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