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      1 /*
      2  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
      3  * Use is subject to license terms.
      4  */
      5 
      6 /*
      7  * BSD 3 Clause License
      8  *
      9  * Copyright (c) 2007, The Storage Networking Industry Association.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 	- Redistributions of source code must retain the above copyright
     15  *	  notice, this list of conditions and the following disclaimer.
     16  *
     17  * 	- Redistributions in binary form must reproduce the above copyright
     18  *	  notice, this list of conditions and the following disclaimer in
     19  *	  the documentation and/or other materials provided with the
     20  *	  distribution.
     21  *
     22  *	- Neither the name of The Storage Networking Industry Association (SNIA)
     23  *	  nor the names of its contributors may be used to endorse or promote
     24  *	  products derived from this software without specific prior written
     25  *	  permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     28  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     31  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 /*
     41  * Interface definition for the list based stack class. The stack only
     42  * holds pointers/references to application objects. The objects are not
     43  * copied and the stack never attempts to dereference or access the data
     44  * objects. Applications should treat cstack_t references as opaque
     45  * handles.
     46  */
     47 
     48 #ifndef _CSTACK_H_
     49 #define	_CSTACK_H_
     50 
     51 
     52 #ifdef __cplusplus
     53 extern "C" {
     54 #endif
     55 
     56 
     57 typedef struct cstack {
     58 	struct cstack *next;
     59 	void *data;
     60 	int len;
     61 } cstack_t;
     62 
     63 
     64 cstack_t *cstack_new(void);
     65 void cstack_delete(cstack_t *);
     66 int cstack_push(cstack_t *, void *, int);
     67 int cstack_pop(cstack_t *, void **, int *);
     68 int cstack_top(cstack_t *, void **, int *);
     69 
     70 
     71 #ifdef __cplusplus
     72 }
     73 #endif
     74 
     75 
     76 #endif /* _CSTACK_H_ */
     77