/*
* If there are multiple swap devices, record
* the statistics for each one individually.
*/
void
swapinfo(long pagesize)
{
int i, n;
struct swapent *s;
netsnmp_memory_info *mem;
char buf[1024];
/*
* If there's only one swap device, don't bother
*/
n = swapctl( SWAP_NSWAP, NULL, 0 );
if ( n <= 1 )
return;
s = (struct swapent*)calloc(n, sizeof(struct swapent));
swapctl( SWAP_STATS, s, n );
for (i = 0; i < n; ++i) {
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP+1+i, 1 );
if (!mem)
continue;
if (!mem->descr) {
/* sprintf(buf, "swap #%d", s[i].se_dev); */
sprintf(buf, "swap %s", s[i].se_path);
mem->descr = strdup( buf );
}
mem->units = pagesize;
mem->size = s[i].se_nblks;
mem->free = s[i].se_nblks - s[i].se_inuse;
mem->other = -1;
}
}
/*
* Retained from UCD implementation
*/
void
get_swapinfo(long *total, long *free, long *size)
{
struct pst_swapinfo pss;
netsnmp_memory_info *mem;
int i = 0;
char buf[1024];
while (pstat_getswap(&pss, sizeof(pss), (size_t) 1, i) != -1) {
if (pss.pss_idx == (unsigned) i) {
/*
* TODO - Skip if only one swap device
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP+1+i, 1 );
if (!mem)
continue;
if (!mem->descr) {
sprintf(buf, "swap #%d %s", i, pss.pss_mntpt);
mem->descr = strdup( buf );
}
mem->units = 1024;
mem->size = (pss.pss_nblksavail * (DEV_BSIZE/512)) / 2; /* Or pss_nblks ? */
mem->free = 4*pss.pss_nfpgs; /* Or pss_nblksavail ? */
mem->other = -1;
*total +=mem->size;
*free +=mem->free;
*size = mem->units; /* Hopefully consistent! */
i++;
} else
return;
}
} /* end get_swapinfo */
int
swapmode(long pagesize)
{
int i, n;
static kvm_t *kd = NULL;
struct kvm_swap kswap[16];
netsnmp_memory_info *mem;
char buf[1024];
if (kd == NULL)
kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
n = kvm_getswapinfo(kd, kswap, sizeof(kswap) / sizeof(kswap[0]), 0);
swapUsed = swapTotal = swapFree = 0;
if ( n > 1 ) {
/*
* If there are multiple swap devices, then record
* the statistics for each one separately...
*/
for (i = 0; i < n; ++i) {
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP+1+i, 1 );
if (!mem)
continue;
if (!mem->descr) {
sprintf(buf, "swap %s", kswap[i].ksw_devname);
mem->descr = strdup( buf );
}
mem->units = pagesize;
mem->size = kswap[i].ksw_total;
mem->free = kswap[i].ksw_total - kswap[i].ksw_used;
/*
* ... and keep a running total for the overall swap stats
*/
swapTotal += kswap[i].ksw_total;
swapUsed += kswap[i].ksw_used;
}
} else {
/*
* If there's only one swap device, then don't bother
* with individual statistics.
*/
swapTotal += kswap[0].ksw_total;
swapUsed += kswap[0].ksw_used;
}
swapFree = swapTotal - swapUsed;
return n;
}
int
handle_memsize(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_memory_info *mem_info;
int val;
/*
* We just need to handle valid GET requests, as invalid instances
* are rejected automatically, and (valid) GETNEXT requests are
* converted into the appropriate GET request.
*
* We also only ever receive one request at a time.
*/
switch (reqinfo->mode) {
case MODE_GET:
netsnmp_memory_load();
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 0 );
if ( !mem_info || mem_info->size == -1 || mem_info->units == -1 )
netsnmp_set_request_error( reqinfo, requests, SNMP_NOSUCHOBJECT );
else {
val = mem_info->size; /* memtotal */
val *= (mem_info->units/1024);
snmp_set_var_typed_value(requests->requestvb, ASN_INTEGER,
(u_char *)&val, sizeof(val));
}
return SNMP_ERR_NOERROR;
default:
/*
* we should never get here, so this is a really bad error
*/
snmp_log(LOG_ERR, "unknown mode (%d) in handle_memsize\n",
reqinfo->mode);
return SNMP_ERR_GENERR;
}
return SNMP_ERR_NOERROR;
}
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
struct pst_static pst;
struct pst_dynamic psd;
netsnmp_memory_info *mem;
long total_swap = 0;
long free_swap = 0;
long size = 0;
/*
* Retrieve the memory information from the underlying O/S...
