1 /* vi: set sw=4 ts=4: */
3 * dmesg - display/control kernel ring buffer.
5 * Copyright 2006 Rob Landley <rob@landley.net>
6 * Copyright 2006 Erik Andersen <andersen@codepoet.org>
8 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
15 int dmesg_main(int argc, char *argv[])
18 int flags = bb_getopt_ulflags(argc, argv, "cs:n:", &size, &level);
21 if (klogctl(8, NULL, bb_xgetlarg(level, 10, 0, 10)))
22 bb_perror_msg_and_die("klogctl");
27 len = (flags & 2) ? bb_xgetlarg(size, 10, 2, INT_MAX) : 16384;
29 if (0 > (len = klogctl(3 + (flags & 1), buf, len)))
30 bb_perror_msg_and_die("klogctl");
32 #ifdef CONFIG_FEATURE_DMESG_PRETTY
36 for (i=0; i<len; ++i) {
37 if (newline == '\n' && buf[i] == '<')
38 i += 3; /* skip <#> */
39 putchar(newline=buf[i]);
41 if (newline != '\n') putchar('\n');
45 if (len && buf[len-1]!='\n') putchar('\n');
48 if (ENABLE_FEATURE_CLEAN_UP) free(buf);