+++ /dev/null
-#include <net-snmp/net-snmp-config.h>
-
-#if HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#if HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-#include <ctype.h>
-#include <signal.h>
-#if HAVE_MACHINE_PARAM_H
-#include <machine/param.h>
-#endif
-#if HAVE_SYS_VMMETER_H
-#if !defined(bsdi2) && !defined(netbsd1)
-#include <sys/vmmeter.h>
-#endif
-#endif
-#if HAVE_SYS_CONF_H
-#include <sys/conf.h>
-#endif
-#if HAVE_ASM_PAGE_H
-#include <asm/page.h>
-#endif
-#if HAVE_SYS_SWAP_H
-#include <sys/swap.h>
-#endif
-#if HAVE_SYS_FS_H
-#include <sys/fs.h>
-#else
-#if HAVE_UFS_FS_H
-#include <ufs/fs.h>
-#else
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#ifdef HAVE_SYS_VNODE_H
-#include <sys/vnode.h>
-#endif
-#ifdef HAVE_UFS_UFS_QUOTA_H
-#include <ufs/ufs/quota.h>
-#endif
-#ifdef HAVE_UFS_UFS_INODE_H
-#include <ufs/ufs/inode.h>
-#endif
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-#if HAVE_UFS_FFS_FS_H
-#include <ufs/ffs/fs.h>
-#endif
-#endif
-#endif
-#if HAVE_MTAB_H
-#include <mtab.h>
-#endif
-#include <sys/stat.h>
-#include <errno.h>
-#if HAVE_FSTAB_H
-#include <fstab.h>
-#endif
-#if HAVE_SYS_STATVFS_H
-#include <sys/statvfs.h>
-#endif
-#if HAVE_SYS_VFS_H
-#include <sys/vfs.h>
-#endif
-#if (!defined(HAVE_STATVFS)) && defined(HAVE_STATFS)
-#if HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-#if HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
-#if HAVE_SYS_SYSCTL_H
-#include <sys/sysctl.h>
-#endif
-#define statvfs statfs
-#endif
-#if HAVE_VM_SWAP_PAGER_H
-#include <vm/swap_pager.h>
-#endif
-#if HAVE_SYS_FIXPOINT_H
-#include <sys/fixpoint.h>
-#endif
-#if HAVE_MALLOC_H
-#include <malloc.h>
-#endif
-#if HAVE_STRING_H
-#include <string.h>
-#endif
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-#if defined(hpux10) || defined(hpux11)
-#include <sys/pstat.h>
-#endif
-
-#include <net-snmp/net-snmp-includes.h>
-#include <net-snmp/agent/net-snmp-agent-includes.h>
-#include <net-snmp/agent/auto_nlist.h>
-
-#include "mibdefs.h"
-#include "struct.h"
-#include "util_funcs.h"
-#include "memory.h"
-
-int minimumswap;
-#ifndef linux
-static int pageshift; /* log base 2 of the pagesize */
-#endif
-
-#ifndef bsdi2
-#ifdef NSWAPDEV_SYMBOL
-int nswapdev=10; /* taken from <machine/space.h> */
-#endif
-#ifdef NSWAPFS_SYMBOL
-int nswapfs=10; /* taken from <machine/space.h> */
-#endif
-#endif /* !bsdi2 */
-
-#define DEFAULTMINIMUMSWAP 16000 /* kilobytes */
-
-static FindVarMethod var_extensible_mem;
-
-void
-init_memory(void)
-{
-#ifndef linux
- int pagesize;
-#ifdef PHYSMEM_SYMBOL
- auto_nlist(PHYSMEM_SYMBOL, 0, 0);
-#endif
-#ifdef TOTAL_MEMORY_SYMBOL
- auto_nlist(TOTAL_MEMORY_SYMBOL, 0, 0);
-#endif
-#ifdef MBSTAT_SYMBOL
- auto_nlist(MBSTAT_SYMBOL, 0, 0);
-#endif
-#ifdef SWDEVT_SYMBOL
- auto_nlist(SWDEVT_SYMBOL, 0, 0);
-#endif
-#ifdef FSWDEVT_SYMBOL
- auto_nlist(FSWDEVT_SYMBOL, 0, 0);
-#endif
-#ifdef NSWAPFS_SYMBOL
- auto_nlist(NSWAPFS_SYMBOL, 0, 0);
-#endif
-#ifdef NSWAPDEV_SYMBOL
- auto_nlist(NSWAPDEV_SYMBOL, 0, 0);
-#endif
-
-#ifndef bsdi2
-#ifdef NSWAPDEV_SYMBOL
- if (auto_nlist(NSWAPDEV_SYMBOL, (char *) &nswapdev, sizeof(nswapdev))
- == 0)
- return;
-#endif
-#ifdef NSWAPFS_SYMBOL
