108 #include <net/scm.h>
262 static void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
264 	UNIXCB(skb).secid = scm->secid;  in unix_get_secdata()
267 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
269 	scm->secid = UNIXCB(skb).secid;  in unix_set_secdata()
272 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
274 	return (scm->secid == UNIXCB(skb).secid);  in unix_secdata_eq()
277 static inline void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
280 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
283 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
1840 static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_attach_fds()  argument
1845 	UNIXCB(skb).fp = scm->fp;  in unix_attach_fds()
1846 	scm->fp = NULL;  in unix_attach_fds()
1854 static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_detach_fds()  argument
1856 	scm->fp = UNIXCB(skb).fp;  in unix_detach_fds()
1859 	unix_destroy_fpl(scm->fp);  in unix_detach_fds()
1862 static void unix_peek_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_peek_fds()  argument
1864 	scm->fp = scm_fp_dup(UNIXCB(skb).fp);  in unix_peek_fds()
1869 	struct scm_cookie scm;  in unix_destruct_scm()  local
1871 	memset(&scm, 0, sizeof(scm));  in unix_destruct_scm()
1872 	scm.pid  = UNIXCB(skb).pid;  in unix_destruct_scm()
1874 		unix_detach_fds(&scm, skb);  in unix_destruct_scm()
1878 	scm_destroy(&scm);  in unix_destruct_scm()
1882 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)  in unix_scm_to_skb()  argument
1886 	UNIXCB(skb).pid  = get_pid(scm->pid);  in unix_scm_to_skb()
1887 	UNIXCB(skb).uid = scm->creds.uid;  in unix_scm_to_skb()
1888 	UNIXCB(skb).gid = scm->creds.gid;  in unix_scm_to_skb()
1890 	unix_get_secdata(scm, skb);  in unix_scm_to_skb()
1891 	if (scm->fp && send_fds)  in unix_scm_to_skb()
1892 		err = unix_attach_fds(scm, skb);  in unix_scm_to_skb()
1925 			    struct scm_cookie *scm)  in unix_skb_scm_eq()  argument
1927 	return UNIXCB(skb).pid == scm->pid &&  in unix_skb_scm_eq()
1928 	       uid_eq(UNIXCB(skb).uid, scm->creds.uid) &&  in unix_skb_scm_eq()
1929 	       gid_eq(UNIXCB(skb).gid, scm->creds.gid) &&  in unix_skb_scm_eq()
1930 	       unix_secdata_eq(scm, skb);  in unix_skb_scm_eq()
1964 	struct scm_cookie scm;  in unix_dgram_sendmsg()  local
1971 	err = scm_send(sock, msg, &scm, false);  in unix_dgram_sendmsg()
1975 	wait_for_unix_gc(scm.fp);  in unix_dgram_sendmsg()
2023 	err = unix_scm_to_skb(&scm, skb, true);  in unix_dgram_sendmsg()
2166 	scm_destroy(&scm);  in unix_dgram_sendmsg()
2178 	scm_destroy(&scm);  in unix_dgram_sendmsg()
2189 		     struct scm_cookie *scm, bool fds_sent)  in queue_oob()  argument
2200 	err = unix_scm_to_skb(scm, skb, !fds_sent);  in queue_oob()
2244 	struct scm_cookie scm;  in unix_stream_sendmsg()  local
2248 	err = scm_send(sock, msg, &scm, false);  in unix_stream_sendmsg()
2252 	wait_for_unix_gc(scm.fp);  in unix_stream_sendmsg()
2305 		err = unix_scm_to_skb(&scm, skb, !fds_sent);  in unix_stream_sendmsg()
2345 		err = queue_oob(sock, msg, other, &scm, fds_sent);  in unix_stream_sendmsg()
2352 	scm_destroy(&scm);  in unix_stream_sendmsg()
2365 	scm_destroy(&scm);  in unix_stream_sendmsg()
2412 	struct scm_cookie scm;  in __unix_dgram_recvmsg()  local
2481 	memset(&scm, 0, sizeof(scm));  in __unix_dgram_recvmsg()
2483 	scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in __unix_dgram_recvmsg()
2484 	unix_set_secdata(&scm, skb);  in __unix_dgram_recvmsg()
2488 			unix_detach_fds(&scm, skb);  in __unix_dgram_recvmsg()
2508 			unix_peek_fds(&scm, skb);  in __unix_dgram_recvmsg()
2512 	scm_recv_unix(sock, msg, &scm, flags);  in __unix_dgram_recvmsg()
2751 	struct scm_cookie scm;  in unix_stream_read_generic()  local
2782 	memset(&scm, 0, sizeof(scm));  in unix_stream_read_generic()
2841 				scm_destroy(&scm);  in unix_stream_read_generic()
2865 			if (!unix_skb_scm_eq(skb, &scm))  in unix_stream_read_generic()
2870 			scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in unix_stream_read_generic()
2871 			unix_set_secdata(&scm, skb);  in unix_stream_read_generic()
2906 				unix_detach_fds(&scm, skb);  in unix_stream_read_generic()
2915 			if (scm.fp)  in unix_stream_read_generic()
2921 				unix_peek_fds(&scm, skb);  in unix_stream_read_generic()
2942 		scm_recv_unix(sock, state->msg, &scm, flags);  in unix_stream_read_generic()
2944 		scm_destroy(&scm);  in unix_stream_read_generic()