async_sock: Use unix errnos instead of NTSTATUS

This also switches wb_reqtrans to use wbcErr instead of NTSTATUS as it would
be pointless to convert to errno first and to wbcErr later.

11 files changed, 373 insertions, 211 deletions

diff --git a/lib/async_req/async_sock.c b/lib/async_req/async_sock.c
index b992320669..23ac93745e 100644
--- a/lib/async_req/async_sock.c
+++ b/lib/async_req/async_sock.c
@@ -95,6 +95,51 @@ struct async_syscall_state {
 };
 
 /**
+ * @brief Map async_req states to unix-style errnos
+ * @param[in]  req	The async req to get the state from
+ * @param[out] err	Pointer to take the unix-style errno
+ *
+ * @return true if the async_req is in an error state, false otherwise
+ */
+
+bool async_req_is_errno(struct async_req *req, int *err)
+{
+	enum async_req_state state;
+	uint64_t error;
+
+	if (!async_req_is_error(req, &state, &error)) {
+		return false;
+	}
+
+	switch (state) {
+	case ASYNC_REQ_USER_ERROR:
+		*err = (int)error;
+		break;
+	case ASYNC_REQ_TIMED_OUT:
+		*err = ETIME;
+		break;
+	case ASYNC_REQ_NO_MEMORY:
+		*err = ENOMEM;
+		break;
+	default:
+		*err = EIO;
+		break;
+	}
+	return true;
+}
+
+int async_req_simple_recv_errno(struct async_req *req)
+{
+	int err;
+
+	if (async_req_is_errno(req, &err)) {
+		return err;
+	}
+
+	return 0;
+}
+
+/**
  * @brief Create a new async syscall req
  * @param[in] mem_ctx	The memory context to hang the result off
  * @param[in] ev	The event context to work from
@@ -239,7 +284,7 @@ static void async_send_callback(struct tevent_context *ev,
 	struct param_send *p = &state->param.param_send;
 
 	if (state->syscall_type != ASYNC_SYSCALL_SEND) {
-		async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		async_req_error(req, EIO);
 		return;
 	}
 
@@ -306,7 +351,7 @@ static void async_sendall_callback(struct tevent_context *ev,
 	struct param_sendall *p = &state->param.param_sendall;
 
 	if (state->syscall_type != ASYNC_SYSCALL_SENDALL) {
-		async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		async_req_error(req, EIO);
 		return;
 	}
 
@@ -316,18 +361,18 @@ static void async_sendall_callback(struct tevent_context *ev,
 	state->sys_errno = errno;
 
 	if (state->result.result_ssize_t == -1) {
-		async_req_nterror(req, map_nt_error_from_unix(state->sys_errno));
+		async_req_error(req, state->sys_errno);
 		return;
 	}
 
 	if (state->result.result_ssize_t == 0) {
-		async_req_nterror(req, NT_STATUS_END_OF_FILE);
+		async_req_error(req, EOF);
 		return;
 	}
 
 	p->sent += state->result.result_ssize_t;
 	if (p->sent > p->length) {
-		async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		async_req_error(req, EIO);
 		return;
 	}
 
@@ -374,9 +419,20 @@ struct async_req *sendall_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
 	return result;
 }
 
-NTSTATUS sendall_recv(struct async_req *req)
+ssize_t sendall_recv(struct async_req *req, int *perr)
 {
-	return async_req_simple_recv_ntstatus(req);
+	struct async_syscall_state *state = talloc_get_type_abort(
+		req->private_data, struct async_syscall_state);
+	int err;
+
+	err = async_req_simple_recv_errno(req);
+
+	if (err != 0) {
+		*perr = err;
+		return -1;
+	}
+
+	return state->result.result_ssize_t;
 }
 
 /**
@@ -398,7 +454,7 @@ static void async_recv_callback(struct tevent_context *ev,
 	struct param_recv *p = &state->param.param_recv;
 
 	if (state->syscall_type != ASYNC_SYSCALL_RECV) {
-		async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		async_req_error(req, EIO);
 		return;
 	}
 
@@ -466,7 +522,7 @@ static void async_recvall_callback(struct tevent_context *ev,
 	struct param_recvall *p = &state->param.param_recvall;
 
 	if (state->syscall_type != ASYNC_SYSCALL_RECVALL) {
-		async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		async_req_error(req, EIO);
 		return;
 	}
 
@@ -476,18 +532,18 @@ static void async_recvall_callback(struct tevent_context *ev,
 	state->sys_errno = errno;
 
 	if (state->result.result_ssize_t == -1) {
-		async_req_nterror(req, map_nt_error_from_unix(state->sys_errno));
+		async_req_error(req, state->sys_errno);
 		return;
 	}
 
 	if (state->result.result_ssize_t == 0) {
-		async_req_nterror(req, NT_STATUS_END_OF_FILE);
+		async_req_error(req, EIO);
 		return;
 	}
 
 	p->received += state->result.result_ssize_t;
 	if (p->received > p->length) {
-		async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		async_req_error(req, EIO);
 		return;
 	}
 
