| 1 |
/* |
| 2 |
* i-scream libstatgrab |
| 3 |
* http://www.i-scream.org |
| 4 |
* Copyright (C) 2000-2004 i-scream |
| 5 |
* |
| 6 |
* This library is free software; you can redistribute it and/or |
| 7 |
* modify it under the terms of the GNU Lesser General Public |
| 8 |
* License as published by the Free Software Foundation; either |
| 9 |
* version 2.1 of the License, or (at your option) any later version. |
| 10 |
* |
| 11 |
* This library is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 |
* Lesser General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU Lesser General Public |
| 17 |
* License along with this library; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 19 |
* 02111-1307 USA |
| 20 |
* |
| 21 |
* $Id: swap_stats.c,v 1.20 2004/04/07 21:08:40 tdb Exp $ |
| 22 |
*/ |
| 23 |
|
| 24 |
#ifdef HAVE_CONFIG_H |
| 25 |
#include "config.h" |
| 26 |
#endif |
| 27 |
|
| 28 |
#include "statgrab.h" |
| 29 |
#include "tools.h" |
| 30 |
#ifdef SOLARIS |
| 31 |
#include <sys/stat.h> |
| 32 |
#include <sys/swap.h> |
| 33 |
#include <unistd.h> |
| 34 |
#endif |
| 35 |
#if defined(LINUX) || defined(CYGWIN) |
| 36 |
#include <stdio.h> |
| 37 |
#include <string.h> |
| 38 |
#endif |
| 39 |
#if defined(FREEBSD) || defined(DFBSD) |
| 40 |
#ifdef FREEBSD5 |
| 41 |
#include <sys/param.h> |
| 42 |
#include <sys/sysctl.h> |
| 43 |
#include <sys/user.h> |
| 44 |
#else |
| 45 |
#include <sys/types.h> |
| 46 |
#include <kvm.h> |
| 47 |
#endif |
| 48 |
#include <unistd.h> |
| 49 |
#endif |
| 50 |
#if defined(NETBSD) || defined(OPENBSD) |
| 51 |
#include <sys/param.h> |
| 52 |
#include <sys/time.h> |
| 53 |
#include <uvm/uvm.h> |
| 54 |
#include <unistd.h> |
| 55 |
#endif |
| 56 |
|
| 57 |
sg_swap_stats *sg_get_swap_stats(){ |
| 58 |
|
| 59 |
static sg_swap_stats swap_stat; |
| 60 |
|
| 61 |
#ifdef SOLARIS |
| 62 |
struct anoninfo ai; |
| 63 |
int pagesize; |
| 64 |
#endif |
| 65 |
#if defined(LINUX) || defined(CYGWIN) |
| 66 |
FILE *f; |
| 67 |
char *line_ptr; |
| 68 |
unsigned long long value; |
| 69 |
#endif |
| 70 |
#if defined(FREEBSD) || defined(DFBSD) |
| 71 |
int pagesize; |
| 72 |
#ifdef FREEBSD5 |
| 73 |
struct xswdev xsw; |
| 74 |
int mib[16], n; |
| 75 |
size_t mibsize, size; |
| 76 |
#else |
| 77 |
struct kvm_swap swapinfo; |
| 78 |
kvm_t *kvmd; |
| 79 |
#endif |
| 80 |
#endif |
| 81 |
#if defined(NETBSD) || defined(OPENBSD) |
| 82 |
struct uvmexp *uvm; |
| 83 |
#endif |
| 84 |
|
| 85 |
#ifdef SOLARIS |
| 86 |
if((pagesize=sysconf(_SC_PAGESIZE)) == -1){ |
| 87 |
sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE"); |
| 88 |
return NULL; |
| 89 |
} |
| 90 |
if (swapctl(SC_AINFO, &ai) == -1) { |
| 91 |
sg_set_error_with_errno(SG_ERROR_SWAPCTL, NULL); |
| 92 |
return NULL; |
| 93 |
} |
| 94 |
swap_stat.total = (long long)ai.ani_max * (long long)pagesize; |
| 95 |
swap_stat.used = (long long)ai.ani_resv * (long long)pagesize; |
