it just sets the nfsnode n_attrstamp to 0 to stop the wrong size getting used in the future. This change only affects postop_attr attributes; the nfsm_loadattr() macro works as normal. The change is implemented by adding a new argument to nfs_loadattrcache() called 'dontshrink'. When this is non-zero, nfs_loadattrcache() will never reduce the vnode/nfsnode size; instead it zeros n_attrstamp. There remain other was processes can get stuck in vmopar. Submitted by: Ian Dowse <iedowse@maths.tcd.ie> Reviewed by: dillon Tested by: Vadim Belman <voland@lflat.org>
* Back out the previous change to the queue(3) interface.jake2000-05-261-17/+17
| | | | | | It was not discussed and should probably not happen. Requested by: msmith and others
* Change the way that the queue(3) structures are declared; don't assume thatjake2000-05-231-17/+17
| | | | | | | | the type argument to *_HEAD and *_ENTRY is a struct. Suggested by: phk Reviewed by: phk Approved by: mdodd
* The alpha build cuases the 'nfsuid bloated' warning to occur. Well,dillon2000-01-131-12/+0
| | | | | | | | there is nothing we can do about it. In fact, after further review there simply are not very many instances of the two structures NFS checks for 'bloat' so I've decided to simply rip the checks out entirely. Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
* Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"peter1999-12-291-4/+4
| | | | | | 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.
* Move NFS access cache hits/misses into nfsstats structure sodillon1999-10-251-0/+2
| | | | /usr/bin/nfsstat can get to it easily.
* sigset_t change (part 2 of 5)marcel1999-09-291-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ----------------------------- The core of the signalling code has been rewritten to operate on the new sigset_t. No methodological changes have been made. Most references to a sigset_t object are through macros (see signalvar.h) to create a level of abstraction and to provide a basis for further improvements. The NSIG constant has not been changed to reflect the maximum number of signals possible. The reason is that it breaks programs (especially shells) which assume that all signals have a non-null name in sys_signame. See src/bin/sh/trap.c for an example. Instead _SIG_MAXSIG has been introduced to hold the maximum signal possible with the new sigset_t. struct sigprop has been moved from signalvar.h to kern_sig.c because a) it is only used there, and b) access must be done though function sigprop(). The latter because the table doesn't holds properties for all signals, but only for the first NSIG signals. signal.h has been reorganized to make reading easier and to add the new and/or modified structures. The "old" structures are moved to signalvar.h to prevent namespace polution. Especially the coda filesystem suffers from the change, because it contained lines like (p->p_sigmask == SIGIO), which is easy to do for integral types, but not for compound types. NOTE: kdump (and port linux_kdump) must be recompiled. Thanks to Garrett Wollman and Daniel Eischen for pressing the importance of changing sigreturn as well.
* Asynchronized client-side nfs_commit. NFS commit operations weredillon1999-09-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | previously issued synchronously even if async daemons (nfsiod's) were available. The commit has been moved from the strategy code to the doio code in order to asynchronize it. Removed use of lastr in preparation for removal of vnode->v_lastr. It has been replaced with seqcount, which is already supported by the system and, in fact, gives us a better heuristic for sequential detection then lastr ever did. Made major performance improvements to the server side commit. The server previously fsync'd the entire file for each commit rpc. The server now bawrite()s only those buffers related to the offset/size specified in the commit rpc. Note that we do not commit the meta-data yet. This works still needs to be done. Note that a further optimization can be done (and has not yet been done) on the client: we can merge multiple potential commit rpc's into a single rpc with a greater file offset/size range and greatly reduce rpc traffic. Reviewed by: Alan Cox <alc@cs.rice.edu>, David Greenman <dg@root.com>
* $Id$ -> $FreeBSD$peter1999-08-281-1/+1
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* remove b_proc from struct buf, it's (now) unused.phk1999-05-061-3/+3
| | | | Reviewed by: dillon, bde
* The VFS/BIO subsystem contained a number of hacks in order to optimizealc1999-05-021-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Untangle the nfs send and receive queue locking a little. One lockpeter1999-02-251-3/+5
| | | | | | routine was [ab]used for two different things, and you couldn't tell from the wait channel which one had wedged. Catch a few things missing from NFS_NOSERVER.