@@ -533,9 +589,20 @@ struct async_req *recvall_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
 	return result;
 }
 
-NTSTATUS recvall_recv(struct async_req *req)
+ssize_t recvall_recv(struct async_req *req, int *perr)
 {
-	return async_req_simple_recv_ntstatus(req);
+	struct async_syscall_state *state = talloc_get_type_abort(
+		req->private_data, struct async_syscall_state);
+	int err;
+
+	err = async_req_simple_recv_errno(req);
+
+	if (err != 0) {
+		*perr = err;
+		return -1;
+	}
+
+	return state->result.result_ssize_t;
 }
 
 struct async_connect_state {
@@ -570,7 +637,6 @@ struct async_req *async_connect_send(TALLOC_CTX *mem_ctx,
 	struct async_req *result;
 	struct async_connect_state *state;
 	struct tevent_fd *fde;
-	NTSTATUS status;
 
 	if (!async_req_setup(mem_ctx, &result, &state,
 			     struct async_connect_state)) {
@@ -595,7 +661,6 @@ struct async_req *async_connect_send(TALLOC_CTX *mem_ctx,
 	state->result = connect(fd, address, address_len);
 	if (state->result == 0) {
 		state->sys_errno = 0;
-		status = NT_STATUS_OK;
 		goto post_status;
 	}
 
@@ -617,17 +682,16 @@ struct async_req *async_connect_send(TALLOC_CTX *mem_ctx,
 	fde = tevent_add_fd(ev, state, fd, TEVENT_FD_READ | TEVENT_FD_WRITE,
 			   async_connect_connected, result);
 	if (fde == NULL) {
-		status = NT_STATUS_NO_MEMORY;
+		state->sys_errno = ENOMEM;
 		goto post_status;
 	}
 	return result;
 
  post_errno:
 	state->sys_errno = errno;
-	status = map_nt_error_from_unix(state->sys_errno);
  post_status:
 	fcntl(fd, F_SETFL, state->old_sockflags);
-	if (!async_post_ntstatus(result, ev, status)) {
+	if (!async_post_error(result, ev, state->sys_errno)) {
 		goto fail;
 	}
 	return result;
@@ -675,7 +739,7 @@ static void async_connect_connected(struct tevent_context *ev,
 		DEBUG(10, ("connect returned %s\n", strerror(errno)));
 
 		fcntl(state->fd, F_SETFL, state->old_sockflags);
-		async_req_nterror(req, map_nt_error_from_unix(state->sys_errno));
+		async_req_error(req, state->sys_errno);
 		return;
 	}
 
@@ -683,21 +747,23 @@ static void async_connect_connected(struct tevent_context *ev,
 	async_req_done(req);
 }
 
-NTSTATUS async_connect_recv(struct async_req *req, int *perrno)
+int async_connect_recv(struct async_req *req, int *perrno)
 {
 	struct async_connect_state *state = talloc_get_type_abort(
 		req->private_data, struct async_connect_state);
-	NTSTATUS status;
+	int err;
 
 	fcntl(state->fd, F_SETFL, state->old_sockflags);
 
-	*perrno = state->sys_errno;
 
-	if (async_req_is_nterror(req, &status)) {
-		return status;
+	if (async_req_is_errno(req, &err)) {
+		*perrno = err;
+		return -1;
 	}
 	if (state->sys_errno == 0) {
-		return NT_STATUS_OK;
+		return 0;
 	}
-	return map_nt_error_from_unix(state->sys_errno);
+
+	*perrno = state->sys_errno;
+	return -1;
 }
diff --git a/lib/async_req/async_sock.h b/lib/async_req/async_sock.h
index fd41acacbb..c8739e9ed6 100644
--- a/lib/async_req/async_sock.h
+++ b/lib/async_req/async_sock.h
@@ -22,6 +22,9 @@
 
 #include "includes.h"
 
+bool async_req_is_errno(struct async_req *req, int *err);
+int async_req_simple_recv_errno(struct async_req *req);
+
 ssize_t async_syscall_result_ssize_t(struct async_req *req, int *perrno);
 size_t async_syscall_result_size_t(struct async_req *req, int *perrno);
 int async_syscall_result_int(struct async_req *req, int *perrno);
@@ -36,16 +39,16 @@ struct async_req *async_connect_send(TALLOC_CTX *mem_ctx,
 				     struct tevent_context *ev,
 				     int fd, const struct sockaddr *address,
 				     socklen_t address_len);
-NTSTATUS async_connect_recv(struct async_req *req, int *perrno);
+int async_connect_recv(struct async_req *req, int *perrno);
 
 struct async_req *sendall_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
 			       int fd, const void *buffer, size_t length,
 			       int flags);
-NTSTATUS sendall_recv(struct async_req *req);
+ssize_t sendall_recv(struct async_req *req, int *perr);
 
 struct async_req *recvall_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
 			       int fd, void *buffer, size_t length,
 			       int flags);
-NTSTATUS recvall_recv(struct async_req *req);
+ssize_t recvall_recv(struct async_req *req, int *perr);
 