*/
if (pstat_getstatic(&pst, sizeof(pst), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getstatic failed!\n");
return -1;
}
if (pstat_getdynamic(&psd, sizeof(psd), (size_t) 1, 0) == -1) {
snmp_log(LOG_ERR, "memory_hpux: pstat_getdynamic failed!\n");
return -1;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup( "Physical memory" );
mem->units = pst.page_size;
mem->size = pst.physical_memory;
mem->free = psd.psd_free;
mem->other = -1;
}
get_swapinfo(&total_swap, &free_swap, &size);
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup( "Swap space (total)" );
mem->units = size;
mem->size = total_swap;
mem->free = free_swap;
mem->other = -1;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_STEXT, 1 );
if (!mem) {
snmp_log_perror("No Swap text entry");
} else {
if (!mem->descr)
mem->descr = strdup( "Swapped text pages" );
mem->units = pst.page_size;
mem->size = psd.psd_vmtxt;
mem->free = psd.psd_avmtxt;
mem->other = -1;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_RTEXT, 1 );
if (!mem) {
snmp_log_perror("No real text entry");
} else {
if (!mem->descr)
mem->descr = strdup( "Real text pages" );
mem->units = pst.page_size;
mem->size = psd.psd_rmtxt;
mem->free = psd.psd_armtxt;
mem->other = -1;
}
/*
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_MISC, 1 );
if (!mem) {
snmp_log_perror("No Buffer, etc info entry");
} else {
mem->units = 1024;
mem->size = -1;
mem->free = (pst.page_size/1024)*psd.psd_free + swap.free_swap;
mem->other = -1;
}
*/
return 0;
}
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
netsnmp_memory_info *mem;
long pagesize;
int nswap;
struct vmmeter vmem;
struct vmtotal total;
size_t total_size = sizeof(total);
int total_mib[] = { CTL_VM, VM_METER };
u_long phys_mem;
u_long user_mem;
unsigned int bufspace;
unsigned int maxbufspace;
size_t mem_size = sizeof(phys_mem);
size_t buf_size = sizeof(bufspace);
int phys_mem_mib[] = { CTL_HW, HW_PHYSMEM };
int user_mem_mib[] = { CTL_HW, HW_USERMEM };
/*
* Retrieve the memory information from the underlying O/S...
*/
sysctl(total_mib, 2, &total, &total_size, NULL, 0);
sysctl(phys_mem_mib, 2, &phys_mem, &mem_size, NULL, 0);
sysctl(user_mem_mib, 2, &user_mem, &mem_size, NULL, 0);
sysctlbyname("vfs.bufspace", &bufspace, &buf_size, NULL, 0);
sysctlbyname("vfs.maxbufspace", &maxbufspace, &buf_size, NULL, 0);
auto_nlist(SUM_SYMBOL, (char *) &vmem, sizeof(vmem));
#ifndef freebsd4
pagesize = 1024;
#else
pagesize = getpagesize();
#endif
/*
* ... and save this in a standard form.
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Physical Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Physical memory");
mem->units = pagesize;
mem->size = user_mem/pagesize;
mem->free = total.t_free;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_USERMEM, 1 );
if (!mem) {
snmp_log_perror("No (user) Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Real memory");
mem->units = pagesize;
mem->size = total.t_rm;
mem->free = total.t_arm;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 1 );
if (!mem) {
snmp_log_perror("No Virtual Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Virtual memory");
mem->units = pagesize;
mem->size = total.t_vm;
mem->free = total.t_avm;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED, 1 );
if (!mem) {
snmp_log_perror("No Shared Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Shared virtual memory");
mem->units = pagesize;
mem->size = total.t_vmshr;
mem->free = total.t_avmshr;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED2, 1 );
if (!mem) {
snmp_log_perror("No Shared2 Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Shared real memory");
mem->units = pagesize;
mem->size = total.t_rmshr;
mem->free = total.t_armshr;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_CACHED, 1 );
if (!mem) {
snmp_log_perror("No Cached Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Cached memory");
mem->units = vmem.v_page_size;
mem->size = vmem.v_cache_max;
mem->free = vmem.v_cache_max - vmem.v_cache_count;
}
nswap = swapmode(pagesize);
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup( (nswap>1) ? "Swap space (total)"
: "Swap space");
mem->units = pagesize;
mem->size = swapTotal;
mem->free = swapFree;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_MBUF, 1 );
if (!mem) {
snmp_log_perror("No Buffer, etc info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Memory buffers");
mem->units = 1024;
mem->size = maxbufspace / 1024;
mem->free = (maxbufspace - bufspace)/1024;
}
return 0;
}
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
netsnmp_memory_info *mem;
struct rminfo meminfo; /* struct for getting memory info, see sys/sysmp.h */
int pagesz, rminfosz;
off_t swaptotal, swapfree;
/*
* Retrieve the memory information from the underlying O/S...
