Summary: System is dual boot Fedora 22 (gnome-shell 3.16.2) and OS X. There is an HFS+ (not journaled) volume that is shared between them. Nautilus automounts this volume, but somehow is telling udisks2 the wrong thing because the permissions are set such that I can't open any files with any applications, and it can't be fixed via the GUI. So I have to restort to the CLI to fix this manually.

I don't actually know if the issue is with Nautilus or udisks2 or something else; and I don't know if the volume format being hFS+ is relevant either.

# journalctl
Jun 15 21:18:15 f22m.localdomain udisksd[1272]: Mounted /dev/sda5 at
/run/media/chris/temphfs on behalf of uid 1000

# mount
/dev/sda5 on /run/media/chris/temphfs type hfsplus
(rw,nosuid,nodev,relatime,umask=22,uid=0,gid=0,nls=utf8,uhelper=udisks2)

[chris@f22m temphfs]$ ls -lhd /run/media/chris/temphfs/
drwxr-xr-x. 1 root root 9 Jun 15 20:12 /run/media/chris/temphfs/
[chris@f22m temphfs]$ getfacl /run/media/chris/temphfs/
getfacl: Removing leading '/' from absolute path names
# file: run/media/chris/temphfs/
# owner: root
# group: root
user::rwx
group::r-x
other::r-x