42 void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm);
43 void scm_detach_fds_compat(struct msghdr *msg, struct scm_cookie *scm);
44 int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *scm);
45 void __scm_destroy(struct scm_cookie *scm);
49 static __inline__ void unix_get_peersec_dgram(struct socket *sock, struct scm_cookie *scm)  in unix_get_peersec_dgram()  argument
51 	security_socket_getpeersec_dgram(sock, NULL, &scm->secid);  in unix_get_peersec_dgram()
54 static __inline__ void unix_get_peersec_dgram(struct socket *sock, struct scm_cookie *scm)  in unix_get_peersec_dgram()  argument
58 static __inline__ void scm_set_cred(struct scm_cookie *scm,  in scm_set_cred()  argument
61 	scm->pid  = get_pid(pid);  in scm_set_cred()
62 	scm->creds.pid = pid_vnr(pid);  in scm_set_cred()
63 	scm->creds.uid = uid;  in scm_set_cred()
64 	scm->creds.gid = gid;  in scm_set_cred()
67 static __inline__ void scm_destroy_cred(struct scm_cookie *scm)  in scm_destroy_cred()  argument
69 	put_pid(scm->pid);  in scm_destroy_cred()
70 	scm->pid  = NULL;  in scm_destroy_cred()
73 static __inline__ void scm_destroy(struct scm_cookie *scm)  in scm_destroy()  argument
75 	scm_destroy_cred(scm);  in scm_destroy()
76 	if (scm->fp)  in scm_destroy()
77 		__scm_destroy(scm);  in scm_destroy()
81 			       struct scm_cookie *scm, bool forcecreds)  in scm_send()  argument
83 	memset(scm, 0, sizeof(*scm));  in scm_send()
84 	scm->creds.uid = INVALID_UID;  in scm_send()
85 	scm->creds.gid = INVALID_GID;  in scm_send()
87 		scm_set_cred(scm, task_tgid(current), current_uid(), current_gid());  in scm_send()
88 	unix_get_peersec_dgram(sock, scm);  in scm_send()
91 	return __scm_send(sock, msg, scm);  in scm_send()
95 static inline void scm_passec(struct socket *sock, struct msghdr *msg, struct scm_cookie *scm)  in scm_passec()  argument
102 		err = security_secid_to_secctx(scm->secid, &secdata, &seclen);  in scm_passec()
116 static inline void scm_passec(struct socket *sock, struct msghdr *msg, struct scm_cookie *scm)  in scm_passec()  argument
125 static __inline__ void scm_pidfd_recv(struct msghdr *msg, struct scm_cookie *scm)  in scm_pidfd_recv()  argument
143 	if (!scm->pid)  in scm_pidfd_recv()
146 	pidfd = pidfd_prepare(scm->pid, 0, &pidfd_file);  in scm_pidfd_recv()
162 				     struct scm_cookie *scm, int flags)  in __scm_recv_common()  argument
167 		    scm->fp || scm_has_secdata(sock))  in __scm_recv_common()
169 		scm_destroy(scm);  in __scm_recv_common()
176 			.pid = scm->creds.pid,  in __scm_recv_common()
177 			.uid = from_kuid_munged(current_ns, scm->creds.uid),  in __scm_recv_common()
178 			.gid = from_kgid_munged(current_ns, scm->creds.gid),  in __scm_recv_common()
183 	scm_passec(sock, msg, scm);  in __scm_recv_common()
185 	if (scm->fp)  in __scm_recv_common()
186 		scm_detach_fds(msg, scm);  in __scm_recv_common()
192 			    struct scm_cookie *scm, int flags)  in scm_recv()  argument
194 	if (!__scm_recv_common(sock, msg, scm, flags))  in scm_recv()
197 	scm_destroy_cred(scm);  in scm_recv()
201 				 struct scm_cookie *scm, int flags)  in scm_recv_unix()  argument
203 	if (!__scm_recv_common(sock, msg, scm, flags))  in scm_recv_unix()
207 		scm_pidfd_recv(msg, scm);  in scm_recv_unix()
209 	scm_destroy_cred(scm);  in scm_recv_unix()