 #endif
diff --git a/source3/Makefile.in b/source3/Makefile.in
index b67cbabfbc..ee75eb30e6 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -944,6 +944,7 @@ SMBTORTURE_OBJ1 = torture/torture.o torture/nbio.o torture/scanner.o torture/uta
 SMBTORTURE_OBJ = $(SMBTORTURE_OBJ1) $(PARAM_OBJ) \
 	$(LIBSMB_OBJ) $(KRBCLIENT_OBJ) $(LIB_NONSMBD_OBJ) \
 	lib/wb_reqtrans.o lib/wbclient.o \
+	@LIBWBCLIENT_STATIC@ \
 	$(LIBNDR_GEN_OBJ0)
 
 MASKTEST_OBJ = torture/masktest.o $(PARAM_OBJ) $(LIBSMB_OBJ) $(KRBCLIENT_OBJ) \
@@ -1467,11 +1468,11 @@ bin/nmblookup@EXEEXT@: $(BINARY_PREREQS) $(NMBLOOKUP_OBJ) @BUILD_POPT@ @LIBTALLO
 	@$(CC) -o $@ $(NMBLOOKUP_OBJ) $(LDFLAGS) $(DYNEXP) $(LIBS) \
 		$(POPT_LIBS) $(LDAP_LIBS) $(LIBTALLOC_LIBS) $(LIBTDB_LIBS)
 
-bin/smbtorture@EXEEXT@: $(BINARY_PREREQS) $(SMBTORTURE_OBJ) @BUILD_POPT@ @LIBTALLOC_SHARED@ @LIBTDB_SHARED@
+bin/smbtorture@EXEEXT@: $(BINARY_PREREQS) $(SMBTORTURE_OBJ) @BUILD_POPT@ @LIBTALLOC_SHARED@ @LIBTDB_SHARED@ @LIBWBCLIENT_SHARED@
 	@echo Linking $@
 	@$(CC) -o $@ $(SMBTORTURE_OBJ) $(LDFLAGS) $(DYNEXP) \
 		$(LIBS) $(KRB5LIBS) $(LDAP_LIBS) $(POPT_LIBS) $(LIBTALLOC_LIBS) \
-		$(LIBTDB_LIBS) $(ZLIB_LIBS)
+		$(LIBTDB_LIBS) $(ZLIB_LIBS) $(WINBIND_LIBS)
 
 bin/talloctort@EXEEXT@: $(BINARY_PREREQS) $(TALLOCTORT_OBJ) @BUILD_POPT@ @LIBTALLOC_SHARED@ @LIBTDB_SHARED@
 	@echo Linking $@
diff --git a/source3/include/proto.h b/source3/include/proto.h
index f07e31c29c..69887883af 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -7563,12 +7563,4 @@ NTSTATUS nss_info_template_init( void );
 
 /* Misc protos */
 
-struct async_req *wb_trans_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
-				struct wb_context *wb_ctx, bool need_priv,
-				const struct winbindd_request *wb_req);
-NTSTATUS wb_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
-		       struct winbindd_response **presponse);
-struct wb_context *wb_context_init(TALLOC_CTX *mem_ctx);
-
-
 #endif /*  _PROTO_H_  */
diff --git a/source3/include/wbc_async.h b/source3/include/wbc_async.h
new file mode 100644
index 0000000000..7a8768029a
--- /dev/null
+++ b/source3/include/wbc_async.h
@@ -0,0 +1,68 @@
+/*
+   Unix SMB/CIFS implementation.
+   Headers for the async winbind client library
+   Copyright (C) Kai Blin 2009
+
+   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 3 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/>.
+*/
+
+#ifndef _WBC_ASYNC_H_
+#define _WBC_ASYNC_H_
+
+#include "nsswitch/libwbclient/wbclient.h"
+
+struct wb_context {
+	struct async_req_queue *queue;
+	int fd;
+	bool is_priv;
+};
+
+struct async_req *wb_trans_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
+				struct wb_context *wb_ctx, bool need_priv,
+				const struct winbindd_request *wb_req);
+wbcErr wb_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+		     struct winbindd_response **presponse);
+struct wb_context *wb_context_init(TALLOC_CTX *mem_ctx);
+
+/* Definitions from wb_reqtrans.c */
+bool async_req_is_wbcerr(struct async_req *req, wbcErr *pwbc_err);
+wbcErr map_wbc_err_from_errno(int error);
+wbcErr async_req_simple_recv_wbcerr(struct async_req *req);
+
+struct async_req *wb_req_read_send(TALLOC_CTX *mem_ctx,
+				   struct tevent_context *ev,
+				   int fd, size_t max_extra_data);
+
+wbcErr wb_req_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+			struct winbindd_request **preq);
+
+struct async_req *wb_req_write_send(TALLOC_CTX *mem_ctx,
+				    struct tevent_context *ev, int fd,
+				    struct winbindd_request *wb_req);
+
+wbcErr wb_req_write_recv(struct async_req *req);
+
+struct async_req *wb_resp_read_send(TALLOC_CTX *mem_ctx,
+				    struct tevent_context *ev, int fd);
+
+wbcErr wb_resp_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+			 struct winbindd_response **presp);
+
+struct async_req *wb_resp_write_send(TALLOC_CTX *mem_ctx,
+				    struct tevent_context *ev, int fd,
+				    struct winbindd_response *wb_resp);
+
+wbcErr wb_resp_write_recv(struct async_req *req);
+
+#endif /*_WBC_ASYNC_H_*/
diff --git a/source3/lib/util_sock.c b/source3/lib/util_sock.c
index 78431d93c8..b9a7f8788d 100644
--- a/source3/lib/util_sock.c
+++ b/source3/lib/util_sock.c
@@ -1051,17 +1051,17 @@ static void open_socket_out_connected(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct open_socket_out_state *state = talloc_get_type_abort(
 		req->private_data, struct open_socket_out_state);
-	NTSTATUS status;
+	int err;
 	int sys_errno;
 
