Solaris offers the following predefined permissions sets:
attr xattr acl own
---- ----- --- ---
full_set = rwx p dD aA RW cC o s
modify_set = rwx p dD aA RW c_ _ s
read_set = r__ _ __ a_ R_ c_ _ s
write_set = _w_ p __ _A _W __ _ s Thus:
modify_set = read_set | write_set | (x dD)
or yet:
modify_set = full_set & ~(C o)
Note the following resemblance between the trivial-ACL (UNIX standard rwx flags) and the NFSv4 predefined permissions sets (owner implies C o):
UNIX NFSv4
---- -------------------------
r ---> read_set = r ...
w ---> write_set = w p ...---- -------------------------
r ---> read_set = r ...
x ---> x
r-x ---> read_set | x
rwx ---> modify_set
Again, these are the predefined permissions sets according to Solaris.
It may be useful to contrast to Windows (SMB/CIFS) permission sets.