140 static void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
142 	UNIXCB(skb).secid = scm->secid;  in unix_get_secdata()
145 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
147 	scm->secid = UNIXCB(skb).secid;  in unix_set_secdata()
150 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
152 	return (scm->secid == UNIXCB(skb).secid);  in unix_secdata_eq()
155 static inline void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
158 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
161 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
1616 static void unix_peek_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_peek_fds()  argument
1618 	scm->fp = scm_fp_dup(UNIXCB(skb).fp);  in unix_peek_fds()
1663 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)  in unix_scm_to_skb()  argument
1667 	UNIXCB(skb).pid  = get_pid(scm->pid);  in unix_scm_to_skb()
1668 	UNIXCB(skb).uid = scm->creds.uid;  in unix_scm_to_skb()
1669 	UNIXCB(skb).gid = scm->creds.gid;  in unix_scm_to_skb()
1671 	unix_get_secdata(scm, skb);  in unix_scm_to_skb()
1672 	if (scm->fp && send_fds)  in unix_scm_to_skb()
1673 		err = unix_attach_fds(scm, skb);  in unix_scm_to_skb()
1703 static int maybe_init_creds(struct scm_cookie *scm,  in maybe_init_creds()  argument
1710 	err = scm_send(socket, &msg, scm, false);  in maybe_init_creds()
1715 		scm->pid = get_pid(task_tgid(current));  in maybe_init_creds()
1716 		current_uid_gid(&scm->creds.uid, &scm->creds.gid);  in maybe_init_creds()
1722 			    struct scm_cookie *scm)  in unix_skb_scm_eq()  argument
1726 	return u->pid == scm->pid &&  in unix_skb_scm_eq()
1727 	       uid_eq(u->uid, scm->creds.uid) &&  in unix_skb_scm_eq()
1728 	       gid_eq(u->gid, scm->creds.gid) &&  in unix_skb_scm_eq()
1729 	       unix_secdata_eq(scm, skb);  in unix_skb_scm_eq()
1767 	struct scm_cookie scm;  in unix_dgram_sendmsg()  local
1772 	err = scm_send(sock, msg, &scm, false);  in unix_dgram_sendmsg()
1816 	err = unix_scm_to_skb(&scm, skb, true);  in unix_dgram_sendmsg()
1949 	scm_destroy(&scm);  in unix_dgram_sendmsg()
1961 	scm_destroy(&scm);  in unix_dgram_sendmsg()
1972 		     struct scm_cookie *scm, bool fds_sent)  in queue_oob()  argument
1983 	err = unix_scm_to_skb(scm, skb, !fds_sent);  in queue_oob()
2031 	struct scm_cookie scm;  in unix_stream_sendmsg()  local
2036 	err = scm_send(sock, msg, &scm, false);  in unix_stream_sendmsg()
2083 		err = unix_scm_to_skb(&scm, skb, !fds_sent);  in unix_stream_sendmsg()
2115 		err = queue_oob(sock, msg, other, &scm, fds_sent);  in unix_stream_sendmsg()
2122 	scm_destroy(&scm);  in unix_stream_sendmsg()
2134 	scm_destroy(&scm);  in unix_stream_sendmsg()
2144 	struct scm_cookie scm;  in unix_stream_sendpage()  local
2191 		err = maybe_init_creds(&scm, socket, other);  in unix_stream_sendpage()
2201 	} else if (!skb || !unix_skb_scm_eq(skb, &scm)) {  in unix_stream_sendpage()
2228 		unix_scm_to_skb(&scm, skb, false);  in unix_stream_sendpage()
2237 	scm_destroy(&scm);  in unix_stream_sendpage()
2249 		scm_destroy(&scm);  in unix_stream_sendpage()
2296 	struct scm_cookie scm;  in __unix_dgram_recvmsg()  local
2360 	memset(&scm, 0, sizeof(scm));  in __unix_dgram_recvmsg()
2362 	scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in __unix_dgram_recvmsg()
2363 	unix_set_secdata(&scm, skb);  in __unix_dgram_recvmsg()
2367 			unix_detach_fds(&scm, skb);  in __unix_dgram_recvmsg()
2387 			unix_peek_fds(&scm, skb);  in __unix_dgram_recvmsg()
2391 	scm_recv(sock, msg, &scm, flags);  in __unix_dgram_recvmsg()
2591 	struct scm_cookie scm;  in unix_stream_read_generic()  local
2622 	memset(&scm, 0, sizeof(scm));  in unix_stream_read_generic()
2684 				scm_destroy(&scm);  in unix_stream_read_generic()
2708 			if (!unix_skb_scm_eq(skb, &scm))  in unix_stream_read_generic()
2712 			scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in unix_stream_read_generic()
2713 			unix_set_secdata(&scm, skb);  in unix_stream_read_generic()
2759 				unix_detach_fds(&scm, skb);  in unix_stream_read_generic()
2768 			if (scm.fp)  in unix_stream_read_generic()
2774 				unix_peek_fds(&scm, skb);  in unix_stream_read_generic()
2795 		scm_recv(sock, state->msg, &scm, flags);  in unix_stream_read_generic()
2797 		scm_destroy(&scm);  in unix_stream_read_generic()