Commit Graph

57 Commits

Author SHA1 Message Date
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
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 90345b38a6 add sys/dirent.h 2004-04-21 02:40:42 +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
darcy 566d30be44 Changes as discussed with itojun on tech-kern. I have modified the enums
to have KFS or PFS differentiators.  Further I have wrapped the enum in
procfs in "#ifdef _KERNEL" as it is done in kernfs.

To see the discussion go to http://mail-index.NetBSD.org/tech-kern/2003/09/
and look for "Mismatched enums in include files" in the list.
2003-09-27 13:29:02 +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
darrenr 960df3c8d1 Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records.  The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
2003-06-28 14:20:43 +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
christos dbe6c38bc2 Implement /proc/<pid>/fd/<n>. This is work in progress. Questionable things:
- Is it ok to convert DTYPE_PIPE to VFIFO and DTYPE_SOCKET to VSOCK?
    - XXX: Avoid locking issue in ls -Rl /proc by avoiding curproc
    - Does I/O to pipes work?
    - XXX: Are there security implications?
2003-01-03 13:21:17 +00:00
christos 6868d0a7d6 MNT_GETARGS support 2002-09-21 18:08:27 +00:00
soren 178d83d503 Die, qaddr_t, die! - mnt_data in struct mount is already effectively
a void *, so stop pretending otherwise.
2002-07-30 07:40:07 +00:00
lukem e4b00f433c add RCSIDs 2001-11-10 13:33:40 +00:00
chs adf5d360a7 add a new VFS op, vfs_reinit, which is called when desiredvnodes is
adjusted via sysctl.  file systems that have hash tables which are
sized based on the value of this variable now resize those hash tables
using the new value.  the max number of FFS softdeps is also recalculated.

convert various file systems to use the <sys/queue.h> macros for
their hash tables.
2001-09-15 16:12:54 +00:00
mrg 67afbd6270 use _KERNEL_OPT 2001-05-30 11:57:16 +00:00
jdolecek 555bbcc02a g/c pmnt_mp in struct procfs_args 2001-01-25 12:44:56 +00:00
jdolecek d9466585b7 make filesystem vnodeop, specop, fifoop and vnodeopv_* arrays const 2001-01-22 12:17:35 +00:00
fvdl 4e000b75b2 Add a few linux-style files, only enabled when -o linux is specified
for the mount. Currently these are /proc/cpuinfo and /proc/meminfo.
The former only does something on i386 right now.
2001-01-17 00:09:07 +00:00
mrg 20515f2854 <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 02:44:06 +00:00
assar 6c734cd283 make vfs_getnewfsid only take one argument and fetch the name of the
filesystem from the supplied mount argument.  also make makefstype
take a const parameter.  update all the callers.
2000-06-10 18:27:01 +00:00
jdolecek 89015c4648 Add new VFS op routine - vfs_done and call it on filesystem detach
in vfs_detach(). vfs_done may free global filesystem's resources,
typically those allocated in respective filesystem's init function.
Needed so those filesystems which went in via LKM have a chance to
clean after themselves before unloading. This fixes random panics
when LKM for filesystem using pools was loaded and unloaded several
times.

For each leaf filesystem, add appropriate vfs_done routine.
2000-03-16 18:08:17 +00:00
fvdl 15bb1bd145 At mount/unmount time, add an exec hook to revoke all vnodes iff the
process is about to exec a sugid binary.

To speed up things, use hashing for vnode allocation, like other filesystems
do. This avoids walking the whole procfs node list in the revoke case too.
2000-01-25 21:52:04 +00:00
wrstuden 862a56e88b Modify vfsops to seperate vfs_fhtovp() into two routines. vfs_fhtovp() now
only handles the file handle to vnode conversion, and a new call,
vfs_checkexp(), performs the export verification.
1999-02-26 23:44:43 +00:00
perry 4522c799a1 bzero->memset, bcopy->memcpy, bcmp->memcmp 1998-08-09 20:51:08 +00:00
jonathan d275e56dee * defopt COMPAT_{09,10,11,12,13} and COMPAT_NOMID.
TODO: revisit interaction between native compat and emul compat usage.
1998-07-05 08:49:30 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
thorpej b5bf2ed6d0 Place a pointer to an array of our vnodeopv_desc *'s in our vfsops
structure, for use by vfs_attach().
1998-02-18 07:05:47 +00:00
cgd 90688fce27 Change the second and third args to struct vfsops' (*vfs_mount)() to
'const char *', and 'void *', respectively.  The second arg is taken directly
from user arguments, and is const there, so must be const in the prototypes
and functions.  The third arg is also taken directly from user arguments.
It doesn't have to be changed, but since it's cleaner to keep the type
the same as the user arg's type, and I'm already making the 'const char *'
change...
1996-12-22 10:10:12 +00:00
christos 631ccba638 miscfs prototype changes 1996-02-09 22:39:56 +00:00
cgd 8f62c773e8 don't assume the f_fsnamelen is nul-truncated or longer than MFSNAMELEN 1995-06-18 14:45:14 +00:00
mycroft 2f805fa51b copy*str() should use size_t. 1995-03-09 12:05:21 +00:00
mycroft e9017fd132 Clean up the code to frob mnt_stat a (tiny) bit. 1995-01-18 09:34:24 +00:00
mycroft 814ba0fc30 Call foo_statfs() from a common place when mounting. 1994-12-15 20:00:14 +00:00
mycroft 76e0a7d0f4 Fix typo. 1994-09-15 03:47:19 +00:00
mycroft cab4d25c24 stat the file system at mount time, for `df -n', et al. 1994-09-15 03:42:37 +00:00
cgd cf92afd66e New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD' 1994-06-29 06:29:24 +00:00
mycroft 117527f322 Minor update from JSP after merging my changes. 1994-06-15 22:54:38 +00:00
mycroft cde1d47595 Update to 4.4-Lite fs code, with local changes. 1994-06-08 11:33:09 +00:00
cgd 4917d8beec make fs types consistent over new kernels. also, some proto foo. 1994-04-23 07:54:38 +00:00
cgd 3dda0064a5 Convert mount, vnode, and buf structs to use <sys/queue.h>. Also,
some knf and structure frobbing to do along with it.
1994-04-21 07:47:31 +00:00
cgd 914b690745 forgot these... 1994-04-15 20:49:27 +00:00
cgd 93159ea799 fs types are names now. 1994-04-14 04:05:45 +00:00
ws 2cee3e073f Make procfs really work for debugging.
Implement not & notepg files in procfs.
1994-01-20 21:22:47 +00:00
ws 6202bab2db Bug fixes and enhancements:
Make NFS serving work (BUT DON'T USE "attach" TO /proc/*/ctl FOR NOW!!!)
Make `curproc' a symbolic link
Add `.' and `..' entries to the directories.
Return better guesses on the size of the files.
1994-01-09 19:44:03 +00:00
cgd 699e3be9e9 add new procfs code, from Jan-Simon Pendry, jsp@sequent.com.
This is pretty-much "virgin", so that diffs can be done later.
1994-01-05 07:51:08 +00:00
mycroft 0560892d34 Canonicalize all #includes. 1993-12-18 03:48:27 +00:00