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* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inmarkm2001-05-011-3/+2
| | | | | | | | | | | 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)
* Change and clean the mutex lock interface.bmilekic2001-02-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mtx_enter(lock, type) becomes: mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks) mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized) similarily, for releasing a lock, we now have: mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN. We change the caller interface for the two different types of locks because the semantics are entirely different for each case, and this makes it explicitly clear and, at the same time, it rids us of the extra `type' argument. The enter->lock and exit->unlock change has been made with the idea that we're "locking data" and not "entering locked code" in mind. Further, remove all additional "flags" previously passed to the lock acquire/release routines with the exception of two: MTX_QUIET and MTX_NOSWITCH The functionality of these flags is preserved and they can be passed to the lock/unlock routines by calling the corresponding wrappers: mtx_{lock, unlock}_flags(lock, flag(s)) and mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN locks, respectively. Re-inline some lock acq/rel code; in the sleep lock case, we only inline the _obtain_lock()s in order to ensure that the inlined code fits into a cache line. In the spin lock case, we inline recursion and actually only perform a function call if we need to spin. This change has been made with the idea that we generally tend to avoid spin locks and that also the spin locks that we do have and are heavily used (i.e. sched_lock) do recurse, and therefore in an effort to reduce function call overhead for some architectures (such as alpha), we inline recursion for this case. Create a new malloc type for the witness code and retire from using the M_DEV type. The new type is called M_WITNESS and is only declared if WITNESS is enabled. Begin cleaning up some machdep/mutex.h code - specifically updated the "optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently need those. Finally, caught up to the interface changes in all sys code. Contributors: jake, jhb, jasone (in no particular order)
* Give vop_mmap an untimely death. The opportunity to give it a timelyeivind2000-11-011-1/+0
| | | | death timed out in 1996.
* Convert lockmgr locks from using simple locks to using mutexes.jasone2000-10-041-1/+3
| | | | | | Add lockdestroy() and appropriate invocations, which corresponds to lockinit() and must be called to clean up after a lockmgr lock is no longer needed.
* Remove unneeded <sys/buf.h> includes.phk2000-04-181-1/+0
| | | | | Due to some interesting cpp tricks in lockmgr, the LINT kernel shrinks by 924 bytes.
* $Id$ -> $FreeBSD$peter1999-08-281-1/+1
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* Return ENOTTY instead of EBADF for ioctls on dead vnodes. This fixesbde1998-11-221-2/+2
| | | | | tcsetpgrp() on controlling terminals that are no longer associated with the session of the calling process, not to mention ioctl.2.
* Enabled Lite2 fix for reading from dead ttys.bde1998-08-231-10/+1
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* Add support for poll(2) on files. vop_nopoll() now returns POLLNVALwollman1997-12-151-5/+20
| | | | | | | | | | | | | | | | | | | if one of the new poll types is requested; hopefully this will not break any existing code. (This is done so that programs have a dependable way of determining whether a filesystem supports the extended poll types or not.) The new poll types added are: POLLWRITE - file contents may have been modified POLLNLINK - file was linked, unlinked, or renamed POLLATTRIB - file's attributes may have been changed POLLEXTEND - file was extended Note that the internal operation of poll() means that it is impossible for two processes to reliably poll for the same event (this could be fixed but may not be worth it), so it is not possible to rewrite `tail -f' to use poll at this time.
* Don't include <sys/lock.h> in headers when only `struct simplelock' isbde1997-12-051-1/+2
| | | | required. Fixed everything that depended on the pollution.
* VFS interior redecoration.phk1997-10-261-22/+11
| | | | | | | | | | | | | Rename vn_default_error to vop_defaultop all over the place. Move vn_bwrite from vfs_bio.c to vfs_default.c and call it vop_stdbwrite. Use vop_null instead of nullop. Move vop_nopoll from vfs_subr.c to vfs_default.c Move vop_sharedlock from vfs_subr.c to vfs_default.c Move vop_nolock from vfs_subr.c to vfs_default.c Move vop_nounlock from vfs_subr.c to vfs_default.c Move vop_noislocked from vfs_subr.c to vfs_default.c Use vop_ebadf instead of *_ebadf. Add vop_defaultop for getpages on master vnode in MFS.
* VFS clean up "hekto commit"phk1997-10-161-3/+1
| | | | | | | | | | 1. Add defaults for more VOPs VOP_LOCK vop_nolock VOP_ISLOCKED vop_noislocked VOP_UNLOCK vop_nounlock and remove direct reference in filesystems. 2. Rename the nfsv2 vnop tables to improve sorting order.
