Re: unable to use lsof on NetBSD 5

[matthew sporleder <msporleder%gmail.com@localhost>]

On Sun, Jan 3, 2010 at 11:13 AM, Klaus Heinz 
<k.heinz%janzehn.kh-22.de@localhost> wrote:
> matthew sporleder wrote:
>
>> NetBSD fester 5.0.1 NetBSD 5.0.1 (GENERIC) #0: Thu Jul 30 01:39:11 UTC
>> 2009 
>>  builds%b8.netbsd.org@localhost:/home/builds/ab/netbsd-5-0-1-RELEASE/i386/200907292356Z-obj/home/builds/ab/netbsd-5-0-1-RELEASE/src/sys/arch/i386/compile/GENERIC
>> i386
>
> Using the same kernel it does not work for me. The differences to a
> working lsof starts here:
>
> working:
>   918      1 lsof     open("/dev/kmem", 0, 0)     = 5
>   918      1 lsof     fcntl(0x5, 0x2, 0x1)        = 0
>   918      1 lsof     open("/dev/drum", 0, 0)     = 6
>   918      1 lsof     fcntl(0x6, 0x2, 0x1)        = 0
>   918      1 lsof     pread(0x6, 0xbfbfe878, 0x20, 0, 0, 0) = 32
>   .....
>
> failing:
>  1848      1 lsof     open("/dev/kmem", 0, 0)     = 5
>  1848      1 lsof     fcntl(0x5, 0x2, 0x1)        = 0
>  1848      1 lsof     open("/dev/drum", 0, 0)     Err#6 ENXIO
>  1848      1 lsof     issetugid()                 = 1
>  1848      1 lsof     issetugid()                 = 1
>  1848      1 lsof     open("/dev/ksyms", 0, 0xbfbfd884) Err#2 ENOENT
>
> What is /dev/drum and why can the call to open() fail?
> I read drum(4) but it does not really tell me anything I understand. The
> other resource I found [1] does not apply here.
>
>  # ls -al /dev/drum
>  crw-r-----  1 root  kmem  4, 0 Oct 30 19:20 /dev/drum
>
> open(2) says
>     [ENXIO]         The named file is a character special or block special
>                     file, and the device associated with this special file
>                     does not exist, or the named file is a FIFO,
>                     O_NONBLOCK and O_WRONLY is set and no process has the
>                     file open for reading.
>
> From this I conclude the "device" associated with /dev/drum does not
> exist. Could this be related to
>  # swapctl -l
>  Device      1K-blocks     Used    Avail Capacity  Priority
>  /dev/raid0b   1048576        0  1048576     0%    0
> ?
>


Is your lsof sgid?
-rwxr-sr-x  1 root  kmem  114200 Oct 15 00:18 /usr/pkg/sbin/lsof