mirror of
https://github.com/sheumann/hush.git
synced 2024-08-27 03:29:05 +00:00
96 lines
1.8 KiB
C
96 lines
1.8 KiB
C
#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(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:
|
|
fprintf(stderr, "%s\n", dmesg_usage);
|
|
exit(1);
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc > 1) {
|
|
fprintf(stderr, "%s\n", 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;
|
|
}
|