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allow people to display dmesg output without syslog levels

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This commit is contained in:
Mike Frysinger 2006-07-27 11:18:36 +00:00
parent 0b7dfb5ae7
commit eac0c06938
2 changed files with 39 additions and 3 deletions
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20
util-linux/Config.in
View File

@ -17,6 +17,26 @@ config CONFIG_DMESG
are also logged to the system console. Enable this option if you
wish to enable the 'dmesg' utility.
config CONFIG_FEATURE_DMESG_PRETTY
bool "pretty dmesg output"
default y
depends on CONFIG_DMESG
help
If you wish to scrub the syslog level from the output, say 'Y' here.
The syslog level is a string prefixed to every line with the form "<#>".
With this option you will see:
# dmesg
Linux version 2.6.17.4 .....
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
Without this option you will see:
# dmesg
<5>Linux version 2.6.17.4 .....
<6>BIOS-provided physical RAM map:
<6> BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
config CONFIG_FBSET
bool "fbset"
default n

22
util-linux/dmesg.c
View File

@ -1,9 +1,9 @@
/* vi: set sw=4 ts=4: */
/*
*
* dmesg - display/control kernel ring buffer.
*
* Copyring 2006 Rob Landley <rob@landley.net>
* Copyright 2006 Rob Landley <rob@landley.net>
* Copyright 2006 Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
@ -28,8 +28,24 @@ int dmesg_main(int argc, char *argv[])
buf = xmalloc(len);
if (0 > (len = klogctl(3 + (flags & 1), buf, len)))
bb_perror_msg_and_die("klogctl");
write(1,buf,len);
#ifdef CONFIG_FEATURE_DMESG_PRETTY
{
char newline = '\n';
int i;
for (i=0; i<len; ++i) {
if (newline == '\n' && buf[i] == '<')
i += 3; /* skip <#> */
putchar(newline=buf[i]);
}
if (newline != '\n') putchar('\n');
}
#else
write(1, buf, len);
if (len && buf[len-1]!='\n') putchar('\n');
#endif
if (ENABLE_FEATURE_CLEAN_UP) free(buf);
}
return 0;