new file mode 100644
@@ -0,0 +1,98 @@
+/*
+ * BSD socket system call related helpers
+ *
+ * Copyright (c) 2013 Stacey D. Son
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include "qemu/osdep.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+
+#include "qemu.h"
+#include "qemu-bsd.h"
+
+/*
+ * socket conversion
+ */
+abi_long target_to_host_sockaddr(struct sockaddr *addr, abi_ulong target_addr,
+ socklen_t len)
+{
+ const socklen_t unix_maxlen = sizeof(struct sockaddr_un);
+ sa_family_t sa_family;
+ struct target_sockaddr *target_saddr;
+
+ target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
+ if (target_saddr == 0) {
+ return -TARGET_EFAULT;
+ }
+
+ sa_family = target_saddr->sa_family;
+
+ /*
+ * Oops. The caller might send a incomplete sun_path; sun_path
+ * must be terminated by \0 (see the manual page), but unfortunately
+ * it is quite common to specify sockaddr_un length as
+ * "strlen(x->sun_path)" while it should be "strlen(...) + 1". We will
+ * fix that here if needed.
+ */
+ if (target_saddr->sa_family == AF_UNIX) {
+ if (len < unix_maxlen && len > 0) {
+ char *cp = (char *)target_saddr;
+
+ if (cp[len - 1] && !cp[len]) {
+ len++;
+ }
+ }
+ if (len > unix_maxlen) {
+ len = unix_maxlen;
+ }
+ }
+
+ memcpy(addr, target_saddr, len);
+ addr->sa_family = sa_family; /* type uint8_t */
+ addr->sa_len = target_saddr->sa_len; /* type uint8_t */
+ unlock_user(target_saddr, target_addr, 0);
+
+ return 0;
+}
+
+abi_long host_to_target_sockaddr(abi_ulong target_addr, struct sockaddr *addr,
+ socklen_t len)
+{
+ struct target_sockaddr *target_saddr;
+
+ target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
+ if (target_saddr == 0) {
+ return -TARGET_EFAULT;
+ }
+ memcpy(target_saddr, addr, len);
+ target_saddr->sa_family = addr->sa_family; /* type uint8_t */
+ target_saddr->sa_len = addr->sa_len; /* type uint8_t */
+ unlock_user(target_saddr, target_addr, len);
+
+ return 0;
+}
+
+abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, abi_ulong target_addr,
+ socklen_t len)
+{
+ struct target_ip_mreqn *target_smreqn;
+
+ target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
+ if (target_smreqn == 0) {
+ return -TARGET_EFAULT;
+ }
+ mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
+ mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
+ if (len == sizeof(struct target_ip_mreqn)) {
+ mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
+ }
+ unlock_user(target_smreqn, target_addr, 0);
+
+ return 0;
+}
+
@@ -680,5 +680,85 @@ unimplemented:
return ret;
}
+/* setfib(2) */
+static inline abi_long do_freebsd_setfib(abi_long fib)
+{
+
+ return get_errno(setfib(fib));
+}
+
+/* bindat(2) */
+static inline abi_long do_freebsd_bindat(int fd, int sockfd,
+ abi_ulong target_addr, socklen_t addrlen)
+{
+ abi_long ret;
+ void *addr;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+
+ addr = alloca(addrlen + 1);
+ ret = target_to_host_sockaddr(addr, target_addr, addrlen);
+ if (is_error(ret)) {
+ return ret;
+ }
+
+ return get_errno(bindat(fd, sockfd, addr, addrlen));
+}
+
+/* connectat(2) */
+static inline abi_long do_freebsd_connectat(int fd, int sockfd,
+ abi_ulong target_addr, socklen_t addrlen)
+{
+ abi_long ret;
+ void *addr;
+
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+ addr = alloca(addrlen);
+
+ ret = target_to_host_sockaddr(addr, target_addr, addrlen);
+
+ if (is_error(ret)) {
+ return ret;
+ }
+
+ return get_errno(connectat(fd, sockfd, addr, addrlen));
+}
+
+/* accept4(2) */
+static inline abi_long do_freebsd_accept4(int fd, abi_ulong target_addr,
+ abi_ulong target_addrlen_addr, int flags)
+{
+ socklen_t addrlen;
+ void *addr;
+ abi_long ret;
+
+ if (target_addr == 0) {
+ return get_errno(accept(fd, NULL, NULL));
+ }
+ /* return EINVAL if addrlen pointer is invalid */
+ if (get_user_u32(addrlen, target_addrlen_addr)) {
+ return -TARGET_EINVAL;
+ }
+ if ((int)addrlen < 0) {
+ return -TARGET_EINVAL;
+ }
+ if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) {
+ return -TARGET_EINVAL;
+ }
+ addr = alloca(addrlen);
+
+ ret = get_errno(accept4(fd, addr, &addrlen, flags));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, addrlen);
+ if (put_user_u32(addrlen, target_addrlen_addr)) {
+ ret = -TARGET_EFAULT;
+ }
+ }
+ return ret;
+}
#endif /* BSD_USER_FREEBSD_OS_SOCKET_H */
@@ -11,6 +11,7 @@ bsd_user_ss.add(files(
'bsd-mem.c',
'bsd-misc.c',
'bsd-proc.c',
+ 'bsd-socket.c',
'bsdload.c',
'elfload.c',
'main.c',
@@ -32,6 +32,14 @@ int host_to_target_waitstatus(int status);
void h2g_rusage(const struct rusage *rusage,
struct target_freebsd_rusage *target_rusage);
+/* bsd-socket.c */
+abi_long target_to_host_sockaddr(struct sockaddr *addr, abi_ulong target_addr,
+ socklen_t len);
+abi_long host_to_target_sockaddr(abi_ulong target_addr, struct sockaddr *addr,
+ socklen_t len);
+abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, abi_ulong target_addr,
+ socklen_t len);
+
/* bsd-misc.c */
abi_long host_to_target_uuid(abi_ulong target_addr, struct uuid *host_uuid);