diff mbox series

[09/11] Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>

Message ID 20230421052255.5603-10-krm.taha@outlook.com
State New
Headers show
Series Contribution task implementations, for the 'FreeBSD user emulation improvements' project. | expand

Commit Message

Karim Taha April 21, 2023, 5:22 a.m. UTC 
From: Stacey Son <sson@FreeBSD.org>

added the accept(2) syscall to bsd-user/bsd-socket.h.
---
 bsd-user/bsd-socket.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
diff mbox series

Patch

diff --git a/bsd-user/bsd-socket.h b/bsd-user/bsd-socket.h
index f191f22d63..f748266730 100644
--- a/bsd-user/bsd-socket.h
+++ b/bsd-user/bsd-socket.h
@@ -79,4 +79,37 @@  static inline abi_long do_bsd_connect(int sockfd, abi_ulong target_addr,
     return get_errno(connect(sockfd, addr, addrlen));
 }
 
+/* accept(2) */
+static inline abi_long do_bsd_accept(int fd, abi_ulong target_addr,
+                                     abi_ulong target_addrlen_addr)
+{
+    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(accept(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 */