-	status = async_connect_recv(subreq, &sys_errno);
+	err = async_connect_recv(subreq, &sys_errno);
 	TALLOC_FREE(subreq);
-	if (NT_STATUS_IS_OK(status)) {
+	if (err == 0) {
 		async_req_done(req);
 		return;
 	}
 
-	if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)
+	if ((sys_errno == ETIME)
 	    || (sys_errno == EINPROGRESS)
 	    || (sys_errno == EALREADY)
 	    || (sys_errno == EAGAIN)) {
@@ -1082,7 +1082,7 @@ static void open_socket_out_connected(struct async_req *subreq)
 		}
 		if (!async_req_set_timeout(subreq, state->ev,
 					   timeval_set(0, state->wait_nsec))) {
-			async_req_nterror(req, NT_STATUS_NO_MEMORY);
+			async_req_error(req, ENOMEM);
 			return;
 		}
 		subreq->async.fn = open_socket_out_connected;
@@ -1098,17 +1098,17 @@ static void open_socket_out_connected(struct async_req *subreq)
 #endif
 
 	/* real error */
-	async_req_nterror(req, map_nt_error_from_unix(sys_errno));
+	async_req_error(req, sys_errno);
 }
 
 NTSTATUS open_socket_out_recv(struct async_req *req, int *pfd)
 {
 	struct open_socket_out_state *state = talloc_get_type_abort(
 		req->private_data, struct open_socket_out_state);
-	NTSTATUS status;
+	int err;
 
-	if (async_req_is_nterror(req, &status)) {
-		return status;
+	if (async_req_is_errno(req, &err)) {
+		return map_nt_error_from_unix(err);
 	}
 	*pfd = state->fd;
 	state->fd = -1;
diff --git a/source3/lib/wb_reqtrans.c b/source3/lib/wb_reqtrans.c
index b56c0fd4d3..9bf6f29105 100644
--- a/source3/lib/wb_reqtrans.c
+++ b/source3/lib/wb_reqtrans.c
@@ -20,7 +20,7 @@
 */
 
 #include "includes.h"
-#include "winbindd/winbindd.h"
+#include "wbc_async.h"
 
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_WINBIND
@@ -32,6 +32,57 @@ struct req_read_state {
 	int fd;
 };
 
+bool async_req_is_wbcerr(struct async_req *req, wbcErr *pwbc_err)
+{
+	enum async_req_state state;
+	uint64_t error;
+	if (!async_req_is_error(req, &state, &error)) {
+		*pwbc_err = WBC_ERR_SUCCESS;
+		return false;
+	}
+
+	switch (state) {
+	case ASYNC_REQ_USER_ERROR:
+		*pwbc_err = error;
+		break;
+	case ASYNC_REQ_TIMED_OUT:
+		*pwbc_err = WBC_ERR_UNKNOWN_FAILURE;
+		break;
+	case ASYNC_REQ_NO_MEMORY:
+		*pwbc_err = WBC_ERR_NO_MEMORY;
+		break;
+	default:
+		*pwbc_err = WBC_ERR_UNKNOWN_FAILURE;
+		break;
+	}
+	return true;
+}
+
+wbcErr map_wbc_err_from_errno(int error)
+{
+	switch(error) {
+	case EPERM:
+	case EACCES:
+		return WBC_ERR_AUTH_ERROR;
+	case ENOMEM:
+		return WBC_ERR_NO_MEMORY;
+	case EIO:
+	default:
+		return WBC_ERR_UNKNOWN_FAILURE;
+	}
+}
+
+wbcErr async_req_simple_recv_wbcerr(struct async_req *req)
+{
+	wbcErr wbc_err;
+
+	if (async_req_is_wbcerr(req, &wbc_err)) {
+		return wbc_err;
+	}
+
+	return WBC_ERR_SUCCESS;
+}
+
 static void wb_req_read_len(struct async_req *subreq);
 static void wb_req_read_main(struct async_req *subreq);
 static void wb_req_read_extra(struct async_req *subreq);
@@ -76,12 +127,13 @@ static void wb_req_read_len(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct req_read_state *state = talloc_get_type_abort(
 		req->private_data, struct req_read_state);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = recvall_recv(subreq);
+	ret = recvall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
@@ -89,7 +141,7 @@ static void wb_req_read_len(struct async_req *subreq)
 		DEBUG(0, ("wb_req_read_len: Invalid request size received: "
 			  "%d (expected %d)\n", (int)state->wb_req->length,
 			  (int)sizeof(struct winbindd_request)));
-		async_req_nterror(req, NT_STATUS_INVALID_BUFFER_SIZE);
+		async_req_error(req, WBC_ERR_INVALID_RESPONSE);
 		return;
 	}
 
