9 Commits

Author SHA1 Message Date
marcel
bfd31b94a3 1. When calculating block addresses, round to the physical block
size.
2.  Replace scheme_first_block() & scheme_next_block() with
    scheme_metadata(). When we round to block sizes, we can't
    reliably fixup any miscalculations.
3.  In scheme_write, calculate ncyls (number of cyclinders), based
    on the total size, sectors/track and number of heads.
4.  Add verbosity when constructing the partitions. This includes
    the starting block address and size in bytes and blocks.
5.  Add verbosity about the sectors/track and number of heads.
2014-03-27 22:45:05 +00:00
marcel
6084642f6d 1. Add -v option to increase vebosity levels
2.  Fix copy-paste bug -- acrually check secsz for being a power of 2
3.  Check secsz and blksz parameters
4.  Print the sector and block size when -v is given
2014-03-27 20:14:40 +00:00
marcel
0a263459f5 First batch of media control:
1.  Change -h to -H and change -t to -T. Use -H to specify the number of
    heads and -T to specify the track size (number of sectors per track).
2.  Add -S and -P. Use -S to specify the logical sector size and -P to
    specify the physical sector size.

Default to 512 for both the logical and physical sector size.
Set nheads and nsecs to 1 by default.
2014-03-25 04:45:55 +00:00
marcel
3cd87458c0 Revamp:
1.  Make secsz globally visible.
2.  Have all code use the global secsz and nparts, rather than passing
    them around.
3.  Introduce lba_t as the type to use when talking about block addresses.
4.  Work on LBAs instead of offsets. There's just too much division with
    the sector size and there's really no value to use by offsets other
    than that is what lseek() wants. For that we now have mkimg_seek().

The bigger picture is that geometry (cylinders, heads, sectors/track) and
also a possible physical sector size are to be globals that can be used
from anyway. We really don't want to pass all that stuff as arguments to
functions and then add __unused for most of them...
2014-03-23 01:10:05 +00:00
marcel
ee34aed1b5 Add support for partition labels and write them for GPT. 2014-03-21 05:30:27 +00:00
marcel
edfa576ac7 Dump my WIP of write support for GPT. This compiles, appears to be
complete, but isn't accepted by g_part_gpt. Time to debug and fix.
2014-03-21 03:27:42 +00:00
marcel
0dddaf6f49 Add a scheme-specific write callback to write the metadata.
While here:
1.  Move FreeBSD-specific headers to a more centralized place, so that
    it's easier to port mkimg.
2.  Remove inclusion of <uuid.h> where we don't need it (copy-pasted).
3.  Check the partition data given on the command line before we do any
    I/O.
4.  Add scheme_round() for rounding the partition size.
5.  Have scheme_write call the scheme-specific write callback and have
    it propagate errors back to the caller.
2014-03-20 20:14:26 +00:00
marcel
5f39eb99a0 Check the partition type alias as defined by the scheme. 2014-03-20 02:27:25 +00:00
marcel
cf8b12efb7 Add mkimg.h. It contains the 'part' structure definition and the linked
list (STAILQ) so that it can be shared and re-used in all source files.
Replace the now unneeded scheme_add_part() with scheme_check_part() for
posterity.

Also (should have been a separate commit), remove the enforcement of
creating a GPT table with at least 128 entries. While this is generally
advised as the default or minimum, it's not actually a hard requirement.
We now recreate a table that's precisely enough (rounded of course).

WHile
2014-03-19 21:44:51 +00:00