5 files changed, 51 insertions, 13 deletions

diff --git a/sys/compat/linux/linux.c b/sys/compat/linux/linux.c
index 61b207070963..a40f110634f7 100644
--- a/sys/compat/linux/linux.c
+++ b/sys/compat/linux/linux.c
@@ -578,8 +578,13 @@ bsd_to_linux_sockaddr(const struct sockaddr *sa, struct l_sockaddr **lsa,
 	return (0);
 }
 
+/*
+ * If sap is NULL, then osa points at already copied in linux sockaddr that
+ * should be edited in place.  Otherwise memory is allocated, sockaddr
+ * copied in and returned in *sap.
+ */
 int
-linux_to_bsd_sockaddr(const struct l_sockaddr *osa, struct sockaddr **sap,
+linux_to_bsd_sockaddr(struct l_sockaddr *osa, struct sockaddr **sap,
     socklen_t *len)
 {
 	struct sockaddr *sa;
@@ -609,10 +614,12 @@ linux_to_bsd_sockaddr(const struct l_sockaddr *osa, struct sockaddr **sap,
 	}
 #endif
 
-	kosa = malloc(salen, M_SONAME, M_WAITOK);
-
-	if ((error = copyin(osa, kosa, *len)))
-		goto out;
+	if (sap != NULL) {
+		kosa = malloc(salen, M_SONAME, M_WAITOK);
+		if ((error = copyin(osa, kosa, *len)))
+			goto out;
+	} else
+		kosa = osa;
 
 	bdom = linux_to_bsd_domain(kosa->sa_family);
 	if (bdom == AF_UNKNOWN) {
@@ -686,12 +693,15 @@ linux_to_bsd_sockaddr(const struct l_sockaddr *osa, struct sockaddr **sap,
 	sa->sa_family = bdom;
 	sa->sa_len = salen;
 
-	*sap = sa;
-	*len = salen;
+	if (sap != NULL) {
+		*sap = sa;
+		*len = salen;
+	}
 	return (0);
 
 out:
-	free(kosa, M_SONAME);
+	if (sap != NULL)
+		free(kosa, M_SONAME);
 	return (error);
 }
 
diff --git a/sys/compat/linux/linux_common.h b/sys/compat/linux/linux_common.h
index 97f5a259f300..814c183b338a 100644
--- a/sys/compat/linux/linux_common.h
+++ b/sys/compat/linux/linux_common.h
@@ -43,7 +43,7 @@ sa_family_t	bsd_to_linux_domain(sa_family_t domain);
 #define	AF_UNKNOWN	UINT8_MAX
 int		bsd_to_linux_sockaddr(const struct sockaddr *sa,
 		    struct l_sockaddr **lsa, socklen_t len);
-int		linux_to_bsd_sockaddr(const struct l_sockaddr *lsa,
+int		linux_to_bsd_sockaddr(struct l_sockaddr *lsa,
 		    struct sockaddr **sap, socklen_t *len);
 void		linux_to_bsd_poll_events(struct thread *td, int fd,
 		    short lev, short *bev);
diff --git a/sys/compat/linux/linux_event.c b/sys/compat/linux/linux_event.c
index e88791659f1f..fc3ef7c3e90a 100644
--- a/sys/compat/linux/linux_event.c
+++ b/sys/compat/linux/linux_event.c
@@ -104,7 +104,7 @@ static int
 epoll_create_common(struct thread *td, int flags)
 {
 
-	return (kern_kqueue(td, flags, NULL));
+	return (kern_kqueue(td, flags, false, NULL));
 }
 
 #ifdef LINUX_LEGACY_SYSCALLS
diff --git a/sys/compat/linux/linux_futex.c b/sys/compat/linux/linux_futex.c
index 37d0142bae8b..0586eb55a8f3 100644
--- a/sys/compat/linux/linux_futex.c
+++ b/sys/compat/linux/linux_futex.c
@@ -251,7 +251,7 @@ linux_futex(struct thread *td, struct linux_futex_args *args)
 		 * set LINUX_BI_FUTEX_REQUEUE bit of Brandinfo flags.
 		 */
 		p = td->td_proc;
-		Elf_Brandinfo *bi = p->p_elf_brandinfo;
+		const Elf_Brandinfo *bi = p->p_elf_brandinfo;
 		if (bi == NULL || ((bi->flags & LINUX_BI_FUTEX_REQUEUE)) == 0)
 			return (EINVAL);
 		args->val3_compare = false;
diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c
index 0e07b0a60ced..b1a483ce611c 100644
--- a/sys/compat/linux/linux_socket.c
+++ b/sys/compat/linux/linux_socket.c
@@ -2146,7 +2146,8 @@ linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args)
 		return (ENOPROTOOPT);
 	}
 
-	if (name == IPV6_NEXTHOP) {
+	switch (name) {
+	case IPV6_NEXTHOP: {
 		len = args->optlen;
 		error = linux_to_bsd_sockaddr(PTRIN(args->optval), &sa, &len);
 		if (error != 0)
@@ -2155,7 +2156,34 @@ linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args)
 		error = kern_setsockopt(td, args->s, level,
 		    name, sa, UIO_SYSSPACE, len);
 		free(sa, M_SONAME);
-	} else {
+		break;
+	}
+	case MCAST_JOIN_GROUP:
+	case MCAST_LEAVE_GROUP:
+	case MCAST_JOIN_SOURCE_GROUP:
+	case MCAST_LEAVE_SOURCE_GROUP: {
+		struct group_source_req req;
+		size_t size;
+
+		size = (name == MCAST_JOIN_SOURCE_GROUP ||
+		    name == MCAST_LEAVE_SOURCE_GROUP) ?
+		    sizeof(struct group_source_req) : sizeof(struct group_req);
+
+		if ((error = copyin(PTRIN(args->optval), &req, size)))
+			return (error);
+		len = sizeof(struct sockaddr_storage);
+		if ((error = linux_to_bsd_sockaddr(
+		    (struct l_sockaddr *)&req.gsr_group, NULL, &len)))
+			return (error);
+		if (size == sizeof(struct group_source_req) &&
+		    (error = linux_to_bsd_sockaddr(
+		    (struct l_sockaddr *)&req.gsr_source, NULL, &len)))
+			return (error);
+		error = kern_setsockopt(td, args->s, level, name, &req,
+		    UIO_SYSSPACE, size);
+		break;
+	}
+	default:
 		error = kern_setsockopt(td, args->s, level,
 		    name, PTRIN(args->optval), UIO_USERSPACE, args->optlen);
 	}