@@ -110,12 +162,13 @@ static void wb_req_read_main(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct req_read_state *state = talloc_get_type_abort(
 		req->private_data, struct req_read_state);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = recvall_recv(subreq);
+	ret = recvall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
@@ -124,7 +177,7 @@ static void wb_req_read_main(struct async_req *subreq)
 		DEBUG(3, ("Got request with %d bytes extra data on "
 			  "unprivileged socket\n",
 			  (int)state->wb_req->extra_len));
-		async_req_nterror(req, NT_STATUS_INVALID_BUFFER_SIZE);
+		async_req_error(req, WBC_ERR_INVALID_RESPONSE);
 		return;
 	}
 
@@ -156,30 +209,31 @@ static void wb_req_read_extra(struct async_req *subreq)
 {
 	struct async_req *req = talloc_get_type_abort(
 		subreq->async.priv, struct async_req);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = recvall_recv(subreq);
+	ret = recvall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 	async_req_done(req);
 }
 
 
-NTSTATUS wb_req_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
-			  struct winbindd_request **preq)
+wbcErr wb_req_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+			struct winbindd_request **preq)
 {
 	struct req_read_state *state = talloc_get_type_abort(
 		req->private_data, struct req_read_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	if (async_req_is_nterror(req, &status)) {
-		return status;
+	if (async_req_is_wbcerr(req, &wbc_err)) {
+		return wbc_err;
 	}
 	*preq = talloc_move(mem_ctx, &state->wb_req);
-	return NT_STATUS_OK;
+	return WBC_ERR_SUCCESS;
 }
 
 struct req_write_state {
@@ -227,12 +281,13 @@ static void wb_req_write_main(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct req_write_state *state = talloc_get_type_abort(
 		req->private_data, struct req_write_state);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = sendall_recv(subreq);
+	ret = sendall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
@@ -256,21 +311,22 @@ static void wb_req_write_extra(struct async_req *subreq)
 {
 	struct async_req *req = talloc_get_type_abort(
 		subreq->async.priv, struct async_req);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = sendall_recv(subreq);
+	ret = sendall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
 	async_req_done(req);
 }
 
-NTSTATUS wb_req_write_recv(struct async_req *req)
+wbcErr wb_req_write_recv(struct async_req *req)
 {
-	return async_req_simple_recv_ntstatus(req);
+	return async_req_simple_recv_wbcerr(req);
 }
 
 struct resp_read_state {
@@ -322,12 +378,13 @@ static void wb_resp_read_len(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct resp_read_state *state = talloc_get_type_abort(
 		req->private_data, struct resp_read_state);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = recvall_recv(subreq);
+	ret = recvall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
@@ -336,7 +393,7 @@ static void wb_resp_read_len(struct async_req *subreq)
 			  "%d (expected at least%d)\n",
 			  (int)state->wb_resp->length,
 			  (int)sizeof(struct winbindd_response)));
-		async_req_nterror(req, NT_STATUS_INVALID_BUFFER_SIZE);
+		async_req_error(req, WBC_ERR_INVALID_RESPONSE);
 		return;
 	}
 
@@ -357,13 +414,14 @@ static void wb_resp_read_main(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct resp_read_state *state = talloc_get_type_abort(
 		req->private_data, struct resp_read_state);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 	size_t extra_len;
 
-	status = recvall_recv(subreq);
+	ret = recvall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
@@ -395,30 +453,31 @@ static void wb_resp_read_extra(struct async_req *subreq)
 {
 	struct async_req *req = talloc_get_type_abort(
 		subreq->async.priv, struct async_req);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = recvall_recv(subreq);
+	ret = recvall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 	async_req_done(req);
 }
 
 
-NTSTATUS wb_resp_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
-			   struct winbindd_response **presp)
+wbcErr wb_resp_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+			 struct winbindd_response **presp)
 {
 	struct resp_read_state *state = talloc_get_type_abort(
 		req->private_data, struct resp_read_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	if (async_req_is_nterror(req, &status)) {
-		return status;
+	if (async_req_is_wbcerr(req, &wbc_err)) {
+		return wbc_err;
 	}
 	*presp = talloc_move(mem_ctx, &state->wb_resp);
-	return NT_STATUS_OK;
+	return WBC_ERR_SUCCESS;
 }
 
 struct resp_write_state {
@@ -466,12 +525,13 @@ static void wb_resp_write_main(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct resp_write_state *state = talloc_get_type_abort(
 		req->private_data, struct resp_write_state);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = sendall_recv(subreq);
+	ret = sendall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (ret < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
@@ -496,19 +556,20 @@ static void wb_resp_write_extra(struct async_req *subreq)
 {
 	struct async_req *req = talloc_get_type_abort(
 		subreq->async.priv, struct async_req);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = sendall_recv(subreq);
+	ret = sendall_recv(subreq, &err);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (err < 0) {
+		async_req_error(req, map_wbc_err_from_errno(err));
 		return;
 	}
 
