108 #include <net/scm.h>
256 static void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
258 	UNIXCB(skb).secid = scm->secid;  in unix_get_secdata()
261 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
263 	scm->secid = UNIXCB(skb).secid;  in unix_set_secdata()
266 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
268 	return (scm->secid == UNIXCB(skb).secid);  in unix_secdata_eq()
271 static inline void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
274 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
277 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
1962 static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_attach_fds()  argument
1967 	UNIXCB(skb).fp = scm->fp;  in unix_attach_fds()
1968 	scm->fp = NULL;  in unix_attach_fds()
1976 static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_detach_fds()  argument
1978 	scm->fp = UNIXCB(skb).fp;  in unix_detach_fds()
1981 	unix_destroy_fpl(scm->fp);  in unix_detach_fds()
1984 static void unix_peek_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_peek_fds()  argument
1986 	scm->fp = scm_fp_dup(UNIXCB(skb).fp);  in unix_peek_fds()
1991 	struct scm_cookie scm;  in unix_destruct_scm()  local
1993 	memset(&scm, 0, sizeof(scm));  in unix_destruct_scm()
1994 	scm.pid = UNIXCB(skb).pid;  in unix_destruct_scm()
1996 		unix_detach_fds(&scm, skb);  in unix_destruct_scm()
2000 	scm_destroy(&scm);  in unix_destruct_scm()
2004 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)  in unix_scm_to_skb()  argument
2008 	UNIXCB(skb).pid = get_pid(scm->pid);  in unix_scm_to_skb()
2009 	UNIXCB(skb).uid = scm->creds.uid;  in unix_scm_to_skb()
2010 	UNIXCB(skb).gid = scm->creds.gid;  in unix_scm_to_skb()
2012 	unix_get_secdata(scm, skb);  in unix_scm_to_skb()
2013 	if (scm->fp && send_fds)  in unix_scm_to_skb()
2014 		err = unix_attach_fds(scm, skb);  in unix_scm_to_skb()
2020 static void unix_skb_to_scm(struct sk_buff *skb, struct scm_cookie *scm)  in unix_skb_to_scm()  argument
2022 	scm_set_cred(scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in unix_skb_to_scm()
2023 	unix_set_secdata(scm, skb);  in unix_skb_to_scm()
2063 			    struct scm_cookie *scm)  in unix_skb_scm_eq()  argument
2065 	return UNIXCB(skb).pid == scm->pid &&  in unix_skb_scm_eq()
2066 	       uid_eq(UNIXCB(skb).uid, scm->creds.uid) &&  in unix_skb_scm_eq()
2067 	       gid_eq(UNIXCB(skb).gid, scm->creds.gid) &&  in unix_skb_scm_eq()
2068 	       unix_secdata_eq(scm, skb);  in unix_skb_scm_eq()
2102 	struct scm_cookie scm;  in unix_dgram_sendmsg()  local
2109 	err = scm_send(sock, msg, &scm, false);  in unix_dgram_sendmsg()
2113 	wait_for_unix_gc(scm.fp);  in unix_dgram_sendmsg()
2159 	err = unix_scm_to_skb(&scm, skb, true);  in unix_dgram_sendmsg()
2311 	scm_destroy(&scm);  in unix_dgram_sendmsg()
2323 	scm_destroy(&scm);  in unix_dgram_sendmsg()
2334 		     struct scm_cookie *scm, bool fds_sent)  in queue_oob()  argument
2345 	err = unix_scm_to_skb(scm, skb, !fds_sent);  in queue_oob()
2400 	struct scm_cookie scm;  in unix_stream_sendmsg()  local
2404 	err = scm_send(sock, msg, &scm, false);  in unix_stream_sendmsg()
2408 	wait_for_unix_gc(scm.fp);  in unix_stream_sendmsg()
2463 		err = unix_scm_to_skb(&scm, skb, !fds_sent);  in unix_stream_sendmsg()
2516 		err = queue_oob(sk, msg, other, &scm, fds_sent);  in unix_stream_sendmsg()
2523 	scm_destroy(&scm);  in unix_stream_sendmsg()
2536 	scm_destroy(&scm);  in unix_stream_sendmsg()
2583 	struct scm_cookie scm;  in __unix_dgram_recvmsg()  local
2650 	memset(&scm, 0, sizeof(scm));  in __unix_dgram_recvmsg()
2652 	unix_skb_to_scm(skb, &scm);  in __unix_dgram_recvmsg()
2656 			unix_detach_fds(&scm, skb);  in __unix_dgram_recvmsg()
2676 			unix_peek_fds(&scm, skb);  in __unix_dgram_recvmsg()
2680 	scm_recv_unix(sock, msg, &scm, flags);  in __unix_dgram_recvmsg()
2928 	struct scm_cookie scm;  in unix_stream_read_generic()  local
2953 	memset(&scm, 0, sizeof(scm));  in unix_stream_read_generic()
3014 				scm_destroy(&scm);  in unix_stream_read_generic()
3038 			if (!unix_skb_scm_eq(skb, &scm))  in unix_stream_read_generic()
3042 			unix_skb_to_scm(skb, &scm);  in unix_stream_read_generic()
3075 				unix_detach_fds(&scm, skb);  in unix_stream_read_generic()
3088 			if (scm.fp)  in unix_stream_read_generic()
3094 				unix_peek_fds(&scm, skb);  in unix_stream_read_generic()
3115 		scm_recv_unix(sock, msg, &scm, flags);  in unix_stream_read_generic()
3123 		scm_destroy(&scm);  in unix_stream_read_generic()