- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC r292005:

Call va_end on ap when vsnprintf fails in run_cmd(..) to clean up
the variable state

Reported by: cppcheck
Sponsored by: EMC / Isilon Storage Division

MFC r272885:
Do not add late flag when file= is specified because it has a bad
side-effect. The specified file should exist before the fstab line.

MFC r259677: swapon: Fix buffer overflow when configuring swap on GBDE.

PR: bin/184950

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

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

Style clean-ups.

Reviewed by: md5

Enable "late" option when a file= option is specified in /etc/fstab.
The file= option requires rw mount where the backing store exists but
it does not work because rc.d/swap runs before rc.d/fsck.
Reported by: wblock

Make two buffer variables static for now. It is not safe to
reference stack memory after return.

MFC after: 2 weeks

Plug a memory leak.

Correct a typo in comment.

- Modify swapon(8) so that it uses most of geli(8) defaults for swap,
which is presently: AES-XTS, no authentication. Create provider
with pagesize as sectorsize by default.
- Rewrite parsing code for geli(8)-backed swap options, now options
are required to be exact match, and unrecognized options will trigger
a warning.
- Don't initialize GELI device if it's already initialized. This
restores previous behavior.
- Don't duplicate file descriptor when working with geli(8) and
gbde(8) as there is no need to communicate with the utility other
than exit status.
- When calling swap_on_off_* routines, which_prog can only be SWAP_ON
or SWAP_OFF. Eliminate unneeded case branches by replacing switch
with if's.
- Plug a few memory leaks.

Reviewed by: hrs (but bugs are mine)
MFC after: 1 week
X-MFC-with: r252310, r252332, r252345

Fix build with gcc.

Fix build.

Spotted by: gjb

- Add vnode-backed swap space specification support. This is enabled when
device names "md" or "md[0-9]*" and a "file" option are specified in
/etc/fstab like this:

md none swap sw,file=/swap.bin 0 0

- Add GBDE/GELI encrypted swap space specification support, which
rc.d/encswap supported. The /etc/fstab lines are like the following:

/dev/ada1p1.bde none swap sw 0 0
/dev/ada1p2.eli none swap sw 0 0

.eli devices accepts aalgo, ealgo, keylen, and sectorsize as options.

swapctl(8) can understand an encrypted device in the command line
like this:

# swapctl -a /dev/ada2p1.bde

- "-L" flag is added to support "late" option to defer swapon until
rc.d/mountlate runs.

- rc.d script change:

rc.d/encswap -> removed
rc.d/addswap -> just display a warning message if $swapfile is defined
rc.d/swap1 -> renamed to rc.d/swap
rc.d/swaplate -> newly added to support "late" option

These changes alleviate a race condition between device creation/removal
and swapon/swapoff.

MFC after: 1 week
Reviewed by: wblock (manual page)

Add missing static keywords for global variables to tools in sbin/.

These tools declare global variables without using the static keyword,
even though their use is limited to a single C-file, or without placing
an extern declaration of them in the proper header file.

Build swapon with WARNS=6.

Don't use a variable called stat, because it collides with stat(2).

Add new option -F to specify alternative location of the /etc/fstab
file.

MFC after: 1 month

Add a -q flag to swapon(8) to suppress informational messages. Use it in
rc.d.
Note: errors are not affected by this flag.

- Change the meaning of -h flag from giving the output in megabytes to
giving the output in a human-readable form. This behaviour is consistent
with most of system tools.
- Add -m and -g options to give output in megabytes and gigabytes
respectively.

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

Don't include sys/user.h merely for its side-effect of recursively
including other headers.

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

Approved by: core, imp

Make NULL a (void*)0 whereever possible, and fix the warnings(-Werror)
that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).

There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.

Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".

Tested on: i386 sparc64

Use __FBSDID() to quiet GCC 3.3 warnings.

- Add a clearer error message for the case where swapon hits the
NSWAPDEV limit.
- Don't warn about devices that are not in use in 'swapoff -a'.
- Re-add behavior mistakenly removed in revision 1.44:
If using 'swapon -a', do not warn if the device is already in use.

PR: 46633
Submitted by: Andy Farkas <andyf@speednet.com.au> (in part)
Reviewed by: mike (mentor)

Remove hack from rev 1.15; getbsize(3)'s original interface has been
restored.

Make the first argument to getbsize(3) a `size_t *'. This is a hack
since getbsize(3) should have `int *' as its first parameter.

Add 'swapctl' - as a hardlink to swapon/swapoff, and augment swapon with
swapctl functionality. The idea is to create a swapctl command that is
fairly close to the OpenBSD and NetBSD version. FreeBSD does not implement
swap priority (and it would be a mistake if we did) so we didn't bother with
that part of it.

Submitted by: Eirik Nygaard <eirikn@bluezone.no>
Augmented by: dillon (extensively)
Reviewed by: David Schultz <dschultz@uclink.Berkeley.EDU>

This is David Schultz's swapoff code which I am finally able to commit.
This should be considered highly experimental for the moment.

Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU>
MFC after: 3 weeks

o remove __P
o remove main prototype

Remove 'register' keyword.
It does not help modern compilers, and some may take some hit from it.
(I also found several functions that listed *every* of its 10 local vars with
"register" -- just how many free registers do people think machines have?)

Include missing header files which define functions for which gcc has
builtins (e.g., exit, strcmp).

Add include of errno.h where needed, remove extern int errno where not.

These commits were inspired by a similar commit to netbsd.

$Id$ -> $FreeBSD$

.Nm swapon -> .Nm.
Sort #includes. Add rcsid.

Use warn(3).

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

Make the noauto flag usable for swap devices too. Closes PR#1542
Submitted-By: David Leonard <d@scry.dstc.edu.au>

Take out special error message for EINVAL...we really do want it to be
"invalid argument".

Fix -Wall warnings.

Yes I have better things to do, but just now I'm waiting...

This commit was generated by cvs2svn to compensate for changes in r1558,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite sbin Sources

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