do not merge ACEs with different SMB_ACE4_INHERIT_ONLY_ACE flag, this leads to wrong...

do not merge ACEs with different SMB_ACE4_INHERIT_ONLY_ACE flag, this leads to wrong inheritance flags in the ACL e.g. (on GPFS) user:10000036:rwxc:allow (X)READ/LIST (X)WRITE/CREATE (X)MKDIR (X)SYNCHRONIZE (X)READ_ACL (X)READ_ATTR (X)READ_NAMED (X)DELETE (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (X)WRITE_ATTR (X)WRITE_NAMED

user:10000036:rwxc:allow:FileInherit:DirInherit:InheritOnly
 (X)READ/LIST (X)WRITE/CREATE (X)MKDIR (X)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (X)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (X)WRITE_ATTR (X)WRITE_NAMED

group:10000005:rwxc:allow
 (X)READ/LIST (X)WRITE/CREATE (X)MKDIR (X)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (X)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (X)WRITE_ATTR (X)WRITE_NAMED

group:10000005:rwxc:allow:FileInherit:DirInherit:InheritOnly
 (X)READ/LIST (X)WRITE/CREATE (X)MKDIR (X)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (X)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (X)WRITE_ATTR (X)WRITE_NAMED

would be merged to

user:10000036:rwxc:allow:FileInherit:DirInherit:InheritOnly
 (X)READ/LIST (X)WRITE/CREATE (X)MKDIR (X)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (X)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (X)WRITE_ATTR (X)WRITE_NAMED

group:10000005:rwxc:allow:FileInherit:DirInherit:InheritOnly
 (X)READ/LIST (X)WRITE/CREATE (X)MKDIR (X)SYNCHRONIZE (X)READ_ACL  (X)READ_ATTR  (X)READ_NAMED
 (X)DELETE    (X)DELETE_CHILD (X)CHOWN (X)EXEC/SEARCH (X)WRITE_ACL (X)WRITE_ATTR (X)WRITE_NAMED

so the explicit right for the user on the parent directory will be gone (the InheritOnly flag only accounts to subdirectories)
thus leaving the user without access to the directory itself

Signed-off-by: Christian Ambach <christian.ambach@de.ibm.com>
(cherry picked from commit 5e7da42f6ea768a1e2eeeb15b8b2c41cdfcac94f)

Signed-off-by: Michael Adam <obnox@samba.org>