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path: root/sys/fs/devfs/devfs_vfsops.c
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* Initialize struct vfsops C99-sparsely.phk2003-06-121-15/+4
| | | | | Submitted by: hmp Reviewed by: phk
* Rename vfs_stdsync function to vfs_stdnosync which matches morekan2003-03-111-1/+1
| | | | | | | | | | | | | closely what function is really doing. Update all existing consumers to use the new name. Introduce a new vfs_stdsync function, which iterates over mount point's vnodes and call FSYNC on each one of them in turn. Make nwfs and smbfs use this new function instead of rolling their own identical sync implementations. Reviewed by: jeff
* Back out M_* changes, per decision of the TRB.imp2003-02-191-2/+2
| | | | Approved by: trb
* NODEVFS cleanup: remove #ifdefs.phk2003-01-291-2/+0
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* Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.alfred2003-01-211-2/+2
| | | | Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
* Remove dm_root entry from struct devfs_mount. It's never set, and isrwatson2002-12-091-1/+2
| | | | | | | | | | | | unused. Replace it with a dm_mount back-pointer to the struct mount that the devfs_mount is associated with. Export that pointer to MAC Framework entry points, where all current policies don't use the pointer. This permits the SEBSD port of SELinux's FLASK/TE to compile out-of-the-box on 5.0-CURRENT with full file system labeling support. Approved by: re (murray) Obtained from: TrustedBSD Project Sponsored by: DARPA, Network Associates Laboratories
* A better solution to avoiding variable sized structs in DEVFS.phk2002-10-161-0/+4
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* Introduce typedefs for the member functions of struct vfsops and employphk2002-08-131-9/+6
| | | | | | | these in the main filesystems. This does not change the resulting code but makes the source a little bit more grepable. Sponsored by: DARPA and NAI Labs.
* - Replace v_flag with v_iflag and v_vflagjeff2002-08-041-1/+1
| | | | | | | | | | | | | | | - v_vflag is protected by the vnode lock and is used when synchronization with VOP calls is needed. - v_iflag is protected by interlock and is used for dealing with vnode management issues. These flags include X/O LOCK, FREE, DOOMED, etc. - All accesses to v_iflag and v_vflag have either been locked or marked with mp_fixme's. - Many ASSERT_VOP_LOCKED calls have been added where the locking was not clear. - Many functions in vfs_subr.c were restructured to provide for stronger locking. Idea stolen from: BSD/OS
* Introduce support for Mandatory Access Control and extensiblerwatson2002-07-311-0/+8
| | | | | | | | | | | | | | | | kernel access control. Instrument devfs to support per-dirent MAC labels. In particular, invoke MAC framework when devfs directory entries are instantiated due to make_dev() and related calls, and invoke the MAC framework when vnodes are instantiated from these directory entries. Implement vop_setlabel() for devfs, which pushes the label update into the devfs directory entry for semi-persistant store. This permits the MAC framework to assign labels to devices and directories as they are instantiated, and export access control information via devfs vnodes. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
* Introduce the DEVFS "rule" subsystem. DEVFS rules permit thedd2002-07-171-0/+1
| | | | | | | | | | | administrator to define certain properties of new devfs nodes before they become visible to the userland. Both static (e.g., /dev/speaker) and dynamic (e.g., /dev/bpf*, some removable devices) nodes are supported. Each DEVFS mount may have a different ruleset assigned to it, permitting different policies to be implemented for things like jails. Approved by: phk
* Convert devfs to nmount.mux2002-05-021-6/+5
| | | | Reviewed by: phk
* Remove __P.alfred2002-03-191-7/+7
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* Backed out vestiges of the quick fixes for the transient breakage ofbde2001-10-131-1/+0
| | | | | <sys/mount.h> in rev.1.106 of the latter (don't include <sys/socket.h> just to work around bugs in <sys/mount.h>).
* KSE Milestone 2julian2001-09-121-14/+14
| | | | | | | | | | | | | | 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
* Change the second argument of vflush() to an integer that specifiesiedowse2001-05-161-12/+2
| | | | | | | | | | | | | | | | | | | | 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
* Convert DEVFS from an "opt-in" to an "opt-out" option.phk2001-05-131-0/+2
| | | | | | | | | If for some reason DEVFS is undesired, the "NODEVFS" option is needed now. Pending any significant issues, DEVFS will be made mandatory in -current on july 1st so that we can start reaping the full benefits of having it.
* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inmarkm2001-05-011-4/+5
| | | | | | | | | | | 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 this ridiculous include foo so it will compile againmjacob2001-04-231-0/+2
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* Reviewed by: jlemonadrian2001-03-011-8/+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.
* Convert more malloc+bzero to malloc+M_ZERO.dwmalone2000-12-081-2/+1
| | | | | Submitted by: josh@zipperup.org Submitted by: Robert Drehmel <robd@gmx.net>
* Remove unneeded #include <sys/proc.h> lines.phk2000-10-291-1/+0
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* Don't hold an extra reference to vnodes. Devfs vnodes are sufficientlyphk2000-10-091-2/+4
| | | | | | | | | | | | | | cheap to setup that it doesn't really matter that we recycle device vnodes at kleenex speed. Implement first cut try at killing cloned devices when they are not needed anymore. For now only the bpf driver is involved in this experiment. Cloned devices can set the SI_CHEAPCLONE flag which allows us to destroy_dev() it when the vcount() drops to zero and the vnode is reclaimed. For now it's a requirement that the driver doesn't keep persistent state from close to (re)open. Some whitespace changes.
* Convert lockmgr locks from using simple locks to using mutexes.jasone2000-10-041-0/+2
| | | | | | Add lockdestroy() and appropriate invocations, which corresponds to lockinit() and must be called to clean up after a lockmgr lock is no longer needed.
* Use size_t instead of u_int for 4th argument to copyinstr().jhb2000-09-121-1/+1
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* Add refcounts to the "global" DEVFS inode slots, this allows usphk2000-09-061-4/+4
| | | | | | | | | | | | | | | | | | | to recycle inodes after a destroy_dev() but not until all mounts have picked up the change. Add support for an overflow table for DEVFS inodes. The static table defaults to 1024 inodes, if that fills, an overflow table of 32k inodes is allocated. Both numbers can be changed at compile time, the size of the overflow table also with the sysctl vfs.devfs.noverflow. Use atomic instructions to barrier between make_dev()/destroy_dev() and the mounts. Add lockmgr() locking of directories for operations accessing or modifying the directory TAILQs. Various nitpicking here and there.
* Off by one error.phk2000-09-041-1/+1
| | | | Submitted by: des
* Reorder vop's alphabetically.phk2000-08-271-42/+30
| | | | | | Smarter use of devfs_allocv() (from bp@) Introduce devfs_find() ".." fixes to devfs_lookup (from bp@)
* Fix panic when removing open device (found by bp@)phk2000-08-241-21/+4
| | | | | | | | | | | | Implement subdirs. Build the full "devicename" for cloning functions. Fix panic when deleted device goes away. Collaps devfs_dir and devfs_dirent structures. Add proper cloning to the /dev/fd* "device-"driver. Fix a bug in make_dev_alias() handling which made aliases appear multiple times. Use devfs_clone to implement getdiskbyname() Make specfs maintain the stat(2) timestamps per dev_t
* Fix devfs_access() bug on directories.phk2000-08-211-2/+0
| | | | | | Remove unused #includes. Bug spotted by: markm
* Remove all traces of Julians DEVFS (incl from kern/subr_diskslice.c)phk2000-08-201-0/+243
Remove old DEVFS support fields from dev_t. Make uid, gid & mode members of dev_t and set them in make_dev(). Use correct uid, gid & mode in make_dev in disk minilayer. Add support for registering alias names for a dev_t using the new function make_dev_alias(). These will show up as symlinks in DEVFS. Use makedev() rather than make_dev() for MFSs magic devices to prevent DEVFS from noticing this abuse. Add a field for DEVFS inode number in dev_t. Add new DEVFS in fs/devfs. Add devfs cloning to: disk minilayer (ie: ad(4), sd(4), cd(4) etc etc) md(4), tun(4), bpf(4), fd(4) If DEVFS add -d flag to /sbin/inits args to make it mount devfs. Add commented out DEVFS to GENERIC
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