*/
DEBUGMSGTL(("hardware/memory/memory_irix", "Start retrieving values from OS\n"));
pagesz = getpagesize();
DEBUGMSGTL(("hardware/memory/memory_irix", "Page size: %d\n", pagesz));
rminfosz = (int)sysmp(MP_SASZ, MPSA_RMINFO);
DEBUGMSGTL(("hardware/memory/memory_irix", "rminfo size: %d\n", rminfosz));
if (sysmp(MP_SAGET, MPSA_RMINFO, &meminfo, rminfosz) < 0) {
snmp_log(LOG_ERR, "memory_irix: sysmp failed!\n");
return -1;
}
swapctl(SC_GETSWAPTOT, &swaptotal);
swapctl(SC_GETFREESWAP, &swapfree);
/*
* ... and save this in a standard form.
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Physical Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Physical memory");
mem->units = pagesz;
mem->size = meminfo.physmem;
mem->free = meminfo.availrmem;
mem->other = -1;
DEBUGMSGTL(("hardware/memory/memory_irix", "Physical memory: size %u, free %u\n", mem->size, mem->free));
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 1 );
if (!mem) {
snmp_log_perror("No Virtual Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Virtual memory");
mem->units = pagesz; /* swaptotal is in blocks, so adjust below */
mem->size = meminfo.physmem + (swaptotal*512/pagesz);
mem->free = meminfo.availsmem;
mem->other = -1;
DEBUGMSGTL(("hardware/memory/memory_irix", "Virtual memory: size %u, free %u\n", mem->size, mem->free));
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Swap space");
mem->units = 1024;
mem->size = swaptotal/2; /* blocks to KB */
mem->free = swapfree/2; /* blocks to KB */
mem->other = -1;
DEBUGMSGTL(("hardware/memory/memory_irix", "Swap: size %u, free %u\n", mem->size, mem->free));
}
return 0;
}
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
int statfd;
static char *buff = NULL;
static int bsize = 0;
static int first = 1;
ssize_t bytes_read;
char *b;
unsigned long memtotal = 0, memfree = 0, memshared = 0,
buffers = 0, cached = 0,
swaptotal = 0, swapfree = 0;
netsnmp_memory_info *mem;
/*
* Retrieve the memory information from the underlying O/S...
*/
if ((statfd = open(MEMINFO_FILE, O_RDONLY, 0)) == -1) {
snmp_log_perror(MEMINFO_FILE);
return -1;
}
if (bsize == 0) {
bsize = MEMINFO_INIT_SIZE;
buff = malloc(bsize+1);
if (NULL == buff) {
snmp_log(LOG_ERR, "malloc failed\n");
return -1;
}
}
while ((bytes_read = read(statfd, buff, bsize)) == bsize) {
b = realloc(buff, bsize + MEMINFO_STEP_SIZE + 1);
if (NULL == b) {
snmp_log(LOG_ERR, "malloc failed\n");
return -1;
}
buff = b;
bsize += MEMINFO_STEP_SIZE;
DEBUGMSGTL(("mem", "/proc/meminfo buffer increased to %d\n", bsize));
close(statfd);
statfd = open(MEMINFO_FILE, O_RDONLY, 0);
if (statfd == -1) {
snmp_log_perror(MEMINFO_FILE);
return -1;
}
}
close(statfd);
if (bytes_read <= 0) {
snmp_log_perror(MEMINFO_FILE);
} else {
buff[bytes_read] = '\0';
}
/*
* ... parse this into a more useable form...
