This file is indexed.

/etc/sane.d/canon630u.conf is in libsane-common 1.0.27-1~experimental3ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# Options for the canonusb backend

# Autodetect the Canon CanoScan FB630u
usb 0x04a9 0x2204

# device list for non-linux-systems (enable if autodetect fails):
#/dev/scanner
#/dev/usb/scanner0