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* nmount'ify unionfs further by using separate options insteadmux2002-06-152-6/+16
| | | | | | | of passing a flags mount options. This removes the include of sys/fs/unionfs/union.h in mount_unionfs as it should be. Reviewed by: phk
* Convert unionfs to nmount.mux2002-05-242-25/+22
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* Fix comments.mux2002-05-241-1/+1
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* Change the vm_zone calls over to uma calls. Remove the reference to thejeff2002-04-081-9/+9
| | | | vm_zone header.
* Remove __P.alfred2002-03-194-83/+83
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* Simple p_ucred -> td_ucred changes to start using the per-thread ucredjhb2002-02-272-4/+4
| | | | reference.
* Don't even think about using v_id for magic tricks, v_id is givingphk2002-02-171-5/+0
| | | | us enough trouble as it is for SMPng.
* SMP Lock struct file, filedesc and the global file list.alfred2002-01-132-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Seigo Tanimura (tanimura) posted the initial delta. I've polished it quite a bit reducing the need for locking and adapting it for KSE. Locks: 1 mutex in each filedesc protects all the fields. protects "struct file" initialization, while a struct file is being changed from &badfileops -> &pipeops or something the filedesc should be locked. 1 mutex in each struct file protects the refcount fields. doesn't protect anything else. the flags used for garbage collection have been moved to f_gcflag which was the FILLER short, this doesn't need locking because the garbage collection is a single threaded container. could likely be made to use a pool mutex. 1 sx lock for the global filelist. struct file * fhold(struct file *fp); /* increments reference count on a file */ struct file * fhold_locked(struct file *fp); /* like fhold but expects file to locked */ struct file * ffind_hold(struct thread *, int fd); /* finds the struct file in thread, adds one reference and returns it unlocked */ struct file * ffind_lock(struct thread *, int fd); /* ffind_hold, but returns file locked */ I still have to smp-safe the fget cruft, I'll get to that asap.
* Fix a BUF_TIMELOCK race against BUF_LOCK and fix a deadlock in vget()dillon2001-12-201-1/+1
| | | | | | | | against VM_WAIT in the pageout code. Both fixes involve adjusting the lockmgr's timeout capability so locks obtained with timeouts do not interfere with locks obtained without a timeout. Hopefully MFC: before the 4.5 release
* Change the vnode list under the mount point from a LIST to a TAILQdillon2001-10-231-1/+1
| | | | | | in preparation for an implementation of limiting code for kern.maxvnodes. MFC after: 3 days
* Change the kernel's ucred API as follows:jhb2001-10-111-2/+1
| | | | | | | | - crhold() returns a reference to the ucred whose refcount it bumps. - crcopy() now simply copies the credentials from one credential to another and has no return value. - a new crshared() primitive is added which returns true if a ucred's refcount is > 1 and false (0) otherwise.
* KSE Milestone 2julian2001-09-124-216/+216
| | | | | | | | | | | | | | Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
* Protect the mnt_vnode list with the mntvnode lock.jhb2001-06-281-0/+4
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* Actually rename FDESC, PORTAL, UMAP and UNION file systems.ru2001-05-241-1/+1
| | | | OK'ed by: bp
* - FDESC, FIFO, NULL, PORTAL, PROC, UMAP and UNION fileru2001-05-233-3/+3
| | | | | | | | | | | | | | | systems were repo-copied from sys/miscfs to sys/fs. - Renamed the following file systems and their modules: fdesc -> fdescfs, portal -> portalfs, union -> unionfs. - Renamed corresponding kernel options: FDESC -> FDESCFS, PORTAL -> PORTALFS, UNION -> UNIONFS. - Install header files for the above file systems. - Removed bogus -I${.CURDIR}/../../sys CFLAGS from userland Makefiles.
* Sort includes from previous commit.jhb2001-05-211-1/+1
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* Introduce a global lock for the vm subsystem (vm_mtx).alfred2001-05-191-0/+1
| | | | | | | | | | | | | | | | | | | vm_mtx does not recurse and is required for most low level vm operations. faults can not be taken without holding Giant. Memory subsystems can now call the base page allocators safely. Almost all atomic ops were removed as they are covered under the vm mutex. Alpha and ia64 now need to catch up to i386's trap handlers. FFS and NFS have been tested, other filesystems will need minor changes (grabbing the vm lock when twiddling page properties). Reviewed (partially) by: jake, jhb
* Currently there is no way to tell if write operation invoked viabp2001-05-181-1/+1
| | | | | | | vn_start_write() on the given vnode will be successful. VOP_LEASE() may help to solve this problem, but its return value ignored nearly everywhere. For now just assume that the missing upper layer on write means insufficient access rights (which is correct for most cases).
