116 lines
2.2 KiB
C
116 lines
2.2 KiB
C
/* dmesg.c -- Print out the contents of the kernel ring buffer
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* Created: Sat Oct 9 16:19:47 1993
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* Revised: Thu Oct 28 21:52:17 1993 by faith@cs.unc.edu
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* Copyright 1993 Theodore Ts'o (tytso@athena.mit.edu)
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* This program comes with ABSOLUTELY NO WARRANTY.
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* Modifications by Rick Sladkey (jrs@world.std.com)
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* Larger buffersize 3 June 1998 by Nicolai Langfeldt, based on a patch
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* by Peeter Joot. This was also suggested by John Hudson.
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* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
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* - added Native Language Support
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*
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*/
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#include <linux/unistd.h>
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#include <stdio.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include "nls.h"
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#if __GNU_LIBRARY__ < 5
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#ifndef __alpha__
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# define __NR_klogctl __NR_syslog
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static inline _syscall3(int, klogctl, int, type, char *, b, int, len);
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#else /* __alpha__ */
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#define klogctl syslog
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#endif
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#else
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# include <sys/klog.h>
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#endif
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static char *progname;
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void
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usage()
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{
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fprintf( stderr, _("Usage: %s [-c] [-n level] [-s bufsize]\n"), progname );
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}
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int main( int argc, char *argv[] )
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{
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char *buf;
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int bufsize=8196;
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int i;
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int n;
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int c;
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int level = 0;
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int lastc;
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int cmd = 3;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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progname = argv[0];
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while ((c = getopt( argc, argv, "cn:s:" )) != EOF) {
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switch (c) {
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case 'c':
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cmd = 4;
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break;
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case 'n':
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cmd = 8;
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level = atoi(optarg);
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break;
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case 's':
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bufsize = atoi(optarg);
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break;
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case '?':
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default:
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usage();
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exit(1);
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}
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}
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argc -= optind;
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argv += optind;
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if (argc > 1) {
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usage();
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exit(1);
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}
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if (cmd == 8) {
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n = klogctl( cmd, NULL, level );
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if (n < 0) {
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perror( "klogctl" );
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exit( 1 );
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}
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exit( 0 );
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}
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if (bufsize < 4096) bufsize = 4096;
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buf = (char*)malloc(bufsize);
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n = klogctl( cmd, buf, bufsize );
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if (n < 0) {
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perror( "klogctl" );
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exit( 1 );
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}
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lastc = '\n';
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for (i = 0; i < n; i++) {
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if ((i == 0 || buf[i - 1] == '\n') && buf[i] == '<') {
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i++;
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while (buf[i] >= '0' && buf[i] <= '9')
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i++;
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if (buf[i] == '>')
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i++;
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}
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lastc = buf[i];
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putchar( lastc );
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}
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if (lastc != '\n')
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putchar( '\n' );
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return 0;
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}
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