diff --git a/block/nbd.c b/block/nbd.c
index 3d711b27352a3236b33cd5c1305e7f56723913a6..eff683c8df114ab0a7dd7d372909a23f02734446 100644
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -415,7 +415,7 @@ static int nbd_establish_connection(BlockDriverState *bs)
 
     /* Now that we're connected, set the socket to be non-blocking and
      * kick the reply mechanism.  */
-    socket_set_nonblock(sock);
+    qemu_set_nonblock(sock);
     qemu_aio_set_fd_handler(sock, nbd_reply_ready, NULL,
                             nbd_have_request, s);
 
diff --git a/block/sheepdog.c b/block/sheepdog.c
index bb67c4c071981d5f991ffeca5cb9c53d917b59f8..987018e20cede10611d13cd82aa796c7c65bb945 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -471,7 +471,7 @@ static int connect_to_sdog(BDRVSheepdogState *s)
         qerror_report_err(err);
         error_free(err);
     } else {
-        socket_set_nonblock(fd);
+        qemu_set_nonblock(fd);
     }
 
     return fd;
diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h
index d225f6dd74f1d7e8ac88af465c4a8b4f43b57778..c5174d76a70365b3f873dc677ae15fc065742cb2 100644
--- a/include/qemu/sockets.h
+++ b/include/qemu/sockets.h
@@ -37,8 +37,8 @@ int qemu_socket(int domain, int type, int protocol);
 int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
 int socket_set_cork(int fd, int v);
 int socket_set_nodelay(int fd);
-void socket_set_block(int fd);
-void socket_set_nonblock(int fd);
+void qemu_set_block(int fd);
+void qemu_set_nonblock(int fd);
 int send_all(int fd, const void *buf, int len1);
 int recv_all(int fd, void *buf, int len1, bool single_read);
 
diff --git a/migration.c b/migration.c
index 7fb21473916b2e04f79834a3de242adcac456462..3b4b467c320ba56beae7abe7d517952ccca2b096 100644
--- a/migration.c
+++ b/migration.c
@@ -121,7 +121,7 @@ void process_incoming_migration(QEMUFile *f)
     int fd = qemu_get_fd(f);
 
     assert(fd != -1);
-    socket_set_nonblock(fd);
+    qemu_set_nonblock(fd);
     qemu_coroutine_enter(co, f);
 }
 
diff --git a/nbd.c b/nbd.c
index d1a67eeaf4a5a00dcdffc39837fa9d266b24d1ae..85187fff9fad83e29cce5a8e2113a027d902aa81 100644
--- a/nbd.c
+++ b/nbd.c
@@ -386,7 +386,7 @@ static int nbd_send_negotiate(NBDClient *client)
         [28 .. 151]   reserved     (0)
      */
 
-    socket_set_block(csock);
+    qemu_set_block(csock);
     rc = -EINVAL;
 
     TRACE("Beginning negotiation.");
@@ -429,7 +429,7 @@ static int nbd_send_negotiate(NBDClient *client)
     TRACE("Negotiation succeeded.");
     rc = 0;
 fail:
-    socket_set_nonblock(csock);
+    qemu_set_nonblock(csock);
     return rc;
 }
 
@@ -443,7 +443,7 @@ int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags,
 
     TRACE("Receiving negotiation.");
 
-    socket_set_block(csock);
+    qemu_set_block(csock);
     rc = -EINVAL;
 
     if (read_sync(csock, buf, 8) != 8) {
@@ -558,7 +558,7 @@ int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags,
     rc = 0;
 
 fail:
-    socket_set_nonblock(csock);
+    qemu_set_nonblock(csock);
     return rc;
 }
 
diff --git a/net/socket.c b/net/socket.c
index 6c3752b88a132127b13f346b0112cdb599a14bbd..87af1d3d3962af07d5bce870974aa1194f168ff2 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -308,7 +308,7 @@ static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr
         }
     }
 
-    socket_set_nonblock(fd);
+    qemu_set_nonblock(fd);
     return fd;
 fail:
     if (fd >= 0)
@@ -519,7 +519,7 @@ static int net_socket_listen_init(NetClientState *peer,
         perror("socket");
         return -1;
     }
-    socket_set_nonblock(fd);
+    qemu_set_nonblock(fd);
 
