Merge from head up to r188941 (last revision before the USB stack switch)

Add the possibility to specify "-o force" with "mdconfig -du".

Reviewed by: scottl
Approved by: rwatson (mentor)
Sponsored by: FreeBSD Foundation

Add -v (verbose) option to -l command, to show size and backing store
of all md devices at one time.

Approved by: phk
MFC after: 2 weeks

Fix exit code when using -l on a non-existent md(4) device.

PR: conf/116177
Submitted by: Remi Guyomarch <rguyom@pobox.com>
MFC after: 3 days

Kris suggested that swap is a better choice as a default than malloc.

MFC: 1 week

[Found the original diff I made, see previous commit for other part]
Assume '-a' and '-t malloc' flags for '-s <size>' (malloc ramdisk) if not
specified.

Reviewed by: phk (some time ago)
MFC: 1 week

Make attach the default for -f. That way

mdconfig -f image

works like a charm.

Reviewed by: phk (some time ago)
MFC: 1 week

Unbreak the build.

For now, bring back some of the old bits as a fix for specifying md(4)
device number at creation time with -u option. Together with XMLizing
mdconfig(8), I broke this functionality.

This change is t

For now, bring back some of the old bits as a fix for specifying md(4)
device number at creation time with -u option. Together with XMLizing
mdconfig(8), I broke this functionality.

This change is temporary. Complete fix will be commited soon.

Approved by: cognet (mentor)

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Teach md(4) and mdconfig(8) how to understand XML. Right now there won't be
a problem with listing large number of md(4) devices. Either 'list' or
'query' mode uses XML.

Additionally, new functional

Teach md(4) and mdconfig(8) how to understand XML. Right now there won't be
a problem with listing large number of md(4) devices. Either 'list' or
'query' mode uses XML.

Additionally, new functionality was introduced. It's possible to pass
multiple devices to -u:

# ./mdconfig -l -u md0,md1

Approved by: cognet (mentor)

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Keep proper order of includes. Additionally, sort them. Make functions used
in that file static.

Approved by: cognet (mentor)

Use kld(3) for loading geom_md.ko.

Sort the list results by the unit number. The list returned by the
kernel is in the order the devices were made, which is not useful to
the user. Also, remove the "%d more" test since the kernel does

Sort the list results by the unit number. The list returned by the
kernel is in the order the devices were made, which is not useful to
the user. Also, remove the "%d more" test since the kernel does not
return the complete count in md_pad[0] (maybe it should?).

Submitted by: Wojciech A. Koszek

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Rename GEOM class kernel module g_md.ko to geom_md.ko for consistency
with the rest.

mdconfig.c: Simplify mdmaybeload() function.
mdioctl.h: Removed (now unused) #define.
loader.conf: Sort GEOM clas

Rename GEOM class kernel module g_md.ko to geom_md.ko for consistency
with the rest.

mdconfig.c: Simplify mdmaybeload() function.
mdioctl.h: Removed (now unused) #define.
loader.conf: Sort GEOM classes properly.

OK'ed by: phk

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When using files as backing stores for devices, and the user has requested the
device be created read+write, check to see if the backing store is read only
through the use of the access(2) system cal

When using files as backing stores for devices, and the user has requested the
device be created read+write, check to see if the backing store is read only
through the use of the access(2) system call. If this check fails returning
EACCES, EPERM or EROFS then gracefully downgrade the access to read only. Also
print a warning message to stderr, informing the user that the access mode
they requested is not available.

This behavior used to be handled by md(4) but was changed in revision 1.154

Discussed with: pjd, phk, Dario Freni <saturnero at freesbie dot org>
Reviewed by: phk

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We can specify device size in bytes. Document this in usage.

Document the terabyte "-s" parameter in the usage string.
Split the usage line to not exceed 80 chars.

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

Allow to specify device size in bytes.

MFC after: 1 week

Rewrite piece of code which I committed some time ago that allows to
show file name for 'mdconfig -l -u <x>' command.
This allows to preserve API/ABI compatibility with version 0 (that's why
I change

Rewrite piece of code which I committed some time ago that allows to
show file name for 'mdconfig -l -u <x>' command.
This allows to preserve API/ABI compatibility with version 0 (that's why
I changed version number back to 0) and will allow to merge this change
to RELENG_5.

MFC after: 5 days

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Sync usage() with manpage SYNOPSIS and code.

For file backed md(4) devices output their source file via
'mdconfig -l -u <unit>'.
Bump version number, as this change breaks ABI/API.

If there aren't any devices to list, output nothing instead of an
empty line. This is consistent with other utilities.

While I'm here, remove artifacts of the previous list implementation.

- Make md(4) 64-bit clean.
After this change it should be possible to use very big md(4) devices.
- Clean up and simplify the code a bit.
- Use humanize_number(3) to print size of md(4) devices.
-

- Make md(4) 64-bit clean.
After this change it should be possible to use very big md(4) devices.
- Clean up and simplify the code a bit.
- Use humanize_number(3) to print size of md(4) devices.
- Add 't' suffix which stands for terabyte.
- Make '-S' to really work with all types of devices.
- Other minor changes.

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add support for documented readonly option...
also print out the option that is unknow so that the user knows what (s)he
did wrong..

MFC after: 3 days