diff --git a/linux-user/alpha/sockbits.h b/linux-user/alpha/sockbits.h
index 4db3e52b67..f5397dd875 100644
--- a/linux-user/alpha/sockbits.h
+++ b/linux-user/alpha/sockbits.h
@@ -75,39 +75,9 @@
 /* Instruct lower device to use last 4-bytes of skb data as FCS */
 #define TARGET_SO_NOFCS     43
 
-/** sock_type - Socket types
- *
- * Please notice that for binary compat reasons ALPHA has to
- * override the enum sock_type in include/linux/net.h, so
- * we define ARCH_HAS_SOCKET_TYPES here.
- *
- * @SOCK_DGRAM - datagram (conn.less) socket
- * @SOCK_STREAM - stream (connection) socket
- * @SOCK_RAW - raw socket
- * @SOCK_RDM - reliably-delivered message
- * @SOCK_SEQPACKET - sequential packet socket
- * @SOCK_DCCP - Datagram Congestion Control Protocol socket
- * @SOCK_PACKET - linux specific way of getting packets at the dev level.
- *                For writing rarp and other similar things on the user
- *                level.
- * @SOCK_CLOEXEC - sets the close-on-exec (FD_CLOEXEC) flag.
- * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
+/* TARGET_O_NONBLOCK clashes with the bits used for socket types.  Therefore we
+ * have to define SOCK_NONBLOCK to a different value here.
  */
+#define TARGET_SOCK_NONBLOCK   0x40000000
 
-#define ARCH_HAS_SOCKET_TYPES          1
-
-enum sock_type {
-       TARGET_SOCK_STREAM      = 1,
-       TARGET_SOCK_DGRAM       = 2,
-       TARGET_SOCK_RAW         = 3,
-       TARGET_SOCK_RDM         = 4,
-       TARGET_SOCK_SEQPACKET   = 5,
-       TARGET_SOCK_DCCP        = 6,
-       TARGET_SOCK_PACKET      = 10,
-       TARGET_SOCK_CLOEXEC     = 010000000,
-       TARGET_SOCK_NONBLOCK    = 010000000000,
-};
-
-#define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
-#define TARGET_SOCK_TYPE_MASK    0xf  /* Covers up to TARGET_SOCK_MAX-1. */
 #endif
diff --git a/linux-user/hppa/sockbits.h b/linux-user/hppa/sockbits.h
index 5044619e16..2641aea859 100644
--- a/linux-user/hppa/sockbits.h
+++ b/linux-user/hppa/sockbits.h
@@ -64,34 +64,7 @@
 
 #define TARGET_SO_CNX_ADVICE           0x402E
 
-/** sock_type - Socket types - default values
- *
- *
- * @SOCK_STREAM - stream (connection) socket
- * @SOCK_DGRAM - datagram (conn.less) socket
- * @SOCK_RAW - raw socket
- * @SOCK_RDM - reliably-delivered message
- * @SOCK_SEQPACKET - sequential packet socket
- * @SOCK_DCCP - Datagram Congestion Control Protocol socket
- * @SOCK_PACKET - linux specific way of getting packets at the dev level.
- *                For writing rarp and other similar things on the user
- *                level.
- * @SOCK_CLOEXEC - sets the close-on-exec (FD_CLOEXEC) flag.
- * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
+/* TARGET_O_NONBLOCK clashes with the bits used for socket types.  Therefore we
+ * have to define SOCK_NONBLOCK to a different value here.
  */
-enum sock_type {
-   TARGET_SOCK_STREAM      = 1,
-   TARGET_SOCK_DGRAM       = 2,
-   TARGET_SOCK_RAW         = 3,
-   TARGET_SOCK_RDM         = 4,
-   TARGET_SOCK_SEQPACKET   = 5,
-   TARGET_SOCK_DCCP        = 6,
-   TARGET_SOCK_PACKET      = 10,
-   TARGET_SOCK_CLOEXEC     = 010000000,
-   TARGET_SOCK_NONBLOCK    = 0x40000000,
-};
-
-#define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
-#define TARGET_SOCK_TYPE_MASK    0xf  /* Covers up to TARGET_SOCK_MAX-1. */
-
-#define ARCH_HAS_SOCKET_TYPES 1
+#define TARGET_SOCK_NONBLOCK   0x40000000
diff --git a/linux-user/mips/sockbits.h b/linux-user/mips/sockbits.h
index 3fe5ac88e7..370d13ed86 100644
--- a/linux-user/mips/sockbits.h
+++ b/linux-user/mips/sockbits.h
@@ -91,7 +91,7 @@
  * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
  */
 
-#define ARCH_HAS_SOCKET_TYPES          1
+#define TARGET_ARCH_HAS_SOCKET_TYPES          1
 
 enum sock_type {
        TARGET_SOCK_DGRAM       = 1,
@@ -101,10 +101,13 @@ enum sock_type {
        TARGET_SOCK_SEQPACKET   = 5,
        TARGET_SOCK_DCCP        = 6,
        TARGET_SOCK_PACKET      = 10,
-       TARGET_SOCK_CLOEXEC     = 02000000,
-       TARGET_SOCK_NONBLOCK    = 0200,
 };
 
 #define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
 #define TARGET_SOCK_TYPE_MASK    0xf  /* Covers up to TARGET_SOCK_MAX-1. */
+
+/* Flags for socket, socketpair, paccept */
+#define TARGET_SOCK_CLOEXEC    TARGET_O_CLOEXEC
+#define TARGET_SOCK_NONBLOCK   TARGET_O_NONBLOCK
+
 #endif
diff --git a/linux-user/socket.h b/linux-user/socket.h
index 135f438bdf..8de8681015 100644
--- a/linux-user/socket.h
+++ b/linux-user/socket.h
@@ -1,35 +1,37 @@
-
 #include "sockbits.h"
 
