Test "mntdir with space" fails on Alpine Linux

[dgerber]

This tests fails when running as uid not 0 and with --no-allow-other.

--- mntdir with space ---
[    ]
fusermount3: entry for .../lib/alpine/aports/testing/bindfs/src/bindfs-1.15.1/tests/tmp_test_bindfs/a b not found in /etc/mtab
ERROR: failed to umount

Not sure if the issue is in libfuse.

[mpartel]

I added --no-allow-other to the test case on Debian 10 (FUSE 3.4.1) and Debian 11 (FUSE 3.10.3) and it passed.

I agree that the problem is likely in libfuse or, looking at may_unmount there, possibly in musl's implementation of getmntent.

[mpartel]

Vagrant setup where it repros: https://github.com/mpartel/bindfs/commit/6d762ab912e9c15ca5e34f1517a7dd5897bb900d Can add it to test suite when fixed.