*/
b = strstr(buff, "MemTotal: ");
if (b)
sscanf(b, "MemTotal: %lu", &memtotal);
else {
if (first)
snmp_log(LOG_ERR, "No MemTotal line in /proc/meminfo\n");
}
b = strstr(buff, "MemFree: ");
if (b)
sscanf(b, "MemFree: %lu", &memfree);
else {
if (first)
snmp_log(LOG_ERR, "No MemFree line in /proc/meminfo\n");
}
b = strstr(buff, "MemShared: ");
if (b)
sscanf(b, "MemShared: %lu", &memshared);
else {
if (first)
if (0 == netsnmp_os_prematch("Linux","2.4"))
snmp_log(LOG_ERR, "No MemShared line in /proc/meminfo\n");
}
b = strstr(buff, "Buffers: ");
if (b)
sscanf(b, "Buffers: %lu", &buffers);
else {
if (first)
snmp_log(LOG_ERR, "No Buffers line in /proc/meminfo\n");
}
b = strstr(buff, "Cached: ");
if (b)
sscanf(b, "Cached: %lu", &cached);
else {
if (first)
snmp_log(LOG_ERR, "No Cached line in /proc/meminfo\n");
}
b = strstr(buff, "SwapTotal: ");
if (b)
sscanf(b, "SwapTotal: %lu", &swaptotal);
else {
if (first)
snmp_log(LOG_ERR, "No SwapTotal line in /proc/meminfo\n");
}
b = strstr(buff, "SwapFree: ");
if (b)
sscanf(b, "SwapFree: %lu", &swapfree);
else {
if (first)
snmp_log(LOG_ERR, "No SwapFree line in /proc/meminfo\n");
}
first = 0;
/*
* ... and save this in a standard form.
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Physical Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Physical memory");
mem->units = 1024;
mem->size = memtotal;
mem->free = memfree;
mem->other = -1;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 1 );
if (!mem) {
snmp_log_perror("No Virtual Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Virtual memory");
mem->units = 1024;
mem->size = memtotal+swaptotal;
mem->free = memfree +swapfree;
mem->other = -1;
}
/* Shared memory is not reported by Linux 2.6 kernel */
if (0 != netsnmp_os_prematch("Linux","2.6")) {
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED, 1 );
if (!mem) {
snmp_log_perror("No Shared Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Shared memory");
mem->units = 1024;
mem->size = memshared;
mem->free = -1;
mem->other = -1;
}
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_CACHED, 1 );
if (!mem) {
snmp_log_perror("No Cached Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Cached memory");
mem->units = 1024;
mem->size = cached;
mem->free = 0; /* Report cached size/used as equal */
mem->other = -1;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Swap space");
mem->units = 1024;
mem->size = swaptotal;
mem->free = swapfree;
mem->other = -1;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_MBUF, 1 );
if (!mem) {
snmp_log_perror("No Buffer, etc info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Memory buffers");
mem->units = 1024;
mem->size = memtotal; /* Traditionally we've always regarded
all memory as potentially available
for memory buffers. */
mem->free = memtotal - buffers;
mem->other = -1;
}
return 0;
}
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
netsnmp_memory_info *mem;
perfstat_memory_total_t pstat_mem;
long pagesize;
/*
* Retrieve the memory information from the underlying O/S...
*/
if (perfstat_memory_total((perfstat_id_t *)NULL, &pstat_mem,
sizeof(perfstat_memory_total_t), 1) < 1) {
snmp_log(LOG_ERR, "memory_aix: perfstat_memory_total failed!\n");
return -1;
}
pagesize = getpagesize();
/*
* ... and save this in a standard form.
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Physical Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Physical memory");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.real_total;
mem->free = pstat_mem.real_free;
}
/* ??? Duplicates Physical Memory statistics? */
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_USERMEM, 1 );
if (!mem) {
snmp_log_perror("No (user) Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Real memory");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.real_total; /* ? less system memory ? */
mem->free = pstat_mem.real_free;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 1 );
if (!mem) {
snmp_log_perror("No Virtual Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Virtual memory");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.virt_total;
mem->free = pstat_mem.real_free + pstat_mem.pgsp_free;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Swap space");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.pgsp_total;
mem->free = pstat_mem.pgsp_free;
mem->other = pstat_mem.pgsp_rsvd;
}
return 0;
}
int
handle_memory(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_memory_info *mem_info;
int val;
char buf[1024];
/*
* We just need to handle valid GET requests, as invalid instances
* are rejected automatically, and (valid) GETNEXT requests are
* converted into the appropriate GET request.
