Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Rename usr.sbin/mtree to usr.sbin/fmtree since it is not what /usr/sbin/mtree
actually is (which is usr.sbin/nmtree).

This has tricked me numerous times.

More -Wmissing-variable-declarations fixes.

In addition to adding missing `static' keywords:
- bin/dd: Pull in `extern.h' to guarantee consistency with source file.
- libexec/rpc.rusersd: Move shared globals into an extern.h.
- libexec/talkd: Move `debug' and `hostname' into extern.h.
- usr.bin/cksum: Put counters in extern.h, as they are used by ckdist/mtree.
- usr.bin/m4: Move `end_result' into extern.h.
- usr.sbin/services_mkdb: Move shared globals into an extern.h.

mtree should use getcwd() instead of getwd(). getcwd() is safer,
because it includes checks for the length of the buffer it uses.

Reviewed by: phk, cperciva
MFC after: 3 days

Added forgotten -w to the usage().

Get rid of "lineno: 0" in error messages from create mode.

Add -w(arning) flag which makes failure to look up uid/gid
a nonfatal warning instead of an error.

Give mtree(8) the ability to take [two -f spec] arguments and compare
the two specifications to each other.

Rename spec() and verify() functions to have mtree_ prefix and take
explicit file descriptor instead of assuming stdin.

Remove clause 3 in the copyrights (according to permission in src/COPYRIGHT)
Remove trailing whitespace.

Remove "register" keywords.
Use newspeak functions definitions.

Use __FBSDID over rcsid[]. Protect copyright[] where needed.

The -s option should not assume -U.

MFC After: 2 weeks

- Align the function prototype of the external `crc' function with
how `crc' is actually defined.
- Remove an unnecessary `extern' variable declaration.
Data type corrections:
- Define a variable which contains a file byte offset value as type
off_t as required by the `crc' function.
- Change the type of a variable carrying a CRC checksum from `u_long'
to `uint32_t'.
- Substitute the wrong `extern' variable declaration of `crc_total'
by putting a correct one in the shared header extern.h.
`crc_total' is defined as an `uint32_t', thus fixing
incorrect mtree checksums on big-endian LP64 machines.

fixup for WARNS=4.

de-__P()

Re-add -P option (for POSIX-like command line interface)

Restore standard symlink default, return -L, remove -P, add missing -q to getopt
This is part of whole subsystem fixing

Reviewed by: imp

Add -q. this will cause the warning messages about missing
directories to not be printed. This is from OpenBSD (and I think
NetBSD also) and makes our mtree more compatible with other BSDs.
This makes cross compilation easier than it was before. Other changes
will be needed to allow NetBSD or OpenBSD to cross build on FreeBSD,
but this is a start.

Reviewed by: andrey
Obtained from: OpenBSD
Concentric Red Circles by: My own stupidity

Revert the reversion of the default mtree behaviour. The mtree
command now follows symlinks again.

Requested by: jkh

Correct the usage() message as per rev 1.25 of mtree.8 .

Fix getopt string I forget

Revert back to original mtree default behaviour to not follow symlinks, to be
compatible with other *BSD camp. Add -L option to follow symlinks, so remove
-P option which is now default. The next step will be to add -L to building
process.

Asked-by: bde

Use -P instead of -S to specify that no symlinks should be followed.
There's no reason to make it different from cp(1), chmod(1), chown(1)
etc.

Requested by: sheldonh

Added a flag (-S) to mtree to specify that symlinks shouldn't be
followed. This allows type=link matches to work properly and match
the link itself, instead of the file/directory that the link is
pointing to.

Give mtree the ability to exclude files and directories from its traversal.

PR: 16944

$Id$ -> $FreeBSD$

Create a new flag, "nochange", which will specify that a directory is
to be created if it's missing, otherwise completely ignore it's modes and
owners. Primary intended targets: /usr/src and /usr/obj.

Adjust the 'not created: File exists' message to mention that it's a
directory that's the problem, otherwise it doesn't make sense.

I had created chown-style -L and -P flag to control logical/physical mode
(ie: whether symlinks were followed), but the nochange flag is enough to
get the blasted thing out of my hair so I took them back out.

Use err(3) instead of local redefinition.

Change FTS_PHYSICAL (not follow symlinks but return them)
to FTS_LOGICAL (follow symlinks and return their targets)

Because
1) In the real system there is a lot of symlinks nowdays over
/var, /spool, etc. Mtree can't do anything for them, i.e. change
permissions/owner. I.e. if you have /var/mail -> /somewhere
it will never be changed to group "mail" 775 like -current does now,
symlink totally confuses mtree.

2) Mtree can't deal with symlinks properly in any case (they are created
separately in other places now), so we lost no functionality by making
them invisible for mtree.

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

Add -U option which does the same things as -u except exits with 0
instead of 2 on MISMATCH.

1. Remove commented out CFLAGS+=-DDEBUG from Makefile

2. Clean up code so it compiles -Wall (except for sccsid's and copyright).
This included fixing several printf formats that where not correct,
and changing the data types of a few things.

3. Implement new option -i that produces indented mtree output files.

4. Implement new option -n that turns off directory comments.

5. Only emit /set records if something has changed since the last one.

This commit was generated by cvs2svn to compensate for changes in r1553,
which included commits to RCS files with non-trunk default branches.

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