* Another VFS cleanup "kilo commit"phk1997-10-161-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Remove VOP_UPDATE, it is (also) an UFS/{FFS,LFS,EXT2FS,MFS} intereface function, and now lives in the ufsmount structure. 2. Remove VOP_SEEK, it was unused. 3. Add mode default vops: VOP_ADVLOCK vop_einval VOP_CLOSE vop_null VOP_FSYNC vop_null VOP_IOCTL vop_enotty VOP_MMAP vop_einval VOP_OPEN vop_null VOP_PATHCONF vop_einval VOP_READLINK vop_einval VOP_REALLOCBLKS vop_eopnotsupp And remove identical functionality from filesystems 4. Add vop_stdpathconf, which returns the canonical stuff. Use it in the filesystems. (XXX: It's probably wrong that specfs and fifofs sets this vop, shouldn't it come from the "host" filesystem, for instance ufs or cd9660 ?) 5. Try to make system wide VOP functions have vop_* names. 6. Initialize the um_* vectors in LFS. (Recompile your LKMS!!!)
* VFS mega cleanup commit (x/N)phk1997-10-161-82/+25
| | | | | | | | | | | | | | | | | | | | | | | 1. Add new file "sys/kern/vfs_default.c" where default actions for VOPs go. Implement proper defaults for ABORTOP, BWRITE, LEASE, POLL, REVOKE and STRATEGY. Various stuff spread over the entire tree belongs here. 2. Change VOP_BLKATOFF to a normal function in cd9660. 3. Kill VOP_BLKATOFF, VOP_TRUNCATE, VOP_VFREE, VOP_VALLOC. These are private interface functions between UFS and the underlying storage manager layer (FFS/LFS/MFS/EXT2FS). The functions now live in struct ufsmount instead. 4. Remove a kludge of VOP_ functions in all filesystems, that did nothing but obscure the simplicity and break the expandability. If a filesystem doesn't implement VOP_FOO, it shouldn't have an entry for it in its vnops table. The system will try to DTRT if it is not implemented. There are still some cruft left, but the bulk of it is done. 5. Fix another VCALL in vfs_cache.c (thanks Bruce!)
* Hmm, realign the vnops into two columns.phk1997-10-151-8/+8
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* Stylistic overhaul of vnops tables.phk1997-10-151-49/+42
| | | | | | | 1. Remove comment stating the blatantly obvious. 2. Align in two columns. 3. Sort all but the default element alphabetically. 4. Remove XXX comments pointing out entries not needed.
* Convert select -> poll.peter1997-09-141-21/+10
| | | | | Delete 'always succeed' select/poll handlers, replaced with generic call. Flag missing vnode op table entries.
* Removed unused #includes.bde1997-09-021-5/+1
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* 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 userlanddyson1997-02-101-4/+24
| | | | | | | | | | | | | | | 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.
* staticize.phk1995-12-021-27/+27
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* Removed unsed function dead_nullop().bde1995-11-111-13/+3
| | | | Converted incomplete function declarations to prototypes.
* Introduced a type `vop_t' for vnode operation functions and usedbde1995-11-091-44/+44
| | | | | | | | | | | | | | | it 1138 times (:-() in casts and a few more times in declarations. This change is null for the i386. The type has to be `typedef int vop_t(void *)' and not `typedef int vop_t()' because `gcc -Wstrict-prototypes' warns about the latter. Since vnode op functions are called with args of different (struct pointer) types, neither of these function types is any use for type checking of the arg, so it would be preferable not to use the complete function type, especially since using the complete type requires adding 1138 casts to avoid compiler warnings and another 40+ casts to reverse the function pointer conversions before calling the functions.
* Added VOP_GETPAGES/VOP_PUTPAGES and also the "backwards" block countdyson1995-09-041-2/+3
| | | | for VOP_BMAP. Updated affected filesystems...
* Cosmetics: added a #include and a static prototype to silence gcc.phk1994-10-081-1/+3
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* Use tsleep() rather than sleep so that 'ps' is more informative aboutdg1994-10-061-2/+2
| | | | the wait.
* Implemented loadable VFS modules, and made most existing filesystemswollman1994-09-211-1/+4
| | | | loadable. (NFS is a notable exception.)
* Added $Id$dg1994-08-021-0/+1
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* The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.rgrimes1994-05-251-0/+14
| | | | | Reviewed by: Rodney W. Grimes Submitted by: John Dyson and David Greenman
* BSD 4.4 Lite Kernel Sourcesrgrimes1994-05-241-0/+354
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