MFC r306325, r306329-r306330, r306333, r306620-r306622, r307387, r307544, r307550, r318137, r319125, r319295

r306325 by marcel:
Replace the use of linker sets with constructors for both the
formats and schemes.  Formats and schemes are registered at
runtime now, rather than collected at link time.

r306329 by marcel:
Eliminate the use of EDOOFUS.  The error code was used to signal
programming errors, but is really a poor substitute for assert.
And less portable as well.

r306330 by marcel:
Avoid depending on the <sys/endian.h> header for le*enc and be*enc.
Not only is the header unportable, the encoding/decoding functions
are as well.  Instead, duplicate the handful of small inlines we
need into a private header called endian.h.

Aside: an alternative approach is to move the encoding/decoding
functions to a separate system header.  While the header is still
nonportable, such an approach would make it possible to re-use the
definitions by playing games with include paths. This may be the
preferred approach if more (build) utilities need this.  This
change does not preclude that.  In fact, it makes it easier.

r306333 by marcel:
Portability changes:
1.  macOS nor Linux have MAP_NOCORE nor MAP_NOSYNC. Define as 0.
2.  macOS doesn't have SEEK_DATA nor SEEK_HOLE. Define as -1
    so that lseek will return -1 (with errno set to EINVAL).
3.  gcc correctly warns that error is assigned but not used in
    image_copyout_region().  Fix by returning on the first error.

r306620 by marcel:
Replace STAILQ with TAILQ. TAILQs are portable enough that they can
be used on both macOS and Linux. STAILQs are not. In particular,
STAILQ_LAST does not next on Linux. Since neither STAILQ_FOREACH_SAFE
nor TAILQ_FOREACH_SAFE exist on Linux, replace its use with a regular
TAILQ_FOREACH. The _SAFE variant was only used for having the next
pointer in a local variable.

r306621 by marcel:
Prefer <stdint.h> over <sys/types.h>. While here remove redundant
inclusion of <sys/queue.h>.

Move the inclusion of the disk partitioning headers out of order
and inbetween standard headers and local header. They will change
in a subsequent commit.

r306622 by marcel:
Replace OFF_MAX with INT64_MAX. The former is defined on Linux.

r307387 by marcel:
Switch to using the portable partition scheme headers.

r307544 by marcel:
 o  Provide a private definition for UUIDs (mkimg_uuid_t) because
    UUIDs are not portable.
 o  Move mkimg_uuid() to a new file and merge both gpt_uuid_enc()
    and vhd_uuid_enc() into a single mkimg_uuid_enc() that lives
    in the same file.
 o  Move the OS-specific implementation of generating a UUID to
    osdep_uuidgen() and provide the implementations for FreeBSD,
    macOS and Linux.
 o  Expect the partitioning scheme headers to be found by having
    a search to the directory in which the headers live. This
    avoids conflicts on non-FreeBSD machines.

r307550 by imp:
Add a new flag to mkimg (-a num) to specify the active partition for
those partitioning schemes that have this concept. Implement it as an
override for mbr's setting 0x80 in the flags for the first partition
when we have boot code.

Differential Revision: https://reviews.freebsd.org/D4403

r318137:
mkimg: Add -C argument to specify maximum capacity

Add a -C option to specify a maximum capacity for the final image file.
It is useful to control the size of the generated image for sdcard or
when we will add dynamic size partition.

Add --capacity which is a shorthand to define min and max capacity at
the same time.

Reviewed by:	bapt, marcel, wblock (manpages)
Sponsored by:	Gandi.net
Differential Revision:	https://reviews.freebsd.org/D10509

r319125:
mkimg: Correct an off by one error in the PMBR size

The PMBR last sector should be number of sector - 1 (As stated in UEFI Spec
2.6 page 118 table 17).
This fixes warning printed by linux tools like parted or fdisk.

Sponsored by:	Gandi.net

r319295 by ngie:
Update the usr.bin/mkimg golden test output files after ^/head@r319125

^/head@r319125 changed the location of the backup pmbr, requiring the
output files to be regenerated, since they're binary disk dumps.

The output files were regenerated with "make rebase"--fixed in
^/head@r319294.

MFC with:	r319125, r319294
PR:		219673
Sponsored by:	Dell EMC Isilon

1 files changed, 6 insertions, 22 deletions

diff --git a/usr.bin/mkimg/vhd.c b/usr.bin/mkimg/vhd.c
index c4c1d1d..31a527a 100644
--- a/usr.bin/mkimg/vhd.c
+++ b/usr.bin/mkimg/vhd.c
@@ -27,15 +27,14 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#include <sys/types.h>
-#include <sys/endian.h>
 #include <sys/errno.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #include <unistd.h>
-#include <uuid.h>
 
+#include "endian.h"
 #include "image.h"
 #include "format.h"
 #include "mkimg.h"
@@ -92,7 +91,7 @@ struct vhd_footer {
 #define	VHD_DISK_TYPE_DYNAMIC	3
 #define	VHD_DISK_TYPE_DIFF	4
 	uint32_t	checksum;
-	uuid_t		id;
+	mkimg_uuid_t	id;
 	uint8_t		saved_state;
 	uint8_t		_reserved[427];
 };
@@ -201,25 +200,10 @@ vhd_timestamp(void)
 }
 
 static void
-vhd_uuid_enc(void *buf, const uuid_t *uuid)
-{
-	uint8_t *p = buf;
-	int i;
-
-	be32enc(p, uuid->time_low);
-	be16enc(p + 4, uuid->time_mid);
-	be16enc(p + 6, uuid->time_hi_and_version);
-	p[8] = uuid->clock_seq_hi_and_reserved;
-	p[9] = uuid->clock_seq_low;
-	for (i = 0; i < _UUID_NODE_LEN; i++)
-		p[10 + i] = uuid->node[i];
-}
-
-static void
 vhd_make_footer(struct vhd_footer *footer, uint64_t image_size,
     uint32_t disk_type, uint64_t data_offset)
 {
-	uuid_t id;
+	mkimg_uuid_t id;
 
 	memset(footer, 0, sizeof(*footer));
 	be64enc(&footer->cookie, VHD_FOOTER_COOKIE);
@@ -236,7 +220,7 @@ vhd_make_footer(struct vhd_footer *footer, uint64_t image_size,
 	be16enc(&footer->geometry.cylinders, footer->geometry.cylinders);
 	be32enc(&footer->disk_type, disk_type);
 	mkimg_uuid(&id);
-	vhd_uuid_enc(&footer->id, &id);
+	mkimg_uuid_enc(&footer->id, &id);
 	be32enc(&footer->checksum, vhd_checksum(footer, sizeof(*footer)));
 }
 
@@ -261,7 +245,7 @@ struct vhd_dyn_header {
 	uint32_t	max_entries;
 	uint32_t	block_size;
 	uint32_t	checksum;
-	uuid_t		parent_id;
+	mkimg_uuid_t	parent_id;
 	uint32_t	parent_timestamp;
 	char		_reserved1[4];
 	uint16_t	parent_name[256];	/* UTF-16 */