- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

GC unused variables. Prefer NULL over 0 for pointers.

Remove trailing whitespace per mdoc lint warning

Disussed with: gavin
No objection from: doc
Approved by: joel
MFC after: 3 days

Change checkpath() to not exit on error. This is a prerequisite for
fixing the mount(8) "failok" option.

PR: 163668
Reviewed by: Garrett Cooper, delphij (previous version)

Fix SYNOPSIS.

Add a notice to the man page that batteries should be installed.

Allowed unionfs to use whiteout not supporting file system as
upper layer. Until now, unionfs prevents to use that kind of
file system as upper layer. This time, I changed to allow
that kind of file system as upper layer. By this change, you
can use whiteout not supporting file system (e.g., especially
for tmpfs) as upper layer. It's very useful for combination of
tmpfs as upper layer and read only file system as lower layer.

By difinition, without whiteout support from the file system
backing the upper layer, there is no way that delete and rename
operations on lower layer objects can be done. EOPNOTSUPP is
returned for this kind of operations as generated by VOP_WHITEOUT()
along with any others which would make modifica tions to the
lower layer, such as chmod(1).

This change is suggested by ed.

Submitted by: ed

Switch the default WARNS level for sbin/ to 6.

Submitted by: Ulrich Spörlein

Added whiteout behavior option. ``-o whiteout=always'' is default mode
(it is established practice) and ``-o whiteout=whenneeded'' is less
disk-space using mode especially for resource restricted environments
like embedded environments. (Contributed by Ed Schouten. Thanks)

Submitted by: Masanori Ozawa <ozawa@ongs.co.jp> (unionfs developer)
Reviewed by: jeff, kensmith
Approved by: re (kensmith)
MFC after: 1 week

Raise WARNS level to 6.

Fix parsing of -o uid and -o gid options, so that -o uidxx and -o gidxx
are not accepted.

Submitted by: daichi, Masanori OZAWA <ozawa ongs co jp>

Fix wrong markup and some wordsmithing.

Submitted by: ru

o Correct a function prototype.

Many, many thanks to Masanori OZAWA <ozawa@ongs.co.jp>
and Daichi GOTO <daichi@FreeBSD.org> for submitting this
major rewrite of unionfs. This rewrite was done to
try to solve many of the longstanding crashing and locking
issues in the existing unionfs implementation. This
implementation also adds a 'MASQUERADE mode', which allows
the user to set different user, group, and file permission
modes in the upper layer.

Submitted by: daichi, Masanori OZAWA
Reviewed by: rodrigc (modified for minor style issues)

Use MOPT_END in favor of MOPT_NULL, which better describes the purporse
of the macro.

Add a handy macro to represent null mount option, MOPT_NULL, and make
use of the macro in sbin/mount*'s, by replacing:

mopts[] = {
MOPT_STDOPTS,
{ NULL }
}

With:
mopts[] = {
MOPT_STDOPTS,
MOPT_NULL
}

This change will help to reduce the situation that we don't explicitly
initialize "struct mntopt"'s. It should not contribute to any
functional/logical changes as far as I can tell.

Sync program's usage() with manpage's SYNOPSIS.

Sort sections.

Scheduled mdoc(7) sweep.

Mention the vfs.usermount sysctl.

Obtained from: NetBSD via DragonFly BSD
MFC after: 3 days

Mechanically kill hard sentence breaks.

Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core, imp

style.Makefile(5):
Use WARNS?= instead of WARNS=.

Uniformly refer to a file system as "file system".

Approved by: re

s/filesystem/file system/g as discussed on -developers

Don't depend on namespace pollution in sys/mount.h and
include sys/uio.h.

Now that the kernel is able to load modules itself,
remove all the code which was trying to do so.
This code was nasty in several ways, it was hiding
the kernel bug where the kernel was unable to properly
load a module, and it was quitting if it wasn't able
to load the module. The consequence is that an ABI
breakage of the vfsconf API would have broken *every*
mount utility.

The .Nm utility

nmount'ify unionfs further by using separate options instead
of passing a flags mount options. This removes the include of
sys/fs/unionfs/union.h in mount_unionfs as it should be.

Reviewed by: phk

Convert mount_unionfs(8) to nmount.

o __P removed
o main prototype removed

Default to WARNS=2.
Binary builds that cannot handle this must explicitly set WARNS=0.

