Annotation of /trunk/mkinitrd-magellan/busybox/util-linux/dmesg.c
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Revision 532 -
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Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months 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 | niro | 532 | /* 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 | } |