diff mbox series

[v4,10/11] Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>

Message ID 20230421165351.3177-11-kariem.taha2.7@gmail.com
State New
Headers show
Series Contribution task implementations, for the 'FreeBSD user emulation improvements' project. | expand

Commit Message

Karim Taha April 21, 2023, 4:53 p.m. UTC 
From: Stacey Son <sson@FreeBSD.org>

getpeername(2) syscall.

Add the getpeername(2) syscall to bsd-user/bsd-socket.h.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
---
 bsd-user/bsd-socket.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
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Patch

diff --git a/bsd-user/bsd-socket.h b/bsd-user/bsd-socket.h
index f748266730..16fae3752a 100644
--- a/bsd-user/bsd-socket.h
+++ b/bsd-user/bsd-socket.h
@@ -112,4 +112,32 @@  static inline abi_long do_bsd_accept(int fd, abi_ulong target_addr,
     return ret;
 }
 
+/* getpeername(2) */
+static inline abi_long do_bsd_getpeername(int fd, abi_ulong target_addr,
+                                          abi_ulong target_addrlen_addr)
+{
+    socklen_t addrlen;
+    void *addr;
+    abi_long ret;
+
+    if (get_user_u32(addrlen, target_addrlen_addr)) {
+        return -TARGET_EFAULT;
+    }
+    if ((int)addrlen < 0) {
+        return -TARGET_EINVAL;
+    }
+    if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) {
+        return -TARGET_EFAULT;
+    }
+    addr = alloca(addrlen);
+    ret = get_errno(getpeername(fd, addr, &addrlen));
+    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_SOCKET_H */