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#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <sys/klog.h>
static void usage(char *name)
{
fprintf(stderr, "usage: %s [-c]\n", name);
}
int main(int argc, char *argv[])
{
char *buf = NULL;
const char *p;
int c;
int bufsz = 0;
int cmd = 3; /* Read all messages remaining in the ring buffer */
int len = 0;
int opt;
int newline;
while ((opt = getopt(argc, argv, "c")) != -1) {
switch (opt) {
/* Read and clear all messages remaining in the ring buffer */
case 'c':
cmd = 4;
break;
case '?':
default:
usage(argv[0]);
exit(1);
}
}
if (!bufsz) {
len = klogctl(10, NULL, 0); /* Get size of log buffer */
if (len > 0)
bufsz = len;
}
if (bufsz) {
int sz = bufsz + 8;
buf = (char *)malloc(sz);
len = klogctl(cmd, buf, sz);
}
if (len < 0) {
perror("klogctl");
exit(1);
}
newline = 1;
p = buf;
while ((c = *p)) {
switch (c) {
case '\n':
newline = 1;
putchar(c);
p++;
break;
case '<':
if (newline && isdigit(p[1]) && p[2] == '>') {
p += 3;
break;
}
/* else fall through */
default:
newline = 0;
putchar(c);
p++;
}
}
if (!newline)
putchar('\n');
return 0;
}
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