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cmd/zgenhostid: replace with simple c implementation

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It was discovered that dracut scripts and zgenhostid
always generate little-endian /etc/hostid.

This commit provides simple endianess-aware binary
and updates the scripts to use it.

New features include:
 -f flag to force overwrite.
 -o flag to write to different file (for dracut)
 accepting both 0x01234567 and 01234567 values as input

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Signed-off-by: Georgy Yakovlev <gyakovlev@gentoo.org>
Closes #10887
Closes #10925
This commit is contained in:
Georgy Yakovlev
2020-09-16 12:25:12 -07:00
committed by Brian Behlendorf
parent 1ce90aa441
commit 0968d689a2
7 changed files with 213 additions and 93 deletions
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