Commit Graph

22 Commits

Author SHA1 Message Date
wrstuden a39afd9fea Revert last two changes. Since union vnode private data do not follow
layerfs guidelines, whenever layerfs_snapshot() does something, it
won't be correct for unionfs.
2004-05-31 02:04:35 +00:00
tron 2295bcf960 Include "miscfs/genfs/layer_extern.h" to get prototype for
layerfs_snapshot().
2004-05-30 09:48:37 +00:00
wrstuden fc8849c40a unionfs can use layerfs_snapshot() too. 2004-05-29 23:49:31 +00:00
hannken 8c21bc6224 Add ffs internal snapshots. Written by Marshall Kirk McKusick for FreeBSD.
- Not enabled by default. Needs kernel option FFS_SNAPSHOT.
- Change parameters of ffs_blkfree.
- Let the copy-on-write functions return an error so spec_strategy
    may fail if the copy-on-write fails.
- Change genfs_*lock*() to use vp->v_vnlock instead of &vp->v_lock.
- Add flag B_METAONLY to VOP_BALLOC to return indirect block buffer.
- Add a function ffs_checkfreefile needed for snapshot creation.
- Add special handling of snapshot files:
    Snapshots may not be opened for writing and the attributes are read-only.
    Use the mtime as the time this snapshot was taken.
    Deny mtime updates for snapshot files.
- Add function transferlockers to transfer any waiting processes from
  one lock to another.
- Add vfsop VFS_SNAPSHOT to take a snapshot and make it accessible through
  a vnode.
- Add snapshot support to ls, fsck_ffs and dump.

Welcome to 2.0F.

Approved by: Jason R. Thorpe <thorpej@netbsd.org>
2004-05-25 14:54:55 +00:00
atatat 53c625655c Sysctl descriptions under vfs subtree 2004-05-25 04:44:43 +00:00
christos e944b1cdd8 Can't do the trick with using sbp as temporary storage; allocate memory
instead.
2004-05-24 03:09:48 +00:00
christos 223d219efc declare the correct variable; thanks Juan RP. 2004-05-22 22:13:50 +00:00
christos 880fcd4a6e simplify stats taking and avoid the extra copy on the stack. 2004-05-22 20:42:08 +00:00
jrf 5f626331c1 caddr_t -> void * and removal of some more casts. 2004-05-12 02:07:37 +00:00
jrf fc97fd571a First pass for some caddr_t removal and changes to get rid of it where we
no longer use and/or need it

	- removed casts from unionfs, deadfs and fdesc
	  (there are more to hunt down still)
	- changed vfs_quotactl args argumet from caddr_t to void *
	- changed vfs_quotactl structures/callers to reflect the api change

Compiled fine and ran for about a day. Approved/reviewed by
christos@netbsd.org and gimpy@netbsd.org.
2004-04-27 17:37:30 +00:00
christos 6bd1d6d4db Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.
2004-04-21 01:05:31 +00:00
atatat 19af35fd0d Tango on sysctl_createv() and flags. The flags have all been renamed,
and sysctl_createv() now uses more arguments.
2004-03-24 15:34:46 +00:00
atatat 13f8d2ce5f Dynamic sysctl.
Gone are the old kern_sysctl(), cpu_sysctl(), hw_sysctl(),
vfs_sysctl(), etc, routines, along with sysctl_int() et al.  Now all
nodes are registered with the tree, and nodes can be added (or
removed) easily, and I/O to and from the tree is handled generically.

Since the nodes are registered with the tree, the mapping from name to
number (and back again) can now be discovered, instead of having to be
hard coded.  Adding new nodes to the tree is likewise much simpler --
the new infrastructure handles almost all the work for simple types,
and just about anything else can be done with a small helper function.

All existing nodes are where they were before (numerically speaking),
so all existing consumers of sysctl information should notice no
difference.

PS - I'm sorry, but there's a distinct lack of documentation at the
moment.  I'm working on sysctl(3/8/9) right now, and I promise to
watch out for buses.
2003-12-04 19:38:21 +00:00
agc aad01611e7 Move UCB-licensed code from 4-clause to 3-clause licence.
Patches provided by Joel Baker in PR 22364, verified by myself.
2003-08-07 16:26:28 +00:00
fvdl d5aece61d6 Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
2003-06-29 22:28:00 +00:00
thorpej a06b275edc Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget().  Turns out
  that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
  and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
  above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
  just to appease the above.
2003-06-29 18:43:21 +00:00
thorpej 7da140a1a2 Fix problems with Darren's ktrace/lwp changes. 2003-06-29 15:11:48 +00:00
darrenr 28c230cff5 More changes for providing lwpid for ktrace (sparc GENERIC built) 2003-06-29 09:56:29 +00:00
christos 80ecd573c0 PR/1796: John Kohl: statfs misbehaves under chrooted environments.
- Under chroot it displays only the visible filesystems with appropriate paths.
- The statfs f_mntonname gets adjusted to contain the real path from root.
- While was there, fixed a bug in ext2fs, locking problems with vfs_getfsstat(),
  and factored out some of the vfsop statfs() code to copy_statfs_info(). This
  fixes the problem where some filesystems forgot to set fsid.
- Made coda look more like a normal fs.
2003-04-16 21:44:18 +00:00
jdolecek b712ffbfbd add comment for one NULL union_vfsops member 2003-03-17 10:28:41 +00:00
jdolecek 46eb0d5bf0 make it possible for UNION fs to be loaded via LKM - instead of
having some #ifdef UNION code in vfs_vnops.c, introduce variable
'vn_union_readdir_hook' which is set to address of appropriate
vn_readdir() hook by union filesystem when it's loaded & mounted
2003-03-17 09:11:29 +00:00
jdolecek a0deb3e9c4 move union filesystem code from sys/miscfs/union to sys/fs/union 2003-03-16 08:26:46 +00:00