-#ifndef ARCH_HAS_SOCKET_TYPES
-    /** sock_type - Socket types - default values
-     *
-     *
-     * @SOCK_STREAM - stream (connection) socket
-     * @SOCK_DGRAM - datagram (conn.less) socket
-     * @SOCK_RAW - raw socket
-     * @SOCK_RDM - reliably-delivered message
-     * @SOCK_SEQPACKET - sequential packet socket
-     * @SOCK_DCCP - Datagram Congestion Control Protocol socket
-     * @SOCK_PACKET - linux specific way of getting packets at the dev level.
-     *                For writing rarp and other similar things on the user
-     *                level.
-     * @SOCK_CLOEXEC - sets the close-on-exec (FD_CLOEXEC) flag.
-     * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
-     */
-    enum sock_type {
-           TARGET_SOCK_STREAM      = 1,
-           TARGET_SOCK_DGRAM       = 2,
-           TARGET_SOCK_RAW         = 3,
-           TARGET_SOCK_RDM         = 4,
-           TARGET_SOCK_SEQPACKET   = 5,
-           TARGET_SOCK_DCCP        = 6,
-           TARGET_SOCK_PACKET      = 10,
-           TARGET_SOCK_CLOEXEC     = 02000000,
-           TARGET_SOCK_NONBLOCK    = 04000,
-    };
+#ifndef TARGET_ARCH_HAS_SOCKET_TYPES
+/** sock_type - Socket types - default values
+ *
+ *
+ * @SOCK_STREAM - stream (connection) socket
+ * @SOCK_DGRAM - datagram (conn.less) socket
+ * @SOCK_RAW - raw socket
+ * @SOCK_RDM - reliably-delivered message
+ * @SOCK_SEQPACKET - sequential packet socket
+ * @SOCK_DCCP - Datagram Congestion Control Protocol socket
+ * @SOCK_PACKET - linux specific way of getting packets at the dev level.
+ *                For writing rarp and other similar things on the user
+ *                level.
+ * @SOCK_CLOEXEC - sets the close-on-exec (FD_CLOEXEC) flag.
+ * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
+ */
+enum sock_type {
+       TARGET_SOCK_STREAM      = 1,
+       TARGET_SOCK_DGRAM       = 2,
+       TARGET_SOCK_RAW         = 3,
+       TARGET_SOCK_RDM         = 4,
+       TARGET_SOCK_SEQPACKET   = 5,
+       TARGET_SOCK_DCCP        = 6,
+       TARGET_SOCK_PACKET      = 10,
+};
 
-    #define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
-    #define TARGET_SOCK_TYPE_MASK    0xf  /* Covers up to TARGET_SOCK_MAX-1. */
+#define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
+#define TARGET_SOCK_TYPE_MASK    0xf  /* Covers up to TARGET_SOCK_MAX-1. */
 
+/* Flags for socket, socketpair, accept4 */
+#define TARGET_SOCK_CLOEXEC    TARGET_O_CLOEXEC
+#ifndef TARGET_SOCK_NONBLOCK
+#define TARGET_SOCK_NONBLOCK   O_NONBLOCK
 #endif
+#endif /* TARGET_ARCH_HAS_SOCKET_TYPES */
diff --git a/linux-user/sparc/sockbits.h b/linux-user/sparc/sockbits.h
index 385061c8b0..6434b07033 100644
--- a/linux-user/sparc/sockbits.h
+++ b/linux-user/sparc/sockbits.h
@@ -8,42 +8,6 @@
 #ifndef SPARC_SOCKBITS_H
 #define SPARC_SOCKBITS_H
 
-/** sock_type - Socket types
- *
- * Please notice that for binary compat reasons SPARC has to
- * override the enum sock_type in include/linux/net.h, so
- * we define ARCH_HAS_SOCKET_TYPES here.
- *
- * @SOCK_DGRAM - datagram (conn.less) socket
- * @SOCK_STREAM - stream (connection) socket
- * @SOCK_RAW - raw socket
- * @SOCK_RDM - reliably-delivered message
- * @SOCK_SEQPACKET - sequential packet socket
- * @SOCK_DCCP - Datagram Congestion Control Protocol socket
- * @SOCK_PACKET - linux specific way of getting packets at the dev level.
- *                For writing rarp and other similar things on the user
- *                level.
- * @SOCK_CLOEXEC - sets the close-on-exec (FD_CLOEXEC) flag.
- * @SOCK_NONBLOCK - sets the O_NONBLOCK file status flag.
- */
-
-#define ARCH_HAS_SOCKET_TYPES          1
-
-enum sock_type {
-       TARGET_SOCK_STREAM      = 1,
-       TARGET_SOCK_DGRAM       = 2,
-       TARGET_SOCK_RAW         = 3,
-       TARGET_SOCK_RDM         = 4,
-       TARGET_SOCK_SEQPACKET   = 5,
-       TARGET_SOCK_DCCP        = 6,
-       TARGET_SOCK_PACKET      = 10,
-       TARGET_SOCK_CLOEXEC     = 020000000,
-       TARGET_SOCK_NONBLOCK    = 040000,
-};
-
-#define TARGET_SOCK_MAX (TARGET_SOCK_PACKET + 1)
-#define TARGET_SOCK_TYPE_MASK    0xf  /* Covers up to TARGET_SOCK_MAX-1. */
-
 #define TARGET_SO_PASSSEC        31
 
 /* For setsockopt(2) */