* Made unloading of the nfs LKM sort of work. This is mainly to testbde1998-09-071-1/+4
| | | | | | detachment of vfs sysctls. Unloading of vfs LKMs doesn't actually work for any vfs, since it leaves garbage pointers to memory allocation control structures.
* Yow! Completely change the way socket options are handled, eliminatingwollman1998-08-231-2/+2
| | | | | | another specialized mbuf type in the process. Also clean up some of the cruft surrounding IPFW, multicast routing, RSVP, and other ill-explored corners.
* fix buildworld hopefully be3fore anyone complains...jmg1998-06-301-1/+3
| | | | | | | | NFS_*TIMO should possibly be converted to sysctl vars (jkh's suggestion), but in some cases it looks like nfs keeps a copy of the value in a struct hash sizes are already ifdef'd KERNEL, so there aren't userland inpact from them...
* convert some nfs tunables to options, these are:jmg1998-06-301-1/+3
| | | | | | | | | | | | | | | | NFS_MINATTRTIMO VREG attrib cache timeout in sec NFS_MAXATTRTIMO NFS_MINDIRATTRTIMO VDIR attrib cache timeout in sec NFS_MAXDIRATTRTIMO NFS_GATHERDELAY Default write gather delay (msec) NFS_UIDHASHSIZ Tune the size of nfssvc_sock with this NFS_WDELAYHASHSIZ and with this NFS_MUIDHASHSIZ Tune the size of nfsmount with this NFS_NOSERVER (already documented in LINT) NFS_DEBUG turn on NFS debugging also, because NFS_ROOT is used by very different files, it has been renamed to opt_nfsroot.h instead of the old opt_nfs.h....
* For the on-the-wire protocol, u_long -> u_int32_t; long -> int32_t;peter1998-05-311-10/+10
| | | | | | | int -> int32_t; u_short -> u_int16_t. Also, use mode_t instead of u_short for storing modes (mode_t is a u_int16_t). Obtained from: NetBSD
* Support 'mount -u' remounts. This may require disconnecting and rebindingpeter1998-05-311-1/+2
| | | | | | the socket. Certain mode changes are not allowed. Obtained from: NetBSD
* Some const'speter1998-05-311-2/+2
| | | | Obtained from: NetBSD
* NFS Jumbo commit part 1. Cosmetic and structural changes only. The aimpeter1998-05-311-9/+9
| | | | | | of this part of commits is to minimize unnecessary differences between the other NFS's of similar origin. Yes, there are gratuitous changes here that the style folks won't like, but it makes the catch-up less difficult.
* Convert a couple of large allocations to use zones rather than mallocpeter1998-05-241-4/+6
| | | | | | for better packing. This means that we can choose better values for the various hash entries without having to try and get it all to fit within an artificial power of two limit for malloc's sake.
* Allow control of the attribute cache timeouts at mount time.peter1998-05-191-28/+33
| | | | | | We had run out of bits in the nfs mount flags, I have moved the internal state flags into a seperate variable. These are no longer visible via statfs(), but I don't know of anything that looks at them.
