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samba-mirror/librpc/ndr/ndr_compression.h
Andrew Bartlett 963688b3a5 librpc: Always call ndr_push_compression_state_init() for compression
This allows the push routine to cache the chosen compression algorithm in
the struct ndr_compression_state in ndr->cstate and so, in claims, avoid
calling ndr_size_CLAIMS_SET_NDR() three times per compression (more in the
overall push).

As claims is now the primary use of the libndr compression code, this is
a reasonable tradeoff compared to the other callers who have more static
algorithm selections.

By removing the struct ndr_compression_state **state argument from
ndr_push_compression_state_init() we make clear that the ndr->cstate
belongs to this NDR context, and this context alone.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
2023-05-05 02:54:30 +00:00

61 lines
2.2 KiB
C

/*
Unix SMB/CIFS implementation.
libndr compression support
Copyright (C) Stefan Metzmacher 2005
Copyright (C) Matthieu Suiche 2008
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/>.
*/
#ifndef __LIBRPC_NDR_NDR_COMPRESSION_H__
#define __LIBRPC_NDR_NDR_COMPRESSION_H__
#undef _PRINTF_ATTRIBUTE
#define _PRINTF_ATTRIBUTE(a1, a2) PRINTF_ATTRIBUTE(a1, a2)
/* this file contains prototypes for functions that are private
* to this subsystem or library. These functions should not be
* used outside this particular subsystem! */
/* The following definitions come from librpc/ndr/ndr_compression.c */
enum ndr_err_code ndr_pull_compression_start(struct ndr_pull *subndr,
struct ndr_pull **_comndr,
enum ndr_compression_alg compression_alg,
ssize_t decompressed_len,
ssize_t compressed_len);
enum ndr_err_code ndr_pull_compression_end(struct ndr_pull *subndr,
struct ndr_pull *comndr,
enum ndr_compression_alg compression_alg,
ssize_t decompressed_len);
enum ndr_err_code ndr_push_compression_start(struct ndr_push *subndr,
struct ndr_push **_uncomndr);
enum ndr_err_code ndr_push_compression_end(struct ndr_push *subndr,
struct ndr_push *uncomndr);
enum ndr_err_code ndr_pull_compression_state_init(struct ndr_pull *ndr,
enum ndr_compression_alg compression_alg,
struct ndr_compression_state **state);
void ndr_pull_compression_state_free(struct ndr_compression_state *state);
enum ndr_err_code ndr_push_compression_state_init(struct ndr_push *ndr,
enum ndr_compression_alg compression_alg);
#undef _PRINTF_ATTRIBUTE
#define _PRINTF_ATTRIBUTE(a1, a2)
#endif /* __LIBRPC_NDR_NDR_COMPRESSION_H__ */