return (cli->max_xmit - (smb_size+32)) & ~1023;
}
-/*
- * Send a read&x request
- */
-
-struct async_req *cli_read_andx_send(TALLOC_CTX *mem_ctx,
- struct event_context *ev,
- struct cli_state *cli, int fnum,
- off_t offset, size_t size)
+/****************************************************************************
+ Calculate the recommended write buffer size
+****************************************************************************/
+static size_t cli_write_max_bufsize(struct cli_state *cli, uint16_t write_mode)
{
- struct async_req *result;
- struct cli_request *req;
- bool bigoffset = False;
+ 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;
+}
+
+struct cli_read_andx_state {
+ size_t size;
uint16_t vwv[12];
+ NTSTATUS status;
+ size_t received;
+ uint8_t *buf;
+};
+
+static void cli_read_andx_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_read_andx_create(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli, uint16_t fnum,
+ off_t offset, size_t size,
+ struct tevent_req **psmbreq)
+{
+ struct tevent_req *req, *subreq;
+ struct cli_read_andx_state *state;
uint8_t wct = 10;
if (size > cli_read_max_bufsize(cli)) {
return NULL;
}
- 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);
- SSVAL(vwv + 5, 0, size);
- SSVAL(vwv + 6, 0, size);
- SSVAL(vwv + 7, 0, (size >> 16));
- SSVAL(vwv + 8, 0, 0);
- SSVAL(vwv + 9, 0, 0);
+ req = tevent_req_create(mem_ctx, &state, struct cli_read_andx_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->size = size;
+
+ SCVAL(state->vwv + 0, 0, 0xFF);
+ SCVAL(state->vwv + 0, 1, 0);
+ SSVAL(state->vwv + 1, 0, 0);
+ SSVAL(state->vwv + 2, 0, fnum);
+ SIVAL(state->vwv + 3, 0, offset);
+ SSVAL(state->vwv + 5, 0, size);
+ SSVAL(state->vwv + 6, 0, size);
+ SSVAL(state->vwv + 7, 0, (size >> 16));
+ SSVAL(state->vwv + 8, 0, 0);
+ SSVAL(state->vwv + 9, 0, 0);
if ((uint64_t)offset >> 32) {
- bigoffset = True;
- SIVAL(vwv + 10, 0,
+ SIVAL(state->vwv + 10, 0,
(((uint64_t)offset)>>32) & 0xffffffff);
wct += 2;
}
- result = cli_request_send(mem_ctx, ev, cli, SMBreadX, 0, wct, vwv,
- 0, NULL);
- if (result == NULL) {
+ subreq = cli_smb_req_create(state, ev, cli, SMBreadX, 0, wct,
+ state->vwv, 0, NULL);
+ if (subreq == NULL) {
+ TALLOC_FREE(req);
return NULL;
}
+ tevent_req_set_callback(subreq, cli_read_andx_done, req);
+ *psmbreq = subreq;
+ return req;
+}
- req = talloc_get_type_abort(result->private_data, struct cli_request);
+struct tevent_req *cli_read_andx_send(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli, uint16_t fnum,
+ off_t offset, size_t size)
+{
+ struct tevent_req *req, *subreq;
+ NTSTATUS status;
- req->data.read.ofs = offset;
- req->data.read.size = size;
- req->data.read.received = 0;
- req->data.read.rcvbuf = NULL;
+ req = cli_read_andx_create(mem_ctx, ev, cli, fnum, offset, size,
+ &subreq);
+ if (req == NULL) {
+ return NULL;
+ }
- return result;
+ status = cli_smb_req_send(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+ return req;
+}
+
+static void cli_read_andx_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_read_andx_state *state = tevent_req_data(
+ req, struct cli_read_andx_state);
+ uint8_t *inbuf;
+ uint8_t wct;
+ uint16_t *vwv;
+ uint32_t num_bytes;
+ uint8_t *bytes;
+
+ state->status = cli_smb_recv(subreq, state, &inbuf, 12, &wct, &vwv,
+ &num_bytes, &bytes);
+ TALLOC_FREE(subreq);
+ if (NT_STATUS_IS_ERR(state->status)) {
+ tevent_req_nterror(req, state->status);
+ return;
+ }
+
+ /* size is the number of bytes the server returned.
