0xffffffff sectors. Document this limit and avoid installing bogus
labels on disks with more sectors.
Allowing the installation of labels addressing as much of the disk as
possiable may be a useful addition in some situations, but this was easy
to implement and should reduce confusion.
PR: bin/71408
length, and flags fields at the end of the SRM boot sector so that SRM can
find the bootstrap code. This fixes bsdlabel -m alpha to generate bootable
disklabels.
Reviewed by: phk
and the logic for setting them according to the partition size.
Instead, unspecified filesystem values are left at 0 so that newfs
will use its own defaults. It just caused confusion to have the
defaults duplicated in two different places.
Reviewed by: phk
hinge on the "verb" parameter which the class gets to interpret as
it sees fit.
Move the entire request into the kernel and move changed parameters
back when done.
Just because we for the last ten years have fought for every byte
in the boot code on i386, doesn't mean that other architectures could
not actually have space to spare there.
Remore debugging message.
Hide all the historical fields of the label, unless people ask for them with -A,
set them to intelligently chosen defaults otherwise.
Distill the manual page to remove inaccuracies, misundertandings and obsolete
information. It can probably still be done better but now at least it is
not misinforming people.
recorded in global variables, rather than checks on the architecture.
Drop horribly code to handle MBR/PC98's embedded in the BSD label area.
If you need to have an MBR or PC98 on your disk, you should not overlap
it with a BSDLABEL, if you don't need it, this code is nothing but trouble.
for the alpha checksum, and set them depending on the specified architecture
Don't look for disklabels every 16 bytes, look the only place they should
be for the current architecture.
Always read the label from the raw disk and decode it into struct
disklabel rather than trust a cast from random addresses.
When writing to the raw disk, encode the label properly.
This is aimed at creating floppies during cross-releases.
For different endianness machines, a tool like bswapfs(8)
is necessary to make the generated floppies readable on
the target machine. While here, fixed unaligned access
on Alphas.
Tested on: i386, alpha
creates a single file named just "boot".
Apart from the fact that the option "-s" is now gone and that "-b" should
be pointed at /boot/boot instead of /boot/boot1, this patch should be
a no-op.
for the disklabel: This facility is OBE.
First of all, we cannot sensibly implement this in a properly stacked
environment.
Second, if we did, it would confuse the heck out of users who
wouldn't be able to "start from scratch" by dd(8)'ing /dev/zero
onto /dev/da0.
Third, the offered protection is not comprehensive: no other software
would respect it.
Fourth and finally, the disklabel is already protected against
tampering if it controls open partitions.
Uselessness of these options discussed with: peter
other partitiosns. This is necessary when migrating conventional
partitions to Vinum and was broken by recent more stringent overlap
checks. This is arguably the wrong way to do it. A better method
would be to have the loader understand a subset of Vinum partitioning
and allow an install directly to Vinum, but until then, this is the
best we have.
Reviewed by: jhb
Approved by: re (rwatson)
take unsigned values.
his allows one to label disk with the number of blocks > 31 bits
(though less then 32 bits)
e.g.
# size offset fstype [fsize bsize bps/cpg]
c: 3125755904 0 unused 0 0 # (Cyl. 0 - 194569*)
d: 3125755840 64 unused 0 0 # (Cyl. 0*- 194569*)
which is needd to test UFS2
Peter had repocopied sys/disklabel.h to sys/diskpc98.h and sys/diskmbr.h.
These two new copies are still intact copies of disklabel.h and
therefore protected by #ifndef _SYS_DISKLABEL_H_ so #including them
in programs which already include <sys.disklabel.h> is currently a
no-op.
This commit adds a number of such #includes.
Once I have verified that I have fixed all the places which need fixing,
I will commit the updated versions of the three #include files.
Sponsored by: DARPA & NAI Labs.