- if (auto_nlist(NSWAPFS_SYMBOL, (char *) &nswapfs, sizeof(nswapfs)) ==
- 0)
- return;
-#endif
-#endif
- pagesize = 1 << PGSHIFT;
- pageshift = 0;
- while (pagesize > 1) {
- pageshift++;
- pagesize >>= 1;
- }
- pageshift -= 10;
-#endif
- {
- struct variable2 extensible_mem_variables[] = {
- {MIBINDEX, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MIBINDEX}},
- {ERRORNAME, ASN_OCTET_STR, RONLY, var_extensible_mem, 1,
- {ERRORNAME}},
- {MEMTOTALSWAP, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMTOTALSWAP}},
- {MEMAVAILSWAP, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMAVAILSWAP}},
- {MEMTOTALREAL, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMTOTALREAL}},
- {MEMAVAILREAL, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMAVAILREAL}},
- {MEMTOTALSWAPTXT, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMTOTALSWAPTXT}},
- {MEMUSEDSWAPTXT, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMUSEDSWAPTXT}},
- {MEMTOTALREALTXT, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMTOTALREALTXT}},
- {MEMUSEDREALTXT, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMUSEDREALTXT}},
- {MEMTOTALFREE, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMTOTALFREE}},
- {MEMSWAPMINIMUM, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMSWAPMINIMUM}},
- {MEMSHARED, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMSHARED}},
- {MEMBUFFER, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMBUFFER}},
- {MEMCACHED, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {MEMCACHED}},
- {ERRORFLAG, ASN_INTEGER, RONLY, var_extensible_mem, 1,
- {ERRORFLAG}},
- {ERRORMSG, ASN_OCTET_STR, 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[] = { UCDAVIS_MIB, 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;
-}
-
-#ifdef linux
-enum meminfo_row { meminfo_main = 0,
- meminfo_swap
-};
-
-enum meminfo_col { meminfo_total = 0, meminfo_used, meminfo_free,
- meminfo_shared, meminfo_buffers, meminfo_cached
-};
-#define MEMINFO_FILE "/proc/meminfo"
-
-static char buf[300];
-
-/*
- * This macro opens FILE only if necessary and seeks to 0 so that successive
- * calls to the functions are more efficient. It also reads the current
- * contents of the file into the global buf.
- */
-#define FILE_TO_BUF(FILE) { \
- static int n, fd = -1; \
- if (fd == -1 && (fd = open(FILE, O_RDONLY)) == -1) { \
- return 0; \
- } \
- lseek(fd, 0L, SEEK_SET); \
- if ((n = read(fd, buf, sizeof buf - 1)) < 0) { \
- close(fd); \
- fd = -1; \
- return 0; \
- } \
- buf[n] = '\0'; \
-}
-
-#define MAX_ROW 3 /* these are a little liberal for flexibility */
-#define MAX_COL 7
-
-unsigned **
-meminfo(void)
-{
- static unsigned *row[MAX_ROW + 1]; /* row pointers */
- static unsigned num[MAX_ROW * MAX_COL]; /* number storage */
- char *p;
- int i, j, k, l;
- unsigned long m;
-
- FILE_TO_BUF(MEMINFO_FILE)
- if (!row[0]) /* init ptrs 1st time through */
- for (i = 0; i < MAX_ROW; i++) /* std column major order: */
- row[i] = num + MAX_COL * i; /* A[i][j] = A + COLS*i + j */
- p = buf;
- for (i = 0; i < MAX_ROW; i++) /* zero unassigned fields */
- for (j = 0; j < MAX_COL; j++)
- row[i][j] = 0;
- for (i = 0; i < MAX_ROW && *p; i++) { /* loop over rows */
