source: trunk/mindi-busybox/util-linux/dmesg.c @ 956

Last change on this file since 956 was 821, checked in by bruno, 13 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 806 bytes
Line 
1/* vi: set ts=4:
2 *
3 * dmesg - display/control kernel ring buffer.
4 *
5 * Copyring 2006 Rob Landley <rob@landley.net>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10#include "busybox.h"
11#include <unistd.h>
12#include <sys/klog.h>
13
14int dmesg_main(int argc, char *argv[])
15{
16    char *size, *level;
17    int flags = bb_getopt_ulflags(argc, argv, "cs:n:", &size, &level);
18
19    if (flags & 4) {
20        if(klogctl(8, NULL, bb_xgetlarg(level, 10, 0, 10)))
21            bb_perror_msg_and_die("klogctl");
22    } else {
23        int len;
24        char *buf;
25
26        len = (flags & 2) ? bb_xgetlarg(size, 10, 2, INT_MAX) : 16384;
27        buf = xmalloc(len);
28        if (0 > (len = klogctl(3 + (flags & 1), buf, len)))
29            bb_perror_msg_and_die("klogctl");
30        write(1,buf,len);
31        if (len && buf[len-1]!='\n') putchar('\n');
32    }
33
34    return 0;
35}
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