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/*
* memory_netbsd1.c
*/
#include <net-snmp/net-snmp-config.h>
/*
* Ripped from /usr/scr/usr.bin/vmstat/vmstat.c (covering all bases)
*/
#include <sys/param.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/dkstat.h>
#include <sys/buf.h>
#include <sys/uio.h>
#include <sys/namei.h>
#include <sys/malloc.h>
#include <sys/signal.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>
#if defined(HAVE_UVM_UVM_PARAM_H) && defined(HAVE_UVM_UVM_EXTERN_H)
#include <uvm/uvm_param.h>
#include <uvm/uvm_extern.h>
#elif defined(HAVE_VM_VM_PARAM_H) && defined(HAVE_VM_VM_EXTERN_H)
#include <vm/vm_param.h>
#include <vm/vm_extern.h>
#else
#error memory_netbsd1.c: Is this really a NetBSD system?
#endif
#include <time.h>
#include <nlist.h>
#include <kvm.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
#include <limits.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 "util_funcs/header_generic.h"
#include "memory.h"
#include "memory_netbsd1.h"
/*
* Default swap warning limit (kb)
*/
#define DEFAULTMINIMUMSWAP 16000
/*
* Swap warning limit
*/
long minimumswap;
/*
* Swap info
*/
quad_t swapTotal;
quad_t swapUsed;
quad_t swapFree;
static FindVarMethod var_extensible_mem;
void
init_memory_netbsd1(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");
}
void
memory_parse_config(const char *token, char *cptr)
{
minimumswap = atoi(cptr);
}
void
memory_free_config(void)
{
minimumswap = DEFAULTMINIMUMSWAP;
}
/*
* var_extensible_mem(...
* Arguments:
* vp IN - pointer to variable entry that points here
* name IN/OUT - IN/name requested, OUT/name found
* length IN/OUT - length of IN/OUT oid's
* exact IN - TRUE if an exact match was requested
* var_len OUT - length of variable or 0 if function returned
* write_method
*
*/
static
unsigned char *
var_extensible_mem(struct variable *vp,
oid * name,
size_t * length,
int exact,
size_t * var_len, WriteMethod ** write_method)
{
static long long_ret;
static char errmsg[1024];
static struct uvmexp uvmexp;
int uvmexp_size = sizeof(uvmexp);
int uvmexp_mib[] = { CTL_VM, VM_UVMEXP };
static struct vmtotal total;
size_t total_size = sizeof(total);
int total_mib[] = { CTL_VM, VM_METER };
long phys_mem;
size_t phys_mem_size = sizeof(phys_mem);
int phys_mem_mib[] = { CTL_HW, HW_PHYSMEM };
if (header_generic(vp, name, length, exact, var_len, write_method))
return (NULL);
/*
* Memory info
*/
sysctl(uvmexp_mib, 2, &uvmexp, &uvmexp_size, NULL, 0);
sysctl(total_mib, 2, &total, &total_size, NULL, 0);
/*
* Physical memory
*/
sysctl(phys_mem_mib, 2, &phys_mem, &phys_mem_size, NULL, 0);
long_ret = 0; /* set to 0 as default */
/*
* Page-to-kb macro
*/
#define ptok(p) ((p) * (uvmexp.pagesize >> 10))
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:
long_ret = ptok(uvmexp.swpages);
return ((u_char *) (&long_ret));
case MEMAVAILSWAP: /* FREE swap memory */
long_ret = ptok(uvmexp.swpages - uvmexp.swpginuse);
return ((u_char *) (&long_ret));
case MEMTOTALREAL:
long_ret = phys_mem >> 10;
return ((u_char *) (&long_ret));
case MEMAVAILREAL: /* FREE real memory */
long_ret = ptok(uvmexp.free);
return ((u_char *) (&long_ret));
/*
* these are not implemented
*/
case MEMTOTALSWAPTXT:
case MEMUSEDSWAPTXT:
case MEMTOTALREALTXT:
case MEMUSEDREALTXT:
#if NETSNMP_NO_DUMMY_VALUES
return NULL;
#endif
long_ret = -1;
return ((u_char *) (&long_ret));
case MEMTOTALFREE:
long_ret = ptok((int) total.t_free);
return ((u_char *) (&long_ret));
case MEMSWAPMINIMUM:
long_ret = minimumswap;
return ((u_char *) (&long_ret));
case MEMSHARED:
return ((u_char *) (&long_ret));
case MEMBUFFER:
return NULL;
case MEMCACHED:
return NULL;
case ERRORFLAG:
long_ret = (swapFree > minimumswap) ? 0 : 1;
return ((u_char *) (&long_ret));
case ERRORMSG:
if (swapFree < minimumswap)
sprintf(errmsg, "Running out of swap space (%qd)", swapFree);
else
errmsg[0] = 0;
*var_len = strlen(errmsg);
return ((u_char *) (errmsg));
}
return NULL;
}
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