105 #include <net/scm.h>
253 static void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
255 	UNIXCB(skb).secid = scm->secid;  in unix_get_secdata()
258 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
260 	scm->secid = UNIXCB(skb).secid;  in unix_set_secdata()
263 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
265 	return (scm->secid == UNIXCB(skb).secid);  in unix_secdata_eq()
268 static inline void unix_get_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_get_secdata()  argument
271 static inline void unix_set_secdata(struct scm_cookie *scm, struct sk_buff *skb)  in unix_set_secdata()  argument
274 static inline bool unix_secdata_eq(struct scm_cookie *scm, struct sk_buff *skb)  in unix_secdata_eq()  argument
1830 static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_attach_fds()  argument
1835 	UNIXCB(skb).fp = scm->fp;  in unix_attach_fds()
1836 	scm->fp = NULL;  in unix_attach_fds()
1844 static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_detach_fds()  argument
1846 	scm->fp = UNIXCB(skb).fp;  in unix_detach_fds()
1849 	unix_destroy_fpl(scm->fp);  in unix_detach_fds()
1852 static void unix_peek_fds(struct scm_cookie *scm, struct sk_buff *skb)  in unix_peek_fds()  argument
1854 	scm->fp = scm_fp_dup(UNIXCB(skb).fp);  in unix_peek_fds()
1859 	struct scm_cookie scm;  in unix_destruct_scm()  local
1861 	memset(&scm, 0, sizeof(scm));  in unix_destruct_scm()
1862 	scm.pid  = UNIXCB(skb).pid;  in unix_destruct_scm()
1864 		unix_detach_fds(&scm, skb);  in unix_destruct_scm()
1868 	scm_destroy(&scm);  in unix_destruct_scm()
1872 static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)  in unix_scm_to_skb()  argument
1876 	UNIXCB(skb).pid  = get_pid(scm->pid);  in unix_scm_to_skb()
1877 	UNIXCB(skb).uid = scm->creds.uid;  in unix_scm_to_skb()
1878 	UNIXCB(skb).gid = scm->creds.gid;  in unix_scm_to_skb()
1880 	unix_get_secdata(scm, skb);  in unix_scm_to_skb()
1881 	if (scm->fp && send_fds)  in unix_scm_to_skb()
1882 		err = unix_attach_fds(scm, skb);  in unix_scm_to_skb()
1915 			    struct scm_cookie *scm)  in unix_skb_scm_eq()  argument
1917 	return UNIXCB(skb).pid == scm->pid &&  in unix_skb_scm_eq()
1918 	       uid_eq(UNIXCB(skb).uid, scm->creds.uid) &&  in unix_skb_scm_eq()
1919 	       gid_eq(UNIXCB(skb).gid, scm->creds.gid) &&  in unix_skb_scm_eq()
1920 	       unix_secdata_eq(scm, skb);  in unix_skb_scm_eq()
1954 	struct scm_cookie scm;  in unix_dgram_sendmsg()  local
1961 	err = scm_send(sock, msg, &scm, false);  in unix_dgram_sendmsg()
1965 	wait_for_unix_gc(scm.fp);  in unix_dgram_sendmsg()
2013 	err = unix_scm_to_skb(&scm, skb, true);  in unix_dgram_sendmsg()
2156 	scm_destroy(&scm);  in unix_dgram_sendmsg()
2168 	scm_destroy(&scm);  in unix_dgram_sendmsg()
2179 		     struct scm_cookie *scm, bool fds_sent)  in queue_oob()  argument
2190 	err = unix_scm_to_skb(scm, skb, !fds_sent);  in queue_oob()
2234 	struct scm_cookie scm;  in unix_stream_sendmsg()  local
2238 	err = scm_send(sock, msg, &scm, false);  in unix_stream_sendmsg()
2242 	wait_for_unix_gc(scm.fp);  in unix_stream_sendmsg()
2295 		err = unix_scm_to_skb(&scm, skb, !fds_sent);  in unix_stream_sendmsg()
2335 		err = queue_oob(sock, msg, other, &scm, fds_sent);  in unix_stream_sendmsg()
2342 	scm_destroy(&scm);  in unix_stream_sendmsg()
2355 	scm_destroy(&scm);  in unix_stream_sendmsg()
2402 	struct scm_cookie scm;  in __unix_dgram_recvmsg()  local
2471 	memset(&scm, 0, sizeof(scm));  in __unix_dgram_recvmsg()
2473 	scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in __unix_dgram_recvmsg()
2474 	unix_set_secdata(&scm, skb);  in __unix_dgram_recvmsg()
2478 			unix_detach_fds(&scm, skb);  in __unix_dgram_recvmsg()
2498 			unix_peek_fds(&scm, skb);  in __unix_dgram_recvmsg()
2502 	scm_recv_unix(sock, msg, &scm, flags);  in __unix_dgram_recvmsg()
2741 	struct scm_cookie scm;  in unix_stream_read_generic()  local
2772 	memset(&scm, 0, sizeof(scm));  in unix_stream_read_generic()
2831 				scm_destroy(&scm);  in unix_stream_read_generic()
2855 			if (!unix_skb_scm_eq(skb, &scm))  in unix_stream_read_generic()
2860 			scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid);  in unix_stream_read_generic()
2861 			unix_set_secdata(&scm, skb);  in unix_stream_read_generic()
2896 				unix_detach_fds(&scm, skb);  in unix_stream_read_generic()
2905 			if (scm.fp)  in unix_stream_read_generic()
2911 				unix_peek_fds(&scm, skb);  in unix_stream_read_generic()
2932 		scm_recv_unix(sock, state->msg, &scm, flags);  in unix_stream_read_generic()
2934 		scm_destroy(&scm);  in unix_stream_read_generic()