MSYS2 permissions

Question

In Windows 10, with MSYS2 I set my fstab to:

none / cygdrive binary,posix=0,acl,user 0 0

I am unable to set execute permissions with chmod, despite having acl set in the fstab:

# echo > foo
# ls -l foo                              
-rw-r--r-- 1 ant None 1 Jun  1 19:18 foo 
# chmod +x foo
# ls -l foo                              
-rw-r--r-- 1 ant None 1 Jun  1 19:18 foo

In Cygwin, setting the same fstab, for the same file I get:

# ls -l foo                                         
-rwxrwx---+ 1 ant None 1 Jun  1 19:18 foo        

which is the expected behaviour.

Answer 1

Ok, I've wasted quite a bit of time on this, so let me capture my findings:

Changing fstab helps but you must chmod the file via a path that goes through the mount point. In other words:

mkdir /c/test # Outside MSYS2 root (/).
cd /c/test
touch foo
chmod +x foo # works but presumably won't if inside MSYS root.
chmod +x /c/test/foo # works and presumably will if inside MSYS root.
chmod +x c:\test\foo # does not work -- go figure.

Pretty brain-dead, if you ask my humble opinion. And the solution seems pretty simple: change from noacl to acl on all default MSYS2 mounts (the MSYS2 root mount is created automatically and there is no way to change to acl from fstab -- correction: supposedly possible with the override mount option).