*
* We also only ever receive one request at a time.
*/
switch (reqinfo->mode) {
case MODE_GET:
netsnmp_memory_load();
switch (requests->requestvb->name[ reginfo->rootoid_len - 2 ]) {
case MEMORY_INDEX:
val = 0;
break;
case MEMORY_ERRNAME:
sprintf(buf, "swap");
snmp_set_var_typed_value(requests->requestvb, ASN_OCTET_STR,
(u_char *)buf, strlen(buf));
return SNMP_ERR_NOERROR;
case MEMORY_SWAP_TOTAL:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->size; /* swaptotal */
val *= (mem_info->units/1024);
break;
case MEMORY_SWAP_AVAIL:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->free; /* swapfree */
val *= (mem_info->units/1024);
break;
case MEMORY_REAL_TOTAL:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->size; /* memtotal */
val *= (mem_info->units/1024);
break;
case MEMORY_REAL_AVAIL:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->free; /* memfree */
val *= (mem_info->units/1024);
break;
case MEMORY_STXT_TOTAL:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_STEXT, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->size;
val *= (mem_info->units/1024);
break;
case MEMORY_STXT_AVAIL: /* Deprecated */
case MEMORY_STXT_USED:
/*
* The original MIB description of memAvailSwapTXT
* was inconsistent with that implied by the name.
* Retain the actual behaviour for the (sole)
* implementation of this object, but deprecate it in
* favour of a more consistently named replacement object.
*/
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_STEXT, 0 );
if (!mem_info)
goto NOSUCH;
val = (mem_info->size - mem_info->free);
val *= (mem_info->units/1024);
break;
case MEMORY_RTXT_TOTAL:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_RTEXT, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->size;
val *= (mem_info->units/1024);
break;
case MEMORY_RTXT_AVAIL: /* Deprecated */
case MEMORY_RTXT_USED:
/*
* The original MIB description of memAvailRealTXT
* was inconsistent with that implied by the name.
* Retain the actual behaviour for the (sole)
* implementation of this object, but deprecate it in
* favour of a more consistently named replacement object.
*/
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_RTEXT, 0 );
if (!mem_info)
goto NOSUCH;
val = (mem_info->size - mem_info->free);
val *= (mem_info->units/1024);
break;
case MEMORY_FREE:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->free; /* memfree + swapfree */
val *= (mem_info->units/1024);
break;
case MEMORY_SWAP_MIN:
val = minimum_swap;
break;
case MEMORY_SHARED:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED, 0 );
if (!mem_info)
goto NOSUCH;
val = mem_info->size; /* memshared */
val *= (mem_info->units/1024);
break;
case MEMORY_BUFFER:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_MBUF, 0 );
if (!mem_info || mem_info->size == -1)
goto NOSUCH;
val = (mem_info->size - mem_info->free); /* buffers */
val *= (mem_info->units/1024);
break;
case MEMORY_CACHED:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_CACHED, 0 );
if (!mem_info || mem_info->size== -1)
goto NOSUCH;
val = (mem_info->size - mem_info->free); /* cached */
val *= (mem_info->units/1024);
break;
case MEMORY_SWAP_ERROR:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 0 );
if (!mem_info)
goto NOSUCH;
val = ((mem_info->units / 1024) * mem_info->free > minimum_swap) ? 0 : 1;
break;
case MEMORY_SWAP_ERRMSG:
mem_info = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 0 );
if (!mem_info)
goto NOSUCH;
if ((mem_info->units / 1024) * mem_info->free > minimum_swap)
buf[0] = 0;
else
sprintf(buf, "Running out of swap space (%ld)", mem_info->free);
snmp_set_var_typed_value(requests->requestvb, ASN_OCTET_STR,
(u_char *)buf, strlen(buf));
return SNMP_ERR_NOERROR;
default:
snmp_log(LOG_ERR,
"unknown object (%" NETSNMP_PRIo "u) in handle_memory\n",
requests->requestvb->name[ reginfo->rootoid_len - 2 ]);
NOSUCH:
netsnmp_set_request_error( reqinfo, requests, SNMP_NOSUCHOBJECT );
return SNMP_ERR_NOERROR;
}
/*
* All non-integer objects (and errors) have already been
* processed. So return the integer value.
