return (cli->max_xmit - (smb_size+32)) & ~1023;
}
+/****************************************************************************
+ Calculate the recommended write buffer size
+****************************************************************************/
+static size_t cli_write_max_bufsize(struct cli_state *cli, uint16_t write_mode)
+{
+ if (write_mode == 0 &&
+ !client_is_signing_on(cli) &&
+ !cli_encryption_on(cli) &&
+ (cli->posix_capabilities & CIFS_UNIX_LARGE_WRITE_CAP) &&
+ (cli->capabilities & CAP_LARGE_FILES)) {
+ /* Only do massive writes if we can do them direct
+ * with no signing or encrypting - not on a pipe. */
+ return CLI_SAMBA_MAX_POSIX_LARGE_WRITEX_SIZE;
+ }
+
+ if (cli->is_samba) {
+ return CLI_SAMBA_MAX_LARGE_WRITEX_SIZE;
+ }
+
+ if (((cli->capabilities & CAP_LARGE_WRITEX) == 0)
+ || client_is_signing_on(cli)
+ || strequal(cli->dev, "LPT1:")) {
+
+ /*
+ * Printer devices are restricted to max_xmit writesize in
+ * Vista and XPSP3 as are signing connections.
+ */
+
+ return (cli->max_xmit - (smb_size+32)) & ~1023;
+ }
+
+ return CLI_WINDOWS_MAX_LARGE_WRITEX_SIZE;
+}
+
+
/*
* Send a read&x request
*/
wct += 2;
}
- result = cli_request_send(mem_ctx, ev, cli, SMBreadX, 0, wct, vwv,
+ result = cli_request_send(mem_ctx, ev, cli, SMBreadX, 0, wct, vwv, 0,
0, NULL);
if (result == NULL) {
return NULL;
NTSTATUS status;
size_t size;
- if (async_req_is_error(req, &status)) {
+ if (async_req_is_nterror(req, &status)) {
return status;
}
struct cli_pull_state *state;
int i;
- result = async_req_new(mem_ctx, ev);
- if (result == NULL) {
- goto failed;
- }
- state = talloc(result, struct cli_pull_state);
- if (state == NULL) {
- goto failed;
+ if (!async_req_setup(mem_ctx, &result, &state,
+ struct cli_pull_state)) {
+ return NULL;
}
- result->private_data = state;
result->print = cli_pull_print;
state->req = result;
state->top_req = 0;
if (size == 0) {
- if (!async_post_status(result, NT_STATUS_OK)) {
+ if (!async_post_ntstatus(result, ev, NT_STATUS_OK)) {
goto failed;
}
return result;
status = cli_read_andx_recv(read_req, &read_state->data.read.received,
&read_state->data.read.rcvbuf);
if (!NT_STATUS_IS_OK(status)) {
- async_req_error(state->req, status);
+ async_req_nterror(state->req, status);
return;
}
top_read->data.read.received,
state->priv);
if (!NT_STATUS_IS_OK(status)) {
- async_req_error(state->req, status);
+ async_req_nterror(state->req, status);
return;
}
state->pushed += top_read->data.read.received;
req->private_data, struct cli_pull_state);
NTSTATUS status;
- if (async_req_is_error(req, &status)) {
+ if (async_req_is_nterror(req, &status)) {
return status;
}
*received = state->pushed;
mpx = 1;
}
- /* Default (small) writesize. */
- writesize = (cli->max_xmit - (smb_size+32)) & ~1023;
-
- if (write_mode == 0 &&
- !client_is_signing_on(cli) &&
- !cli_encryption_on(cli) &&
- (cli->posix_capabilities & CIFS_UNIX_LARGE_WRITE_CAP) &&
- (cli->capabilities & CAP_LARGE_FILES)) {
- /* Only do massive writes if we can do them direct
- * with no signing or encrypting - not on a pipe. */
- writesize = CLI_SAMBA_MAX_POSIX_LARGE_WRITEX_SIZE;
- } else if ((cli->capabilities & CAP_LARGE_WRITEX) &&
- (strcmp(cli->dev, "LPT1:") != 0)) {
-
- /* Printer devices are restricted to max_xmit
- * writesize in Vista and XPSP3. */
-
- if (cli->is_samba) {
- writesize = CLI_SAMBA_MAX_LARGE_WRITEX_SIZE;
- } else if (!client_is_signing_on(cli)) {
- /* Windows restricts signed writes to max_xmit.
