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diff --git a/sys/compat/linux/linux.c b/sys/compat/linux/linux.c
--- a/sys/compat/linux/linux.c
+++ b/sys/compat/linux/linux.c
@@ -501,8 +501,8 @@
return (ENOENT);
}
-int
-linux_to_bsd_domain(int domain)
+sa_family_t
+linux_to_bsd_domain(sa_family_t domain)
{
switch (domain) {
@@ -523,11 +523,11 @@
case LINUX_AF_NETLINK:
return (AF_NETLINK);
}
- return (-1);
+ return (AF_UNKNOWN);
}
-int
-bsd_to_linux_domain(int domain)
+sa_family_t
+bsd_to_linux_domain(sa_family_t domain)
{
switch (domain) {
@@ -548,7 +548,7 @@
case AF_NETLINK:
return (LINUX_AF_NETLINK);
}
- return (-1);
+ return (AF_UNKNOWN);
}
/*
@@ -562,13 +562,13 @@
socklen_t len)
{
struct l_sockaddr *kosa;
- int bdom;
+ sa_family_t bdom;
*lsa = NULL;
if (len < 2 || len > UCHAR_MAX)
return (EINVAL);
bdom = bsd_to_linux_domain(sa->sa_family);
- if (bdom == -1)
+ if (bdom == AF_UNKNOWN)
return (EAFNOSUPPORT);
kosa = malloc(len, M_LINUX, M_WAITOK);
@@ -615,7 +615,7 @@
goto out;
bdom = linux_to_bsd_domain(kosa->sa_family);
- if (bdom == -1) {
+ if (bdom == AF_UNKNOWN) {
error = EAFNOSUPPORT;
goto out;
}
diff --git a/sys/compat/linux/linux_common.h b/sys/compat/linux/linux_common.h
--- a/sys/compat/linux/linux_common.h
+++ b/sys/compat/linux/linux_common.h
@@ -38,8 +38,9 @@
int linux_ifhwaddr(struct ifnet *ifp, struct l_sockaddr *lsa);
unsigned short bsd_to_linux_ifflags(int);
-int linux_to_bsd_domain(int domain);
-int bsd_to_linux_domain(int domain);
+sa_family_t linux_to_bsd_domain(sa_family_t domain);
+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,
diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c
--- a/sys/compat/linux/linux_socket.c
+++ b/sys/compat/linux/linux_socket.c
@@ -870,7 +870,8 @@
int
linux_socket(struct thread *td, struct linux_socket_args *args)
{
- int domain, retval_socket, type;
+ int retval_socket, type;
+ sa_family_t domain;
type = args->type & LINUX_SOCK_TYPE_MASK;
if (type < 0 || type > LINUX_SOCK_MAX)
@@ -880,7 +881,7 @@
if (retval_socket != 0)
return (retval_socket);
domain = linux_to_bsd_domain(args->domain);
- if (domain == -1) {
+ if (domain == AF_UNKNOWN) {
/* Mask off SOCK_NONBLOCK / CLOEXEC for error messages. */
type = args->type & LINUX_SOCK_TYPE_MASK;
if (args->domain == LINUX_AF_NETLINK &&
@@ -2309,8 +2310,8 @@
name, &newval, UIO_SYSSPACE, &len);
if (error != 0)
return (error);
- newval = bsd_to_linux_domain(newval);
- if (newval == -1)
+ newval = bsd_to_linux_domain((sa_family_t)newval);
+ if (newval == AF_UNKNOWN)
return (ENOPROTOOPT);
return (linux_sockopt_copyout(td, &newval,
len, args));

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