[PATCH v4 05/11] Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>

[Karim Taha <kariem.taha2.7@gmail.com>]

From: Stacey Son <sson@FreeBSD.org>

Definitions of the socket conversion functions.

Add bsd-user/bsd-socket.c, which contains the actual definitions of the
socket conversion functions.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
---
 bsd-user/bsd-socket.c | 108 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 bsd-user/bsd-socket.c

diff --git a/bsd-user/bsd-socket.c b/bsd-user/bsd-socket.c
new file mode 100644
index 0000000000..8a5e44444d
--- /dev/null
+++ b/bsd-user/bsd-socket.c
@@ -0,0 +1,108 @@
+/*
+ *  BSD socket system call related helpers
+ *
+ *  Copyright (c) 2013 Stacey D. Son
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#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;
+}
-- 
2.40.0