system/coreutils: fix test failure with bind mounts

df-symlink tests whether df output is consistent in regards to where
devices are mounted. Specifically, it tries to ensure that if there is a
1:1 mapping of the device ("source") corresponding to the current
directory "." ("target"), then `df --output=source,target .` should be
the same as `df --output=source,target $(df --out=source . | tail -n1)`.
However, this is not necessarily the case in the presence of bind
mounts. For example:

$ df --out=source .
Filesystem
/dev/sda4
$ df --out=source,target /dev/sda4
Filesystem     Mounted on
/dev/sda4      /
$ df --out=source,target .
Filesystem     Mounted on
/dev/sda4      /git

This can be fixed by adding the --all flag to ensure that duplicate
devices are printed, so that the 1:1-checking if statement actually
checks it correctly.

0 files changed, 0 insertions, 0 deletions