/usr/include/libbson-1.0/bson-reader.h is in libbson-dev 1.9.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 2013 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef BSON_READER_H
#define BSON_READER_H
#if !defined(BSON_INSIDE) && !defined(BSON_COMPILATION)
#error "Only <bson.h> can be included directly."
#endif
#include "bson-compat.h"
#include "bson-oid.h"
#include "bson-types.h"
BSON_BEGIN_DECLS
#define BSON_ERROR_READER_BADFD 1
/*
*--------------------------------------------------------------------------
*
* bson_reader_read_func_t --
*
* This function is a callback used by bson_reader_t to read the
* next chunk of data from the underlying opaque file descriptor.
*
* This function is meant to operate similar to the read() function
* as part of libc on UNIX-like systems.
*
* Parameters:
* @handle: The handle to read from.
* @buf: The buffer to read into.
* @count: The number of bytes to read.
*
* Returns:
* 0 for end of stream.
* -1 for read failure.
* Greater than zero for number of bytes read into @buf.
*
* Side effects:
* None.
*
*--------------------------------------------------------------------------
*/
typedef ssize_t (*bson_reader_read_func_t) (void *handle, /* IN */
void *buf, /* IN */
size_t count); /* IN */
/*
*--------------------------------------------------------------------------
*
* bson_reader_destroy_func_t --
*
* Destroy callback to release any resources associated with the
* opaque handle.
*
* Parameters:
* @handle: the handle provided to bson_reader_new_from_handle().
*
* Returns:
* None.
*
* Side effects:
* None.
*
*--------------------------------------------------------------------------
*/
typedef void (*bson_reader_destroy_func_t) (void *handle); /* IN */
BSON_EXPORT (bson_reader_t *)
bson_reader_new_from_handle (void *handle,
bson_reader_read_func_t rf,
bson_reader_destroy_func_t df);
BSON_EXPORT (bson_reader_t *)
bson_reader_new_from_fd (int fd, bool close_on_destroy);
BSON_EXPORT (bson_reader_t *)
bson_reader_new_from_file (const char *path, bson_error_t *error);
BSON_EXPORT (bson_reader_t *)
bson_reader_new_from_data (const uint8_t *data, size_t length);
BSON_EXPORT (void)
bson_reader_destroy (bson_reader_t *reader);
BSON_EXPORT (void)
bson_reader_set_read_func (bson_reader_t *reader, bson_reader_read_func_t func);
BSON_EXPORT (void)
bson_reader_set_destroy_func (bson_reader_t *reader,
bson_reader_destroy_func_t func);
BSON_EXPORT (const bson_t *)
bson_reader_read (bson_reader_t *reader, bool *reached_eof);
BSON_EXPORT (off_t)
bson_reader_tell (bson_reader_t *reader);
BSON_EXPORT (void)
bson_reader_reset (bson_reader_t *reader);
BSON_END_DECLS
#endif /* BSON_READER_H */
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