- while (*p && !isdigit(*p))
- p++; /* skip chars until a digit */
- for (j = 0; j < MAX_COL && *p; j++) { /* scanf column-by-column */
- l = sscanf(p, "%lu%n", &m, &k);
- m /= 1024;
- if (0x7fffffff < m) {
- *(row[i] + j) = 0x7fffffff;
- } else {
- *(row[i] + j) = (unsigned) m;
- }
- p += k; /* step over used buffer */
- if (*p == '\n' || l < 1) /* end of line/buffer */
- break;
- }
- }
- /*
- * row[i+1] = NULL; terminate the row list, currently unnecessary
- */
- return row; /* NULL return ==> error */
-}
-
-unsigned
-memory(int iindex)
-{
- unsigned **mem = meminfo();
- if (mem != NULL)
- return mem[meminfo_main][iindex];
- else
- return -1;
-}
-
-unsigned
-memswap(int iindex)
-{
- unsigned **mem = meminfo();
- if (mem != NULL)
- return mem[meminfo_swap][iindex];
- else
- return -1;
-}
-#else
-#define pagetok(size) ((size) << pageshift)
-#endif
-
-#define SWAPGETLEFT 0
-#define SWAPGETTOTAL 1
-
-static long
-getswap(int rettype)
-{
- long spaceleft = 0, spacetotal = 0;
-
-#if defined(linux)
- spaceleft = memswap(meminfo_free);
- spacetotal = memswap(meminfo_total);
-#elif defined(bsdi2)
- struct swapstats swapst;
- size_t size = sizeof(swapst);
- static int mib[] = { CTL_VM, VM_SWAPSTATS };
- if (sysctl(mib, 2, &swapst, &size, NULL, 0) < 0)
- return (0);
- spaceleft = swapst.swap_free / 2;
- spacetotal = swapst.swap_total / 2;
-#elif defined (hpux10) || defined(hpux11)
- struct pst_swapinfo pst_buf;
- int ndx = 0;
- long pgs, pgs_free;
-
- while (pstat_getswap(&pst_buf, sizeof(struct pst_swapinfo), 1, ndx) > 0) {
- if (pst_buf.pss_flags & SW_BLOCK) {
- pgs = pst_buf.pss_nblksenabled;
- pgs_free = pst_buf.pss_nblksavail;
- }
- else if (pst_buf.pss_flags & SW_FS) {
- pgs = pst_buf.pss_limit;
- pgs_free = pgs - pst_buf.pss_allocated - pst_buf.pss_reserve;
- /*
- * the following calculation is done this way to avoid integer overflow!
- * pss_swapchunk is either 512 or a multiple of 1024!
- */
- if (pst_buf.pss_swapchunk == 512) {
- pgs_free /= 2;
- pgs /= 2;
- } else {
- pgs_free *= (pst_buf.pss_swapchunk / 1024);
- pgs *= (pst_buf.pss_swapchunk / 1024);
- }
- }
- else {
- pgs = pgs_free = 0;
- }
- spaceleft += pgs_free;
- spacetotal += pgs;
- ndx = pst_buf.pss_idx + 1;
- }
-#else /* !linux && !bsdi2 && !hpux10 && !hpux11 */
- struct swdevt swdevt[100];
- struct fswdevt fswdevt[100];
- FILE *file;
- struct extensible ex;
- int i, fd;
- char *cp;
-
- if (auto_nlist
- (SWDEVT_SYMBOL, (char *) swdevt, sizeof(struct swdevt) * nswapdev)
- == 0)
- return (0);
- DEBUGMSGTL(("ucd-snmp/memory", "%d block swap devices: \n", nswapdev));
- for (i = 0; i < nswapdev; i++) {
- DEBUGMSGTL(("ucd-snmp/memory", "swdevt[%d]: %d\n", i,
- swdevt[i].sw_enable));
- if (swdevt[i].sw_enable)
- {
-#ifdef STRUCT_SWDEVT_HAS_SW_NBLKSENABLED
- DEBUGMSGTL(("ucd-snmp/memory",
- " swdevt.sw_nblksenabled: %d\n",
- swdevt[i].sw_nblksenabled));
- spacetotal += swdevt[i].sw_nblksenabled;
-#else
- DEBUGMSGTL(("ucd-snmp/memory", " swdevt.sw_nblks: %d\n",
- swdevt[i].sw_nblks));
- spacetotal += swdevt[i].sw_nblks;
-#endif
- DEBUGMSGTL(("ucd-snmp/memory", " swdevt.sw_nfpgs: %d\n",
- swdevt[i].sw_nfpgs));
- spaceleft += (swdevt[i].sw_nfpgs * 4);
- }
- }
- if (auto_nlist
