2006-07-02 19:47:05 +00:00
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/* vi: set sw=4 ts=4: */
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/*
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2006-09-17 16:28:10 +00:00
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*
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2006-06-13 18:31:04 +00:00
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* dmesg - display/control kernel ring buffer.
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1999-10-19 20:03:34 +00:00
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*
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2006-07-27 16:40:55 +00:00
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* Copyright 2006 Rob Landley <rob@landley.net>
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* Copyright 2006 Bernhard Fischer <rep.nop@aon.at>
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2003-03-07 17:33:40 +00:00
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*
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2006-09-22 02:52:41 +00:00
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* Licensed under GPLv2, see file LICENSE in this tarball for details.
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1999-10-05 16:24:54 +00:00
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*/
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2006-06-13 18:31:04 +00:00
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#include <sys/klog.h>
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2007-05-31 22:42:12 +00:00
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#include "libbb.h"
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1999-10-12 22:26:06 +00:00
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2007-04-04 20:52:03 +00:00
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int dmesg_main(int argc, char **argv);
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int dmesg_main(int argc, char **argv)
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1999-10-05 16:24:54 +00:00
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{
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2006-06-13 18:31:04 +00:00
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char *size, *level;
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2007-08-18 15:32:12 +00:00
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int flags = getopt32(argv, "cs:n:", &size, &level);
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2006-06-13 18:31:04 +00:00
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if (flags & 4) {
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2006-10-08 12:49:22 +00:00
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if (klogctl(8, NULL, xatoul_range(level, 0, 10)))
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2006-06-13 18:31:04 +00:00
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bb_perror_msg_and_die("klogctl");
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} else {
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int len;
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char *buf;
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2006-10-08 12:49:22 +00:00
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len = (flags & 2) ? xatoul_range(size, 2, INT_MAX) : 16384;
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2006-06-13 18:31:04 +00:00
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buf = xmalloc(len);
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if (0 > (len = klogctl(3 + (flags & 1), buf, len)))
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bb_perror_msg_and_die("klogctl");
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2006-07-27 16:40:55 +00:00
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2006-09-17 16:28:10 +00:00
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// Skip <#> at the start of lines, and make sure we end with a newline.
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2006-07-27 16:40:55 +00:00
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if (ENABLE_FEATURE_DMESG_PRETTY) {
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int last = '\n';
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int in;
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for (in = 0; in<len;) {
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if (last == '\n' && buf[in] == '<') in += 3;
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else putchar(last = buf[in++]);
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}
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if (last != '\n') putchar('\n');
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} else {
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write(1,buf,len);
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if (len && buf[len-1]!='\n') putchar('\n');
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}
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if (ENABLE_FEATURE_CLEAN_UP) free(buf);
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2003-03-07 17:33:40 +00:00
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}
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2006-03-29 17:26:14 +00:00
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2006-06-13 18:31:04 +00:00
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return 0;
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1999-10-05 16:24:54 +00:00
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}
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