Allowing \xxx in fstab

[Stefan Farfeleder]

Hi,

I want to add support to specify device names containing spaces in
fstab. Filesystem labels often contain spaces and we create
corresponding devices names, e.g., /dev/msdosfs/FOO BAR.
Currently there's no way to mount such devices via fstab.

The standard way of doing that in Linux seems to be to encode the space
with '\040' in fstab, so I followed that approach. There's a patch in PR
117687 (http://www.freebsd.org/cgi/query-pr.cgi?pr=117687) that uses
strunvis() but I feel not very confident with the function as it
translates more things than just \xxx.

Comments?

Stefan
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