Reviewed by: mike

Remove whitespace at EOL.

Actually rename FDESC, PORTAL, UMAP and UNION file systems.

OK'ed by: bp

Missed one mount_null(8) -> mount_nullfs(8) in previous commit.

Rename (after a repo-copy) some mount(8) programs:

mount_fdesc -> mount_fdescfs
mount_null -> mount_nullfs
mount_portal -> mount_portalfs
mount_umap -> mount_umapfs
mount_union -> mount_unionfs

- FDESC, FIFO, NULL, PORTAL, PROC, UMAP and UNION file
systems were repo-copied from sys/miscfs to sys/fs.

- Renamed the following file systems and their modules:
fdesc -> fdescfs, portal -> portalfs, union -> unionfs.

- Renamed corresponding kernel options:
FDESC -> FDESCFS, PORTAL -> PORTALFS, UNION -> UNIONFS.

- Install header files for the above file systems.

- Removed bogus -I${.CURDIR}/../../sys CFLAGS from userland
Makefiles.

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

Set the default manual section for sbin/ to 8.

mdoc(7) police: Er macro usage cleanup.

mdoc(7) police: use the new features of the Nm macro.

Use Fx macro wherever possible.

mount* fixes from Martin Blapp <mb@imp.ch>:

Made mount more userfriendly (bad slashes are now filtered out)
and we remove in mount_nfs trailing slashes if there are any.

Fixed mount_xxx binarys to resolve with realpath(3)
the mountpoint.

Translate the deprecated nfs-syntax with '@' to ':' .
The ':' syntax has now precedence, but '@' still works.
Notify the user that the '@' syntax should not be used.

PR: 7846
PR: 13692
Submitted by: Martin Blapp <mb@imp.ch>
Reviewed by: phk

$Id$ -> $FreeBSD$

User reports that using mount_null destroyed his filesystem, I reply
that nullfs really doesn't work, he askes why this isn't noted for the
"dangerous" filesystems, I go "hmmm."

.Nm mount_union -> .Nm.

Removed definition of _NEW_VFSCONF. The new vfsconf interface is now
the default.

Fixed an example.

Protect against target containing a '%' which might be misinterpreted
by err(3).

PR: bin/3864

Typo in previous change.

Use realpath() on the source as well as the target otherwise it can be
impossible to unmount a union which was mounted with a relative pathname.

compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.

Merge from Lite2 (use new getvfsbyname() and mount(2) interface)

Don't use __dead or __pure in user code. They were obfuscations
for gcc >= 2.5 and no-ops for gcc >= 2.6. Converted to use __dead2
or __pure2 where it wasn't already done, except in math.h where use
of __pure was mostly wrong.

Disable setuid permission for mount_union(1).

This covers the security problem descibed in SA-96:10 and Jeff says that
when we upgrade to Lite2 (which fixes this problem), mount no longer needs
to be setuid, so we'll never be going back.

Submitted by: hsu
Reviewed by: pst

Get rid of the last vestiges of the old MOUNT_* constants in the
mount_* programs. While we're at it, collapse the four now-identical
mount programs for devfs, fdesc, kernfs, and procfs into links to
a new mount_std(8) which can mount any really generic filesystem
such as these when called with the appropriate argv[0].

Also, convert the mount programs to use sysexits.h.

Another round of various man page cleanups.

Guess what

Add support for filesystem-specific `-o' options, and re-implement the
most common cd9660 and nfs options like God intended them. (It is now
possible to say

mount -o ro,soft,bg,intr there:/foo/bar /foo/bar

again.) This whole getmntopt() business is an incredible botch;
it never should have been anything more than a wrapper around
getsubopt(3). Because if the way the current hackaround is implemented,
options which take arguments (like the old `rsize' and `wsize') are still
unavailable, and must be accessed the new, broken way.

(It's unimaginable how Berkeley managed to screw up one of the few things
about NFS that Sun actually got right to begin with!)

Automatically load NFS and a bevy of other filesystems.

Convert to our man installation style. Also fixed long-standing bug
in `fastboot'/`fasthalt' in which the interpreter would hang around
after `reboot' or `halt' is run, causing an irritating ``Killed'' message.

BSD 4.4 Lite sbin Sources

Note: XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.