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59 Commits

Author SHA1 Message Date
christos
79e3c74f8e Introduce genfs_pathconf() and use it for the default case in all filesystems. 2020-06-27 17:29:17 +00:00
christos
9aa2a9c323 Add ACL support for FFS. From FreeBSD. 2020-05-16 18:31:45 +00:00
ad
f5ad84fdb3 PR kern/54759 (vm.ubc_direct deadlock when read()/write() into mapping of itself) 
- Add new flag UBC_ISMAPPED which tells ubc_uiomove() the object is mmap()ed
  somewhere.  Use it to decide whether to do direct-mapped copy, rather than
  poking around directly in the vnode in ubc_uiomove(), which is ugly and
  doesn't work for tmpfs.  It would be nicer to contain all this in UVM but
  the filesystem provides the needed locking here (VV_MAPPED) and to
  reinvent that would suck more.

- Rename UBC_UNMAP_FLAG() to UBC_VNODE_FLAGS().  Pass in UBC_ISMAPPED where
  appropriate.
 2020-04-23 21:47:07 +00:00
ad
23bf88000c Replace most uses of vp->v_usecount with a call to vrefcnt(vp), a function 
that hides the details and does atomic_load_relaxed().  Signature matches
FreeBSD.
 2020-04-13 19:23:17 +00:00
ad
c2e9cb9413 VFS_VGET(), VFS_ROOT(), VFS_FHTOVP(): give them a "int lktype" argument, to 
allow us to get shared locks (or no lock) on the returned vnode.  Matches
FreeBSD.
 2020-01-17 20:08:06 +00:00
chs
e406c140eb add a genfs method to allow a file system to limit the range of pages 
that are given to a single GOP_WRITE() call.  needed by ZFS.
 2018-05-28 21:04:37 +00:00
skrll
b240eba556 Remove some unnecessary duplicatioN 2017-08-27 06:18:16 +00:00
chs
fd34ea77eb remove checks for failure after memory allocation calls that cannot fail: 
kmem_alloc() with KM_SLEEP
  kmem_zalloc() with KM_SLEEP
  percpu_alloc()
  pserialize_create()
  psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.
 2017-06-01 02:45:05 +00:00
riastradh
7f7aad09bd Make VOP_RECLAIM do the last unlock of the vnode. 
VOP_RECLAIM naturally has exclusive access to the vnode, so having it
locked on entry is not strictly necessary -- but it means if there
are any final operations that must be done on the vnode, such as
ffs_update, requiring exclusive access to it, we can now kassert that
the vnode is locked in those operations.

We can't just have the caller release the last lock because some file
systems don't use genfs_lock, and require the vnode to remain valid
for VOP_UNLOCK to work, notably unionfs.
 2017-05-26 14:20:59 +00:00
riastradh
6fa7b15833 Change VOP_REMOVE and VOP_RMDIR to preserve lock/ref on dvp. 
No change to vp -- the plan is to replace the node by the
componentname in the vop parameters, and let all directory vops do
lookups internally.

Proposed on tech-kern with no objections:
https://mail-index.netbsd.org/tech-kern/2017/04/17/msg021825.html
 2017-04-26 03:02:47 +00:00
hannken
20bb034f5b Remove unused argument "nextp" from vfs_busy() and vfs_unbusy(). 
Remove argument "keepref" from vfs_unbusy() and add vfs_ref() where needed.
 2017-04-17 08:32:00 +00:00
hannken
ebb8f73b4b Add vfs_ref(mp) and vfs_rele(mp) to add or remove a reference to 
struct mount.  Rename vfs_destroy(mp) to vfs_rele(mp) and replace
incrementing mp->mnt_refcnt with vfs_ref(mp).
 2017-04-17 08:31:01 +00:00
riastradh
87fb32292e Make VOP_INACTIVE preserve vnode lock on return. 
Discussed on tech-kern:
https://mail-index.netbsd.org/tech-kern/2017/04/01/msg021751.html

