CVS commit: src/sbin/gpt

["Michael van Elst" <mlelstv%netbsd.org@localhost>]

Module Name:    src
Committed By:   mlelstv
Date:           Sun Oct 20 08:21:30 UTC 2024

Modified Files:
        src/sbin/gpt: gpt.c gpt_private.h gpt_uuid.c uuid.c

Log Message:
When generating timestamp based GUIDs for reproducable builds
- increment timestamp by 100ns for each partition.
- use the standard time-based UUID format (type 1) and don't
  pretend it's a random number (type 4).
- make the -T option actually work for the uuid command.

Random GUIDs:
  start   size  index  contents
     34   1000      1  GPT part - d93ba067-a788-4ce0-99b8-0ead51f00215
   1034   2000      2  GPT part - bebba77a-7fdc-4ca0-a1bf-7450aa871d41

d93ba067-a788-4ce0-99b8-0ead51f00215:
Version 4 Random
Variant 2 RFC 4122
Data D9 3B A0 67 A7 88 4C E0 99 B8 0E AD 51 F0 02 15

bebba77a-7fdc-4ca0-a1bf-7450aa871d41:
Version 4 Random
Variant 2 RFC 4122
Data BE BB A7 7A 7F DC 4C A0 A1 BF 74 50 AA 87 1D 41

Timestamp based GUIDs:
  start   size  index  contents
     34   1000      1  GPT part - 0a524600-8eba-11ef-8000-000000000000
   1034   2000      2  GPT part - 0a524601-8eba-11ef-8000-000000000000

0a524600-8eba-11ef-8000-000000000000:
Version 1 Time and MAC based
Variant 2 RFC 4122
Node 00:00:00:00:00:00
Clock 0
Time 2024-10-20T08:05:16.000000.0Z

0a524601-8eba-11ef-8000-000000000000:
Version 1 Time and MAC based
Variant 2 RFC 4122
Node 00:00:00:00:00:00
Clock 0
Time 2024-10-20T08:05:16.000000.1Z

Node (host MAC address) and clock (sequence number incremented whenever
the time went backwards) are left undefined (all zero) for our purpose.


To generate a diff of this commit:
cvs rdiff -u -r1.89 -r1.90 src/sbin/gpt/gpt.c
cvs rdiff -u -r1.3 -r1.4 src/sbin/gpt/gpt_private.h
cvs rdiff -u -r1.22 -r1.23 src/sbin/gpt/gpt_uuid.c
cvs rdiff -u -r1.2 -r1.3 src/sbin/gpt/uuid.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.