40 lines
682 B
C
40 lines
682 B
C
|
#include <sys/param.h>
|
||
|
|
#include <sys/sysctl.h>
|
||
|
|
#include <sys/msgbuf.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
int
|
||
|
|
syslog_size(void)
|
||
|
|
{
|
||
|
|
int mib[2], msgbufsize;
|
||
|
|
size_t len;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
mib[0] = CTL_KERN;
|
||
|
|
mib[1] = KERN_MSGBUFSIZE;
|
||
|
|
len = sizeof(msgbufsize);
|
||
|
|
ret = sysctl(mib, 2, &msgbufsize, &len, NULL, 0);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
msgbufsize += sizeof(struct msgbuf) - 1;
|
||
|
|
return msgbufsize;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
syslog_read(void *buf, size_t n)
|
||
|
|
{
|
||
|
|
int mib[2];
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
memset(buf, 0, n);
|
||
|
|
mib[0] = CTL_KERN;
|
||
|
|
mib[1] = KERN_MSGBUF;
|
||
|
|
ret = sysctl(mib, 2, buf, &n, NULL, 0);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
memmove(buf, ((struct msgbuf *)buf)->msg_bufc, n);
|
||
|
|
return n;
|
||
|
|
}
|