+ * Might be zero. */
+ state->received = SVAL(vwv + 5, 0);
+ state->received |= (((unsigned int)SVAL(vwv + 7, 0)) << 16);
+
+ if (state->received > state->size) {
+ DEBUG(5,("server returned more than we wanted!\n"));
+ tevent_req_nterror(req, NT_STATUS_UNEXPECTED_IO_ERROR);
+ return;
+ }
+
+ /*
+ * bcc field must be valid for small reads, for large reads the 16-bit
+ * bcc field can't be correct.
+ */
+
+ if ((state->received < 0xffff) && (state->received > num_bytes)) {
+ DEBUG(5, ("server announced more bytes than sent\n"));
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ state->buf = (uint8_t *)smb_base(inbuf) + SVAL(vwv+6, 0);
+
+ if (trans_oob(smb_len(inbuf), SVAL(vwv+6, 0), state->received)
+ || ((state->received != 0) && (state->buf < bytes))) {
+ DEBUG(5, ("server returned invalid read&x data offset\n"));
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+ tevent_req_done(req);
}
/*
* talloc_move it!
*/
-NTSTATUS cli_read_andx_recv(struct async_req *req, ssize_t *received,
+NTSTATUS cli_read_andx_recv(struct tevent_req *req, ssize_t *received,
uint8_t **rcvbuf)
{
- struct cli_request *cli_req = talloc_get_type_abort(
- req->private_data, struct cli_request);
- uint8_t wct;
- uint16_t *vwv;
- uint16_t num_bytes;
- uint8_t *bytes;
- uint8_t *buf;
+ struct cli_read_andx_state *state = tevent_req_data(
+ req, struct cli_read_andx_state);
NTSTATUS status;
- size_t size;
- if (async_req_is_error(req, &status)) {
+ if (tevent_req_is_nterror(req, &status)) {
return status;
}
+ *received = state->received;
+ *rcvbuf = state->buf;
+ return NT_STATUS_OK;
+}
+
+struct cli_readall_state {
+ struct tevent_context *ev;
+ struct cli_state *cli;
+ uint16_t fnum;
+ off_t start_offset;
+ size_t size;
+ size_t received;
+ uint8_t *buf;
+};
- status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
+static void cli_readall_done(struct tevent_req *subreq);
- if (NT_STATUS_IS_ERR(status)) {
- return status;
+static struct tevent_req *cli_readall_send(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli,
+ uint16_t fnum,
+ off_t offset, size_t size)
+{
+ struct tevent_req *req, *subreq;
+ struct cli_readall_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_readall_state);
+ if (req == NULL) {
+ return NULL;
}
+ state->ev = ev;
+ state->cli = cli;
+ state->fnum = fnum;
+ state->start_offset = offset;
+ state->size = size;
+ state->received = 0;
+ state->buf = NULL;
- if (wct < 12) {
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ 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_readall_done, req);
+ return req;
+}
- /* size is the number of bytes the server returned.
- * Might be zero. */
- size = SVAL(vwv + 5, 0);
- size |= (((unsigned int)SVAL(vwv + 7, 0)) << 16);
+static void cli_readall_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_readall_state *state = tevent_req_data(
+ req, struct cli_readall_state);
+ ssize_t received;
+ uint8_t *buf;
+ NTSTATUS status;
- if (size > cli_req->data.read.size) {
- DEBUG(5,("server returned more than we wanted!\n"));
- return NT_STATUS_UNEXPECTED_IO_ERROR;
+ status = cli_read_andx_recv(subreq, &received, &buf);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+
+ if (received == 0) {
+ /* EOF */
+ tevent_req_done(req);
+ return;
+ }
+
+ if ((state->received == 0) && (received == state->size)) {
+ /* Ideal case: Got it all in one run */
+ state->buf = buf;
+ state->received += received;
+ tevent_req_done(req);
+ return;
}
/*
- * bcc field must be valid for small reads, for large reads the 16-bit
- * bcc field can't be correct.
+ * We got a short read, issue a read for the
+ * rest. Unfortunately we have to allocate the buffer
+ * ourselves now, as our caller expects to receive a single
+ * buffer. cli_read_andx does it from the buffer received from
+ * the net, but with a short read we have to put it together
+ * from several reads.
