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tdb |
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/* |
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* i-scream central monitoring system |
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tdb |
1.3 |
* http://www.i-scream.org.uk |
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tdb |
1.2 |
* Copyright (C) 2000-2002 i-scream |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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pajs |
1.1 |
#include <stdio.h> |
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#include "ukcprog.h" |
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#ifdef SOLARIS |
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#include <sys/stat.h> |
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#include <sys/swap.h> |
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#include <unistd.h> |
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#endif |
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#ifdef LINUX |
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#include <string.h> |
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#endif |
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#ifdef FREEBSD |
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#include <sys/types.h> |
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#include <pwd.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <kvm.h> |
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#include <limits.h> |
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#include <grp.h> |
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#endif |
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char *get_swap_stats(){ |
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char *xml_swap_stats; |
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long swaptotal=0; |
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long swapfree=0; |
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long swapused=0; |
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#ifdef SOLARIS |
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struct anoninfo ai; |
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int pagesize; |
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#endif |
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#ifdef LINUX |
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char *line; |
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FILE *f; |
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#endif |
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#ifdef FREEBSD |
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gid_t gid; |
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struct group *kmem_grp; |
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struct kvm_swap swapinfo; |
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int pagesize; |
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kvm_t *kvmd = NULL; |
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char errbuf[_POSIX2_LINE_MAX]; |
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#endif |
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#ifdef SOLARIS |
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if((pagesize=sysconf(_SC_PAGESIZE)) == -1){ |
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errf("failed to get system pagesize (%m)"); |
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return NULL; |
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} |
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if (swapctl(SC_AINFO, &ai) == -1) { |
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errf("failed to get swap stats (%m)"); |
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return NULL; |
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} |
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swaptotal=((ai.ani_max/1024)*pagesize)/1024; |
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swapused=((ai.ani_resv/1024)*pagesize)/1024; |
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swapfree=swaptotal-swapused; |
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#endif |
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#ifdef LINUX |
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if ((f=fopen("/proc/meminfo", "r" ))==NULL) { |
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errf("Failed to open memory stats (%m)"); |
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return NULL; |
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} |
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while((line=fpgetline(f)) != NULL){ |
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if (((strncmp(line,"Swap: ",6)) == 0)) { |
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if((sscanf(line, "%*s %ld %ld %ld", &swaptotal, &swapused, &swapfree)) != 3){ |
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errf("Failed to read swap details (%m)"); |
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return NULL; |
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} |
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break; |
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} |
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} |
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if ((fclose(f)) != 0) { |
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errf("Failed to close file (%m)"); |
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return NULL; |
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} |
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swaptotal=(swaptotal/1024)/1024; |
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swapused=(swapused/1024)/1024; |
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swapfree=(swapfree/1024)/1024; |
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#endif |
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#ifdef FREEBSD |
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/* To do this, this has to be setgid kmem, or be run as root :( |
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*/ |
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#define MEM_GROUP "kmem" |
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if((kmem_grp=getgrnam(MEM_GROUP))==NULL){ |
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errf("Failed to find gid for kmem (%m)"); |
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return NULL; |
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} |
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gid=getgid(); |
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if((setegid(kmem_grp->gr_gid))!=0){ |
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errf("Failed to become gid kmem (%m)\nCan not get swap info."); |
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return NULL; |
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} |
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if((kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf)) == NULL){ |
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errf("Failed to open kvm info to get swap stats (%m)"); |
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return NULL; |
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} |
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if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){ |
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errf("Failed to get swap info (%m)"); |
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return NULL; |
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} |
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if((kvm_close(kvmd))!=0){ |
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errf("Failed to close kvm (%m)"); |
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return NULL; |
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} |
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if((setegid(gid))!=0){ |
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errf("Failed to lose gid kmem (%m)"); |
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exit(1); |
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return NULL; |
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} |
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pagesize=getpagesize(); |
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swaptotal=((((long)swapinfo.ksw_total)*pagesize)/1024)/1024; |
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swapused=((((long)swapinfo.ksw_used)*pagesize)/1024)/1024; |
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swapfree=swaptotal-swapused; |
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#endif |
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if((xml_swap_stats=strf("<swap><total>%ld</total><used>%ld</used><free>%ld</free></swap>", swaptotal, swapused, swapfree)) == NULL){ |
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errf("strf failed (%m)"); |
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return NULL; |
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} |
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return xml_swap_stats; |
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} |