     /* allow fast reuse */
     val = 1;
@@ -565,7 +565,7 @@ static int net_socket_connect_init(NetClientState *peer,
         perror("socket");
         return -1;
     }
-    socket_set_nonblock(fd);
+    qemu_set_nonblock(fd);
 
     connected = 0;
     for(;;) {
@@ -674,6 +674,7 @@ static int net_socket_udp_init(NetClientState *peer,
         closesocket(fd);
         return -1;
     }
+    qemu_set_nonblock(fd);
 
     s = net_socket_fd_init(peer, model, name, fd, 0);
     if (!s) {
@@ -712,7 +713,11 @@ int net_init_socket(const NetClientOptions *opts, const char *name,
         int fd;
 
         fd = monitor_handle_fd_param(cur_mon, sock->fd);
-        if (fd == -1 || !net_socket_fd_init(peer, "socket", name, fd, 1)) {
+        if (fd == -1) {
+            return -1;
+        }
+        qemu_set_nonblock(fd);
+        if (!net_socket_fd_init(peer, "socket", name, fd, 1)) {
             return -1;
         }
         return 0;
diff --git a/qemu-char.c b/qemu-char.c
index 7acbf53ef602c47293e02ab572eec9f37dacc93d..505a773330fda0e4a08f75f659726c010049daed 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2444,6 +2444,9 @@ static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
         if (fd < 0)
             continue;
 
+        /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
+        qemu_set_block(fd);
+
 #ifndef MSG_CMSG_CLOEXEC
         qemu_set_cloexec(fd);
 #endif
@@ -2574,7 +2577,7 @@ static int tcp_chr_add_client(CharDriverState *chr, int fd)
     if (s->fd != -1)
 	return -1;
 
-    socket_set_nonblock(fd);
+    qemu_set_nonblock(fd);
     if (s->do_nodelay)
         socket_set_nodelay(fd);
     s->fd = fd;
@@ -2726,7 +2729,7 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
         printf("QEMU waiting for connection on: %s\n",
                chr->filename);
         tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
-        socket_set_nonblock(s->listen_fd);
+        qemu_set_nonblock(s->listen_fd);
     }
     return chr;
 }
@@ -2768,7 +2771,7 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
     }
 
     if (!is_waitconnect)
-        socket_set_nonblock(fd);
+        qemu_set_nonblock(fd);
 
     chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
                                   is_waitconnect, &local_err);
@@ -3657,7 +3660,7 @@ static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
     if (error_is_set(errp)) {
         return NULL;
     }
-    socket_set_nonblock(fd);
+    qemu_set_nonblock(fd);
     return qemu_chr_open_tty_fd(fd);
 #else
     error_setg(errp, "character device backend type 'serial' not supported");
diff --git a/savevm.c b/savevm.c
index 406caa90e5b7878fae900cf5a972e19b5dbdcf3f..b1d8988c78a75dc3e059c7b2a853391e1f7e5cb2 100644
--- a/savevm.c
+++ b/savevm.c
@@ -422,7 +422,7 @@ QEMUFile *qemu_fopen_socket(int fd, const char *mode)
 
     s->fd = fd;
     if (mode[0] == 'w') {
-        socket_set_block(s->fd);
+        qemu_set_block(s->fd);
         s->file = qemu_fopen_ops(s, &socket_write_ops);
     } else {
         s->file = qemu_fopen_ops(s, &socket_read_ops);
diff --git a/slirp/misc.c b/slirp/misc.c
index 6b9c2c405b6a4ff4bfc8565032f5b9c4f9484cdb..8ecced547f3cf2c002dfa7d2f4ac0943864d2ec2 100644
--- a/slirp/misc.c
+++ b/slirp/misc.c
@@ -215,7 +215,7 @@ fork_exec(struct socket *so, const char *ex, int do_pty)
                 qemu_setsockopt(so->s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(int));
                 opt = 1;
                 qemu_setsockopt(so->s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
-		socket_set_nonblock(so->s);
+		qemu_set_nonblock(so->s);
 