| 96 |
swap_stat.free = swap_stat.total - swap_stat.used; |
| 97 |
#endif |
| 98 |
#if defined(LINUX) || defined(CYGWIN) |
| 99 |
if ((f = fopen("/proc/meminfo", "r")) == NULL) { |
| 100 |
sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/meminfo"); |
| 101 |
return NULL; |
| 102 |
} |
| 103 |
|
| 104 |
while ((line_ptr = sg_f_read_line(f, "")) != NULL) { |
| 105 |
if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) { |
| 106 |
continue; |
| 107 |
} |
| 108 |
value *= 1024; |
| 109 |
|
| 110 |
if (strncmp(line_ptr, "SwapTotal:", 10) == 0) { |
| 111 |
swap_stat.total = value; |
| 112 |
} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) { |
| 113 |
swap_stat.free = value; |
| 114 |
} |
| 115 |
} |
| 116 |
|
| 117 |
fclose(f); |
| 118 |
swap_stat.used = swap_stat.total - swap_stat.free; |
| 119 |
#endif |
| 120 |
#if defined(FREEBSD) || defined(DFBSD) |
| 121 |
pagesize=getpagesize(); |
| 122 |
|
| 123 |
#ifdef FREEBSD5 |
| 124 |
swap_stat.total = 0; |
| 125 |
swap_stat.used = 0; |
| 126 |
|
| 127 |
mibsize = sizeof mib / sizeof mib[0]; |
| 128 |
if (sysctlnametomib("vm.swap_info", mib, &mibsize) < 0) { |
| 129 |
sg_set_error_with_errno(SG_ERROR_SYSCTLNAMETOMIB, |
| 130 |
"vm.swap_info"); |
| 131 |
return NULL; |
| 132 |
} |
| 133 |
for (n = 0; ; ++n) { |
| 134 |
mib[mibsize] = n; |
| 135 |
size = sizeof xsw; |
| 136 |
if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, NULL) < 0) { |
| 137 |
break; |
| 138 |
} |
| 139 |
if (xsw.xsw_version != XSWDEV_VERSION) { |
| 140 |
sg_set_error(SG_ERROR_XSW_VER_MISMATCH, NULL); |
| 141 |
return NULL; |
| 142 |
} |
| 143 |
swap_stat.total += (long long) xsw.xsw_nblks; |
| 144 |
swap_stat.used += (long long) xsw.xsw_used; |
| 145 |
} |
| 146 |
if (errno != ENOENT) { |
| 147 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "vm.swap_info"); |
| 148 |
return NULL; |
| 149 |
} |
| 150 |
#else |
| 151 |
if((kvmd = sg_get_kvm()) == NULL){ |
| 152 |
return NULL; |
| 153 |
} |
| 154 |
if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){ |
| 155 |
sg_set_error(SG_ERROR_KVM_GETSWAPINFO, NULL); |
| 156 |
return NULL; |
| 157 |
} |
| 158 |
|
| 159 |
swap_stat.total = (long long)swapinfo.ksw_total; |
| 160 |
swap_stat.used = (long long)swapinfo.ksw_used; |
| 161 |
#endif |
| 162 |
swap_stat.total *= pagesize; |
| 163 |
swap_stat.used *= pagesize; |
| 164 |
swap_stat.free = swap_stat.total - swap_stat.used; |
| 165 |
#endif |
| 166 |
#if defined(NETBSD) || defined(OPENBSD) |
| 167 |
if ((uvm = sg_get_uvmexp()) == NULL) { |
| 168 |
return NULL; |
| 169 |
} |
| 170 |
|
| 171 |
swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages; |
| 172 |
swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse; |
| 173 |
swap_stat.free = swap_stat.total - swap_stat.used; |
| 174 |
#endif |
| 175 |
|
| 176 |
return &swap_stat; |
| 177 |
|
| 178 |
} |
