smi_node(3)

NAME
smiGetNode, smiGetNodeByOID, smiGetFirstNode, smiGetNextNode, smiGetParentNode, smiGetRelatedNode, smiGetFirstChildNode, smiGetNextChildNode, smiGetNodeModule, smiGetNodeType, smiGetNodeLine, smiGetFirstElement, smiGetNextElement, smiGetElementNode, smiGetFirstOption, smiGetNextOption, smiGetOptionNode, smiGetFirstRefinement, smiGetNextRefinement, smiGetRefinementModule, smiGetRefinementNode, smiGetRefinementType, smiGetRefinementWriteType - SMI type information routines

SYNOPSIS
#include <smi.h>

SmiNode *smiGetNode(SmiModule *smiModulePtr, char *node);

SmiNode *smiGetNodeByOID(unsigned int oidlen, SmiSubid oid[]);

SmiNode *smiGetFirstNode(SmiModule *smiModulePtr, SmiNodekind kinds);

SmiNode *smiGetNextNode(SmiNode *smiNodePtr, SmiNodekind kinds);

SmiNode *smiGetFirstAlias(SmiNode *smiNodePtr);

SmiNode *smiGetNextAlias(SmiNode *smiNodePtr);

SmiNode *smiGetParentNode(SmiNode *smiNodePtr);

SmiNode *smiGetRelatedNode(SmiNode *smiNodePtr);

SmiNode *smiGetFirstChildNode(SmiNode *smiNodePtr);

SmiNode *smiGetNextChildNode(SmiNode *smiNodePtr);

SmiModule *smiGetNodeModule(SmiNode *smiNodePtr);

SmiType *smiGetNodeType(SmiNode *smiNodePtr);

int smiGetNodeLine(SmiNode *smiNodePtr);

SmiElement *smiGetFirstElement(SmiNode *smiNodePtr);

SmiElement *smiGetNextElement(SmiElement *smiElementPtr);

SmiNode *smiGetElementNode(SmiElement *smiElementPtr);

SmiOption *smiGetFirstOption(SmiNode *smiComplianceNodePtr);

SmiOption *smiGetNextOption(SmiOption *smiOptionPtr);

SmiNode *smiGetOptionNode(SmiOption *smiOptionPtr);

SmiRefinement *smiGetFirstRefinement(SmiNode *smiComplianceNodePtr);

SmiRefinement *smiGetNextRefinement(SmiRefinement *smiRefinementPtr);

SmiNode *smiGetRefinementNode(SmiRefinement *smiRefinementPtr);

SmiType *smiGetRefinementType(SmiRefinement *smiRefinementPtr);

SmiType *smiGetRefinementWriteType(SmiRefinement *smiRefinementPtr);
typedef struct SmiNode {
    SmiIdentifier       name;
    int                 oidlen;
    SmiSubid            *oid;         /* array of length oidlen */
    SmiDecl             decl;
    SmiAccess           access;
    SmiStatus           status;
    char                *format;
    SmiValue            value;
    char                *units;
    char                *description;
    char                *reference;
    SmiIndexkind        indexkind;
    int                 implied;
    int                 create;
    SmiNodekind         nodekind;
} SmiNode;
typedef struct SmiElement {
    /* no visible attributes */
} SmiElement;
typedef struct SmiOption {
    char                *description;
} SmiOption;
typedef struct SmiRefinement {
    SmiAccess           access;
    char                *description;
} SmiRefinement;

DESCRIPTION
These functions retrieve information on any SMI node definition in the object identifier tree, these are ASN.1 object identifier assignments, MODULE-IDENTITYs, OBJECT-IDENTITYs, OBJECT-TYPEs, NOTIFICATION-TYPEs, TRAP-TYPEs, OBJECT-GROUPs, NOTIFICATION-GROUPs, MODULE-COMPLIANCEs, and AGENT-CAPABILITYs in SMIv1/v2 and node, scalar, table, row, column, notification, group, and compliance statements in SMIng.

The smiGetNode() function retrieves a struct SmiNode that represents a node of any kind. Node may be either a fully qualified descriptor, a simple node name, or a numerical OID. Nodes are also found, if node contains an instance identifier suffix. If smiModulePtr is not NULL it used to limit the search to the given module. If the node is not found, smiGetNode() returns NULL.

The smiGetNodeByOID() function retrieves a struct SmiNode that matches the longest prefix of the node that is specified by the object identifier oid[] with the length oidlen. If no such node is not found, smiGetNodeByOID() returns NULL.

The smiGetFirstNode() and smiGetNextNode() functions are used to iteratively retrieve struct SmiNodes in tree pre-order. smiGetFirstNode() returns the first node defined in the module specified by smiModulePtr that is of any kind specified in the kinds bitset. Subsequent calls to smiGetNextNode() return the next node of any kind specified in the kinds bitset. If there are no more node definitions in the module, NULL is returned.

The smiGetFirstAlias() and smiGetNextAlias() functions are used to iteratively retrieve struct SmiNodes that have the same object identifier as the smiNodePtr given as an argument. There is always one alias node which is the smiNodePtr itself.

The smiGetFirstChildNode() and smiGetNextChildNode() functions are used to iteratively retrieve struct SmiNodes that represent the immediate child nodes of the node specified by smiNodePtr passed to the smiGetFirstChildNode() call.

The smiGetParentNode() function is used to retrieve a struct SmiNodes that represents the parent node of the node specified by smiNodePtr.

The smiGetRelatedNode() function is used to retrieve a struct SmiNodes that is related to the node specified by smiNodePtr. Actually, this is used for SMIv2 table augmentation entries and similar SMIng constructs.

The smiGetNodeModule() function returns the module that defines the node given by struct SmiNodePtr.

The smiGetNodeType() function returns the type of the (scalar or columnar) node given by struct SmiNodePtr. If struct SmiNodePtr does not specify a scalar or columnar node, NULL is returned.

The smiGetFirstElement() and smiGetNextElement() functions are used to iteratively retrieve struct SmiElements that represent elements of index clauses or notification object lists, groups of object types or notification types, and mandatory groups of module compliance statements. The node to which the list belongs has to be specified by smiNodePtr. To retrieve the node that is represented by a struct SmiElement, the smiGetElementNode() function has to be called.

The smiGetFirstOption() and smiGetNextOption() functions are used to iteratively retrieve struct SmiOptions that represent statements on optional (object or notification) groups within the compliance statement specified by smiComplianceNodePtr. The group node which is subject of such a statement can be retrieved by the smiGetOptionNode() function.

Similarly, the smiGetFirstRefinement() and smiGetNextRefinement() functions are used to iteratively retrieve struct SmiRefinements that represent statements on optional object refinements within the compliance statement specified by smiComplianceNodePtr. The node which is subject of such a refinement can be retrieved by the smiGetRefinementNode() function. The optional refined type and write-type of a refinement can be retrieved by the smiGetRefinementType() and smiGetRefinementWriteType() functions. If they are not present, NULL is returned.

The smiGetNodeLine() function returns the line number within the module where the node specified by smiNodePtr is defined.

FILES
${prefix}/include/smi.h    SMI library header file

SEE ALSO
libsmi(3), smi_config(3), smi_type(3), smi_module(3), smi.h

AUTHOR
(C) 1999-2004 Frank Strauss, TU Braunschweig, Germany <strauss@ibr.cs.tu-bs.de>