- * Found by Volker. */
- writesize = CLI_WINDOWS_MAX_LARGE_WRITEX_SIZE;
- }
- }
+ writesize = cli_write_max_bufsize(cli, write_mode);
blocks = (size + (writesize-1)) / writesize;
return total;
}
+
+/*
+ * Send a write&x request
+ */
+
+struct async_req *cli_write_andx_send(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli, uint16_t fnum,
+ uint16_t mode, const uint8_t *buf,
+ off_t offset, size_t size)
+{
+ bool bigoffset = ((cli->capabilities & CAP_LARGE_FILES) != 0);
+ uint8_t wct = bigoffset ? 14 : 12;
+ size_t max_write = cli_write_max_bufsize(cli, mode);
+ uint16_t vwv[14];
+
+ size = MIN(size, max_write);
+
+ SCVAL(vwv+0, 0, 0xFF);
+ SCVAL(vwv+0, 1, 0);
+ SSVAL(vwv+1, 0, 0);
+ SSVAL(vwv+2, 0, fnum);
+ SIVAL(vwv+3, 0, offset);
+ SIVAL(vwv+5, 0, 0);
+ SSVAL(vwv+7, 0, mode);
+ SSVAL(vwv+8, 0, 0);
+ SSVAL(vwv+9, 0, (size>>16));
+ SSVAL(vwv+10, 0, size);
+
+ SSVAL(vwv+11, 0,
+ cli_wct_ofs(cli)
+ + 1 /* the wct field */
+ + wct * 2 /* vwv */
+ + 2 /* num_bytes field */
+ + 1 /* pad */);
+
+ if (bigoffset) {
+ SIVAL(vwv+12, 0, (((uint64_t)offset)>>32) & 0xffffffff);
+ }
+
+ return cli_request_send(mem_ctx, ev, cli, SMBwriteX, 0, wct, vwv,
+ 2, size, buf);
+}
+
+NTSTATUS cli_write_andx_recv(struct async_req *req, size_t *pwritten)
+{
+ uint8_t wct;
+ uint16_t *vwv;
+ uint16_t num_bytes;
+ uint8_t *bytes;
+ NTSTATUS status;
+ size_t written;
+
+ if (async_req_is_nterror(req, &status)) {
+ return status;
+ }
+
+ status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
+
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+
+ if (wct < 6) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+
+ written = SVAL(vwv+2, 0);
+ written |= SVAL(vwv+4, 0)<<16;
+ *pwritten = written;
+
+ return NT_STATUS_OK;
+}
+
+struct cli_writeall_state {
+ struct event_context *ev;
+ struct cli_state *cli;
+ uint16_t fnum;
+ uint16_t mode;
+ const uint8_t *buf;
+ off_t offset;
+ size_t size;
+ size_t written;
+};
+
+static void cli_writeall_written(struct async_req *req);
+
+static struct async_req *cli_writeall_send(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli,
+ uint16_t fnum,
+ uint16_t mode,
+ const uint8_t *buf,
+ off_t offset, size_t size)
+{
+ struct async_req *result;
+ struct async_req *subreq;
+ struct cli_writeall_state *state;
+
+ if (!async_req_setup(mem_ctx, &result, &state,
+ struct cli_writeall_state)) {
+ return NULL;
+ }
+ state->ev = ev;
+ state->cli = cli;
+ state->fnum = fnum;
+ state->mode = mode;
+ state->buf = buf;
+ state->offset = offset;
+ state->size = size;
+ state->written = 0;
+
+ subreq = cli_write_andx_send(state, state->ev, state->cli, state->fnum,
+ state->mode, state->buf, state->offset,
+ state->size);
+ if (subreq == NULL) {
+ goto fail;
+ }
+
+ subreq->async.fn = cli_writeall_written;
+ subreq->async.priv = result;
+ return result;
+
+ fail:
+ TALLOC_FREE(result);
+ return NULL;
+}
+
+static void cli_writeall_written(struct async_req *subreq)
+{
+ struct async_req *req = talloc_get_type_abort(
