CVS log for src/external/cddl/osnet/sys/sys/vnode.h

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Keyword substitution: kv
Default branch: MAIN

In vattr_init_mask() check for va_flags and if set add to the mask of
to the things that setattr is interested in.
Fixes chflags(2) on ZFS.

Thanks riastradh@ for fix.

PR kern/56316: vn_open doesn't follow symlinks

remove setting of O_NOFOLLOW. restores ZFS being able
to open devices via symlinks again.

Add containment for the cloning devices hack in vn_open.

Cloning devices (and also things like /dev/stderr) work by allocating
a struct file, stuffing it in the file table (which is a layer
violation), stuffing the file descriptor number for it in a magic
field of struct lwp (which is gross), and then "failing" with one of
two magic errnos, EDUPFD or EMOVEFD.

Before this commit, all callers of vn_open in the kernel (there are
quite a few) were expected to check for these errors and handle the
situation. Needless to say, none of them except for open() itself did,
resulting in internal negative errnos being returned to userspace.

This hack is fairly deeply rooted and cannot be eliminated all at
once. This commit adds logic to handle the magic errnos inside
vn_open; now on success vn_open returns either a vnode or an integer
file descriptor, along with a flag that says whether the underlying
code requested EDUPFD or EMOVEFD. Callers not prepared to cope with
file descriptors can pass NULL for the extra return values, in which
case if a file descriptor would be produced vn_open fails with
EOPNOTSUPP.

Since I'm rearranging vn_open's signature anyway, stop exposing struct
nameidata. Instead, take three arguments: an optional vnode to use as
the starting point (like openat()), the path, and additional namei
flags to use, restricted to NOCHROOT and TRYEMULROOT. (Other namei
behavior, e.g. NOFOLLOW, can be requested via the open flags.)

This change requires a kernel bump. Ride the one an hour ago.
(That was supposed to be coordinated; did not intend to let an hour
slip by. My fault.)

remove extra typedef for vnode_t done in <sys/vnode.h>

Replace vp->v_count with vrefcnt(vp) and
remove now unneeded "#define v_count ...".

Sync with HEAD

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.

Sync with HEAD

Synch with HEAD

Allow zfs_vn_rdwr() with "rw == UIO_READ" too.

Sync with HEAD

merge a new version of the CDDL dtrace and ZFS code.
this changes the upstream vendor from OpenSolaris to FreeBSD,
and this version is based on FreeBSD svn r315983.

in addition to the 10 years of improvements from upstream,
this version also has these NetBSD-specific enhancements:
 - dtrace FBT probes can now be placed in kernel modules.
 - ZFS now supports mmap().

Fix vattr_init_mask: mode is mode_t, not u_short.

Fixes fs/vfs/t_vnops:zfs_attrs test.

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

Vnode API cleanup pass 1.

- Make these defines and functions private to vfs_vnode.c:

  VC_MASK, VC_LOCK, DOCLOSE, VI_IANCTREDO and VI_INACTNOW
  vclean() and vrelel()

- Remove the long time unused lwp argument from vrecycle().

- Remove vtryget(), it is responsible for ugly hacks and doesn't
  look that effective.

Presented on tech-kern.

Welcome to 6.99.25

don't use IO_APPEND. In the vdev_file.c we end up appending to our virtual
file as a filesystem! With this change:

    $ dd if=/dev/zero of=disk1 count=266144
    $ zpool create crap $PWD/disk1

mounts /crap and it seems to work ok, until I try unmounting

Hack: Instead of dying in vrele with a kernel assertion, detect that the
usecount of the vnode is 0 and treat it as a noop. This is wrong, buf it
get us through the VN_RELE() after the close in vdev_file.c

Catchup with rmind-uvmplock merge.

v_interlock is now a pointer to kmutex_t, use it as one.
fixes many of the 5.99.53 build issues in zfs, but not all of them.

Sync with HEAD

fix kobj_open_file_vnode()

patch from haad

Add some more solaris vnode defs for zfs_ctldir.

Introduce struct pathbuf. This is an abstraction to hold a pathname
and the metadata required to interpret it. Callers of namei must now
create a pathbuf and pass it to NDINIT (instead of a string and a
uio_seg), then destroy the pathbuf after the namei session is
complete.

Update all namei call sites accordingly. Add a pathbuf(9) man page and
update namei(9).

The pathbuf interface also now appears in a couple of related
additional places that were passing string/uio_seg pairs that were
later fed into NDINIT. Update other call sites accordingly.

Clean up vnode lock operations pass 2:

VOP_UNLOCK(vp, flags) -> VOP_UNLOCK(vp): Remove the unneeded flags argument.

Welcome to 5.99.32.

Discussed on tech-kern.

Add NetBSD build glue to build new zfs version 22 sources.

Apply NetBSD changes to DTrace.

Ok with core@.

Add the FreeBSD 8-RC1 changes for DTrace.

Ok with core@.

Add NetBSD Solaris compat code and reachover Makefiles. Most of code written
by Andrew Doran some of it by me.

This is still work in progress code. There are known issues. Zfs can panic
your system still. I will commit integration bits and needed kernel bits
later when we fix most obvious bugs. This code need some support from our
kernel which I will commit in a separate patch and therefore itnot work yet.

Issues:

1) Support for openat/fstatat syscalls.
2) getnewvnode locking against myself panic when reclaiming vnodes
3) Replace solaris taskq with our workqueue which doesn't need to alloc
   anything during work.
4) Investigate problems with NO_WAIT allocations.

Oked by core@ and ad@.