Imported from util-linux-2.2 tarball.

1 files changed, 88 insertions, 0 deletions

diff --git a/sys-utils/dmesg.c b/sys-utils/dmesg.c
new file mode 100644
index 000000000..880528531
--- /dev/null
+++ b/sys-utils/dmesg.c
@@ -0,0 +1,88 @@
+/* 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)
+ */
+
+#include <linux/unistd.h>
+#include <stdio.h>
+#include <getopt.h>
+
+#define __NR_klog __NR_syslog
+
+static inline _syscall3(int,klog,int,type,char *,b,int,len)
+
+static char *progname;
+
+usage()
+{
+   fprintf( stderr, "Usage: %s [-c] [-n level]\n", progname );
+}
+
+int main( int argc, char *argv[] )
+{
+   char buf[4096];
+   int  i;
+   int  n;
+   int  c;
+   int  level;
+   int  lastc;
+   int  cmd = 3;
+
+   progname = argv[0];
+   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();
+	 exit(1);
+      }
+   }
+   argc -= optind;
+   argv += optind;
+   
+   if (argc > 1) {
+      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;
+}