 	async_req_done(req);
 }
 
-NTSTATUS wb_resp_write_recv(struct async_req *req)
+wbcErr wb_resp_write_recv(struct async_req *req)
 {
-	return async_req_simple_recv_ntstatus(req);
+	return async_req_simple_recv_wbcerr(req);
 }
diff --git a/source3/lib/wbclient.c b/source3/lib/wbclient.c
index ae9a034cc8..4d3a609530 100644
--- a/source3/lib/wbclient.c
+++ b/source3/lib/wbclient.c
@@ -18,8 +18,7 @@
 */
 
 #include "includes.h"
-#include "winbindd/winbindd.h"
-#include "winbindd/winbindd_proto.h"
+#include "wbc_async.h"
 
 static int make_nonstd_fd(int fd)
 {
@@ -131,12 +130,6 @@ static bool winbind_closed_fd(int fd)
 	return false;
 }
 
-struct wb_context {
-	struct async_req_queue *queue;
-	int fd;
-	bool is_priv;
-};
-
 struct wb_context *wb_context_init(TALLOC_CTX *mem_ctx)
 {
 	struct wb_context *result;
@@ -163,7 +156,7 @@ static struct async_req *wb_connect_send(TALLOC_CTX *mem_ctx,
 	struct sockaddr_un sunaddr;
 	struct stat st;
 	char *path = NULL;
-	NTSTATUS status;
+	wbcErr wbc_err;
 
 	if (wb_ctx->fd != -1) {
 		close(wb_ctx->fd);
@@ -173,13 +166,13 @@ static struct async_req *wb_connect_send(TALLOC_CTX *mem_ctx,
 	/* Check permissions on unix socket directory */
 
 	if (lstat(dir, &st) == -1) {
-		status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		wbc_err = WBC_ERR_WINBIND_NOT_AVAILABLE;
 		goto post_status;
 	}
 
 	if (!S_ISDIR(st.st_mode) ||
 	    (st.st_uid != 0 && st.st_uid != geteuid())) {
-		status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		wbc_err = WBC_ERR_WINBIND_NOT_AVAILABLE;
 		goto post_status;
 	}
 
@@ -202,13 +195,13 @@ static struct async_req *wb_connect_send(TALLOC_CTX *mem_ctx,
 	if ((lstat(sunaddr.sun_path, &st) == -1)
 	    || !S_ISSOCK(st.st_mode)
 	    || (st.st_uid != 0 && st.st_uid != geteuid())) {
-		status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
+		wbc_err = WBC_ERR_WINBIND_NOT_AVAILABLE;
 		goto post_status;
 	}
 
 	wb_ctx->fd = make_safe_fd(socket(AF_UNIX, SOCK_STREAM, 0));
 	if (wb_ctx->fd == -1) {
-		status = map_nt_error_from_unix(errno);
+		wbc_err = map_wbc_err_from_errno(errno);
 		goto post_status;
 	}
 
@@ -226,24 +219,22 @@ static struct async_req *wb_connect_send(TALLOC_CTX *mem_ctx,
 	return req;
 
  nomem:
-	status = NT_STATUS_NO_MEMORY;
+	wbc_err = WBC_ERR_NO_MEMORY;
  post_status:
 	req = async_req_new(mem_ctx);
 	if (req == NULL) {
 		return NULL;
 	}
-	if (async_post_ntstatus(req, ev, status)) {
+	if (async_post_error(req, ev, wbc_err)) {
 		return req;
 	}
 	TALLOC_FREE(req);
 	return NULL;
 }
 
-static NTSTATUS wb_connect_recv(struct async_req *req)
+static wbcErr wb_connect_recv(struct async_req *req)
 {
-	int dummy;
-
-	return async_connect_recv(req, &dummy);
+	return async_req_simple_recv_wbcerr(req);
 }
 
 static struct winbindd_request *winbindd_request_copy(
@@ -295,8 +286,8 @@ static struct async_req *wb_int_trans_send(TALLOC_CTX *mem_ctx,
 	}
 
 	if (winbind_closed_fd(fd)) {
-		if (!async_post_ntstatus(result, ev,
-					 NT_STATUS_PIPE_DISCONNECTED)) {
+		if (!async_post_error(result, ev,
+				      WBC_ERR_WINBIND_NOT_AVAILABLE)) {
 			goto fail;
 		}
 		return result;
@@ -329,18 +320,18 @@ static void wb_int_trans_write_done(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct wb_int_trans_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_int_trans_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_req_write_recv(subreq);
+	wbc_err = wb_req_write_recv(subreq);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (!WBC_ERROR_IS_OK(wbc_err)) {
+		async_req_error(req, wbc_err);
 		return;
 	}
 
