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.
that are used if none at all are specified for a partition. Don't
keep replaying the last field if we run out of fields when processing
a line. Use a 8:1 frag:block ratio for both defaults.
More work here is required. I think disklabel should not attempt
to choose default filesystem parameters, and instead let newfs pick
any defaults if required.
PR: i386/38703
Reported by: Martin Kraemer <Martin.Kraemer@Fujitsu-Siemens.com>
--change "-s newboot" to "-s newboot2" in an example
--Fixed spelling
--Fixed some confusion between slice/parition/primary partition and other
things.
PR: 35947 and 35951
Noticed by: Gary W. Swearingen <swear@blarg.net>
Reviewed by: keramida
Thanks to: grog
MFC after: 2 days
Pick up the c-partitions magicness from sys/disklabel.h instead
of defining our own magicness for it, remove trivial comment.
Sponsored by: DARPA and NAI Labs.
disklabel(8)'s "Reading the disk label" section starts out "To examine
or save the label on a disk drive,...". This is confusing. The given
command (disklabel [-r] disk) doesn't save anything (except to standard
out, but that should go without saying). It reads as if the command
might save something on the disk drive.
PR: 32452
Submitted by: Gary W. Swearingen <swear@blarg.net>
being:
# size offset fstype [fsize bsize bps/cpg]
a: 400M 0 4.2BSD 4096 16384 75 # (Cyl. 0 - 812*)
b: 1G * swap
c: * * unused
e: 204800 * 4.2BSD
f: 5g * 4.2BSD
g: * * 4.2BSD
These patches are the original work of Randell Jesup, and
I believe Matt Dillon, with additional work by Warner Losh.
Please let me know if I've left someone out.
Incorporated into this is the fix for PR bin/22727.
This patchset still has style issues and a possible problem on
large disks. However, it was a agreed to get these committed before
performing major surgery on them.
PR: bin/22727
Submitted by: Randell Jesup <rjesup@wgate.com>
Describe the command formats in English.
Add references to other programs (boot0cfg, fdisk).
Remove some old cruft, including FUD about single-level bootstraps.
Add example of output format.
Not-objected-to-by: msmith
rnordier
- nonstandard sector sizes didn't work because the sector size in the
ASCII label was not read before a (default, wrong) sector size was used.
- the exit status was 0 after exiting early due to an invalid ASCII label.
Abort `disklabel -B...' if the secondary bootstrap doesn't fit.
d_packname in in-core labels, so they are garbage if d_packname is
initialized in the dummy label for the whole disk. dsopen() will soon
initialize d_packname to "fictitious" if it is not already initialized.
Fixed nearby error handling. Rev.1.7 apparently confused Perror()
with perror().
