Index: sys/kern/uipc_syscalls.c
===================================================================
--- sys/kern/uipc_syscalls.c
+++ sys/kern/uipc_syscalls.c
@@ -89,20 +89,23 @@
 /*
  * Convert a user file descriptor to a kernel file entry and check if required
  * capability rights are present.
+ * If required copy of current set of capability rights is returned.
  * A reference on the file entry is held upon returning.
  */
 int
 getsock_cap(struct thread *td, int fd, cap_rights_t *rightsp,
-    struct file **fpp, u_int *fflagp)
+    struct file **fpp, u_int *fflagp, struct filecaps *havecapsp)
 {
 	struct file *fp;
 	int error;
 
-	error = fget_unlocked(td->td_proc->p_fd, fd, rightsp, &fp, NULL);
+	error = fget_cap(td, fd, rightsp, &fp, havecapsp);
 	if (error != 0)
 		return (error);
 	if (fp->f_type != DTYPE_SOCKET) {
 		fdrop(fp, td);
+		if (havecapsp != NULL)
+			filecaps_free(havecapsp);
 		return (ENOTSOCK);
 	}
 	if (fflagp != NULL)
@@ -188,7 +191,7 @@
 	AUDIT_ARG_FD(fd);
 	AUDIT_ARG_SOCKADDR(td, dirfd, sa);
 	error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_BIND),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error != 0)
 		return (error);
 	so = fp->f_data;
@@ -235,7 +238,7 @@
 
 	AUDIT_ARG_FD(uap->s);
 	error = getsock_cap(td, uap->s, cap_rights_init(&rights, CAP_LISTEN),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error == 0) {
 		so = fp->f_data;
 #ifdef MAC
@@ -308,6 +311,7 @@
 	struct file *headfp, *nfp = NULL;
 	struct sockaddr *sa = NULL;
 	struct socket *head, *so;
+	struct filecaps fcaps;
 	cap_rights_t rights;
 	u_int fflag;
 	pid_t pgid;
@@ -318,7 +322,7 @@
 
 	AUDIT_ARG_FD(s);
 	error = getsock_cap(td, s, cap_rights_init(&rights, CAP_ACCEPT),
-	    &headfp, &fflag);
+	    &headfp, &fflag, &fcaps);
 	if (error != 0)
 		return (error);
 	head = headfp->f_data;
@@ -331,7 +335,8 @@
 	if (error != 0)
 		goto done;
 #endif
-	error = falloc(td, &nfp, &fd, (flags & SOCK_CLOEXEC) ? O_CLOEXEC : 0);
+	error = falloc_caps(td, &nfp, &fd,
+	    (flags & SOCK_CLOEXEC) ? O_CLOEXEC : 0, &fcaps);
 	if (error != 0)
 		goto done;
 	ACCEPT_LOCK();
@@ -440,6 +445,8 @@
 	 * a reference on nfp to the caller on success if they request it.
 	 */
 done:
+	if (nfp == NULL)
+		filecaps_free(&fcaps);
 	if (fp != NULL) {
 		if (error == 0) {
 			*fp = nfp;
@@ -511,7 +518,7 @@
 	AUDIT_ARG_FD(fd);
 	AUDIT_ARG_SOCKADDR(td, dirfd, sa);
 	error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_CONNECT),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error != 0)
 		return (error);
 	so = fp->f_data;
@@ -754,7 +761,7 @@
 		AUDIT_ARG_SOCKADDR(td, AT_FDCWD, mp->msg_name);
 		cap_rights_set(&rights, CAP_CONNECT);
 	}
-	error = getsock_cap(td, s, &rights, &fp, NULL);
+	error = getsock_cap(td, s, &rights, &fp, NULL, NULL);
 	if (error != 0)
 		return (error);
 	so = (struct socket *)fp->f_data;
@@ -923,7 +930,7 @@
 
 	AUDIT_ARG_FD(s);
 	error = getsock_cap(td, s, cap_rights_init(&rights, CAP_RECV),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error != 0)
 		return (error);
 	so = fp->f_data;
@@ -1198,7 +1205,7 @@
 
 	AUDIT_ARG_FD(uap->s);
 	error = getsock_cap(td, uap->s, cap_rights_init(&rights, CAP_SHUTDOWN),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error == 0) {
 		so = fp->f_data;
 		error = soshutdown(so, uap->how);
@@ -1257,7 +1264,7 @@
 
 	AUDIT_ARG_FD(s);
 	error = getsock_cap(td, s, cap_rights_init(&rights, CAP_SETSOCKOPT),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error == 0) {
 		so = fp->f_data;
 		error = sosetopt(so, &sopt);
@@ -1323,7 +1330,7 @@
 
 	AUDIT_ARG_FD(s);
 	error = getsock_cap(td, s, cap_rights_init(&rights, CAP_GETSOCKOPT),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error == 0) {
 		so = fp->f_data;
 		error = sogetopt(so, &sopt);
@@ -1376,7 +1383,7 @@
 
 	AUDIT_ARG_FD(fd);
 	error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_GETSOCKNAME),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error != 0)
 		return (error);
 	so = fp->f_data;
@@ -1463,7 +1470,7 @@
 
 	AUDIT_ARG_FD(fd);
 	error = getsock_cap(td, fd, cap_rights_init(&rights, CAP_GETPEERNAME),
-	    &fp, NULL);
+	    &fp, NULL, NULL);
 	if (error != 0)
 		return (error);
 	so = fp->f_data;