*/
#include "includes.h"
+#include "libsmb/libsmb.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "async_smb.h"
+#include "trans2.h"
/****************************************************************************
Calculate the recommended read buffer size
****************************************************************************/
static size_t cli_read_max_bufsize(struct cli_state *cli)
{
+ size_t data_offset = smb_size - 4;
+ size_t wct = 12;
+
+ size_t useable_space;
+
if (!client_is_signing_on(cli) && !cli_encryption_on(cli)
&& (cli->server_posix_capabilities & CIFS_UNIX_LARGE_READ_CAP)) {
return CLI_SAMBA_MAX_POSIX_LARGE_READX_SIZE;
? CLI_SAMBA_MAX_LARGE_READX_SIZE
: CLI_WINDOWS_MAX_LARGE_READX_SIZE;
}
- return (cli->max_xmit - (smb_size+32)) & ~1023;
+
+ data_offset += wct * sizeof(uint16_t);
+ data_offset += 1; /* pad */
+
+ useable_space = cli->max_xmit - data_offset;
+
+ return useable_space;
}
/****************************************************************************
Calculate the recommended write buffer size
****************************************************************************/
-static size_t cli_write_max_bufsize(struct cli_state *cli, uint16_t write_mode)
+static size_t cli_write_max_bufsize(struct cli_state *cli,
+ uint16_t write_mode,
+ uint8_t wct)
{
if (write_mode == 0 &&
!client_is_signing_on(cli) &&
if (((cli->capabilities & CAP_LARGE_WRITEX) == 0)
|| client_is_signing_on(cli)
|| strequal(cli->dev, "LPT1:")) {
+ size_t data_offset = smb_size - 4;
+ size_t useable_space;
- /*
- * Printer devices are restricted to max_xmit writesize in
- * Vista and XPSP3 as are signing connections.
- */
+ data_offset += wct * sizeof(uint16_t);
+ data_offset += 1; /* pad */
- return (cli->max_xmit - (smb_size+32)) & ~1023;
+ useable_space = cli->max_xmit - data_offset;
+
+ return useable_space;
}
return CLI_WINDOWS_MAX_LARGE_WRITEX_SIZE;
}
status = cli_smb_req_send(subreq);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
+ if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
}
return req;
return;
}
- state->buf = (uint8_t *)smb_base(inbuf) + SVAL(vwv+6, 0);
+ state->buf = discard_const_p(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))) {
NTSTATUS status;
status = cli_read_andx_recv(subreq, &received, &buf);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
+ if (tevent_req_nterror(req, status)) {
return;
}
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 cli_pull_subreq,
+ state->reqs = talloc_zero_array(state, struct cli_pull_subreq,
state->num_reqs);
if (state->reqs == NULL) {
goto failed;
status = state->sink((char *)top_subreq->buf,
top_subreq->received, state->priv);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(state->req, status);
+ if (tevent_req_nterror(state->req, status)) {
return;
}
state->pushed += top_subreq->received;
status = cli_pull_recv(req, received);
fail:
TALLOC_FREE(frame);
- if (!NT_STATUS_IS_OK(status)) {
- cli_set_error(cli, status);
- }
return status;
}
status = cli_pull(cli, fnum, offset, size, size,
cli_read_sink, &buf, &ret);
if (!NT_STATUS_IS_OK(status)) {
- cli_set_error(cli, status);
return -1;
}
return ret;
}
/****************************************************************************
- Issue a single SMBwrite and don't wait for a reply.
+ write to a file using a SMBwrite and not bypassing 0 byte writes
****************************************************************************/
-static bool cli_issue_write(struct cli_state *cli,
- uint16_t fnum,
- off_t offset,
- uint16 mode,
- const char *buf,
- size_t size,
- int i)
+NTSTATUS cli_smbwrite(struct cli_state *cli, uint16_t fnum, char *buf,
+ off_t offset, size_t size1, size_t *ptotal)
{
- char *p;
- bool large_writex = false;
- /* We can only do direct writes if not signing and not encrypting. */
- bool direct_writes = !client_is_signing_on(cli) && !cli_encryption_on(cli);
-
- if (!direct_writes && size + 1 > cli->bufsize) {
- cli->outbuf = (char *)SMB_REALLOC(cli->outbuf, size + 1024);
- if (!cli->outbuf) {
- return False;
- }
- cli->inbuf = (char *)SMB_REALLOC(cli->inbuf, size + 1024);
- if (cli->inbuf == NULL) {
- SAFE_FREE(cli->outbuf);
- return False;
- }
- cli->bufsize = size + 1024;
- }
-
- memset(cli->outbuf,'\0',smb_size);
- memset(cli->inbuf,'\0',smb_size);
-
- if (cli->capabilities & CAP_LARGE_FILES) {
- large_writex = True;
- }
-
- if (large_writex) {
- cli_set_message(cli->outbuf,14,0,True);
- } else {
- cli_set_message(cli->outbuf,12,0,True);
- }
-
- SCVAL(cli->outbuf,smb_com,SMBwriteX);
- SSVAL(cli->outbuf,smb_tid,cli->cnum);
- cli_setup_packet(cli);
-
- SCVAL(cli->outbuf,smb_vwv0,0xFF);
- SSVAL(cli->outbuf,smb_vwv2,fnum);
-
- SIVAL(cli->outbuf,smb_vwv3,offset);
- SIVAL(cli->outbuf,smb_vwv5,0);
- SSVAL(cli->outbuf,smb_vwv7,mode);
+ uint8_t *bytes;
+ ssize_t total = 0;
- SSVAL(cli->outbuf,smb_vwv8,(mode & 0x0008) ? size : 0);
/*
- * According to CIFS-TR-1p00, this following field should only
- * be set if CAP_LARGE_WRITEX is set. We should check this
- * locally. However, this check might already have been
- * done by our callers.
