mirror of
https://github.com/sheumann/hush.git
synced 2024-12-21 23:29:34 +00:00
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
*
|
|
* dmesg - display/control kernel ring buffer.
|
|
*
|
|
* Copyright 2006 Rob Landley <rob@landley.net>
|
|
* Copyright 2006 Bernhard Fischer <rep.nop@aon.at>
|
|
*
|
|
* Licensed under GPLv2, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#include <sys/klog.h>
|
|
#include "libbb.h"
|
|
|
|
int dmesg_main(int argc, char **argv);
|
|
int dmesg_main(int argc, char **argv)
|
|
{
|
|
char *size, *level;
|
|
int flags = getopt32(argc, argv, "cs:n:", &size, &level);
|
|
|
|
if (flags & 4) {
|
|
if (klogctl(8, NULL, xatoul_range(level, 0, 10)))
|
|
bb_perror_msg_and_die("klogctl");
|
|
} else {
|
|
int len;
|
|
char *buf;
|
|
|
|
len = (flags & 2) ? xatoul_range(size, 2, INT_MAX) : 16384;
|
|
buf = xmalloc(len);
|
|
if (0 > (len = klogctl(3 + (flags & 1), buf, len)))
|
|
bb_perror_msg_and_die("klogctl");
|
|
|
|
// Skip <#> at the start of lines, and make sure we end with a newline.
|
|
|
|
if (ENABLE_FEATURE_DMESG_PRETTY) {
|
|
int last = '\n';
|
|
int in;
|
|
|
|
for (in = 0; in<len;) {
|
|
if (last == '\n' && buf[in] == '<') in += 3;
|
|
else putchar(last = buf[in++]);
|
|
}
|
|
if (last != '\n') putchar('\n');
|
|
} else {
|
|
write(1,buf,len);
|
|
if (len && buf[len-1]!='\n') putchar('\n');
|
|
}
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP) free(buf);
|
|
}
|
|
|
|
return 0;
|
|
}
|