Commit b1d93356 authored Nov 15, 2013 by Steve French

setfacl removes part of ACL when setting POSIX ACLs to Samba



setfacl over cifs mounts can remove the default ACL when setting the
(non-default part of) the ACL and vice versa (we were leaving at 0
rather than setting to -1 the count field for the unaffected
half of the ACL.  For example notice the setfacl removed
the default ACL in this sequence:

steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir ; setfacl
-m default:user:test:rwx,user:test:rwx /mnt/test-dir
getfacl: Removing leading '/' from absolute path names
user::rwx
group::r-x
other::r-x
default:user::rwx
default:user:test:rwx
default:group::r-x
default:mask::rwx
default:other::r-x

steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir
getfacl: Removing leading '/' from absolute path names
user::rwx
user:test:rwx
group::r-x
mask::rwx
other::r-x

CC: Stable <stable@kernel.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Jeremy Allison <jra@samba.org>

parent de9f68df

fs/cifs/cifssmb.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -3369,11 +3369,13 @@ static __u16 ACL_to_cifs_posix(char parm_data, const char pACL,
		return 0;
		}
		cifs_acl->version = cpu_to_le16(1);
		if (acl_type == ACL_TYPE_ACCESS)
		if (acl_type == ACL_TYPE_ACCESS) {
		cifs_acl->access_entry_count = cpu_to_le16(count);
		else if (acl_type == ACL_TYPE_DEFAULT)
		cifs_acl->default_entry_count = __constant_cpu_to_le16(0xFFFF);
		} else if (acl_type == ACL_TYPE_DEFAULT) {
		cifs_acl->default_entry_count = cpu_to_le16(count);
		else {
		cifs_acl->access_entry_count = __constant_cpu_to_le16(0xFFFF);
		} else {
		cifs_dbg(FYI, "unknown ACL type %d\n", acl_type);
		return 0;
		}