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 000000000..2ca882714
--- /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 Mi¶kiewicz <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();
+}