* VOP getwritemount() can be invoked on vnodes with VFREE flag set (used inbp2001-05-171-4/+12
| | | | snapshots code). At this point upper vp may not exist.
* Use vop_*vobject() VOPs to get reference to VM object from upper or lower fs.bp2001-05-173-60/+60
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* Do not leave an extra reference on vnode.bp2001-05-171-6/+2
| | | | | | PR: kern/27250 Submitted by: "Vladimir B. Grebenschikov" <vova@express.ru> MFC after: 2 weeks
* Change the second argument of vflush() to an integer that specifiesiedowse2001-05-161-24/+6
| | | | | | | | | | | | | | | | | | | | the number of references on the filesystem root vnode to be both expected and released. Many filesystems hold an extra reference on the filesystem root vnode, which must be accounted for when determining if the filesystem is busy and then released if it isn't busy. The old `skipvp' approach required individual filesystem xxx_unmount functions to re-implement much of vflush()'s logic to deal with the root vnode. All 9 filesystems that hold an extra reference on the root vnode got the logic wrong in the case of forced unmounts, so `umount -f' would always fail if there were any extra root vnode references. Fix this issue centrally in vflush(), now that we can. This commit also fixes a vnode reference leak in devfs, which could result in idle devfs filesystems that refuse to unmount. Reviewed by: phk, bp
* Implement vop_std{get|put}pages() and add them to the default vop[].phk2001-05-011-32/+0
| | | | | Un-copy&paste all the VOP_{GET|PUT}PAGES() functions which do nothing but the default.
* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inmarkm2001-05-011-4/+7
| | | | | | | | | | | other "system" header files. Also help the deprecation of lockmgr.h by making it a sub-include of sys/lock.h and removing sys/lockmgr.h form kernel .c files. Sort sys/*.h includes where possible in affected files. OK'ed by: bde (with reservations)
* Add a vop_stdbmap(), and make it part of the default vop vector.phk2001-04-291-27/+1
| | | | | | Make 7 filesystems which don't really know about VOP_BMAP rely on the default vector, rather than more or less complete local vop_nopbmap() implementations.
* Reviewed by: jlemonadrian2001-03-011-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | An initial tidyup of the mount() syscall and VFS mount code. This code replaces the earlier work done by jlemon in an attempt to make linux_mount() work. * the guts of the mount work has been moved into vfs_mount(). * move `type', `path' and `flags' from being userland variables into being kernel variables in vfs_mount(). `data' remains a pointer into userspace. * Attempt to verify the `type' and `path' strings passed to vfs_mount() aren't too long. * rework mount() and linux_mount() to take the userland parameters (besides data, as mentioned) and pass kernel variables to vfs_mount(). (linux_mount() already did this, I've just tidied it up a little more.) * remove the copyin*() stuff for `path'. `data' still requires copyin*() since its a pointer into userland. * set `mount->mnt_statf_mntonname' in vfs_mount() rather than in each filesystem. This variable is generally initialised with `path', and each filesystem can override it if they want to. * NOTE: f_mntonname is intiailised with "/" in the case of a root mount.
* Mechanical change to use <sys/queue.h> macro API instead ofphk2001-02-041-2/+2
| | | | | | | fondling implementation details. Created with: sed(1) Reviewed by: md5(1)
* Use <sys/queue.h> macro API.phk2001-02-041-2/+1
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* Fix breakage unconvered by LINT - dont refer to undefined variables inpeter2001-01-171-0/+2
| | | | KASSERT()
* Don't compile a dead variable declaration.wollman2001-01-091-0/+2
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* Convert more malloc+bzero to malloc+M_ZERO.dwmalone2000-12-081-3/+1
| | | | | Submitted by: josh@zipperup.org Submitted by: Robert Drehmel <robd@gmx.net>
* Give vop_mmap an untimely death. The opportunity to give it a timelyeivind2000-11-011-17/+0
| | | | death timed out in 1996.
* Move suser() and suser_xxx() prototypes and a related #define fromphk2000-10-291-1/+0
| | | | | | | | | <sys/proc.h> to <sys/systm.h>. Correctly document the #includes needed in the manpage. Add one now needed #include of <sys/systm.h>. Remove the consequent 48 unused #includes of <sys/proc.h>.
* Convert lockmgr locks from using simple locks to using mutexes.jasone2000-10-041-0/+1
| | | | | | Add lockdestroy() and appropriate invocations, which corresponds to lockinit() and must be called to clean up after a lockmgr lock is no longer needed.
