3 * dmesg - display/control kernel ring buffer.
5 * Copyring 2006 Rob Landley <rob@landley.net>
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
14 int dmesg_main(int argc, char *argv[])
17 int flags = bb_getopt_ulflags(argc, argv, "c:s:n:", &size, &level);
20 if(klogctl(8, NULL, bb_xgetlarg(size, 10, 0, 10)))
21 bb_perror_msg_and_die("klogctl");
26 len = (flags & 2) ? bb_xgetlarg(size, 10, 4096, INT_MAX) : 16384;
28 if (0 > (len = klogctl(3 + (flags & 1), buf, len)))
29 bb_perror_msg_and_die("klogctl");
31 if (len && buf[len-1]!='\n') putchar('\n');