On Fri, Sep 17, 2010 at 10:36 PM, Kostik Belousov <[email protected]> wrote:
> On Fri, Sep 17, 2010 at 09:55:26PM +0200, Norberto Lopes wrote:
>> Hi.
>> I've been taking a look at ktrace and kdump in order to get (1) familiar
>> with the sources and (2) to finally try to give back something to the
>> community.
>>
>> So far from what I've seen, and after reading this thread
>> http://lists.freebsd.org/pipermail/freebsd-arch/2006-April/005107.html it
>> seems that most of those points got done.
>>
>> To warm up I changed the output of the stat structure in order to provide me
>> with the device name (something I actually find useful for me sometimes)
>>
>> Instead of:
>> 22596 cat STRU struct stat {dev=89, ino=3320836, mode=-r--r--r-- ,
>> nlink=1, uid=0, gid=0, atime=1284725358, stime=1284485510, ctime=1284485510,
>> birthtime=1284485509, size=1172220, blksize=16384, blocks=2336,
>> flags=0x20000 }
>>
>> I get this now (including major and minor):
>> 22596 cat STRU struct stat {dev=<id=89:M=0:m=89> (/dev/ad4s1a),
>> ino=3320836, mode=-r--r--r-- , nlink=1, uid=0, gid=0, atime=1284725358,
>> stime=1284485510, ctime=1284485510, birthtime=1284485509, size=1172220,
>> blksize=16384, blocks=2336, flags=0x20000 }
>>
>> I wouldn't mind having someone help me whenever and if I get stuck on the
>> technical side (*wink* Alexander Leidinger *wink*) and also to give me more
>> insight on what the road to help in this should be.
>>
>> P.S.: I'm still going through "man style" hence no patch attached. If anyone
>> finds this one useful, I'll reply with the patch though.
>>
> How do you look up the device name by st_dev ? Note that the number is
> generated by devfs at the moment of cdev creation. It is only valid on
> the machine where stat(2) is done, and only due to the next reboot.
>
Through a really ugly hack...
opendir("/dev")
readdir("/dev")
go through them and find the one...
Yes, I know, painful and ugly, but as I usually use kdump with no
reboots between analysis (I hardly ever reboot actually), and because
I find it exhausting to keep going back to look up the device name,
this kept me happy enough. :)
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "[email protected]"
