Re: [PATCH] find -samedev NAME: true for files on the same device as NAME

[Eric Blake]

On 11/1/18 10:56 AM, Kamil Dudka wrote:
> There is no easy way to exclude mount points from the output of `find`.
> The options -xdev or -mount prevent `find` from traversing over the
> mount points but do not exclude the mount points themselves.  It could
> be scripted by AWK on Linux as in the following example:
>
> $ find / -xdev -maxdepth 1 $(awk '$2 != "/" { printf("! -path %s ", $2) }' 
> /proc/mounts)
>
> Would it make sense to introduce a new predicate similar to -samefile
> that takes into account device numbers only?
>
> With the proposed predicate implemented in `find`, the above command
> could be encoded in a more user-friendly way:
>
> $ find / -xdev -maxdepth 1 -samedev /
>
> Originally reported at: https://bugzilla.redhat.com/1607772

Duplicate of 
https://lists.gnu.org/archive/html/bug-findutils/2018-09/msg00050.html

POSIX wants -mount and  -xdev to be slightly different, where -xdev 
stays unchanged from current behavior and -mount excludes the mount 
point itself.

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
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