Ride 7.99.68, a bumpy bus of incremental vfs improvements!
 2017-04-11 14:24:59 +00:00
hannken
9888a178c6 Update mtime when updating file size. 
PR kern/51762 (mtime not updated by open(O_TRUNC))
 2017-04-08 08:49:44 +00:00
riastradh
30509f8074 KASSERT(mutex_owned(vp->v_interlock)) in vnode iterator selector. 2017-04-01 19:35:56 +00:00
hannken
326db3aaf6 Add generic genfs_suspendctl() and use it for all file systems. 
Layered file systems need work.
 2017-02-17 08:31:23 +00:00
hannken
7139aab724 Remove now obsolete operation vcache_remove(). 
Welcome to 7.99.36
 2016-08-20 12:37:06 +00:00
riastradh
46e71c7d57 Make VOP_LINK return directory still locked and referenced. 
Ride 7.99.10 bump.
 2015-04-20 22:59:19 +00:00
maxv
6e39240181 Remove the 'cred' argument from bread(). Remove a now unused var in 
ffs_snapshot.c. Update the man page accordingly.

ok hannken@
 2015-03-28 19:24:04 +00:00
hannken
9837a8c2e9 Change v7fs to vcache. 2014-12-29 15:29:38 +00:00
hannken
b1a3c148f6 Defer deallocating unlinked inodes to v7fs_reclaim(). 
Remove v7fs_vnode_reload() and always use v7fs_inode_load().  No need
to search for a vnode we already hold a reference on.
 2014-12-29 15:28:58 +00:00
hannken
2d6e8595d5 v7fs_getattr: adjust size of symlinks by -1 to compensate the trailing NUL. 
Should fix the v7fs part of PR kern/48864.
 2014-12-29 15:28:08 +00:00
uebayasi
fe9a32c84e Define filesystem attributes with vfs dependency. 2014-10-11 06:42:18 +00:00
gson
f3b28c737c Whitespace fix 2014-08-08 19:14:45 +00:00
dholland
05d075b3ae Add VOP_FALLOCATE and VOP_FDISCARD to every vnode ops table I can 
find.

The filesystem ones all call genfs_eopnotsupp - right now I am only
implementing the plumbing and we can implement fallocate and/or
fdiscard for files later.

The device ones call spec_fallocate (which is also genfs_eopnotsupp)
and spec_fdiscard, which dispatches to the device-level op.

The fifo ones all call vn_fifo_bypass, which also ends up being
EOPNOTSUPP.
 2014-07-25 08:20:51 +00:00
maxv
23f76b6d00 An (un)privileged user can easily make the kernel dereference a NULL 
pointer.

The kernel allows 'data' to be NULL; it's the fs's responsibility to
ensure that it isn't NULL (if the fs actually needs data).

ok christos@
 2014-04-16 18:55:17 +00:00
hannken
6d285189fb Change all vfsops to use C99 designated initializers. 
No functional changes intended.
 2014-03-23 15:21:15 +00:00
hannken
97834f7ba0 Change vnode operation lookup to return the resulting vnode *vpp unlocked. 
Change cache_lookup() to return an unlocked vnode.

Discussed on tech-kern@

Welcome to 6.99.31
 2014-02-07 15:29:20 +00:00
hannken
04c776e5c8 Change vnode operations create, mknod, mkdir and symlink to return 
the resulting vnode *vpp unlocked.

Discussed on tech-kern@

Welcome to 6.99.30
 2014-01-23 10:13:55 +00:00
hannken
1139274440 Change vnode operations create, mknod, mkdir and symlink to keep the 
directory node dvp locked on return.

