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Execute syft scan in chroot environment #13

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merged 1 commit into from
Jan 5, 2023
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@jedevc jedevc commented Jan 3, 2023

When scanning a directory, the syft scanner resolves symlinks inside the target directory in the context of the host filesystem. However, for our purposes, the target filesystem is entirely self-contained. In lieu of syft changes, we can temporarily hack around this limitation by executing the scanner in a chroot-ed environment.

See anchore/syft#1359 for more context.

With this change, we see fewer warning messages of the form (though we may still see some due to broken symlinks):

#20 0.395 [0000]  WARN unable to access path="/bin/busybox": lstat /bin/busybox: no such file or directory

@jedevc jedevc requested review from tonistiigi and crazy-max January 3, 2023 15:22
When scanning a directory, the syft scanner resolves symlinks inside the
target directory in the context of the host filesystem. However, for our
purposes, the target filesystem is entirely self-contained. In lieu of
syft changes, we can temporarily hack around this limitation by
executing the scanner in a chroot-ed environment.

Signed-off-by: Justin Chadwell <me@jedevc.com>
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This should be fine as long as it is imported only from cmd and runs single-threaded. Otherwise, bad things can happen.

@tonistiigi tonistiigi merged commit 370ddaf into master Jan 5, 2023
@jedevc jedevc deleted the chroot-scanner branch January 6, 2023 10:50
@jedevc jedevc mentioned this pull request Jan 31, 2023
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2 participants