 		/* Append the telnet options now */
                 if (so->so_m != NULL && do_pty == 1)  {
diff --git a/slirp/tcp_subr.c b/slirp/tcp_subr.c
index 84a6bb560b6766f1ff26854971f1676c4fcbb68b..e98ce1a50c37c068d35272316078593cbb82732e 100644
--- a/slirp/tcp_subr.c
+++ b/slirp/tcp_subr.c
@@ -336,7 +336,7 @@ int tcp_fconnect(struct socket *so)
     int opt, s=so->s;
     struct sockaddr_in addr;
 
-    socket_set_nonblock(s);
+    qemu_set_nonblock(s);
     opt = 1;
     qemu_setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
     opt = 1;
@@ -425,7 +425,7 @@ void tcp_connect(struct socket *inso)
         tcp_close(sototcpcb(so)); /* This will sofree() as well */
         return;
     }
-    socket_set_nonblock(s);
+    qemu_set_nonblock(s);
     opt = 1;
     qemu_setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(int));
     opt = 1;
diff --git a/ui/vnc.c b/ui/vnc.c
index bbe1e0f179c46ac05a0567b34c80145969c911cf..5ddb6966259128431683dce29c7c988008600fcf 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -2732,7 +2732,7 @@ static void vnc_connect(VncDisplay *vd, int csock, int skipauth, bool websocket)
 
     VNC_DEBUG("New client on socket %d\n", csock);
     vd->dcl.idle = 0;
-    socket_set_nonblock(vs->csock);
+    qemu_set_nonblock(vs->csock);
 #ifdef CONFIG_VNC_WS
     if (websocket) {
         vs->websocket = 1;
diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 433dd6888bf73af6808045e75e734eaa64bfb555..4e4b8196beb6b9ad185a824164c2a7df8fbce756 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -134,14 +134,14 @@ void qemu_vfree(void *ptr)
     free(ptr);
 }
 
-void socket_set_block(int fd)
+void qemu_set_block(int fd)
 {
     int f;
     f = fcntl(fd, F_GETFL);
     fcntl(fd, F_SETFL, f & ~O_NONBLOCK);
 }
 
-void socket_set_nonblock(int fd)
+void qemu_set_nonblock(int fd)
 {
     int f;
     f = fcntl(fd, F_GETFL);
diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index 640194c0cf7a7037702b8209edd706ec700262cd..dcfa0c2918ab303abd594ba20befa6f0b5dcb345 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -100,14 +100,14 @@ struct tm *localtime_r(const time_t *timep, struct tm *result)
     return p;
 }
 
-void socket_set_block(int fd)
+void qemu_set_block(int fd)
 {
     unsigned long opt = 0;
     WSAEventSelect(fd, NULL, 0);
     ioctlsocket(fd, FIONBIO, &opt);
 }
 
-void socket_set_nonblock(int fd)
+void qemu_set_nonblock(int fd)
 {
     unsigned long opt = 1;
     ioctlsocket(fd, FIONBIO, &opt);
diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c
index b6b78f503a4ff4ae14fd470dc9b47906c7d73942..94581aa236c4f5046d83f136460a29f8d1f5d102 100644
--- a/util/qemu-sockets.c
+++ b/util/qemu-sockets.c
@@ -277,7 +277,7 @@ static int inet_connect_addr(struct addrinfo *addr, bool *in_progress,
     }
     qemu_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
     if (connect_state != NULL) {
-        socket_set_nonblock(sock);
+        qemu_set_nonblock(sock);
     }
     /* connect to peer */
     do {
@@ -737,7 +737,7 @@ int unix_connect_opts(QemuOpts *opts, Error **errp,
         connect_state = g_malloc0(sizeof(*connect_state));
         connect_state->callback = callback;
         connect_state->opaque = opaque;
-        socket_set_nonblock(sock);
+        qemu_set_nonblock(sock);
     }
 
     memset(&un, 0, sizeof(un));
@@ -910,6 +910,7 @@ int socket_connect(SocketAddress *addr, Error **errp,
     case SOCKET_ADDRESS_KIND_FD:
         fd = monitor_get_fd(cur_mon, addr->fd->str, errp);
         if (callback) {
+            qemu_set_nonblock(fd);
             callback(fd, opaque);
         }
         break;