141 static void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
143 	UNIXCB(skb).secid = scm->secid;  in unix_get_secdata()
146 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
148 	scm->secid = UNIXCB(skb).secid;  in unix_set_secdata()
151 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
153 	return (scm->secid == UNIXCB(skb).secid);  in unix_secdata_eq()
156 static inline void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
159 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
162 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
1491 static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_detach_fds()  argument
1495 	scm->fp = UNIXCB(skb).fp;  in unix_detach_fds()
1498 	for (i = scm->fp->count-1; i >= 0; i--)  in unix_detach_fds()
1499 		unix_notinflight(scm->fp->user, scm->fp->fp[i]);  in unix_detach_fds()
1504 	struct scm_cookie scm;  in unix_destruct_scm()  local
1505 	memset(&scm, 0, sizeof(scm));  in unix_destruct_scm()
1506 	scm.pid  = UNIXCB(skb).pid;  in unix_destruct_scm()
1508 		unix_detach_fds(&scm, skb);  in unix_destruct_scm()
1512 	scm_destroy(&scm);  in unix_destruct_scm()
1533 static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_attach_fds()  argument
1542 	for (i = scm->fp->count - 1; i >= 0; i--) {  in unix_attach_fds()
1543 		struct sock *sk = unix_get_socket(scm->fp->fp[i]);  in unix_attach_fds()
1559 	UNIXCB(skb).fp = scm_fp_dup(scm->fp);  in unix_attach_fds()
1563 	for (i = scm->fp->count - 1; i >= 0; i--)  in unix_attach_fds()
1564 		unix_inflight(scm->fp->user, scm->fp->fp[i]);  in unix_attach_fds()
1568 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)  in unix_scm_to_skb()  argument
1572 	UNIXCB(skb).pid  = get_pid(scm->pid);  in unix_scm_to_skb()
1573 	UNIXCB(skb).uid = scm->creds.uid;  in unix_scm_to_skb()
1574 	UNIXCB(skb).gid = scm->creds.gid;  in unix_scm_to_skb()
1576 	unix_get_secdata(scm, skb);  in unix_scm_to_skb()
1577 	if (scm->fp && send_fds)  in unix_scm_to_skb()
1578 		err = unix_attach_fds(scm, skb);  in unix_scm_to_skb()
1608 static int maybe_init_creds(struct scm_cookie *scm,  in maybe_init_creds()  argument
1615 	err = scm_send(socket, &msg, scm, false);  in maybe_init_creds()
1620 		scm->pid = get_pid(task_tgid(current));  in maybe_init_creds()
1621 		current_uid_gid(&scm->creds.uid, &scm->creds.gid);  in maybe_init_creds()
1627 			    struct scm_cookie *scm)  in unix_skb_scm_eq()  argument
1631 	return u->pid == scm->pid &&  in unix_skb_scm_eq()
1632 	       uid_eq(u->uid, scm->creds.uid) &&  in unix_skb_scm_eq()
1633 	       gid_eq(u->gid, scm->creds.gid) &&  in unix_skb_scm_eq()
1634 	       unix_secdata_eq(scm, skb);  in unix_skb_scm_eq()
1654 	struct scm_cookie scm;  in unix_dgram_sendmsg()  local
1660 	err = scm_send(sock, msg, &scm, false);  in unix_dgram_sendmsg()
1704 	err = unix_scm_to_skb(&scm, skb, true);  in unix_dgram_sendmsg()
1830 	scm_destroy(&scm);  in unix_dgram_sendmsg()
1842 	scm_destroy(&scm);  in unix_dgram_sendmsg()
1859 	struct scm_cookie scm;  in unix_stream_sendmsg()  local
1865 	err = scm_send(sock, msg, &scm, false);  in unix_stream_sendmsg()
1906 		err = unix_scm_to_skb(&scm, skb, !fds_sent);  in unix_stream_sendmsg()
1938 	scm_destroy(&scm);  in unix_stream_sendmsg()
1950 	scm_destroy(&scm);  in unix_stream_sendmsg()
1960 	struct scm_cookie scm;  in unix_stream_sendpage()  local
2006 		err = maybe_init_creds(&scm, socket, other);  in unix_stream_sendpage()
2015 	} else if (!skb || !unix_skb_scm_eq(skb, &scm)) {  in unix_stream_sendpage()
2042 		err = unix_scm_to_skb(&scm, skb, false);  in unix_stream_sendpage()
2054 	scm_destroy(&scm);  in unix_stream_sendpage()
2066 		scm_destroy(&scm);  in unix_stream_sendpage()
2113 	struct scm_cookie scm;  in unix_dgram_recvmsg()  local
2165 	memset(&scm, 0, sizeof(scm));  in unix_dgram_recvmsg()
2167 	scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in unix_dgram_recvmsg()
2168 	unix_set_secdata(&scm, skb);  in unix_dgram_recvmsg()
2172 			unix_detach_fds(&scm, skb);  in unix_dgram_recvmsg()
2192 			scm.fp = scm_fp_dup(UNIXCB(skb).fp);  in unix_dgram_recvmsg()
2196 	scm_recv(sock, msg, &scm, flags);  in unix_dgram_recvmsg()
2263 	struct scm_cookie scm;  in unix_stream_read_generic()  local
2291 	memset(&scm, 0, sizeof(scm));  in unix_stream_read_generic()
2344 				scm_destroy(&scm);  in unix_stream_read_generic()
2368 			if (!unix_skb_scm_eq(skb, &scm))  in unix_stream_read_generic()
2372 			scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in unix_stream_read_generic()
2373 			unix_set_secdata(&scm, skb);  in unix_stream_read_generic()
2418 				unix_detach_fds(&scm, skb);  in unix_stream_read_generic()
2426 			if (scm.fp)  in unix_stream_read_generic()
2432 				scm.fp = scm_fp_dup(UNIXCB(skb).fp);  in unix_stream_read_generic()
2453 		scm_recv(sock, state->msg, &scm, flags);  in unix_stream_read_generic()
2455 		scm_destroy(&scm);  in unix_stream_read_generic()