patch for correct calculation of pfree and pused

--- src/libs/zbxsysinfo/freebsd/memory.c.orig3  2011-05-05 17:40:35.000000000 +0400
+++ src/libs/zbxsysinfo/freebsd/memory.c    2011-05-05 17:40:43.000000000 +0400
@@ -149,7 +149,7 @@
 {
 #if defined(HAVE_FUNCTION_SYSCTLBYNAME)
    /* FreeBSD 6.2 i386; FreeBSD 7.0 i386 */
-   u_int       totalpages, freepages;
+   u_int       totalpages, freepages, cachepages, inactivepages;
    size_t      len;

    len = sizeof(totalpages);
@@ -162,7 +162,17 @@
    if (0 != sysctlbyname("vm.stats.vm.v_free_count", &freepages, &len, NULL, 0))
        return SYSINFO_RET_FAIL;

-   SET_DBL_RESULT(result, (double)(100.0 * freepages) / totalpages);
+   len = sizeof(cachepages);
+
+   if (0 != sysctlbyname("vm.stats.vm.v_cache_count", &cachepages, &len, NULL, 0))
+       return SYSINFO_RET_FAIL;
+
+   len = sizeof(inactivepages);
+
+   if (0 != sysctlbyname("vm.stats.vm.v_inactive_count", &inactivepages, &len, NULL, 0))
+       return SYSINFO_RET_FAIL;
+
+   SET_DBL_RESULT(result, (double)(100.0 * (freepages + cachepages + inactivepages) / totalpages));

    return SYSINFO_RET_OK;
 #else
@@ -174,7 +184,7 @@
 {
 #if defined(HAVE_FUNCTION_SYSCTLBYNAME)
    /* FreeBSD 6.2 i386; FreeBSD 7.0 i386 */
-   u_int       totalpages, freepages;
+   u_int       totalpages, activepages, wiredpages;
    size_t      len;

    len = sizeof(totalpages);
@@ -182,12 +192,17 @@
    if (0 != sysctlbyname("vm.stats.vm.v_page_count", &totalpages, &len, NULL, 0))
        return SYSINFO_RET_FAIL;

-   len = sizeof(freepages);
+   len = sizeof(activepages);

-   if (0 != sysctlbyname("vm.stats.vm.v_free_count", &freepages, &len, NULL, 0))
+   if (0 != sysctlbyname("vm.stats.vm.v_active_count", &activepages, &len, NULL, 0))
+       return SYSINFO_RET_FAIL;
+
+   len = sizeof(wiredpages);
+
+   if (0 != sysctlbyname("vm.stats.vm.v_wire_count", &wiredpages, &len, NULL, 0))
        return SYSINFO_RET_FAIL;

-   SET_DBL_RESULT(result, (double)(100.0 * (totalpages - freepages)) / totalpages);
+   SET_DBL_RESULT(result, (double)((100.0 * (activepages + wiredpages)) / totalpages));

    return SYSINFO_RET_OK;
 #else