Discussed on tech-kern@

Welcome to 6.99.29
 2014-01-17 10:55:01 +00:00
christos
0b725b63c7 change the mountlist CIRCLEQ into a TAILQ 2013-11-23 13:35:36 +00:00
rmind
884c21d51e v7fs: replace malloc(9) with kmem(9), fix a memory leak and few missing 
mutex destruction cases in the error path.
 2013-11-20 23:44:23 +00:00
christos
b9bf0e6c5d prevent memory leak on error 
http://m00nbsd.net/ae123a9bae03f7dde5c6d654412daf5a.html
 2013-06-28 14:49:14 +00:00
plunky
5ec364d4d9 C99 section 6.7.2.3 (Tags) Note 3 states that: 
A type specifier of the form

	enum identifier

  without an enumerator list shall only appear after the type it
  specifies is complete.

which means that we cannot pass an "enum vtype" argument to
kauth_access_action() without fully specifying the type first.
Unfortunately there is a complicated include file loop which
makes that difficult, so convert this minimal function into a
macro (and capitalize it).

(ok elad@)
 2013-03-18 19:35:35 +00:00
msaitoh
b6e1d8e8d8 Fix off by one error. 2012-12-07 06:50:15 +00:00
joerg
15a60c04b8 Ensure that error is initialized in all code paths. 2012-06-13 22:56:50 +00:00
chs
8306a9eddf change vflushbuf() to take the full FSYNC_* flags. 
translate FSYNC_LAZY into PGO_LAZY for VOP_PUTPAGES() so that
genfs_do_io() can set the appropriate io priority for the I/O.
this is the first part of addressing PR 46325.
 2012-04-29 22:53:59 +00:00
njoly
ea834bf0c0 Make v7fs_getattr() report file flags, and adjust v7fs_setattr() to 
allow unsetting SF_APPEND flag.
 2012-03-31 21:44:28 +00:00
njoly
8725631c5c Pass operations flags to genfs_can_chtimes(), not file ones. 2012-03-22 22:16:21 +00:00
christos
fa04ef14fe don't re-define MIN 2012-03-21 15:55:50 +00:00
elad
0c9d8d15c9 Replace the remaining KAUTH_GENERIC_ISSUSER authorization calls with 
something meaningful. All relevant documentation has been updated or
written.

Most of these changes were brought up in the following messages:

    http://mail-index.netbsd.org/tech-kern/2012/01/18/msg012490.html
    http://mail-index.netbsd.org/tech-kern/2012/01/19/msg012502.html
    http://mail-index.netbsd.org/tech-kern/2012/02/17/msg012728.html

Thanks to christos, manu, njoly, and jmmv for input.

Huge thanks to pgoyette for spinning these changes through some build
cycles and ATF.
 2012-03-13 18:40:26 +00:00
njoly
f5adce712b Check parent directory write permission for DELETE operation. 
ok uch@.
 2012-01-27 12:22:02 +00:00
christos
1058c21f81 use getdisksize() 2011-11-13 23:08:47 +00:00
apb
464d645aeb Rename all static functions to have "v7fs_" prefix. Fixes a problem 
in the tools build, where the static link() and unlink() functions
conflicted with those declared in <unistd.h>.
 2011-08-14 09:02:07 +00:00
uch
f2404aeb3c Remove suspicious warning message. 2011-08-08 11:42:30 +00:00
dholland
66d63879a2 Insert casts to off_t to avoid 32-bit multiplication overflow when 
computing device offsets on 32-bit platforms. Should fix PR 45191.
 2011-08-03 16:21:52 +00:00
uch
b53b51d13e v7fs_lookup() fix return value. Pass t_vnops rename_dir(3) 
v7fs_setttr() check credential. Pass t_unpriv owner
v7fs_rename() reload inode(v7fs_vnode_reload). Pass t_vnops rename_reg_nodir
 2011-07-30 03:53:18 +00:00
uch
53172ceae2 When rename directory, check hierarchy. Pass t_vnops rename_dir(5) 2011-07-30 03:52:04 +00:00
uch
cba32d8fa9 Fix return vaule. Pass t_vnops:rename_dotdot, dir_noempty, rename_dir(6) 2011-07-30 03:51:53 +00:00
uch
fbcb953c8f Existing inode don't recycle. rump works. 2011-07-24 12:31:33 +00:00