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#include <net-snmp/net-snmp-config.h>
#if HAVE_STRING_H
#include <string.h>
#endif
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <sys/types.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/auto_nlist.h>
#include "memory.h" /* the module-specific header */
#include "memory_hpux.h" /* the module-specific header */
#include <sys/pstat.h>
#define MAXSTRSIZE 80
#define DEFAULTMINIMUMSWAP 16000 /* kilobytes */
int minimumswap;
static char errmsg[1024];
static FindVarMethod var_extensible_mem;
static long getFreeSwap(void);
static long getTotalFree(void);
static long getTotalSwap(void);
struct swapinfo {
unsigned long total_swap; /* in kilobytes */
unsigned long free_swap; /* in kilobytes */
};
void
memory_parse_config(const char *token, char *cptr)
{
minimumswap = atoi(cptr);
}
void
memory_free_config(void)
{
minimumswap = DEFAULTMINIMUMSWAP;
}
void
init_memory_hpux(void)
{
struct variable2 extensible_mem_variables[] = {
{MIBINDEX, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MIBINDEX}},
{ERRORNAME, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {ERRORNAME}},
{MEMTOTALSWAP, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMTOTALSWAP}},
{MEMAVAILSWAP, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMAVAILSWAP}},
{MEMTOTALREAL, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMTOTALREAL}},
{MEMAVAILREAL, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMAVAILREAL}},
{MEMTOTALSWAPTXT, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMTOTALSWAPTXT}},
{MEMUSEDSWAPTXT, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMUSEDSWAPTXT}},
{MEMTOTALREALTXT, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMTOTALREALTXT}},
{MEMUSEDREALTXT, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMUSEDREALTXT}},
{MEMTOTALFREE, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMTOTALFREE}},
{MEMSWAPMINIMUM, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMSWAPMINIMUM}},
{MEMSHARED, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMSHARED}},
{MEMBUFFER, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMBUFFER}},
{MEMCACHED, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {MEMCACHED}},
{ERRORFLAG, ASN_INTEGER, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {ERRORFLAG}},
{ERRORMSG, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY,
var_extensible_mem, 1, {ERRORMSG}}
};
/*
* Define the OID pointer to the top of the mib tree that we're
* registering underneath
*/
oid mem_variables_oid[] = { NETSNMP_UCDAVIS_MIB, NETSNMP_MEMMIBNUM };
/*
* register ourselves with the agent to handle our mib tree
*/
REGISTER_MIB("ucd-snmp/memory", extensible_mem_variables, variable2,
mem_variables_oid);
snmpd_register_config_handler("swap", memory_parse_config,
memory_free_config, "min-avail");
} /* end init_hpux */
static int
get_swapinfo(struct swapinfo *swap)
{
struct pst_swapinfo pss;
int i = 0;
while (pstat_getswap(&pss, sizeof(pss), (size_t) 1, i) != -1) {
if (pss.pss_idx == (unsigned) i) {
swap->total_swap += pss.pss_nblksenabled;
swap->free_swap += 4 * pss.pss_nfpgs; /* nfpgs is in 4-byte blocks - who knows why? */
i++;
} else
return;
}
} /* end get_swapinfo */
static u_char *
var_extensible_mem(struct variable *vp,
oid * name,
size_t * length,
int exact,
size_t * var_len, WriteMethod ** write_method)
{
struct swapinfo swap;
struct pst_static pst;
struct pst_dynamic psd;
static long long_ret;
/*
* Initialize the return value to 0
*/
long_ret = 0;
swap.total_swap = 0;
swap.free_swap = 0;
if (header_generic(vp, name, length, exact, var_len, write_method))
return (NULL);
switch (vp->magic) {
case MIBINDEX:
long_ret = 0;
return ((u_char *) (&long_ret));
case ERRORNAME: /* dummy name */
sprintf(errmsg, "swap");
*var_len = strlen(errmsg);
return ((u_char *) (errmsg));
case MEMTOTALSWAP:
get_swapinfo(&swap);
long_ret = swap.total_swap;
return ((u_char *) (&long_ret));
case MEMAVAILSWAP:
get_swapinfo(&swap);
long_ret = swap.free_swap;
return ((u_char *) (&long_ret));
case MEMSWAPMINIMUM:
long_ret = minimumswap;
return ((u_char *) (&long_ret));
case MEMTOTALREAL:
/*
* Retrieve the static memory statistics
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return (NULL);
}
long_ret = pst.page_size / 1024 * pst.physical_memory;
return ((u_char *) (&long_ret));
case MEMAVAILREAL:
/*
* Retrieve the static memory statistics
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return (NULL);
}
/*
* Retrieve the dynamic memory statistics
*/
if (pstat_getdynamic(&psd, sizeof(psd), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getdynamic failed!\n");
return (NULL);
}
long_ret = pst.page_size / 1024 * psd.psd_free;
return ((u_char *) (&long_ret));
case MEMTOTALSWAPTXT:
/*
* Retrieve the static memory statistics
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return (NULL);
}
/*
* Retrieve the dynamic memory statistics
*/
if (pstat_getdynamic(&psd, sizeof(psd), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getdynamic failed!\n");
return (NULL);
}
long_ret = pst.page_size / 1024 * psd.psd_vmtxt;
return ((u_char *) (&long_ret));
case MEMUSEDSWAPTXT:
/*
* Retrieve the static memory statistics
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return (NULL);
}
/*
* Retrieve the dynamic memory statistics
*/
if (pstat_getdynamic(&psd, sizeof(psd), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getdynamic failed!\n");
return (NULL);
}
long_ret = pst.page_size / 1024 * (psd.psd_vmtxt - psd.psd_avmtxt);
return ((u_char *) (&long_ret));
case MEMTOTALREALTXT:
/*
* Retrieve the static memory statistics
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return (NULL);
}
/*
* Retrieve the dynamic memory statistics
*/
if (pstat_getdynamic(&psd, sizeof(psd), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getdynamic failed!\n");
return (NULL);
}
long_ret = pst.page_size / 1024 * psd.psd_rmtxt;
return ((u_char *) (&long_ret));
case MEMUSEDREALTXT:
/*
* Retrieve the static memory statistics
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return (NULL);
}
/*
* Retrieve the dynamic memory statistics
*/
if (pstat_getdynamic(&psd, sizeof(psd), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getdynamic failed!\n");
return (NULL);
}
long_ret = pst.page_size / 1024 * (psd.psd_rmtxt - psd.psd_armtxt);
return ((u_char *) (&long_ret));
case MEMTOTALFREE:
/*
* Retrieve the static memory statistics
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return (NULL);
}
/*
* Retrieve the dynamic memory statistics
*/
if (pstat_getdynamic(&psd, sizeof(psd), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getdynamic failed!\n");
return (NULL);
}
get_swapinfo(&swap);
long_ret = (pst.page_size / 1024 * psd.psd_free) + swap.free_swap;
return ((u_char *) (&long_ret));
case ERRORFLAG:
get_swapinfo(&swap);
long_ret = (swap.free_swap > minimumswap) ? 0 : 1;
return ((u_char *) (&long_ret));
case ERRORMSG:
get_swapinfo(&swap);
if ((swap.free_swap > minimumswap) ? 0 : 1)
sprintf(errmsg, "Running out of swap space (%ld)", long_ret);
else
errmsg[0] = 0;
*var_len = strlen(errmsg);
return ((u_char *) (errmsg));
} /* end case */
return (NULL);
}
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