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#include "internal.h"
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
/* dmesg.c -- Print out the contents of the kernel ring buffer
* Created: Sat Oct 9 16:19:47 1993
* Revised: Thu Oct 28 21:52:17 1993 by faith@cs.unc.edu
* Copyright 1993 Theodore Ts'o (tytso@athena.mit.edu)
* This program comes with ABSOLUTELY NO WARRANTY.
* Modifications by Rick Sladkey (jrs@world.std.com)
* from util-linux; adapted for busybox
*/
#include <linux/unistd.h>
#include <stdio.h>
#include <getopt.h>
#define __NR_klog __NR_syslog
#if defined(__GLIBC__)
#include <sys/klog.h>
#define klog klogctl
#else
static inline _syscall3(int,klog,int,type,char *,b,int,len)
#endif /* __GLIBC__ */
const char dmesg_usage[] = "dmesg";
int
dmesg_main(struct FileInfo * info, int argc, char * * argv)
{
char buf[4096];
int i;
int n;
int c;
int level = 0;
int lastc;
int cmd = 3;
while ((c = getopt( argc, argv, "cn:" )) != EOF) {
switch (c) {
case 'c':
cmd = 4;
break;
case 'n':
cmd = 8;
level = atoi(optarg);
break;
case '?':
default:
usage(dmesg_usage);
exit(1);
}
}
argc -= optind;
argv += optind;
if (argc > 1) {
usage(dmesg_usage);
exit(1);
}
if (cmd == 8) {
n = klog( cmd, NULL, level );
if (n < 0) {
perror( "klog" );
exit( 1 );
}
exit( 0 );
}
n = klog( cmd, buf, sizeof( buf ) );
if (n < 0) {
perror( "klog" );
exit( 1 );
}
lastc = '\n';
for (i = 0; i < n; i++) {
if ((i == 0 || buf[i - 1] == '\n') && buf[i] == '<') {
i++;
while (buf[i] >= '0' && buf[i] <= '9')
i++;
if (buf[i] == '>')
i++;
}
lastc = buf[i];
putchar( lastc );
}
if (lastc != '\n')
putchar( '\n' );
return 0;
}
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