- (FSWDEVT_SYMBOL, (char *) fswdevt,
- sizeof(struct fswdevt) * nswapfs)
- == 0)
- return (0);
- DEBUGMSGTL(("ucd-snmp/memory", "%d fs swap devices: \n", nswapfs));
- for (i = 0; i < nswapfs; i++) {
- DEBUGMSGTL(("ucd-snmp/memory", "fswdevt[%d]: %d\n", i,
- fswdevt[i].fsw_enable));
- if (fswdevt[i].fsw_enable)
- {
- spacetotal += (fswdevt[i].fsw_limit * 2048); /* 2048=bytes per page? */
- spaceleft += (fswdevt[i].fsw_limit * 2048 -
- ((fswdevt[i].fsw_allocated -
- fswdevt[i].fsw_min) * 37));
- DEBUGMSGTL(("ucd-snmp/memory",
- " fswdevt[i].fsw_limit: %d\n",
- fswdevt[i].fsw_limit));
- DEBUGMSGTL(("ucd-snmp/memory",
- " fswdevt[i].fsw_allocated: %d\n",
- fswdevt[i].fsw_allocated));
- DEBUGMSGTL(("ucd-snmp/memory",
- " fswdevt[i].fsw_min: %d\n",
- fswdevt[i].fsw_min));
- DEBUGMSGTL(("ucd-snmp/memory",
- " fswdevt[i].fsw_reserve: %d\n",
- fswdevt[i].fsw_reserve));
- /*
- * 37 = calculated value I know it makes no sense, nor is it accurate
- */
- }
- }
- /*
- * this is a real hack. I need to get the hold info from swapinfo, but
- * I can't figure out how to read it out of the kernel directly
- * -- Wes
- */
- strcpy(ex.command, "/etc/swapinfo -h");
- if ((fd = get_exec_output(&ex)) != -1) {
- file = fdopen(fd, "r");
- for (i = 1;
- i <= 2 && fgets(ex.output, sizeof(ex.output), file) != NULL;
- i++);
- if (fgets(ex.output, sizeof(ex.output), file) != NULL) {
- cp = skip_white(ex.output); /* not there should be any */
- cp = skip_not_white(cp); /* skip over "reserve" */
- cp = skip_white(cp);
- cp = skip_not_white(cp); /* avail swap, a '-' in most cases */
- cp = skip_white(cp);
- spaceleft -= atoi(cp); /* reserved swap */
- }
- fclose(file);
- wait_on_exec(&ex);
- } else {
- return (0);
- }
-#endif /* !linux && !bsdi2 && !hpux10 && !hpux11 */
-
- switch (rettype) {
- case SWAPGETLEFT:
- return (spaceleft);
- case SWAPGETTOTAL:
- return (spacetotal);
- }
- return 0;
-}
-
-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[300];
-#if !defined(linux)
-#if defined(hpux10) || defined(hpux11)
- struct pst_dynamic pst_buf;
-#elif defined(TOTAL_MEMORY_SYMBOL) || defined(USE_SYSCTL_VM)
- struct vmtotal total;
-#endif
-#endif
-
- long_ret = 0; /* set to 0 as default */
-
- if (header_generic(vp, name, length, exact, var_len, write_method))
- return (NULL);
-
-#if !defined(linux)
-#if defined(hpux10) || defined(hpux11)
- if (pstat_getdynamic(&pst_buf, sizeof(struct pst_dynamic), 1, 0) < 0)
- return NULL;
-#elif defined(USE_SYSCTL_VM)
- /*
- * sum memory statistics
- */
- {
- size_t size = sizeof(total);
- static int mib[] = { CTL_VM, VM_TOTAL };
- if (sysctl(mib, 2, &total, &size, NULL, 0) < 0)
- return NULL;
- }
-#elif defined(TOTAL_MEMORY_SYMBOL)
- if (auto_nlist(TOTAL_MEMORY_SYMBOL, (char *) &total, sizeof(total)) ==
- 0)
- return NULL;
-#endif
-#endif /* !linux */
-
- 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 = getswap(SWAPGETTOTAL);
- return ((u_char *) (&long_ret));
- case MEMAVAILSWAP:
- long_ret = getswap(SWAPGETLEFT);
- return ((u_char *) (&long_ret));
- case MEMSWAPMINIMUM:
- long_ret = minimumswap;
- return ((u_char *) (&long_ret));
- case MEMTOTALREAL:
-#if defined(USE_SYSCTL)
- {
- size_t size = sizeof(long_ret);
