What happened:

Given a desire to scan a host
When it reaches a symlink that point to a character special device that would block on read
It hangs

What you expected to happen:

Given a desire to scan a host
When it reaches a symlink that point to a character special device (OR a socket) [that could block on read]
It should skip it as unreadable and continue to completion.

How to reproduce it (as minimally and precisely as possible):

On a machine with a sound driver (I couldn't think of other characters that would be likely to block on read for a CI/CD environment).

syft packages dir:/run/

Hangs when Indexing file:/run/udev/static_node-tags/uaccess/snd\x2fseq

/run/udev/static_node-tags/uaccess/snd\x2fseq is a symlink to /dev/snd/seq, which is a character device

strace shows syft doing the following

It would appear that syft is correctly detecting the symlink, but then not doing the check (that it would normally do if I run syft against file:/dev/snd/seq) in detecting it as character special device.

Anything else we need to know?:

Environment:

• Output of syft version: Version 0.32.0

Downloaded today from GitHub release using install.sh script from this repository.

• OS (e.g: cat /etc/os-release or similar):

Red Hat Enterprise Linux release 8.4 (Ootpa) --- running as a graphical workstation with sound capability.