+ * 3 bytes prefix
*/
- SSVAL(cli->outbuf,smb_vwv9,(size>>16));
- SSVAL(cli->outbuf,smb_vwv10,size);
- /* +1 is pad byte. */
- SSVAL(cli->outbuf,smb_vwv11,
- smb_buf(cli->outbuf) - smb_base(cli->outbuf) + 1);
- if (large_writex) {
- SIVAL(cli->outbuf,smb_vwv12,(((uint64_t)offset)>>32) & 0xffffffff);
+ bytes = talloc_array(talloc_tos(), uint8_t, 3);
+ if (bytes == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
+ bytes[0] = 1;
- p = smb_base(cli->outbuf) + SVAL(cli->outbuf,smb_vwv11) -1;
- *p++ = '\0'; /* pad byte. */
- if (!direct_writes) {
- memcpy(p, buf, size);
- }
- if (size > 0x1FFFF) {
- /* This is a POSIX 14 word large write. */
- set_message_bcc(cli->outbuf, 0); /* Set bcc to zero. */
- _smb_setlen_large(cli->outbuf,smb_size + 28 + 1 /* pad */ + size - 4);
- } else {
- cli_setup_bcc(cli, p+size);
- }
-
- SSVAL(cli->outbuf,smb_mid,cli->mid + i);
-
- show_msg(cli->outbuf);
- if (direct_writes) {
- /* For direct writes we now need to write the data
- * directly out of buf. */
- return cli_send_smb_direct_writeX(cli, buf, size);
- } else {
- return cli_send_smb(cli);
- }
-}
-
-/****************************************************************************
- write to a file
- write_mode: 0x0001 disallow write cacheing
- 0x0002 return bytes remaining
- 0x0004 use raw named pipe protocol
- 0x0008 start of message mode named pipe protocol
-****************************************************************************/
-
-ssize_t cli_write(struct cli_state *cli,
- uint16_t fnum, uint16 write_mode,
- const char *buf, off_t offset, size_t size)
-{
- ssize_t bwritten = 0;
- unsigned int issued = 0;
- unsigned int received = 0;
- int mpx = 1;
- size_t writesize;
- int blocks;
-
- if(cli->max_mux > 1) {
- mpx = cli->max_mux-1;
- } else {
- mpx = 1;
- }
-
- writesize = cli_write_max_bufsize(cli, write_mode);
-
- blocks = (size + (writesize-1)) / writesize;
-
- while (received < blocks) {
-
- while ((issued - received < mpx) && (issued < blocks)) {
- ssize_t bsent = issued * writesize;
- ssize_t size1 = MIN(writesize, size - bsent);
-
- if (!cli_issue_write(cli, fnum, offset + bsent,
- write_mode,
- buf + bsent,
- size1, issued))
- return -1;
- issued++;
+ do {
+ size_t size = MIN(size1, cli->max_xmit - 48);
+ struct tevent_req *req;
+ uint16_t vwv[5];
+ uint16_t *ret_vwv;
+ NTSTATUS status;
+
+ SSVAL(vwv+0, 0, fnum);
+ SSVAL(vwv+1, 0, size);
+ SIVAL(vwv+2, 0, offset);
+ SSVAL(vwv+4, 0, 0);
+
+ bytes = talloc_realloc(talloc_tos(), bytes, uint8_t,
+ size+3);
+ if (bytes == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
+ SSVAL(bytes, 1, size);
+ memcpy(bytes + 3, buf + total, size);
- if (!cli_receive_smb(cli)) {
- return bwritten;
+ status = cli_smb(talloc_tos(), cli, SMBwrite, 0, 5, vwv,
+ size+3, bytes, &req, 1, NULL, &ret_vwv,
+ NULL, NULL);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(bytes);
+ return status;
}
- received++;
-
- if (cli_is_error(cli))
+ size = SVAL(ret_vwv+0, 0);
+ TALLOC_FREE(req);
+ if (size == 0) {
break;
-
- bwritten += SVAL(cli->inbuf, smb_vwv2);
- if (writesize > 0xFFFF) {
- bwritten += (((int)(SVAL(cli->inbuf, smb_vwv4)))<<16);
}
- }
-
- while (received < issued && cli_receive_smb(cli)) {
- received++;
- }
-
- return bwritten;
-}
-
-/****************************************************************************
- write to a file using a SMBwrite and not bypassing 0 byte writes
-****************************************************************************/
-
-ssize_t cli_smbwrite(struct cli_state *cli,
- uint16_t fnum, char *buf, off_t offset, size_t size1)
-{
- char *p;
- ssize_t total = 0;
-
- do {
- size_t size = MIN(size1, cli->max_xmit - 48);
-
- memset(cli->outbuf,'\0',smb_size);