*/
- if ((size < 0xffff) && (size > num_bytes)) {
- DEBUG(5, ("server announced more bytes than sent\n"));
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ if (state->buf == NULL) {
+ state->buf = talloc_array(state, uint8_t, state->size);
+ if (tevent_req_nomem(state->buf, req)) {
+ return;
+ }
}
+ memcpy(state->buf + state->received, buf, received);
+ state->received += received;
- buf = (uint8_t *)smb_base(cli_req->inbuf) + SVAL(vwv+6, 0);
+ TALLOC_FREE(subreq);
- if (trans_oob(smb_len(cli_req->inbuf), SVAL(vwv+6, 0), size)
- || (buf < bytes)) {
- DEBUG(5, ("server returned invalid read&x data offset\n"));
- return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ if (state->received >= state->size) {
+ tevent_req_done(req);
+ return;
}
- *rcvbuf = (uint8_t *)(smb_base(cli_req->inbuf) + SVAL(vwv + 6, 0));
- *received = size;
+ subreq = cli_read_andx_send(state, state->ev, state->cli, state->fnum,
+ state->start_offset + state->received,
+ state->size - state->received);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cli_readall_done, req);
+}
+
+static NTSTATUS cli_readall_recv(struct tevent_req *req, ssize_t *received,
+ uint8_t **rcvbuf)
+{
+ struct cli_readall_state *state = tevent_req_data(
+ req, struct cli_readall_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+ *received = state->received;
+ *rcvbuf = state->buf;
return NT_STATUS_OK;
}
+struct cli_pull_subreq {
+ struct tevent_req *req;
+ ssize_t received;
+ uint8_t *buf;
+};
+
/*
* Parallel read support.
*
*/
struct cli_pull_state {
- struct async_req *req;
+ struct tevent_req *req;
struct event_context *ev;
struct cli_state *cli;
* Outstanding requests
*/
int num_reqs;
- struct async_req **reqs;
+ struct cli_pull_subreq *reqs;
/*
* For how many bytes did we send requests already?
SMB_OFF_T pushed;
};
-static char *cli_pull_print(TALLOC_CTX *mem_ctx, struct async_req *req)
+static char *cli_pull_print(struct tevent_req *req, TALLOC_CTX *mem_ctx)
{
- struct cli_pull_state *state = talloc_get_type_abort(
- req->private_data, struct cli_pull_state);
+ struct cli_pull_state *state = tevent_req_data(
+ req, struct cli_pull_state);
char *result;
- result = async_req_print(mem_ctx, req);
+ result = tevent_req_print(mem_ctx, req);
if (result == NULL) {
return NULL;
}
state->num_reqs, state->top_req);
}
-static void cli_pull_read_done(struct async_req *read_req);
+static void cli_pull_read_done(struct tevent_req *read_req);
/*
* Prepare an async pull request
*/
-struct async_req *cli_pull_send(TALLOC_CTX *mem_ctx,
- struct event_context *ev,
- struct cli_state *cli,
- uint16_t fnum, off_t start_offset,
- SMB_OFF_T size, size_t window_size,
- NTSTATUS (*sink)(char *buf, size_t n,
- void *priv),
- void *priv)
+struct tevent_req *cli_pull_send(TALLOC_CTX *mem_ctx,
+ struct event_context *ev,
+ struct cli_state *cli,
+ uint16_t fnum, off_t start_offset,
+ SMB_OFF_T size, size_t window_size,
+ NTSTATUS (*sink)(char *buf, size_t n,
+ void *priv),
+ void *priv)
{
- struct async_req *result;
+ struct tevent_req *req;
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;
+ req = tevent_req_create(mem_ctx, &state, struct cli_pull_state);
+ if (req == NULL) {
+ return NULL;
}
- result->private_data = state;
- result->print = cli_pull_print;
- state->req = result;
+ tevent_req_set_print_fn(req, cli_pull_print);
+ state->req = req;
state->cli = cli;
state->ev = ev;
state->top_req = 0;
if (size == 0) {
- if (!async_post_status(result, NT_STATUS_OK)) {
- goto failed;
- }
- return result;
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
}
state->chunk_size = cli_read_max_bufsize(cli);
state->num_reqs = MAX(window_size/state->chunk_size, 1);
state->num_reqs = MIN(state->num_reqs, cli->max_mux);
- state->reqs = TALLOC_ZERO_ARRAY(state, struct async_req *,
+ state->reqs = TALLOC_ZERO_ARRAY(state, struct cli_pull_subreq,
state->num_reqs);
if (state->reqs == NULL) {
goto failed;
state->requested = 0;
for (i=0; i<state->num_reqs; i++) {
+ struct cli_pull_subreq *subreq = &state->reqs[i];
SMB_OFF_T size_left;
size_t request_thistime;
size_left = size - state->requested;
request_thistime = MIN(size_left, state->chunk_size);
- state->reqs[i] = cli_read_andx_send(
+ subreq->req = cli_readall_send(
state->reqs, ev, cli, fnum,
state->start_offset + state->requested,
request_thistime);
- if (state->reqs[i] == NULL) {
+ if (subreq->req == NULL) {
goto failed;
}
-
- state->reqs[i]->async.fn = cli_pull_read_done;
- state->reqs[i]->async.priv = result;
-
+ tevent_req_set_callback(subreq->req, cli_pull_read_done, req);
state->requested += request_thistime;
}
- return result;
+ return req;
failed:
- TALLOC_FREE(result);
+ TALLOC_FREE(req);
return NULL;
}
* requests if necessary.