* Eradicate the variable "time" from the kernel, using various measures.phk1998-03-301-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "time" wasn't a atomic variable, so splfoo() protection were needed around any access to it, unless you just wanted the seconds part. Most uses of time.tv_sec now uses the new variable time_second instead. gettime() changed to getmicrotime(0. Remove a couple of unneeded splfoo() protections, the new getmicrotime() is atomic, (until Bruce sets a breakpoint in it). A couple of places needed random data, so use read_random() instead of mucking about with time which isn't random. Add a new nfs_curusec() function. Mark a couple of bogosities involving the now disappeard time variable. Update ffs_update() to avoid the weird "== &time" checks, by fixing the one remaining call that passwd &time as args. Change profiling in ncr.c to use ticks instead of time. Resolution is the same. Add new function "tvtohz()" to avoid the bogus "splfoo(), add time, call hzto() which subtracts time" sequences. Reviewed by: bde
* Moved declaration of `union nethostadr' outside of the KERNEL section,bde1998-02-011-15/+15
| | | | | | | | | to give pollution compatible with <nfs/nqfs.h>. At least mount_nfs.c previously had to #define KERNEL before including <nfs/nfs.h> to get this pollution, but this gave other pollution. Moved comment about NFSINT_SIGMASK to immediately before the code that it applies to.
* Last major round (Unless Bruce thinks of somthing :-) of malloc changes.phk1997-10-121-1/+12
| | | | | | | | Distribute all but the most fundamental malloc types. This time I also remembered the trick to making things static: Put "static" in front of them. A couple of finer points by: bde
* unifdef -U__NetBSD__ -D__FreeBSD__phk1997-09-101-5/+1
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* Fix all areas of the system (or at least all those in LINT) to avoid storingwollman1997-08-161-54/+79
| | | | | | | | socket addresses in mbufs. (Socket buffers are the one exception.) A number of kernel APIs needed to get fixed in order to make this happen. Also, fix three protocol families which kept PCBs in mbufs to not malloc them instead. Delete some old compatibility cruft while we're at it, and add some new routines in the in_cksum family.
* Merge WebNFS changes from NetBSD.dfr1997-07-161-3/+30
| | | | Obtained from: NetBSD
* Various fixes from NetBSD:dfr1997-06-031-3/+3
| | | | | | | | | Use u_int for rpc procedure numbers. Some fixes to NQNFS. A rare NULL pointer dereference. Ignore NFSMNT_NOCONN for TCP mounts. Obtained from: NetBSD
* Fix a few bugs with NFS and mmap caused by NFS' use of b_validoffdfr1997-05-191-2/+2
| | | | | | | | and b_validend. The changes to vfs_bio.c are a bit ugly but hopefully can be tidied up later by a slight redesign. PR: kern/2573, kern/2754, kern/3046 (possibly) Reviewed by: dyson
* Don't keep addresses in mbuf chains. This should simplify the next rounddfr1997-05-131-3/+8
| | | | | | of network changes from Garret. Reviewed by: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
* Fix a nasty hang connected with write gathering. Also add debug printdfr1997-05-101-1/+18
| | | | statements to bits of the server which helped me find the hang.
* Define our own version of DIRBLKSIZ instead of (ab)using ufs's value.bde1997-03-291-43/+5
| | | | | | | | | | | | | | | | | | | Use the same value of 512 (ufs actually uses DEV_BSIZE). There are too many versions of DIRBLKSIZ, one for ufs, one for ext2fs, one for nfs, one for ibcs2, one for linux, one for applications, ... I think nfs's DIRBLKSIZ needs to be a divisor of the directory blocks sizes of all supported file systems. There is also NFS_DIRBLKSIZ, which is different from nfs's DIRBLKSIZ but is sometimes confused with it in comments. Removed a bogus #ifdef KERNEL that hid the tunable constants for nfs. This came in undocumented with the Lite2 merge although it isn't in Lite2. It required more-bogus #define KERNEL's in fstat and pstat to make the constants visible. Restored a spelling fix from rev.1.17. Removed duplicate #defines of all the the NFS mount option flags.
* Add code that will reject nfs requests in teh kernel from nonprivilegedguido1997-03-271-1/+3
| | | | | | ports. This option will be automatically set/cleraed when mount is run without/with the -n option. Reviewed by: Doug Rabson
* Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are notpeter1997-02-221-1/+1
| | | | ready for it yet.