* Add snapshots to the fast filesystem. Most of the changes supportmckusick2000-07-112-6/+40
| | | | | | | | | | | | | | | | | | | | the gating of system calls that cause modifications to the underlying filesystem. The gating can be enabled by any filesystem that needs to consistently suspend operations by adding the vop_stdgetwritemount to their set of vnops. Once gating is enabled, the function vfs_write_suspend stops all new write operations to a filesystem, allows any filesystem modifying system calls already in progress to complete, then sync's the filesystem to disk and returns. The function vfs_write_resume allows the suspended write operations to begin again. Gating is not added by default for all filesystems as for SMP systems it adds two extra locks to such critical kernel paths as the write system call. Thus, gating should only be added as needed. Details on the use and current status of snapshots in FFS can be found in /sys/ufs/ffs/README.snapshot so for brevity and timelyness is not included here. Unless and until you create a snapshot file, these changes should have no effect on your system (famous last words).
* Back out the previous change to the queue(3) interface.jake2000-05-262-2/+2
| | | | | | 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 thatjake2000-05-232-2/+2
| | | | | | | | the type argument to *_HEAD and *_ENTRY is a struct. Suggested by: phk Reviewed by: phk Approved by: mdodd
* Separate the struct bio related stuff out of <sys/buf.h> intophk2000-05-051-0/+1
| | | | | | | | | | | | | | | <sys/bio.h>. <sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall not be made a nested include according to bdes teachings on the subject of nested includes. Diskdrivers and similar stuff below specfs::strategy() should no longer need to include <sys/buf.> unless they need caching of data. Still a few bogus uses of struct buf to track down. Repocopy by: peter
* Remove unneeded #include <vm/vm_zone.h>phk2000-04-301-1/+0
| | | | Generated by: src/tools/tools/kerninclude
* Remove B_READ, B_WRITE and B_FREEBUF and replace them with a newphk2000-03-201-1/+1
| | | | | | | | | | | | | | | | | | | | | field in struct buf: b_iocmd. The b_iocmd is enforced to have exactly one bit set. B_WRITE was bogusly defined as zero giving rise to obvious coding mistakes. Also eliminate the redundant struct buf flag B_CALL, it can just as efficiently be done by comparing b_iodone to NULL. Should you get a panic or drop into the debugger, complaining about "b_iocmd", don't continue. It is likely to write on your disk where it should have been reading. This change is a step in the direction towards a stackable BIO capability. A lot of this patch were machine generated (Thanks to style(9) compliance!) Vinum users: Greg has not had time to test this yet, be careful.
* Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"peter1999-12-291-2/+2
| | | | | | 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.
* Second pass commit to introduce new ACL and Extended Attribute systemrwatson1999-12-191-0/+2
| | | | | | | calls, vnops, vfsops, both in /kern, and to individual file systems that require a vfsop_ array entry. Reviewed by: eivind
* Introduce NDFREE (and remove VOP_ABORTOP)eivind1999-12-153-48/+26
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* Lock reporting and assertion changes.eivind1999-12-112-7/+10
| | | | | | | | | | | | | | | * lockstatus() and VOP_ISLOCKED() gets a new process argument and a new return value: LK_EXCLOTHER, when the lock is held exclusively by another process. * The ASSERT_VOP_(UN)LOCKED family is extended to use what this gives them * Extend the vnode_if.src format to allow more exact specification than locked/unlocked. This commit should not do any semantic changes unless you are using DEBUG_VFS_LOCKS. Discussed with: grog, mch, peter, phk Reviewed by: peter
* Remove unused #includes.phk1999-12-081-2/+0
| | | | Obtained from: http://bogon.freebsd.dk/include
* Fix an unused variable warning.peter1999-11-181-1/+0
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* Remove WILLRELE from VOP_SYMLINKeivind1999-11-131-5/+2
| | | | | | 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.
* Remove WILLRELE from VOP_RENAMEeivind1999-11-121-2/+1
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* useracc() the prequel:phk1999-10-291-1/+0
| | | | | | | | | | | Merge the contents (less some trivial bordering the silly comments) of <vm/vm_prot.h> and <vm/vm_inherit.h> into <vm/vm.h>. This puts the #defines for the vm_inherit_t and vm_prot_t types next to their typedefs. This paves the road for the commit to follow shortly: change useracc() to use VM_PROT_{READ|WRITE} rather than B_{READ|WRITE} as argument.
* Before we start to mess with the VFS name-cache clean things up a little bit:phk1999-10-032-6/+0
| | | | Isolate the namecache in its own file, and give it a dedicated malloc type.
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