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MFHead @347527

Sponsored by: The FreeBSD Foundation

Fix libsbuf sbuf_printf_drain symbol version

(Introduced incorrectly in r347229 earlier today.)

As pointed out by kevans, 1.6 should be used for FreeBSD 13, like r340383.

Submitted by: kevans
Repo

Fix libsbuf sbuf_printf_drain symbol version

(Introduced incorrectly in r347229 earlier today.)

As pointed out by kevans, 1.6 should be used for FreeBSD 13, like r340383.

Submitted by: kevans
Reported by: kib
Reviewed by: jilles
X-MFC-with: r347229
Differential Revision: https://reviews.freebsd.org/D20187

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device_printf: Use sbuf for more coherent prints on SMP

device_printf does multiple calls to printf allowing other console messages to
be inserted between the device name, and the rest of the messag

device_printf: Use sbuf for more coherent prints on SMP

device_printf does multiple calls to printf allowing other console messages to
be inserted between the device name, and the rest of the message. This change
uses sbuf to compose to two into a single buffer, and prints it all at once.

It exposes an sbuf drain function (drain-to-printf) for common use.

Update documentation to match; some unit tests included.

Submitted by: jmg
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D16690

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sbuf(3): expose sbuf_{clear,get,set}_flags(3) via libsbuf

These functions were added to sbuf(9) in r279992, but never
exposed to userspace. Expose them now so they can be used/tested.

MFC after: 2

sbuf(3): expose sbuf_{clear,get,set}_flags(3) via libsbuf

These functions were added to sbuf(9) in r279992, but never
exposed to userspace. Expose them now so they can be used/tested.

MFC after: 2 months
Sponsored by: Dell EMC Isilon

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Expose the sbuf_putbuf() symbol to libsbuf. There are a few other symbols
that are present but not exposed, like get/set/clear flags, not sure if they
need to be exposed at this point.

Sponsored by

Expose the sbuf_putbuf() symbol to libsbuf. There are a few other symbols
that are present but not exposed, like get/set/clear flags, not sure if they
need to be exposed at this point.

Sponsored by: Netflix

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Catch up with HEAD (r280229-r284686).

Merge ^/head r284188 through r284643.

Merge from head

Add support for reading MAM attributes to camcontrol(8) and libcam(3).

MAM is Medium Auxiliary Memory and is most commonly found as flash
chips on tapes.

This includes support for reading attribute

Add support for reading MAM attributes to camcontrol(8) and libcam(3).

MAM is Medium Auxiliary Memory and is most commonly found as flash
chips on tapes.

This includes support for reading attributes and decoding most
known attributes, but does not yet include support for writing
attributes or reporting attributes in XML format.

libsbuf/Makefile:
Add subr_prf.c for the new sbuf_hexdump() function. This
function is essentially the same function.

libsbuf/Symbol.map:
Add a new shared library minor version, and include the
sbuf_hexdump() function.

libsbuf/Version.def:
Add version 1.4 of the libsbuf library.

libutil/hexdump.3:
Document sbuf_hexdump() alongside hexdump(3), since it is
essentially the same function.

camcontrol/Makefile:
Add attrib.c.

camcontrol/attrib.c:
Implementation of READ ATTRIBUTE support for camcontrol(8).

camcontrol/camcontrol.8:
Document the new 'camcontrol attrib' subcommand.

camcontrol/camcontrol.c:
Add the new 'camcontrol attrib' subcommand.

camcontrol/camcontrol.h:
Add a function prototype for scsiattrib().

share/man/man9/sbuf.9:
Document the existence of sbuf_hexdump() and point users to
the hexdump(3) man page for more details.

sys/cam/scsi/scsi_all.c:
Add a table of known attributes, text descriptions and
handler functions.

Add a new scsi_attrib_sbuf() function along with a number
of other related functions that help decode attributes.

scsi_attrib_ascii_sbuf() decodes ASCII format attributes.

scsi_attrib_int_sbuf() decodes binary format attributes, and
will pass them off to scsi_attrib_hexdump_sbuf() if they're
bigger than 8 bytes.

scsi_attrib_vendser_sbuf() decodes the vendor and drive
serial number attribute.

scsi_attrib_volcoh_sbuf() decodes the Volume Coherency
Information attribute that LTFS writes out.

sys/cam/scsi/scsi_all.h:
Add a number of attribute-related structure definitions and
other defines.

Add function prototypes for all of the functions added in
scsi_all.c.

sys/kern/subr_prf.c:
Add a new function, sbuf_hexdump(). This is the same as
the existing hexdump(9) function, except that it puts the
result in an sbuf.

This also changes subr_prf.c so that it can be compiled in
userland for includsion in libsbuf.

We should work to change this so that the kernel hexdump
implementation is a wrapper around sbuf_hexdump() with a
statically allocated sbuf with a drain. That will require
a drain function that goes to the kernel printf() buffer
that can take a non-NUL terminated string as input.
That is because an sbuf isn't NUL-terminated until it is
finished, and we don't want to finish it while we're still
using it.

We should also work to consolidate the userland hexdump and
kernel hexdump implemenatations, which are currently
separate. This would also mean making applications that
currently link in libutil link in libsbuf.

sys/sys/sbuf.h:
Add the prototype for sbuf_hexdump(), and add another copy
of the hexdump flag values if they aren't already defined.

Ideally the flags should be defined in one place but the
implemenation makes it difficult to do properly. (See
above.)

Sponsored by: Spectra Logic Corporation
MFC after: 1 week

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IFC @ r254014

IFC @253398

Merge fresh head.

sync from head

Add sbuf_start_section and sbuf_end_section to the libsbuf symbol map.

MFC after: 1 month

IFC @ r222256

MFC

Bump shlib version
Instigate symbol versioning
Pray that I don't break the build.