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/*
* Copyright (c) 2025 Ian Marco Moffett and L5 engineers
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _OS_NS_H_
#define _OS_NS_H_
#include <sys/types.h>
struct ns_obj;
typedef uint8_t ns_t;
/*
* Initializes an object into a known state so that
* further operations can be performed
*
* @nsop: Newly created object to be initialized
*
* Returns a value of zero on success, otherwise a less
* than zero value upon failure.
*/
int ns_obj_init(struct ns_obj *nsop);
/*
* Place an object into the namespace
*
* @ns: ID of the namespace to enter object
* @obj: Object that we want to enter
* @name: Name of the object
*
* Returns zero on success, otherwise a less than
* zero value on failure
*/
int ns_obj_enter(ns_t ns, void *obj, const char *name);
/*
* Find an object within a namespace
*
* @ns: ID of namespace to lookup
* @name: Name of object we want to find
* @res_p: Pointer of result pointer to store
*
* Returns zero on success, otherwise a less than
* zero value on failure.
*/
int ns_obj_lookup(ns_t ns, const char *name, void *res_p);
/*
* Unifies the buffer / callback interface into a single
* function, used to read an object's data into a buffer
* by length.
*
* @nsop: Object to read from
* @buf: Buffer to read into
* @off: Offset to read at
* @len: Length of bytes to read
*
* Returns the length of the data read on success, otherwise
* a less than zero value upon failure.
*/
ssize_t ns_obj_read(struct ns_obj *nsop, void *buf, off_t off, size_t len);
#endif /* !_OS_NS_H_ */
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