+ subreq->async.priv, struct async_req);
+ struct cli_writeall_state *state = talloc_get_type_abort(
+ req->private_data, struct cli_writeall_state);
+ NTSTATUS status;
+ size_t written, to_write;
+
+ status = cli_write_andx_recv(subreq, &written);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ async_req_nterror(req, status);
+ return;
+ }
+
+ state->written += written;
+
+ if (state->written > state->size) {
+ async_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ to_write = state->size - state->written;
+
+ if (to_write == 0) {
+ async_req_done(req);
+ return;
+ }
+
+ subreq = cli_write_andx_send(state, state->ev, state->cli, state->fnum,
+ state->mode,
+ state->buf + state->written,
+ state->offset + state->written, to_write);
+ if (subreq == NULL) {
+ async_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+
+ subreq->async.fn = cli_writeall_written;
+ subreq->async.priv = req;
+}
+
+static NTSTATUS cli_writeall_recv(struct async_req *req)
+{
+ return async_req_simple_recv_ntstatus(req);
+}
+
+struct cli_push_write_state {
+ struct async_req *req;/* This is the main request! Not the subreq */
+ uint32_t idx;
+ off_t ofs;
+ uint8_t *buf;
+ size_t size;
+};
+
+struct cli_push_state {
+ struct event_context *ev;
+ struct cli_state *cli;
+ uint16_t fnum;
+ uint16_t mode;
+ off_t start_offset;
+ size_t window_size;
+
+ size_t (*source)(uint8_t *buf, size_t n, void *priv);
+ void *priv;
+
+ bool eof;
+
+ size_t chunk_size;
+ off_t next_offset;
+
+ /*
+ * Outstanding requests
+ */
+ uint32_t pending;
+ uint32_t num_reqs;
+ struct cli_push_write_state **reqs;
+};
+
+static void cli_push_written(struct async_req *req);
+
+static bool cli_push_write_setup(struct async_req *req,
+ struct cli_push_state *state,
+ uint32_t idx)
+{
+ struct cli_push_write_state *substate;
+ struct async_req *subreq;
+
+ substate = talloc(state->reqs, struct cli_push_write_state);
+ if (!substate) {
+ return false;
+ }
+ substate->req = req;
+ substate->idx = idx;
+ substate->ofs = state->next_offset;
+ substate->buf = talloc_array(substate, uint8_t, state->chunk_size);
+ if (!substate->buf) {
+ talloc_free(substate);
+ return false;
+ }
+ substate->size = state->source(substate->buf,
+ state->chunk_size,
+ state->priv);
+ if (substate->size == 0) {
+ state->eof = true;
+ /* nothing to send */
+ talloc_free(substate);
+ return true;
+ }
+
+ subreq = cli_writeall_send(substate,
+ state->ev, state->cli,
+ state->fnum, state->mode,
+ substate->buf,
+ substate->ofs,
+ substate->size);
+ if (!subreq) {
+ talloc_free(substate);
+ return false;
+ }
+ subreq->async.fn = cli_push_written;
+ subreq->async.priv = substate;
+
+ state->reqs[idx] = substate;
+ state->pending += 1;
+ state->next_offset += substate->size;
+
+ return true;
+}
+
+struct async_req *cli_push_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
+ struct cli_state *cli,
+ uint16_t fnum, uint16_t mode,
+ off_t start_offset, size_t window_size,
+ size_t (*source)(uint8_t *buf, size_t n,
