1 files changed, 99 insertions, 0 deletions
diff --git a/busybox/util-linux/dmesg.c b/busybox/util-linux/dmesg.c
new file mode 100644
index 0000000..2ca8827
--- /dev/null
+++ b/busybox/util-linux/dmesg.c
@@ -0,0 +1,99 @@
+/* vi: set sw=4 ts=4: */
+/* 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)
+ * Larger buffersize 3 June 1998 by Nicolai Langfeldt, based on a patch
+ * by Peeter Joot.  This was also suggested by John Hudson.
+ * 1999-02-22 Arkadiusz Miśkiewicz <misiek@misiek.eu.org>
+ * - added Native Language Support
+ *
+ * from util-linux -- adapted for busybox by
+ * Erik Andersen <andersen@codepoet.org>. I ripped out Native Language
+ * Support, replaced getopt, added some gotos for redundant stuff.
+ *
+ * Audited and cleaned up on 7 March 2003 to reduce size of
+ * check error handling by Erik Andersen <andersen@codepoet.org>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <errno.h>
+#include <sys/klog.h>
+
+#include "busybox.h"
+
+int dmesg_main(int argc, char **argv)
+{
+	char *buf
+#ifdef CONFIG_FEATURE_CLEAN_UP
+		= NULL
+#endif
+		;
+	int bufsize = 8196;
+	int i, n;
+	int level = 0;
+	int lastc;
+	int cmd = 3;
+
+	while ((i = getopt(argc, argv, "cn:s:")) > 0) {
+		switch (i) {
+			case 'c':
+				cmd = 4;
+				break;
+			case 'n':
+				cmd = 8;
+				level = bb_xgetlarg(optarg, 10, 0, 10);
+				break;
+			case 's':
+				/* I think a 512k max kernel ring buffer is big enough for
+				 * anybody, as the default is 16k...  Could be wrong though.
+				 * If so I'm sure I'll hear about it by the enraged masses*/
+				bufsize = bb_xgetlarg(optarg, 10, 4096, 512*1024);
+				break;
+			default:
+				bb_show_usage();
+		}
+	}
+
+	if (optind < argc) {
+		bb_show_usage();
+	}
+
+	if (cmd == 8) {
+		if (klogctl(cmd, NULL, level) < 0)
+			goto die_the_death;
+		goto all_done;
+	}
+
+	buf = xmalloc(bufsize);
+	if ((n = klogctl(cmd, buf, bufsize)) < 0)
+		goto die_the_death;
+
+	lastc = '\n';
+	for (i = 0; i < n; i++) {
+		if (lastc == '\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');
+all_done:
+#ifdef CONFIG_FEATURE_CLEAN_UP
+	if (buf) {
+		free(buf);
+	}
+#endif
+	return EXIT_SUCCESS;
+die_the_death:
+	bb_perror_nomsg_and_die();
+}