*/
snmp_set_var_typed_value(requests->requestvb, ASN_INTEGER,
(u_char *)&val, sizeof(val));
break;
default:
/*
* we should never get here, so this is a really bad error
*/
snmp_log(LOG_ERR, "unknown mode (%d) in handle_memory\n",
reqinfo->mode);
return SNMP_ERR_GENERR;
}
return SNMP_ERR_NOERROR;
}
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;
}
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
netsnmp_memory_info *mem;
long pagesize;
struct uvmexp uvmexp;
size_t uvmexp_size = sizeof(uvmexp);
struct vmtotal total;
size_t total_size = sizeof(total);
quad_t phys_mem;
quad_t user_mem;
size_t mem_size = sizeof(phys_mem);
#if defined(openbsd)
int phys_mem_mib[] = { CTL_HW, HW_PHYSMEM64 };
int user_mem_mib[] = { CTL_HW, HW_USERMEM64 };
int uvmexp_mib[] = { CTL_VM, VM_UVMEXP };
int total_mib[] = { CTL_VM, VM_METER };
#else
unsigned int bufspace;
unsigned int maxbufspace;
size_t buf_size = sizeof(bufspace);
#endif
/*
* Retrieve the memory information from the underlying O/S...
*/
#if defined(openbsd)
sysctl(uvmexp_mib, 2, &uvmexp, &uvmexp_size, NULL, 0);
sysctl(total_mib, 2, &total, &total_size, NULL, 0);
sysctl(phys_mem_mib, 2, &phys_mem, &mem_size, NULL, 0);
sysctl(user_mem_mib, 2, &user_mem, &mem_size, NULL, 0);
#else
if (sysctlbyname("vm.uvmexp", &uvmexp, &uvmexp_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.uvmexp failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("vm.vmmeter", &total, &total_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.vmmeter failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("hw.physmem64", &phys_mem, &mem_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl hw.physmem64 failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("hw.usermem64", &user_mem, &mem_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl hw.usermem64 failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("vm.bufmem", &bufspace, &buf_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.bufmem failed (errno %d)\n", errno);
return -1;
}
if (sysctlbyname("vm.bufmem_hiwater", &maxbufspace, &buf_size, NULL, 0) == -1) {
snmp_log(LOG_ERR, "sysctl vm.bufmem_hiwater failed (errno %d)\n", errno);
return -1;
}
#endif
pagesize = sysconf(_SC_PAGESIZE);
/*
* ... and save this in a standard form.
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Physical Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Physical memory");
mem->units = pagesize;
mem->size = phys_mem/pagesize;
mem->free = total.t_free;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_USERMEM, 1 );
if (!mem) {
snmp_log_perror("No (user) Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Real memory");
mem->units = pagesize;
mem->size = user_mem/pagesize;
mem->free = uvmexp.free;
}
#if 1
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 1 );
if (!mem) {
snmp_log_perror("No Virtual Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Virtual memory");
mem->units = pagesize;
mem->size = total.t_vm;
mem->free = total.t_avm;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED, 1 );
if (!mem) {
snmp_log_perror("No Shared Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Shared virtual memory");
mem->units = pagesize;
mem->size = total.t_vmshr;
mem->free = total.t_avmshr;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SHARED2, 1 );
if (!mem) {
snmp_log_perror("No Shared2 Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Shared real memory");
mem->units = pagesize;
mem->size = total.t_rmshr;
mem->free = total.t_armshr;
}
#endif
#ifdef SWAP_NSWAP
swapinfo(pagesize);
#endif
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Swap space");
mem->units = pagesize;
mem->size = uvmexp.swpages;
mem->free = uvmexp.swpages - uvmexp.swpginuse;
mem->other = -1;
}
#if defined(__NetBSD__)
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_MBUF, 1 );
if (!mem) {
snmp_log_perror("No Buffer, etc info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Memory buffers");
mem->units = 1024;
mem->size = maxbufspace /1024;
mem->size = (maxbufspace - bufspace)/1024;
}
#endif
return 0;
}