*/
-static void cli_pull_read_done(struct async_req *read_req)
+static void cli_pull_read_done(struct tevent_req *subreq)
{
- struct async_req *pull_req = talloc_get_type_abort(
- read_req->async.priv, struct async_req);
- struct cli_pull_state *state = talloc_get_type_abort(
- pull_req->private_data, struct cli_pull_state);
- struct cli_request *read_state = talloc_get_type_abort(
- read_req->private_data, struct cli_request);
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_pull_state *state = tevent_req_data(
+ req, struct cli_pull_state);
+ struct cli_pull_subreq *pull_subreq = NULL;
NTSTATUS status;
+ int i;
+
+ for (i = 0; i < state->num_reqs; i++) {
+ pull_subreq = &state->reqs[i];
+ if (subreq == pull_subreq->req) {
+ break;
+ }
+ }
+ if (i == state->num_reqs) {
+ /* Huh -- received something we did not send?? */
+ tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+ return;
+ }
- status = cli_read_andx_recv(read_req, &read_state->data.read.received,
- &read_state->data.read.rcvbuf);
+ status = cli_readall_recv(subreq, &pull_subreq->received,
+ &pull_subreq->buf);
if (!NT_STATUS_IS_OK(status)) {
- async_req_error(state->req, status);
+ tevent_req_nterror(state->req, status);
return;
}
* requests.
*/
- while (state->reqs[state->top_req] != NULL) {
- struct cli_request *top_read;
+ while (state->reqs[state->top_req].req != NULL) {
+ struct cli_pull_subreq *top_subreq;
DEBUG(11, ("cli_pull_read_done: top_req = %d\n",
state->top_req));
- if (state->reqs[state->top_req]->state < ASYNC_REQ_DONE) {
+ top_subreq = &state->reqs[state->top_req];
+
+ if (tevent_req_is_in_progress(top_subreq->req)) {
DEBUG(11, ("cli_pull_read_done: top request not yet "
"done\n"));
return;
}
- top_read = talloc_get_type_abort(
- state->reqs[state->top_req]->private_data,
- struct cli_request);
-
DEBUG(10, ("cli_pull_read_done: Pushing %d bytes, %d already "
- "pushed\n", (int)top_read->data.read.received,
+ "pushed\n", (int)top_subreq->received,
(int)state->pushed));
- status = state->sink((char *)top_read->data.read.rcvbuf,
- top_read->data.read.received,
- state->priv);
+ status = state->sink((char *)top_subreq->buf,
+ top_subreq->received, state->priv);
if (!NT_STATUS_IS_OK(status)) {
- async_req_error(state->req, status);
+ tevent_req_nterror(state->req, status);
return;
}
- state->pushed += top_read->data.read.received;
+ state->pushed += top_subreq->received;
- TALLOC_FREE(state->reqs[state->top_req]);
+ TALLOC_FREE(state->reqs[state->top_req].req);
if (state->requested < state->size) {
- struct async_req *new_req;
+ struct tevent_req *new_req;
SMB_OFF_T size_left;
size_t request_thistime;
+ state->requested),
state->top_req));
- new_req = cli_read_andx_send(
+ new_req = cli_readall_send(
state->reqs, state->ev, state->cli,
state->fnum,
state->start_offset + state->requested,
request_thistime);
- if (async_req_nomem(new_req, state->req)) {
+ if (tevent_req_nomem(new_req, state->req)) {
return;
}
+ tevent_req_set_callback(new_req, cli_pull_read_done,
+ req);
- new_req->async.fn = cli_pull_read_done;
- new_req->async.priv = pull_req;
-
- state->reqs[state->top_req] = new_req;
+ state->reqs[state->top_req].req = new_req;
state->requested += request_thistime;
}
state->top_req = (state->top_req+1) % state->num_reqs;
}
- async_req_done(pull_req);
+ tevent_req_done(req);
}
-NTSTATUS cli_pull_recv(struct async_req *req, SMB_OFF_T *received)
+NTSTATUS cli_pull_recv(struct tevent_req *req, SMB_OFF_T *received)
{
- struct cli_pull_state *state = talloc_get_type_abort(
- req->private_data, struct cli_pull_state);
+ struct cli_pull_state *state = tevent_req_data(
+ req, struct cli_pull_state);
NTSTATUS status;
- if (async_req_is_error(req, &status)) {
+ if (tevent_req_is_nterror(req, &status)) {
return status;
}
*received = state->pushed;
{
TALLOC_CTX *frame = talloc_stackframe();
struct event_context *ev;
- struct async_req *req;
- NTSTATUS result = NT_STATUS_NO_MEMORY;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_OK;