* This is the kernel Lite/2 commit. There are some requisite userlanddyson1997-02-101-49/+119
| | | | | | | | | | | | | | | changes, so don't expect to be able to run the kernel as-is (very well) without the appropriate Lite/2 userland changes. The system boots and can mount UFS filesystems. Untested: ext2fs, msdosfs, NFS Known problems: Incorrect Berkeley ID strings in some files. Mount_std mounts will not work until the getfsent library routine is changed. Reviewed by: various people Submitted by: Jeffery Hsu <hsu@freebsd.org>
* Make the long-awaited change from $Id$ to $FreeBSD$jkh1997-01-141-1/+1
| | | | | | | | This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
* Improve the queuing algorithms used by NFS' asynchronous i/o. Thedfr1996-11-061-2/+2
| | | | | | | | | | | | | | | | | | existing mechanism uses a global queue for some buffers and the vp->b_dirtyblkhd queue for others. This turns sequential writes into randomly ordered writes to the server, affecting both read and write performance. The existing mechanism also copes badly with hung servers, tending to block accesses to other servers when all the iods are waiting for a hung server. The new mechanism uses a queue for each mount point. All asynchronous i/o goes through this queue which preserves the ordering of requests. A simple mechanism ensures that the iods are shared out fairly between active mount points. This removes the sysctl variable vfs.nfs.dwrite since the new queueing mechanism removes the old delayed write code completely. This should go into the 2.2 branch.
* Even though this looks like it, this is not a complex code change.dyson1996-08-211-4/+2
| | | | | | | | | | | | | | | | | The interface into the "VMIO" system has changed to be more consistant and robust. Essentially, it is now no longer necessary to call vn_open to get merged VM/Buffer cache operation, and exceptional conditions such as merged operation of VBLK devices is simpler and more correct. This code corrects a potentially large set of problems including the problems with ktrace output and loaded systems, file create/deletes, etc. Most of the changes to NFS are cosmetic and name changes, eliminating a layer of subroutine calls. The direct calls to vput/vrele have been re-instituted for better cross platform compatibility. Reviewed by: davidg
* Fix a bunch of spelling errors in the comment fields ofmpp1996-01-301-3/+3
| | | | a bunch of system include files.
* Staticize.phk1995-12-171-12/+6
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* Completed function declarations and/or added prototypes and/or movedbde1995-12-031-1/+55
| | | | prototypes to the right place.
* Completed function declarations and/or added prototypes.bde1995-11-211-1/+4
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* Include a prerequisite header (so this is consistent again with thejoerg1995-10-311-1/+3
| | | | NFSv2 state).
* Second batch of cleanup changes.phk1995-10-291-3/+1
| | | | | This time mostly making a lot of things static and some unused variables here and there.
* Eliminate sloppy common-style declarations. There should be none left forbde1995-07-291-6/+6
| | | | the LINT configuation.
* Changes to support version 3 of the NFS protocol.dfr1995-06-271-53/+226
| | | | | | | | | | | | | | | | | | The version 2 support has been tested (client+server) against FreeBSD-2.0, IRIX 5.3 and FreeBSD-current (using a loopback mount). The version 2 support is stable AFAIK. The version 3 support has been tested with a loopback mount and minimally against an IRIX 5.3 server. It needs more testing and may have problems. I have patched amd to support the new variable length filehandles although it will still only use version 2 of the protocol. Before booting a kernel with these changes, nfs clients will need to at least build and install /usr/sbin/mount_nfs. Servers will need to build and install /usr/sbin/mountd. NFS diskless support is untested. Obtained from: Rick Macklem <rick@snowhite.cis.uoguelph.ca>
* YFfixphk1995-02-141-1/+5
| | | | | | +int nfsrv_vput __P(( struct vnode * )); +int nfsrv_vrele __P(( struct vnode * )); +int nfsrv_vmio __P(( struct vnode * ));
* Forward-declare a few structures to avoid warning messages.wollman1994-11-021-1/+4
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* Implement fs.nfs MIB variables.wollman1994-10-231-2/+12
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