SNMP Subagent Programmer's Guide

Dynamic Directory Program
2-50 119728—SNMP Subagent Programmer’s Guide
Programming Tutorials
Example 2-10. Dynamic Directory Main Program and Next and Locator
Functions (page 1 of 4)
#include "tdmporth"
#include "machtypH"
#include "syspubH"
#include "errnoH"
<-- 1
#include "mgmtpubH"
#include "dirH"
/*
* The SMI compiler output must be included after all
* the attribute data structures have been defined since
* this output will make reference to these structures.
*/
#pragma nowarn (93)
#include "dynamlsH"
#pragma warn (93)
/*****************************************************************************
* safe_malloc Allocate a chunk of memory. Cause the program
****************************************************************************/
Void *
safe_malloc(register int size)
...
{
register Void *data;
data = (Void *) malloc(size);
if (data == NULL)
{
(void) fprintf(stderr, "malloc failure\n");
exit(1);
}
return(data);
}
/*****************************************************************************
* main Main routine for the dynamic directory
****************************************************************************/
int
main(int argc,
char **argv)
...
{
struct directory *dir;
Void *mgmt_env;
Void *group_handle;
Void *row_handle;
short dummy = 0;
/*
* make sure we were invoked nicely
*/
if (argc != 2)
{
(void) fprintf(stderr, "Usage: run %s: $<agent> \n", argv[0]);
return(1);
}
/*
* initialize context structure
*/
dir = (struct directory *)safe_malloc(sizeof(*dir));
dir->dir_name.val = (ubyte *)safe_malloc(MAX_dirName + 1);
(void) strcpy((char *) dir->dir_name.val, "zsnmpsdk");
<-- 2
dir->dir_name.len = strlen((char *)dir->dir_name.val);
dir->files = NULL;
/*
* Initialize the session with the SMUX agent.
*/
mgmt_env = mgmt_init_env(argv[1], (ObjId_t *) &GI_dir,
<-- 3
"Dynamic File Lister", NULL, NULL);