return status;
}
+struct cli_read_state {
+ struct cli_state *cli;
+ char *buf;
+ size_t buflen;
+ size_t received;
+};
+
+static void cli_read_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_read_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct cli_state *cli,
+ uint16_t fnum,
+ char *buf,
+ off_t offset,
+ size_t size)
+{
+ struct tevent_req *req, *subreq;
+ struct cli_read_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_read_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->cli = cli;
+ state->buf = buf;
+ state->buflen = size;
+
+ if (smbXcli_conn_protocol(state->cli->conn) >= PROTOCOL_SMB2_02) {
+ uint32_t max_size;
+ bool ok;
+
+ ok = smb2cli_conn_req_possible(state->cli->conn, &max_size);
+ if (!ok) {
+ tevent_req_nterror(
+ req,
+ NT_STATUS_INSUFFICIENT_RESOURCES);
+ return tevent_req_post(req, ev);
+ }
+
+ /*
+ * downgrade depending on the available credits
+ */
+ size = MIN(max_size, size);
+
+ subreq = cli_smb2_read_send(
+ state, ev, cli, fnum, offset, size);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ } else {
+ bool ok;
+ ok = smb1cli_conn_req_possible(state->cli->conn);
+ if (!ok) {
+ tevent_req_nterror(
+ req,
+ NT_STATUS_INSUFFICIENT_RESOURCES);
+ return tevent_req_post(req, ev);
+ }
+
+ subreq = cli_read_andx_send(
+ state, ev, cli, fnum, offset, size);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ }
+
+ tevent_req_set_callback(subreq, cli_read_done, req);
+
+ return req;
+}
+
+static void cli_read_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_read_state *state = tevent_req_data(
+ req, struct cli_read_state);
+ NTSTATUS status;
+ ssize_t received;
+ uint8_t *buf;
+
+ if (smbXcli_conn_protocol(state->cli->conn) >= PROTOCOL_SMB2_02) {
+ status = cli_smb2_read_recv(subreq, &received, &buf);
+ } else {
+ status = cli_read_andx_recv(subreq, &received, &buf);
+ }
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_END_OF_FILE)) {
+ received = 0;
+ status = NT_STATUS_OK;
+ }
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+ if ((received < 0) || (received > state->buflen)) {
+ state->received = 0;
+ tevent_req_nterror(req, NT_STATUS_UNEXPECTED_IO_ERROR);
+ return;
+ }
+
+ memcpy(state->buf, buf, received);
+ state->received = received;
+ tevent_req_done(req);
+}
+
+NTSTATUS cli_read_recv(struct tevent_req *req, size_t *received)
+{
+ struct cli_read_state *state = tevent_req_data(
+ req, struct cli_read_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+ if (received != NULL) {
+ *received = state->received;
+ }
+ return NT_STATUS_OK;
+}
+
static NTSTATUS cli_read_sink(char *buf, size_t n, void *priv)
{
char **pbuf = (char **)priv;
off_t start_offset, off_t size, size_t window_size,
NTSTATUS (*sink)(char *buf, size_t n, void *priv),
void *priv, off_t *received);
+struct tevent_req *cli_read_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct cli_state *cli,
+ uint16_t fnum,
+ char *buf,
+ off_t offset,
+ size_t size);
+NTSTATUS cli_read_recv(struct tevent_req *req, size_t *received);
NTSTATUS cli_read(struct cli_state *cli, uint16_t fnum,
char *buf, off_t offset, size_t size,
size_t *nread);