+ void *priv),
+ void *priv)
+{
+ struct async_req *req;
+ struct cli_push_state *state;
+ uint32_t i;
+
+ if (!async_req_setup(mem_ctx, &req, &state,
+ struct cli_push_state)) {
+ return NULL;
+ }
+ state->cli = cli;
+ state->ev = ev;
+ state->fnum = fnum;
+ state->start_offset = start_offset;
+ state->mode = mode;
+ state->source = source;
+ state->priv = priv;
+ state->eof = false;
+ state->pending = 0;
+ state->next_offset = start_offset;
+
+ state->chunk_size = cli_write_max_bufsize(cli, mode);
+
+ if (window_size == 0) {
+ window_size = cli->max_mux * state->chunk_size;
+ }
+ state->num_reqs = window_size/state->chunk_size;
+ if ((window_size % state->chunk_size) > 0) {
+ state->num_reqs += 1;
+ }
+ state->num_reqs = MIN(state->num_reqs, cli->max_mux);
+ state->num_reqs = MAX(state->num_reqs, 1);
+
+ state->reqs = TALLOC_ZERO_ARRAY(state, struct cli_push_write_state *,
+ state->num_reqs);
+ if (state->reqs == NULL) {
+ goto failed;
+ }
+
+ for (i=0; i<state->num_reqs; i++) {
+ if (!cli_push_write_setup(req, state, i)) {
+ goto failed;
+ }
+
+ if (state->eof) {
+ break;
+ }
+ }
+
+ if (state->pending == 0) {
+ if (!async_post_ntstatus(req, ev, NT_STATUS_OK)) {
+ goto failed;
+ }
+ return req;
+ }
+
+ return req;
+
+ failed:
+ TALLOC_FREE(req);
+ return NULL;
+}
+
+static void cli_push_written(struct async_req *subreq)
+{
+ struct cli_push_write_state *substate = talloc_get_type_abort(
+ subreq->async.priv, struct cli_push_write_state);
+ struct async_req *req = substate->req;
+ struct cli_push_state *state = talloc_get_type_abort(
+ req->private_data, struct cli_push_state);
+ NTSTATUS status;
+ uint32_t idx = substate->idx;
+
+ state->reqs[idx] = NULL;
+ state->pending -= 1;
+
+ status = cli_writeall_recv(subreq);
+ TALLOC_FREE(subreq);
+ TALLOC_FREE(substate);
+ if (!NT_STATUS_IS_OK(status)) {
+ async_req_nterror(req, status);
+ return;
+ }
+
+ if (!state->eof) {
+ if (!cli_push_write_setup(req, state, idx)) {
+ async_req_nomem(NULL, req);
+ return;
+ }
+ }
+
+ if (state->pending == 0) {
+ async_req_done(req);
+ return;
+ }
+}
+
+NTSTATUS cli_push_recv(struct async_req *req)
+{
+ return async_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS cli_push(struct cli_state *cli, uint16_t fnum, uint16_t mode,
+ off_t start_offset, size_t window_size,
+ size_t (*source)(uint8_t *buf, size_t n, void *priv),
+ void *priv)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct event_context *ev;
+ struct async_req *req;
+ NTSTATUS result = NT_STATUS_NO_MEMORY;
+
+ if (cli->fd_event != NULL) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ ev = event_context_init(frame);
+ if (ev == NULL) {
+ goto nomem;
+ }
+
+ req = cli_push_send(frame, ev, cli, fnum, mode, start_offset,
+ window_size, source, priv);
+ if (req == NULL) {
+ goto nomem;
+ }
+
+ while (req->state < ASYNC_REQ_DONE) {
+ event_loop_once(ev);
+ }
+
+ result = cli_push_recv(req);
+ nomem:
+ TALLOC_FREE(frame);
+ return result;
+}
git.samba.org / ira / wip.git / blobdiff