Tuesday, February 28, 2012

Linux like dmesg in Freebsd

UPDATE:  this patch is applied to Freebsd repository on  10 May 2013

In my previous post, I was talking about the "dmesg -c" equivalent in FreeBSD. Simply it was a sysctl command. So, I decided to simply change FreeBSD dmesg command and make it act like in as Linux. All you have to do is download my patch and apply it as shown below.I was tested the patch on FreeBSD 9 btw.
mybsd# pwd
mybsd# patch < dmesg.patch 
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
|--- dmesg.c.org        2012-01-03 19:04:44.000000000 +0200
|+++ dmesg.c    2012-02-28 11:36:22.000000000 +0200
Patching file dmesg.c using Plan A...
Hunk #1 succeeded at 81.
Hunk #2 succeeded at 194.
Hunk #3 succeeded at 204.
mybsd# make 
Warning: Object directory not changed from original /usr/src/sbin/dmesg
cc -O2 -pipe  -std=gnu99 -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls -Wold-style-definition -Wno-pointer-sign -c dmesg.c
cc -O2 -pipe  -std=gnu99 -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls -Wold-style-definition -Wno-pointer-sign  -o dmesg dmesg.o -lkvm