smi_node(3) SMI Management Information Library smi_node(3)NAME
smiGetNode, smiGetNodeByOID, smiGetFirstNode, smiGetNextNode, smiGet‐
ParentNode, smiGetRelatedNode, smiGetFirstChildNode, smiGet‐
NextChildNode, smiGetNodeModule, smiGetNodeType, smiGetNodeLine,
smiGetFirstElement, smiGetNextElement, smiGetElementNode, smiGet‐
FirstOption, 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 *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 identi‐
fier oid[] with the length oidlen. If no such node is not found,
smiGetNodeByOID() returns NULL.
The smiGetFirstNode() and smiGetNextNode() functions are used to itera‐
tively 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 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 smiGet‐
FirstChildNode() 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 colum‐
nar) 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 state‐
ments. The node to which the list belongs has to be specified by smiN‐
odePtr. To retrieve the node that is represented by a struct SmiEle‐
ment, 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 state‐
ment specified by smiComplianceNodePtr. The group node which is subject
of such a statement can be retrieved by the smiGetOptionNode() func‐
tion.
Similarly, the smiGetFirstRefinement() and smiGetNextRefinement() func‐
tions are used to iteratively retrieve struct SmiRefinements that rep‐
resent 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 smiGetRefinementWrite‐
Type() 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 ALSOlibsmi(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>
IBR March 30, 2004 smi_node(3)