- if (cli->fd_event != NULL) {
+ if (cli_has_async_calls(cli)) {
/*
* Can't use sync call while an async call is in flight
*/
- return NT_STATUS_INVALID_PARAMETER;
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
}
ev = event_context_init(frame);
if (ev == NULL) {
- goto nomem;
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
}
req = cli_pull_send(frame, ev, cli, fnum, start_offset, size,
window_size, sink, priv);
if (req == NULL) {
- goto nomem;
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
}
- while (req->state < ASYNC_REQ_DONE) {
- event_loop_once(ev);
+ if (!tevent_req_poll(req, ev)) {
+ status = map_nt_error_from_unix(errno);
+ goto fail;
}
- result = cli_pull_recv(req, received);
- nomem:
+ status = cli_pull_recv(req, received);
+ fail:
TALLOC_FREE(frame);
- return result;
+ if (!NT_STATUS_IS_OK(status)) {
+ cli_set_error(cli, status);
+ }
+ return status;
}
static NTSTATUS cli_read_sink(char *buf, size_t n, void *priv)
return NT_STATUS_OK;
}
-ssize_t cli_read(struct cli_state *cli, int fnum, char *buf,
+ssize_t cli_read(struct cli_state *cli, uint16_t fnum, char *buf,
off_t offset, size_t size)
{
NTSTATUS status;
****************************************************************************/
static bool cli_issue_write(struct cli_state *cli,
- int fnum,
+ uint16_t fnum,
off_t offset,
uint16 mode,
const char *buf,
****************************************************************************/
ssize_t cli_write(struct cli_state *cli,
- int fnum, uint16 write_mode,
+ uint16_t fnum, uint16 write_mode,
const char *buf, off_t offset, size_t size)
{
ssize_t bwritten = 0;
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;
****************************************************************************/
ssize_t cli_smbwrite(struct cli_state *cli,
- int fnum, char *buf, off_t offset, size_t size1)
+ uint16_t fnum, char *buf, off_t offset, size_t size1)
{
char *p;
ssize_t total = 0;
return total;
}
+
+/*
+ * Send a write&x request
+ */
+
+struct cli_write_andx_state {
+ size_t size;
+ uint16_t vwv[14];
+ size_t written;
+ uint8_t pad;
+ struct iovec iov[2];
+};
+
+static void cli_write_andx_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_write_andx_create(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 tevent_req **reqs_before,
+ int num_reqs_before,
+ struct tevent_req **psmbreq)
+{
+ struct tevent_req *req, *subreq;
+ struct cli_write_andx_state *state;
+ 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;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_write_andx_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ size = MIN(size, max_write);
+
+ vwv = state->vwv;
+
+ 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_smb_wct_ofs(reqs_before, num_reqs_before)
+ + 1 /* the wct field */
+ + wct * 2 /* vwv */
+ + 2 /* num_bytes field */
+ + 1 /* pad */);
+
+ if (bigoffset) {
+ SIVAL(vwv+12, 0, (((uint64_t)offset)>>32) & 0xffffffff);
+ }
+
+ state->pad = 0;
+ state->iov[0].iov_base = (void *)&state->pad;
+ state->iov[0].iov_len = 1;
+ state->iov[1].iov_base = CONST_DISCARD(void *, buf);
+ state->iov[1].iov_len = size;
+
+ subreq = cli_smb_req_create(state, ev, cli, SMBwriteX, 0, wct, vwv,
+ 2, state->iov);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, cli_write_andx_done, req);
+ *psmbreq = subreq;
+ return req;
+}
+
+struct tevent_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)
+{
+ struct tevent_req *req, *subreq;
+ NTSTATUS status;
+
+ req = cli_write_andx_create(mem_ctx, ev, cli, fnum, mode, buf, offset,
+ size, NULL, 0, &subreq);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ status = cli_smb_req_send(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+ return req;
+}
+
+static void cli_write_andx_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_write_andx_state *state = tevent_req_data(
+ req, struct cli_write_andx_state);
+ uint8_t wct;
+ uint16_t *vwv;
+ NTSTATUS status;
+
+ status = cli_smb_recv(subreq, NULL, NULL, 6, &wct, &vwv, NULL, NULL);
