pyrox.dev
lol
make-ext4-fs: Fix modification timestamps in image
Use '-f' to make timestamp calls to always return the same time. Also
Nix uses the timestamp of '1' instead of epoch directly.
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-2
nixos/lib/make-ext4-fs.nix
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-2
nixos/lib/make-ext4-fs.nix
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echo "Creating an EXT4 image of $bytes bytes (numInodes=$numInodes, numDataBlocks=$numDataBlocks)"
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truncate -s $bytes $out
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faketime "1970-01-01 00:00:00" mkfs.ext4 -L ${volumeLabel} -U 44444444-4444-4444-8888-888888888888 $out
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# Populate the image contents by piping a bunch of commands to the `debugfs` tool from e2fsprogs.
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# For example, to copy /nix/store/abcd...efg-coreutils-8.23/bin/sleep:
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echo sif $file gid 30000 # chgrp to nixbld
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done
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) | faketime "1970-01-01 00:00:00" debugfs -w $out -f /dev/stdin > errorlog 2>&1
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# The debugfs tool doesn't terminate on error nor exit with a non-zero status. Check manually.
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if egrep -q 'Could not allocate|File not found' errorlog; then
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echo "Creating an EXT4 image of $bytes bytes (numInodes=$numInodes, numDataBlocks=$numDataBlocks)"
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35
truncate -s $bytes $out
36
+
faketime -f "1970-01-01 00:00:01" mkfs.ext4 -L ${volumeLabel} -U 44444444-4444-4444-8888-888888888888 $out
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# Populate the image contents by piping a bunch of commands to the `debugfs` tool from e2fsprogs.
39
# For example, to copy /nix/store/abcd...efg-coreutils-8.23/bin/sleep:
···
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echo sif $file gid 30000 # chgrp to nixbld
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done
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+
) | faketime -f "1970-01-01 00:00:01" debugfs -w $out -f /dev/stdin > errorlog 2>&1
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# The debugfs tool doesn't terminate on error nor exit with a non-zero status. Check manually.
82
if egrep -q 'Could not allocate|File not found' errorlog; then