- static int mib[] = { CTL_HW, HW_PHYSMEM };
- if (sysctl(mib, 2, &long_ret, &size, NULL, 0) < 0)
- return NULL;
- long_ret = long_ret / 1024;
- }
-#elif defined(hpux10) || defined(hpux11)
- {
- struct pst_static pst_buf;
- if (pstat_getstatic(&pst_buf, sizeof(struct pst_static), 1, 0)
- < 0)
- return NULL;
- long_ret =
- pst_buf.physical_memory * (pst_buf.page_size / 1024);
- }
-#elif defined(linux)
- long_ret = memory(meminfo_total);
-#elif defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
- long_ret =
- sysconf(_SC_PHYS_PAGES) * (sysconf(_SC_PAGESIZE) / 1024);
-#elif defined(PHYSMEM_SYMBOL)
- {
- int result;
- if (auto_nlist
- (PHYSMEM_SYMBOL, (char *) &result, sizeof(result)) == 0)
- return NULL;
- long_ret = result * 1000; /* ??? */
- }
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
- case MEMAVAILREAL:
-#ifdef linux
- long_ret = memory(meminfo_free);
-#elif defined(hpux10) || defined(hpux11)
- long_ret = pagetok((int) pst_buf.psd_arm);
-#elif defined(TOTAL_MEMORY_SYMBOL) || defined(USE_SYSCTL_VM)
- long_ret = pagetok((int) total.t_arm);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
-#ifndef linux
- case MEMTOTALSWAPTXT:
-#if defined(hpux10) || defined(hpux11)
- long_ret = pagetok((int) pst_buf.psd_vmtxt);
-#elif !defined(bsdi2)
- long_ret = pagetok(total.t_vmtxt);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
- case MEMUSEDSWAPTXT:
-#if defined(hpux10) || defined(hpux11)
- long_ret = pagetok((int) pst_buf.psd_avmtxt);
-#elif !defined(bsdi2)
- long_ret = pagetok(total.t_avmtxt);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
- case MEMTOTALREALTXT:
-#if defined(hpux10) || defined(hpux11)
- long_ret = pagetok((int) pst_buf.psd_rmtxt);
-#elif !defined(bsdi2)
- long_ret = pagetok(total.t_rmtxt);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
- case MEMUSEDREALTXT:
-#if defined(hpux10) || defined(hpux11)
- long_ret = pagetok((int) pst_buf.psd_armtxt);
-#elif !defined(bsdi2)
- long_ret = pagetok(total.t_armtxt);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
-#endif /* linux */
- case MEMTOTALFREE:
-#ifdef linux
- long_ret = memory(meminfo_free) + memswap(meminfo_free);
-#elif defined(hpux10) || defined(hpux11)
- long_ret = pagetok((int) pst_buf.psd_free);
-#else
- long_ret = pagetok(total.t_free);
-#endif
- return ((u_char *) (&long_ret));
- case MEMCACHED:
-#ifdef linux
- long_ret = memory(meminfo_cached);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
- case MEMBUFFER:
-#ifdef linux
- long_ret = memory(meminfo_buffers);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
- case MEMSHARED:
-#ifdef linux
- long_ret = memory(meminfo_shared);
-#else
- return NULL; /* no dummy values */
-#endif
- return ((u_char *) (&long_ret));
- case ERRORFLAG:
- long_ret = getswap(SWAPGETLEFT);
- long_ret = (long_ret > minimumswap) ? 0 : 1;
- return ((u_char *) (&long_ret));
- case ERRORMSG:
- long_ret = getswap(SWAPGETLEFT);
- if ((long_ret > minimumswap) ? 0 : 1)
- sprintf(errmsg, "Running out of swap space (%ld)",
- getswap(SWAPGETLEFT));
- else
- errmsg[0] = 0;
- *var_len = strlen(errmsg);
- return ((u_char *) (errmsg));
- }
- return NULL;
-}
projects / bcm963xx.git / blobdiff