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Diffstat (limited to 'lib/tsocket/tsocket_readv.c')
-rw-r--r--lib/tsocket/tsocket_readv.c222
1 files changed, 0 insertions, 222 deletions
diff --git a/lib/tsocket/tsocket_readv.c b/lib/tsocket/tsocket_readv.c
deleted file mode 100644
index 2c8483ec7e..0000000000
--- a/lib/tsocket/tsocket_readv.c
+++ /dev/null
@@ -1,222 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
-
- Copyright (C) Stefan Metzmacher 2009
-
- ** NOTE! The following LGPL license applies to the tevent
- ** library. This does NOT imply that all of Samba is released
- ** under the LGPL
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 3 of the License, or (at your option) any later version.
-
- This library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "replace.h"
-#include "system/network.h"
-#include "tsocket.h"
-#include "tsocket_internal.h"
-
-struct tsocket_readv_state {
- /* this structs are owned by the caller */
- struct {
- struct tsocket_context *sock;
- tsocket_readv_next_iovec_t next_iovec_fn;
- void *private_data;
- } caller;
-
- /*
- * Each call to the callback resets iov and count
- * the callback allocated the iov as child of our state,
- * that means we are allowed to modify and free it.
- *
- * we should call the callback every time we filled the given
- * vector and ask for a new vector. We return if the callback
- * ask for 0 bytes.
- */
- struct iovec *iov;
- size_t count;
-
- /*
- * the total number of bytes we read,
- * the return value of the _recv function
- */
- int total_read;
-};
-
-static int tsocket_readv_state_destructor(struct tsocket_readv_state *state)
-{
- if (state->caller.sock) {
- tsocket_set_readable_handler(state->caller.sock, NULL, NULL);
- }
- ZERO_STRUCT(state->caller);
-
- return 0;
-}
-
-static bool tsocket_readv_ask_for_next_vector(struct tevent_req *req,
- struct tsocket_readv_state *state)
-{
- int ret;
- int err;
- bool dummy;
- size_t to_read = 0;
- size_t i;
-
- talloc_free(state->iov);
- state->iov = NULL;
- state->count = 0;
-
- ret = state->caller.next_iovec_fn(state->caller.sock,
- state->caller.private_data,
- state, &state->iov, &state->count);
- err = tsocket_error_from_errno(ret, errno, &dummy);
- if (tevent_req_error(req, err)) {
- return false;
- }
-
- for (i=0; i < state->count; i++) {
- size_t tmp = to_read;
- tmp += state->iov[i].iov_len;
-
- if (tmp < to_read) {
- tevent_req_error(req, EMSGSIZE);
- return false;
- }
-
- to_read = tmp;
- }
-
- if (to_read == 0) {
- tevent_req_done(req);
- return false;
- }
-
- if (state->total_read + to_read < state->total_read) {
- tevent_req_error(req, EMSGSIZE);
- return false;
- }
-
- return true;
-}
-
-static void tsocket_readv_handler(struct tsocket_context *sock,
- void *private_data);
-
-struct tevent_req *tsocket_readv_send(struct tsocket_context *sock,
- TALLOC_CTX *mem_ctx,
- tsocket_readv_next_iovec_t next_iovec_fn,
- void *private_data)
-{
- struct tevent_req *req;
- struct tsocket_readv_state *state;
- int ret;
- int err;
- bool dummy;
-
- req = tevent_req_create(mem_ctx, &state,
- struct tsocket_readv_state);
- if (!req) {
- return NULL;
- }
-
- state->caller.sock = sock;
- state->caller.next_iovec_fn = next_iovec_fn;
- state->caller.private_data = private_data;
-
- state->iov = NULL;
- state->count = 0;
- state->total_read = 0;
-
- if (!tsocket_readv_ask_for_next_vector(req, state)) {
- goto post;
- }
-
- talloc_set_destructor(state, tsocket_readv_state_destructor);
-
- ret = tsocket_set_readable_handler(sock,
- tsocket_readv_handler,
- req);
- err = tsocket_error_from_errno(ret, errno, &dummy);
- if (tevent_req_error(req, err)) {
- goto post;
- }
-
- return req;
-
- post:
- return tevent_req_post(req, sock->event.ctx);
-}
-
-static void tsocket_readv_handler(struct tsocket_context *sock,
- void *private_data)
-{
- struct tevent_req *req = talloc_get_type(private_data,
- struct tevent_req);
- struct tsocket_readv_state *state = tevent_req_data(req,
- struct tsocket_readv_state);
- ssize_t ret;
- int err;
- bool retry;
-
- ret = tsocket_readv(state->caller.sock,
- state->iov,
- state->count);
- err = tsocket_error_from_errno(ret, errno, &retry);
- if (retry) {
- /* retry later */
- return;
- }
- if (tevent_req_error(req, err)) {
- return;
- }
-
- state->total_read += ret;
-
- while (ret > 0) {
- if (ret < state->iov[0].iov_len) {
- uint8_t *base;
- base = (uint8_t *)state->iov[0].iov_base;
- base += ret;
- state->iov[0].iov_base = base;
- state->iov[0].iov_len -= ret;
- break;
- }
- ret -= state->iov[0].iov_len;
- state->iov += 1;
- state->count -= 1;
- }
-
- if (state->count) {
- /* we have more to read */
- return;
- }
-
- /* ask the callback for a new vector we should fill */
- tsocket_readv_ask_for_next_vector(req, state);
-}
-
-int tsocket_readv_recv(struct tevent_req *req, int *perrno)
-{
- struct tsocket_readv_state *state = tevent_req_data(req,
- struct tsocket_readv_state);
- int ret;
-
- ret = tsocket_simple_int_recv(req, perrno);
- if (ret == 0) {
- ret = state->total_read;
- }
-
- tevent_req_received(req);
- return ret;
-}
-