Contents of /trunk/mkinitrd-magellan/busybox/util-linux/dmesg.c
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 1204 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * |
4 | * dmesg - display/control kernel ring buffer. |
5 | * |
6 | * Copyright 2006 Rob Landley <rob@landley.net> |
7 | * Copyright 2006 Bernhard Fischer <rep.nop@aon.at> |
8 | * |
9 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
10 | */ |
11 | |
12 | #include "busybox.h" |
13 | #include <unistd.h> |
14 | #include <sys/klog.h> |
15 | |
16 | int dmesg_main(int argc, char *argv[]) |
17 | { |
18 | char *size, *level; |
19 | int flags = getopt32(argc, argv, "cs:n:", &size, &level); |
20 | |
21 | if (flags & 4) { |
22 | if (klogctl(8, NULL, xatoul_range(level, 0, 10))) |
23 | bb_perror_msg_and_die("klogctl"); |
24 | } else { |
25 | int len; |
26 | char *buf; |
27 | |
28 | len = (flags & 2) ? xatoul_range(size, 2, INT_MAX) : 16384; |
29 | buf = xmalloc(len); |
30 | if (0 > (len = klogctl(3 + (flags & 1), buf, len))) |
31 | bb_perror_msg_and_die("klogctl"); |
32 | |
33 | // Skip <#> at the start of lines, and make sure we end with a newline. |
34 | |
35 | if (ENABLE_FEATURE_DMESG_PRETTY) { |
36 | int last = '\n'; |
37 | int in; |
38 | |
39 | for (in = 0; in<len;) { |
40 | if (last == '\n' && buf[in] == '<') in += 3; |
41 | else putchar(last = buf[in++]); |
42 | } |
43 | if (last != '\n') putchar('\n'); |
44 | } else { |
45 | write(1,buf,len); |
46 | if (len && buf[len-1]!='\n') putchar('\n'); |
47 | } |
48 | |
49 | if (ENABLE_FEATURE_CLEAN_UP) free(buf); |
50 | } |
51 | |
52 | return 0; |
53 | } |