void *
header_hrstoreEntry(struct variable *vp,
oid * name,
size_t * length,
int exact,
size_t * var_len, WriteMethod ** write_method)
{
#define HRSTORE_ENTRY_NAME_LENGTH 11
oid newname[MAX_OID_LEN];
int storage_idx, LowIndex = -1;
int result;
int idx = -1;
netsnmp_memory_info *mem = NULL;
DEBUGMSGTL(("host/hr_storage", "var_hrstoreEntry: request "));
DEBUGMSGOID(("host/hr_storage", name, *length));
DEBUGMSG(("host/hr_storage", " exact=%d\n", exact));
memcpy((char *) newname, (char *) vp->name,
(int) vp->namelen * sizeof(oid));
result = snmp_oid_compare(name, *length, vp->name, vp->namelen);
DEBUGMSGTL(("host/hr_storage", "var_hrstoreEntry: compare "));
DEBUGMSGOID(("host/hr_storage", vp->name, vp->namelen));
DEBUGMSG(("host/hr_storage", " => %d\n", result));
if (result < 0 ||
*length <= HRSTORE_ENTRY_NAME_LENGTH ) {
/*
* Requested OID too early or too short to refer
* to a valid row (for the current column object).
* GET requests should fail, GETNEXT requests
* should use the first row.
*/
if ( exact )
return NULL;
netsnmp_memory_load();
mem = netsnmp_memory_get_first( 0 );
}
else {
/*
* Otherwise, retrieve the requested
* (or following) row as appropriate.
*/
if ( exact && *length > HRSTORE_ENTRY_NAME_LENGTH+1 )
return NULL; /* Too long for a valid instance */
idx = name[ HRSTORE_ENTRY_NAME_LENGTH ];
if ( idx < NETSNMP_MEM_TYPE_MAX ) {
netsnmp_memory_load();
mem = ( exact ? netsnmp_memory_get_byIdx( idx, 0 ) :
netsnmp_memory_get_next_byIdx( idx, 0 ));
}
}
/*
* If this matched a memory-based entry, then
* update the OID parameter(s) for GETNEXT requests.
*/
if ( mem ) {
if ( !exact ) {
newname[ HRSTORE_ENTRY_NAME_LENGTH ] = mem->idx;
memcpy((char *) name, (char *) newname,
((int) vp->namelen + 1) * sizeof(oid));
*length = vp->namelen + 1;
}
}
/*
* If this didn't match a memory-based entry,
* then consider the disk-based storage.
*/
else {
Init_HR_Store();
for (;;) {
storage_idx = Get_Next_HR_Store();
DEBUGMSG(("host/hr_storage", "(index %d ....", storage_idx));
if (storage_idx == -1)
break;
newname[HRSTORE_ENTRY_NAME_LENGTH] = storage_idx;
DEBUGMSGOID(("host/hr_storage", newname, *length));
DEBUGMSG(("host/hr_storage", "\n"));
result = snmp_oid_compare(name, *length, newname, vp->namelen + 1);
if (exact && (result == 0)) {
LowIndex = storage_idx;
/*
* Save storage status information
*/
break;
}
if ((!exact && (result < 0)) &&
(LowIndex == -1 || storage_idx < LowIndex)) {
LowIndex = storage_idx;
/*
* Save storage status information
*/
#ifdef HRSTORE_MONOTONICALLY_INCREASING
break;
#endif
}
}
if ( LowIndex != -1 ) {
if ( !exact ) {
newname[ HRSTORE_ENTRY_NAME_LENGTH ] = LowIndex;
memcpy((char *) name, (char *) newname,
((int) vp->namelen + 1) * sizeof(oid));
*length = vp->namelen + 1;
}
mem = (netsnmp_memory_info*)0xffffffff; /* To indicate 'success' */
}
}
*write_method = (WriteMethod*)0;
*var_len = sizeof(long); /* default to 'long' results */
/*
* ... and return the appropriate row
*/
DEBUGMSGTL(("host/hr_storage", "var_hrstoreEntry: process "));
DEBUGMSGOID(("host/hr_storage", name, *length));
DEBUGMSG(("host/hr_storage", " (%p)\n", mem));
return (void*)mem;
}
int
header_hrstoreEntry(struct variable *vp,
oid * name,
size_t * length,
int exact,
size_t * var_len, WriteMethod ** write_method)
{
#define HRSTORE_ENTRY_NAME_LENGTH 11
oid newname[MAX_OID_LEN];
int storage_idx, LowIndex = -1;
int result;
DEBUGMSGTL(("host/hr_storage", "var_hrstoreEntry: "));
DEBUGMSGOID(("host/hr_storage", name, *length));
DEBUGMSG(("host/hr_storage", " %d\n", exact));
memcpy((char *) newname, (char *) vp->name,
(int) vp->namelen * sizeof(oid));
/*
* Find "next" storage entry
*/
Init_HR_Store();
for (;;) {
storage_idx = Get_Next_HR_Store();
DEBUGMSG(("host/hr_storage", "(index %d ....", storage_idx));
if (storage_idx == -1)
break;
newname[HRSTORE_ENTRY_NAME_LENGTH] = storage_idx;
DEBUGMSGOID(("host/hr_storage", newname, *length));
DEBUGMSG(("host/hr_storage", "\n"));
result = snmp_oid_compare(name, *length, newname, vp->namelen + 1);
if (exact && (result == 0)) {
LowIndex = storage_idx;
/*
* Save storage status information
*/
break;
}
if ((!exact && (result < 0)) &&
(LowIndex == -1 || storage_idx < LowIndex)) {
LowIndex = storage_idx;
/*
* Save storage status information
*/
#ifdef HRSTORE_MONOTONICALLY_INCREASING
break;
#endif
}
}
if (LowIndex == -1) {
DEBUGMSGTL(("host/hr_storage", "... index out of range\n"));
return (MATCH_FAILED);
}
memcpy((char *) name, (char *) newname,
((int) vp->namelen + 1) * sizeof(oid));
*length = vp->namelen + 1;
*write_method = 0;
*var_len = sizeof(long); /* default to 'long' results */
DEBUGMSGTL(("host/hr_storage", "... get storage stats "));
DEBUGMSGOID(("host/hr_storage", name, *length));
DEBUGMSG(("host/hr_storage", "\n"));
return LowIndex;
}