 	subreq = wb_resp_read_send(state, state->ev, state->fd);
 	if (subreq == NULL) {
-		async_req_nterror(req, NT_STATUS_NO_MEMORY);
+		async_req_error(req, WBC_ERR_NO_MEMORY);
 	}
 	subreq->async.fn = wb_int_trans_read_done;
 	subreq->async.priv = req;
@@ -352,32 +343,32 @@ static void wb_int_trans_read_done(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct wb_int_trans_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_int_trans_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_resp_read_recv(subreq, state, &state->wb_resp);
+	wbc_err = wb_resp_read_recv(subreq, state, &state->wb_resp);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (!WBC_ERROR_IS_OK(wbc_err)) {
+		async_req_error(req, wbc_err);
 		return;
 	}
 
 	async_req_done(req);
 }
 
-static NTSTATUS wb_int_trans_recv(struct async_req *req,
-				  TALLOC_CTX *mem_ctx,
-				  struct winbindd_response **presponse)
+static wbcErr wb_int_trans_recv(struct async_req *req,
+				TALLOC_CTX *mem_ctx,
+				struct winbindd_response **presponse)
 {
 	struct wb_int_trans_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_int_trans_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	if (async_req_is_nterror(req, &status)) {
-		return status;
+	if (async_req_is_wbcerr(req, &wbc_err)) {
+		return wbc_err;
 	}
 
 	*presponse = talloc_move(mem_ctx, &state->wb_resp);
-	return NT_STATUS_OK;
+	return WBC_ERR_SUCCESS;
 }
 
 static const char *winbindd_socket_dir(void)
@@ -448,13 +439,13 @@ static void wb_open_pipe_connect_nonpriv_done(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct wb_open_pipe_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_open_pipe_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_connect_recv(subreq);
+	wbc_err = wb_connect_recv(subreq);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
+	if (!WBC_ERROR_IS_OK(wbc_err)) {
 		state->wb_ctx->is_priv = true;
-		async_req_nterror(req, status);
+		async_req_error(req, wbc_err);
 		return;
 	}
 
@@ -478,12 +469,12 @@ static void wb_open_pipe_ping_done(struct async_req *subreq)
 	struct wb_open_pipe_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_open_pipe_state);
 	struct winbindd_response *wb_resp;
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_int_trans_recv(subreq, state, &wb_resp);
+	wbc_err = wb_int_trans_recv(subreq, state, &wb_resp);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (!WBC_ERROR_IS_OK(wbc_err)) {
+		async_req_error(req, wbc_err);
 		return;
 	}
 
@@ -511,12 +502,12 @@ static void wb_open_pipe_getpriv_done(struct async_req *subreq)
 	struct wb_open_pipe_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_open_pipe_state);
 	struct winbindd_response *wb_resp = NULL;
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_int_trans_recv(subreq, state, &wb_resp);
+	wbc_err = wb_int_trans_recv(subreq, state, &wb_resp);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (!WBC_ERROR_IS_OK(wbc_err)) {
+		async_req_error(req, wbc_err);
 		return;
 	}
 
@@ -540,21 +531,21 @@ static void wb_open_pipe_connect_priv_done(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct wb_open_pipe_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_open_pipe_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_connect_recv(subreq);
+	wbc_err = wb_connect_recv(subreq);
 	TALLOC_FREE(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	if (!WBC_ERROR_IS_OK(wbc_err)) {
+		async_req_error(req, wbc_err);
 		return;
 	}
 	state->wb_ctx->is_priv = true;
 	async_req_done(req);
 }
 
-static NTSTATUS wb_open_pipe_recv(struct async_req *req)
+static wbcErr wb_open_pipe_recv(struct async_req *req)
 {
-	return async_req_simple_recv_ntstatus(req);
+	return async_req_simple_recv_wbcerr(req);
 }
 
 struct wb_trans_state {
@@ -631,27 +622,26 @@ struct async_req *wb_trans_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev,
 
 static bool wb_trans_retry(struct async_req *req,
 			   struct wb_trans_state *state,
-			   NTSTATUS status)
+			   wbcErr wbc_err)
 {
 	struct async_req *subreq;
 
-	if (NT_STATUS_IS_OK(status)) {
+	if (WBC_ERROR_IS_OK(wbc_err)) {
 		return false;
 	}
 
-	if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)
-	    || NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
+	if (wbc_err == WBC_ERR_WINBIND_NOT_AVAILABLE) {
 		/*
 		 * Winbind not around or we can't connect to the pipe. Fail
 		 * immediately.
 		 */
-		async_req_nterror(req, status);
+		async_req_error(req, wbc_err);
 		return true;
 	}
 
 	state->num_retries -= 1;
 	if (state->num_retries == 0) {
-		async_req_nterror(req, status);
+		async_req_error(req, wbc_err);
 		return true;
 	}
 
@@ -685,7 +675,7 @@ static void wb_trans_retry_wait_done(struct async_req *subreq)
 	ret = async_wait_recv(subreq);
 	TALLOC_FREE(subreq);
 	if (ret) {
-		async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		async_req_error(req, WBC_ERR_UNKNOWN_FAILURE);
 		return;
 	}
 
