/* $Id: osdep.c,v 1.7 2003/01/23 18:19:55 in2 Exp $ */
#include "bbs.h"
#ifdef Linux
#include <sys/types.h>
#include <string.h>
/* size_t
* strlcat(char *dst, const char *src, size_t size);
*/
/*
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Appends src to string dst of size siz (unlike strncat, siz is the
* full size of dst, not space left). At most siz-1 characters
* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
* Returns strlen(src) + MIN(siz, strlen(initial dst)).
* If retval >= siz, truncation occurred.
*/
size_t
strlcat(dst, src, siz)
char *dst;
const char *src;
size_t siz;
{
char *d = dst;
const char *s = src;
size_t n = siz;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
/* ------------------------------------------------------------------------ */
/* size_t
* strlcpy(char *dst, const char *src, size_t size);
*/
/*
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copy src to string dst of size siz. At most siz-1 characters
* will be copied. Always NUL terminates (unless siz == 0).
* Returns strlen(src); if retval >= siz, truncation occurred.
*/
size_t strlcpy(dst, src, siz)
char *dst;
const char *src;
size_t siz;
{
char *d = dst;
const char *s = src;
size_t n = siz;
/* Copy as many bytes as will fit */
if (n != 0 && --n != 0) {
do {
if ((*d++ = *s++) == 0)
break;
} while (--n != 0);
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0) {
if (siz != 0)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}
#endif
#if __FreeBSD__
#include <kvm.h>
int
cpuload(char *str)
{
double l[3] = {-1, -1, -1};
if (getloadavg(l, 3) != 3)
l[0] = -1;
if (str) {
if (l[0] != -1)
sprintf(str, " %.2f %.2f %.2f", l[0], l[1], l[2]);
else
strcpy(str, " (unknown) ");
}
return (int)l[0];
}
double
swapused(long *total, long *used)
{
double percent = -1;
kvm_t *kd;
struct kvm_swap swapinfo;
int pagesize;
kd = kvm_open(NULL, NULL, NULL, O_RDONLY, NULL);
if (kd) {
if (kvm_getswapinfo(kd, &swapinfo, 1, 0) == 0) {
pagesize = getpagesize();
*total = swapinfo.ksw_total * pagesize;
*used = swapinfo.ksw_used * pagesize;
if (*total != 0)
percent = (double)*used / (double)*total;
}
kvm_close(kd);
}
return percent;
}
#else
int
cpuload(char *str)
{
double l[3] = {-1, -1, -1};
FILE *fp;
if ((fp = fopen("/proc/loadavg", "r"))) {
if (fscanf(fp, "%lf %lf %lf", &l[0], &l[1], &l[2]) != 3)
l[0] = -1;
fclose(fp);
}
if (str) {
if (l[0] != -1)
snprintf(str, sizeof(str), " %.2f %.2f %.2f", l[0], l[1], l[2]);
else
strcpy(str, " (unknown) ");
}
return (int)l[0];
}
double
swapused(long *total, long *used)
{
double percent = -1;
char buf[101];
FILE *fp;
if ((fp = fopen("/proc/meminfo", "r"))) {
while (fgets(buf, 100, fp) && buf[0] != 'S');
if (sscanf(buf + 6, "%ld %ld", total, used) == 2)
if (*total != 0)
percent = (double)*used / (double)*total;
fclose(fp);
}
return percent;
}
#endif
