commit 75053cc0be7c4d78ef0c6b5e9954ee30b85705bc
Author: Brian De Wolf <bldewolf@csupomona.edu>
Date:   Tue Sep 15 14:33:55 2009 -0700

    allow parsing ACEs with empty masks
    
    After upgrading from 0.3.2 to 0.3.3 to fix some segfaulting issues we
    had, 0.3.3 now rejects ACEs that have empty mask fields.  This is
    because the function parse_alloc_fields checks whether the three strings
    are zero length.  Having a zero length "type" or "who" definitely
    doesn't make sense, but having an empty mask is entirely possible.  It's
    allowed in the old versions and the ZFS back-end in our setup allows
    them too.  Even nfs4_getfacl prints them out, producing the frustrating
    situation where nfs4_getfacl can produce ACLs that you can't apply with
    nfs4_setfacl.
    
    This patch modifies the function to not check if the mask is an empty
    string.
    
    Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

diff --git a/libnfs4acl/nfs4_ace_from_string.c b/libnfs4acl/nfs4_ace_from_string.c
index 036d9b8..9d877fb 100644
--- a/libnfs4acl/nfs4_ace_from_string.c
+++ b/libnfs4acl/nfs4_ace_from_string.c
@@ -120,7 +120,7 @@ parse_alloc_fields(char *buf, char *fields[NUMFIELDS])
 		fields[i][len] = 0;
 	}
 
-	if (!fields[TYPE_INDEX][0] || !fields[WHO_INDEX][0] || !fields[MASK_INDEX][0])
+	if (!fields[TYPE_INDEX][0] || !fields[WHO_INDEX][0])
 		goto out_free;
 
 	return 0;