<sys/bootblock.h>:
* Added definitions for the Master Boot Record (MBR) used by
a variety of systems (primarily i386), including the format
of the BIOS Parameter Block (BPB).
This information was cribbed from a variety of sources
including <sys/disklabel_mbr.h> which this is a superset of.
As part of this, some data structure elements and #defines
were renamed to be more "namespace friendly" and consistent
with other bootblocks and MBR documentation.
Update all uses of the old names to the new names.
<sys/disklabel_mbr.h>:
* Deprecated in favor of <sys/bootblock.h> (the latter is more
"host tool" friendly).
amd64 & i386:
* Renamed /usr/mdec/bootxx_dosfs to /usr/mdec/bootxx_msdos, to
be consistent with the naming convention of the msdosfs tools.
* Removed /usr/mdec/bootxx_ufs, as it's equivalent to bootxx_ffsv1
and it's confusing to have two functionally equivalent bootblocks,
especially given that "ufs" has multiple meanings (it could be
a synonym for "ffs", or the group of ffs/lfs/ext2fs file systems).
* Rework pbr.S (the first sector of bootxx_*):
+ Ensure that BPB (bytes 11..89) and the partition table
(bytes 446..509) do not contain code.
+ Add support for booting from FAT partitions if BOOT_FROM_FAT
is defined. (Only set for bootxx_msdos).
+ Remove "dummy" partition 3; if people want to installboot(8)
these to the start of the disk they can use fdisk(8) to
create a real MBR partition table...
+ Compile with TERSE_ERROR so it fits because of the above.
Whilst this is less user friendly, I feel it's important
to have a valid partition table and BPB in the MBR/PBR.
* Renamed /usr/mdec/biosboot to /usr/mdec/boot, to be consistent
with other platforms.
* Enable SUPPORT_DOSFS in /usr/mdec/boot (stage2), so that
we can boot off FAT partitions.
* Crank version of /usr/mdec/boot to 3.1, and fix some of the other
entries in the version file.
installboot(8) (i386):
* Read the existing MBR of the filesystem and retain the BIOS
Parameter Block (BPB) in bytes 11..89 and the MBR partition
table in bytes 446..509. (Previously installboot(8) would
trash those two sections of the MBR.)
mbrlabel(8):
* Use sys/lib/libkern/xlat_mbr_fstype.c instead of homegrown code
to map the MBR partition type to the NetBSD disklabel type.
Test built "make release" for i386, and new bootblocks verified to work
(even off FAT!).
If /dev/MAKEDEV doesn't exist then try to run /etc/MAKEDEV instead.
Use the (new) '-n inodes' option to mount_mfs and base the size on the number
of inodes and the size of the MAKEDEV script.
Correct calculation of number of inodes from density for small filesystems.
Add a '-n inodes' option so that the desired number of inodes can be
explicitly given - init needs this for mfs /dev, -i density is too crude.
the version checks, using new -f flag and LMFORCE ioctl
Hopefully the description in the manpage is discouraging enough so that
nobody would dare even _think_ of using forced loads. A warning
message is written to stderr when this is used, just in case.
first alternate superblock is zerod.
Removes any possibility of any programs using a trully out of date
alternate superblock if a filesystem is remade with a larger block size.
-c used to specify the number of cylinders per group
- but newfs has ignored cylinders for a while.
Changing what -c meant is just asking for trouble!
I might add something to let MINCYL be changed.
- allows less than 'one fragment per inode' (useful for mfs /dev)
- limits number of inodes to 2^31 (they are stored in an int32_t)
- errors if the number of cylinder groups is such that the cylinder group
summary won't fit in the first cylinder group.
- ensures that the last cylinder block contains a valid number of fragments
and inodes, and is not larger than any earlier ones.
- cylinder groups are now created with almost the same size as each other.
Change posted to tech-kern, and no one objected.
80 columns (sysinst uses full width these days).
Use {;} instead of , in a couple of places.
Abort if user tries to make a UFS1 filesytem with > 2^31 fragments.
Abort if the cylinder group summary won't fit into the first cylinder group.
Use pread/pwrite and remove a few redundant casts.
the execute bit off for files, but keep search permission for directories.
Change contributed in PR kern/21538 by Pavel Arnost, based on some FreeBSD
patches.
Further manpage changes, and backward-compatibility adjustments done by me.
Also fixes PR kern/16778 by Johan Danielsson, and PR kern/3400 by Rick Byers
