Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

Register the bad read before bailing on terminal errors.

This way running recoverdisk in a loop will not get stuck on a bad
block which causes the disk or SD card detach.

Don't send clear screen until we are committed to run.

Add two options to recoverdisk(1) inspired by a recent
data-archæology project:

-u pattern

Fill unread parts of the output with pattern.
Default pattern is "_UNREAD_", empty pattern disables.

-v

Fancy status reporting using ANSI escapes and UTF-8

recoverdisk(1): fclose() file supplied via '-r readlist' parameter when
it's no longer needed

PR: 204952
Reported by: David Binderman <dcb314@hotmail.com>
MFC after: 5 days

SPDX: use the Beerware identifier.

sbin: ake use of our rounddown() macro when sys/param.h is available.

No functional change.

Correct type for DIOCGSTRIPESIZE. Without this there
would be a stack overflow which will crash the program
later.

PR: bin/176953
Submitted by: r4721 tormail org
MFC after: 3 days

Use stripesize as smallest block size if it's available.

MFC after: 2 weeks

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.

recoverdisk(8): treat output file consistently and abort on EINVAL

This improves usability a little as we no longer require using touch.
Also reword the manpage wrt. parameters and fix usage() [1]

With no media in a cd(4) drive, the reads will loop producing EINVAL,
abort in that case [2].

Document the shortcoming of sectorsize and MAXPHYS (a quick solution
to this might be having MAXPHYS as the "bigsize", in short testing it
didn't make a difference on throughput).

Submitted by: arundel [1]
PR: bin/154528 [2]

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Save (empty) worklist at successful completion

Also use %zu to print the allocation size when malloc(3) fails.

Discussed with: phk

Fix printf warnings on amd64 etc.

Some improvements to recoverdisk

Bail on ENXIO, you won't get any further any way.

Submitted by: tobez

- Import the HEAD csup code which is the basis for the cvsmode work.

Improve reporting in recoverdisk a good deal.

Submitted by: Ulrich Spoerlein <uspoerlein@gmail.com>
PR: 111630

Make recoverdisk compile on amd64 and possibly other 64bit archs.
Bump WARNS to 6.

PR: amd64/97566
Reviewed by: phk@
MFC after: 3 days

o Take an account a media sectorsize for medium and bigsize calculation.
o Introduce -r and -w keys which allow to load and save a worklist.
o Replace README by man page.

PR: bin/96677
Submitted by: Ulrich Spoerlein
Approved by: phk
MFC after: 1 month

Extend utility to allow recovering single file from the deffective
media.

MFC after: 2 weeks

Use %zu to format size_t instead of %jd and an intmax_t cast.

Approved by: hamlet

Stop amd64 warnings.

Only print progress statistics once per second.

This is a small tool which will read an entire disk(partition) using
1M blocks and optionally write the read data to a file or disk.

If a read error happens, the 1M block gets put on the end of the worklist
and will be retried with 64k blocksize.

If a read error happens again, the 64k block gets put at the end of the
worklist and will be retried with single sector reads.

The program keeps trying until you stop it.

You can refresh a disk:

recoverdisk /dev/ad1 /dev/ad1

or salvage a floppy:

recoverdisk /dev/fd0 myfloppy.flp