Re: [rdiff-backup-users] rdiff-backup - ACL troubles!

[Andrew Ross]

Ben Escoto wrote:
> > > > > > Murali Vadivelu <address@hidden>
> > > > > > wrote the following on Mon, 31 Oct 2005 02:46:48 +0000
> >
> > Does it use the Mac OS X specific command /usr/sbin/fsaclctl command?  
> > If that is the case it would fail as the OS probably stores the ACL  
> > enabled status at the root of the volume.

> Oh, no it "manually" tries to read ACL information from that directory
> with pylibacl.  Here is the relevant code:
>
> try: posix1e.ACL(file=rp.path)
> except IOError:
>         log.Log("ACLs not supported by filesystem at %s" % (rp.path,), 4)
>         self.acls = 0
> else: self.acls = 1

I have ACLs enabled on my Tiger system and have noticed that pylibacl 
throws an IOError when you attempt to read the ACL for a file/dir that 
does not have an ACL set yet eg.

aross-laptop:~ aross$ mkdir -p test/acltest

aross-laptop:~ aross$ ls -le test
total 0
drwxr-xr-x   2 aross  aross  68 Oct 31 14:50 acltest

aross-laptop:~ aross$ python -c 'import posix1e; acl = 
posix1e.ACL(file="acltest")'
Traceback (most recent call last):
  File "<string>", line 1, in ?
IOError: [Errno 2] No such file or directory

aross-laptop:~ aross$ chmod +a "admin allow delete" acltest

aross-laptop:~ aross$ ls -le test
drwxr-xr-x + 2 root  aross     68 Oct 31 14:52 acltest
 0: group:admin allow delete

aross-laptop:~ aross$ python -c 'import posix1e; acl = 
posix1e.ACL(file="acltest")'

[ no expection thrown]

I don't know if this is a bug in pylibacl or a case of Apple not 
sticking to the standard.

Cheers

Andrew Ross
IT Officer
Whitley College

Ph: (03) 9340 8008