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/*
Unix SMB/CIFS implementation.
CTDB Packet handling
Copyright (C) Volker Lendecke 2007
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* A ctdb_packet context is a wrapper around a bidirectional file descriptor,
* hiding the handling of individual requests.
*/
struct ctdb_packet_context;
/*
* Initialize a ctdb_packet context. The fd is given to the ctdb_packet context, meaning
* that it is automatically closed when the ctdb_packet context is freed.
*/
struct ctdb_packet_context *ctdb_packet_init(TALLOC_CTX *mem_ctx, int fd);
/*
* Pull data from the fd
*/
NTSTATUS ctdb_packet_fd_read(struct ctdb_packet_context *ctx);
/*
* Sync read, wait for the next chunk
*/
NTSTATUS ctdb_packet_fd_read_sync_timeout(struct ctdb_packet_context *ctx, int timeout);
/*
* Handle an incoming ctdb_packet:
* Return False if none is available
* Otherwise return True and store the callback result in *status
* Callback must either talloc_move or talloc_free buf
*/
bool ctdb_packet_handler(struct ctdb_packet_context *ctx,
bool (*full_req)(const uint8_t *buf,
size_t available,
size_t *length,
void *private_data),
NTSTATUS (*callback)(uint8_t *buf, size_t length,
void *private_data),
void *private_data,
NTSTATUS *status);
/*
* How many bytes of outgoing data do we have pending?
*/
size_t ctdb_packet_outgoing_bytes(struct ctdb_packet_context *ctx);
/*
* Push data to the fd
*/
NTSTATUS ctdb_packet_fd_write(struct ctdb_packet_context *ctx);
/*
* Sync flush all outgoing bytes
*/
NTSTATUS ctdb_packet_flush(struct ctdb_packet_context *ctx);
/*
* Send a list of DATA_BLOBs
*
* Example: ctdb_packet_send(ctx, 2, data_blob_const(&size, sizeof(size)),
* data_blob_const(buf, size));
*/
NTSTATUS ctdb_packet_send(struct ctdb_packet_context *ctx, int num_blobs, ...);
/*
* Get the ctdb_packet context's file descriptor
*/
int ctdb_packet_get_fd(struct ctdb_packet_context *ctx);
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