- memset(cli->inbuf,'\0',smb_size);
-
- cli_set_message(cli->outbuf,5, 0,True);
-
- SCVAL(cli->outbuf,smb_com,SMBwrite);
- SSVAL(cli->outbuf,smb_tid,cli->cnum);
- cli_setup_packet(cli);
-
- SSVAL(cli->outbuf,smb_vwv0,fnum);
- SSVAL(cli->outbuf,smb_vwv1,size);
- SIVAL(cli->outbuf,smb_vwv2,offset);
- SSVAL(cli->outbuf,smb_vwv4,0);
-
- p = smb_buf(cli->outbuf);
- *p++ = 1;
- SSVAL(p, 0, size); p += 2;
- memcpy(p, buf + total, size); p += size;
-
- cli_setup_bcc(cli, p);
-
- if (!cli_send_smb(cli))
- return -1;
-
- if (!cli_receive_smb(cli))
- return -1;
-
- if (cli_is_error(cli))
- return -1;
-
- size = SVAL(cli->inbuf,smb_vwv0);
- if (size == 0)
- break;
-
size1 -= size;
total += size;
offset += size;
} while (size1);
- return total;
+ TALLOC_FREE(bytes);
+
+ if (ptotal != NULL) {
+ *ptotal = total;
+ }
+ return NT_STATUS_OK;
}
/*
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);
+ size_t max_write = cli_write_max_bufsize(cli, mode, wct);
uint16_t *vwv;
req = tevent_req_create(mem_ctx, &state, struct cli_write_andx_state);
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_base = discard_const_p(void, buf);
state->iov[1].iov_len = size;
subreq = cli_smb_req_create(state, ev, cli, SMBwriteX, 0, wct, vwv,
}
status = cli_smb_req_send(subreq);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
+ if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
}
return req;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
- *pwritten = state->written;
+ if (pwritten != 0) {
+ *pwritten = state->written;
+ }
return NT_STATUS_OK;
}
status = cli_write_andx_recv(subreq, &written);
TALLOC_FREE(subreq);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
+ if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_set_callback(subreq, cli_writeall_written, req);
}
-static NTSTATUS cli_writeall_recv(struct tevent_req *req)
+static NTSTATUS cli_writeall_recv(struct tevent_req *req,
+ size_t *pwritten)
{
- return tevent_req_simple_recv_ntstatus(req);
+ struct cli_writeall_state *state = tevent_req_data(
+ req, struct cli_writeall_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+ if (pwritten != NULL) {
+ *pwritten = state->written;
+ }
+ return NT_STATUS_OK;
+}
+
+NTSTATUS cli_writeall(struct cli_state *cli, uint16_t fnum, uint16_t mode,
+ const uint8_t *buf, off_t offset, size_t size,
+ size_t *pwritten)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct event_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+ 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) {
+ goto fail;
+ }
+ req = cli_writeall_send(frame, ev, cli, fnum, mode, buf, offset, size);
+ if (req == NULL) {
+ goto fail;
+ }
+ if (!tevent_req_poll(req, ev)) {
+ status = map_nt_error_from_unix(errno);
+ goto fail;
+ }
+ status = cli_writeall_recv(req, pwritten);
+ fail:
+ TALLOC_FREE(frame);
+ return status;
}
struct cli_push_write_state {
state->pending = 0;
state->next_offset = start_offset;
- state->chunk_size = cli_write_max_bufsize(cli, mode);
+ state->chunk_size = cli_write_max_bufsize(cli, mode, 14);
if (window_size == 0) {
window_size = cli->max_mux * state->chunk_size;
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->reqs = talloc_zero_array(state, struct cli_push_write_state *,
state->num_reqs);
if (state->reqs == NULL) {
goto failed;
state->reqs[idx] = NULL;
state->pending -= 1;
- status = cli_writeall_recv(subreq);
+ status = cli_writeall_recv(subreq, NULL);
TALLOC_FREE(subreq);
TALLOC_FREE(substate);
- if (!NT_STATUS_IS_OK(status)) {
- tevent_req_nterror(req, status);
+ if (tevent_req_nterror(req, status)) {
return;
}
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 / kai / samba.git / blobdiff