993 }

   994 

   995 /*

   996  * smb_session_lookup_user

   997  */

   998 static smb_user_t *

   999 smb_session_lookup_user(smb_session_t *session, char *domain, char *name)

  1000 {

  1001 	smb_user_t	*user;

  1002 	smb_llist_t	*ulist;

  1003 

  1004 	ulist = &session->s_user_list;

  1005 	smb_llist_enter(ulist, RW_READER);

  1006 	user = smb_llist_head(ulist);

  1007 	while (user) {

  1008 		ASSERT(user->u_magic == SMB_USER_MAGIC);

  1009 		if (!utf8_strcasecmp(user->u_name, name) &&

  1010 		    !utf8_strcasecmp(user->u_domain, domain)) {

  1011 			mutex_enter(&user->u_mutex);

  1012 			if (user->u_state == SMB_USER_STATE_LOGGED_IN) {

  1013 				user->u_refcnt++;

  1014 				mutex_exit(&user->u_mutex);

  1015 				break;

  1016 			}

  1017 			mutex_exit(&user->u_mutex);

  1018 		}

  1019 		user = smb_llist_next(ulist, user);

  1020 	}

  1021 	smb_llist_exit(ulist);

  1022 

  1023 	return (user);

  1024 }

  1025 

  1026 /*

  1027  * If a user attempts to log in subsequently from the specified session,

  1028  * duplicates the existing SMB user instance such that all SMB user

  1029  * instances that corresponds to the same user on the given session

  1030  * reference the same user's cred.

  1031  *

  1032  * Returns NULL if the given user hasn't yet logged in from this

  1033  * specified session.  Otherwise, returns a user instance that corresponds

  1034  * to this subsequent login.

  1035  */

  1036 smb_user_t *

  1037 smb_session_dup_user(smb_session_t *session, char *domain, char *account_name)

  1038 {

  1039 	smb_user_t *orig_user = NULL;

  1040 	smb_user_t *user = NULL;

  1041 

  1042 	orig_user = smb_session_lookup_user(session, domain,

  1043 	    account_name);

  1044 

  1045 	if (orig_user) {

  1046 		user = smb_user_dup(orig_user);

  1047 		smb_user_release(orig_user);

  1048 	}

  1049 

  1050 	return (user);