+ if (NT_STATUS_IS_ERR(status)) {
+ TALLOC_FREE(subreq);
+ tevent_req_nterror(req, status);
+ return;
+ }
+ state->written = SVAL(vwv+2, 0);
+ state->written |= SVAL(vwv+4, 0)<<16;
+ tevent_req_done(req);
+}
+
+NTSTATUS cli_write_andx_recv(struct tevent_req *req, size_t *pwritten)
+{
+ struct cli_write_andx_state *state = tevent_req_data(
+ req, struct cli_write_andx_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+ *pwritten = state->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 tevent_req *req);
+
+static struct tevent_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 tevent_req *req, *subreq;
+ struct cli_writeall_state *state;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_writeall_state);
+ if (req == NULL) {
+ 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 (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, cli_writeall_written, req);
+ return req;
+}
+
+static void cli_writeall_written(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_writeall_state *state = tevent_req_data(
+ req, 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)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+
+ state->written += written;
+
+ if (state->written > state->size) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+ return;
+ }
+
+ to_write = state->size - state->written;
+
+ if (to_write == 0) {
+ tevent_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 (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cli_writeall_written, req);
+}
+
+static NTSTATUS cli_writeall_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+struct cli_push_write_state {
+ struct tevent_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 tevent_req *req);
+
+static bool cli_push_write_setup(struct tevent_req *req,
+ struct cli_push_state *state,
+ uint32_t idx)
+{
+ struct cli_push_write_state *substate;
+ struct tevent_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;
+ }
+ tevent_req_set_callback(subreq, cli_push_written, substate);
+
+ state->reqs[idx] = substate;
+ state->pending += 1;
+ state->next_offset += substate->size;
+
+ return true;
+}
+
+struct tevent_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 tevent_req *req;
+ struct cli_push_state *state;
+ uint32_t i;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_push_state);
+ if (req == NULL) {
+ 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) {
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ return req;
+
+ failed:
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return tevent_req_post(req, ev);
+}
+
+static void cli_push_written(struct tevent_req *subreq)
+{
+ struct cli_push_write_state *substate = tevent_req_callback_data(
+ subreq, struct cli_push_write_state);
+ struct tevent_req *req = substate->req;
+ struct cli_push_state *state = tevent_req_data(
+ req, 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)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+
+ if (!state->eof) {
+ if (!cli_push_write_setup(req, state, idx)) {
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+ }
+
+ if (state->pending == 0) {
+ tevent_req_done(req);
+ return;
+ }
+}
+
+NTSTATUS cli_push_recv(struct tevent_req *req)
+{
+ return tevent_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 tevent_req *req;
+ NTSTATUS status = NT_STATUS_OK;
+
+ if (cli_has_async_calls(cli)) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+
+ ev = event_context_init(frame);
+ if (ev == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
+
+ req = cli_push_send(frame, ev, cli, fnum, mode, start_offset,
+ window_size, source, priv);
+ if (req == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
+
+ if (!tevent_req_poll(req, ev)) {
+ status = map_nt_error_from_unix(errno);
+ goto fail;
+ }
+
+ status = cli_push_recv(req);
+ fail:
+ TALLOC_FREE(frame);
+ if (!NT_STATUS_IS_OK(status)) {
+ cli_set_error(cli, status);
+ }
+ return status;
+}
git.samba.org / samba.git / blobdiff