@@ -704,12 +694,12 @@ static void wb_trans_connect_done(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct wb_trans_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_trans_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_open_pipe_recv(subreq);
+	wbc_err = wb_open_pipe_recv(subreq);
 	TALLOC_FREE(subreq);
 
-	if (wb_trans_retry(req, state, status)) {
+	if (wb_trans_retry(req, state, wbc_err)) {
 		return;
 	}
 
@@ -729,29 +719,29 @@ static void wb_trans_done(struct async_req *subreq)
 		subreq->async.priv, struct async_req);
 	struct wb_trans_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_trans_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	status = wb_int_trans_recv(subreq, state, &state->wb_resp);
+	wbc_err = wb_int_trans_recv(subreq, state, &state->wb_resp);
 	TALLOC_FREE(subreq);
 
-	if (wb_trans_retry(req, state, status)) {
+	if (wb_trans_retry(req, state, wbc_err)) {
 		return;
 	}
 
 	async_req_done(req);
 }
 
-NTSTATUS wb_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
-		       struct winbindd_response **presponse)
+wbcErr wb_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+		     struct winbindd_response **presponse)
 {
 	struct wb_trans_state *state = talloc_get_type_abort(
 		req->private_data, struct wb_trans_state);
-	NTSTATUS status;
+	wbcErr wbc_err;
 
-	if (async_req_is_nterror(req, &status)) {
-		return status;
+	if (async_req_is_wbcerr(req, &wbc_err)) {
+		return wbc_err;
 	}
 
 	*presponse = talloc_move(mem_ctx, &state->wb_resp);
-	return NT_STATUS_OK;
+	return WBC_ERR_SUCCESS;
 }
diff --git a/source3/rpc_server/srv_pipe_hnd.c b/source3/rpc_server/srv_pipe_hnd.c
index 04369d1dd2..6dfe7a0911 100644
--- a/source3/rpc_server/srv_pipe_hnd.c
+++ b/source3/rpc_server/srv_pipe_hnd.c
@@ -1220,11 +1220,12 @@ static void np_write_done(struct async_req *subreq)
 {
 	struct async_req *req = talloc_get_type_abort(
 		subreq->async.priv, struct async_req);
-	NTSTATUS status;
+	int err;
+	ssize_t ret;
 
-	status = sendall_recv(subreq);
-	if (!NT_STATUS_IS_OK(status)) {
-		async_req_nterror(req, status);
+	ret = sendall_recv(subreq, &err);
+	if (ret < 0) {
+		async_req_nterror(req, map_nt_error_from_unix(err));
 		return;
 	}
 	async_req_done(req);
diff --git a/source3/torture/torture.c b/source3/torture/torture.c
index 1210a36a39..9cf41d88c7 100644
--- a/source3/torture/torture.c
+++ b/source3/torture/torture.c
@@ -18,6 +18,7 @@
 */
 
 #include "includes.h"
+#include "wbc_async.h"
 
 extern char *optarg;
 extern int optind;
@@ -5497,14 +5498,14 @@ static bool run_local_memcache(int dummy)
 
 static void wbclient_done(struct async_req *req)
 {
-	NTSTATUS status;
+	wbcErr wbc_err;
 	struct winbindd_response *wb_resp;
 	int *i = (int *)req->async.priv;
 
-	status = wb_trans_recv(req, req, &wb_resp);
+	wbc_err = wb_trans_recv(req, req, &wb_resp);
 	TALLOC_FREE(req);
 	*i += 1;
-	d_printf("wb_trans_recv %d returned %s\n", *i, nt_errstr(status));
+	d_printf("wb_trans_recv %d returned %s\n", *i, wbcErrorString(wbc_err));
 }
 
 static bool run_local_wbclient(int dummy)
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index 977ee9c6b1..c302dd1d62 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -67,27 +67,6 @@ bool winbindd_setup_sig_term_handler(bool parent);
 bool winbindd_setup_sig_hup_handler(const char *lfile);
 int main(int argc, char **argv, char **envp);
 
-/* The following definitions come from winbindd/winbindd_reqtrans.c  */
-
-struct async_req *wb_req_read_send(TALLOC_CTX *mem_ctx,
-				   struct event_context *ev,
-				   int fd, size_t max_extra_data);
-NTSTATUS wb_req_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
-			  struct winbindd_request **preq);
-struct async_req *wb_req_write_send(TALLOC_CTX *mem_ctx,
-				    struct event_context *ev, int fd,
-				    struct winbindd_request *wb_req);
-NTSTATUS wb_req_write_recv(struct async_req *req);
-
-struct async_req *wb_resp_read_send(TALLOC_CTX *mem_ctx,
-				    struct event_context *ev, int fd);
-NTSTATUS wb_resp_read_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
-			   struct winbindd_response **presp);
-struct async_req *wb_resp_write_send(TALLOC_CTX *mem_ctx,
-				     struct event_context *ev, int fd,
-				     struct winbindd_response *wb_resp);
-NTSTATUS wb_resp_write_recv(struct async_req *req);
-
 /* The following definitions come from winbindd/winbindd_ads.c  */