Weird behavior with /dev/mem

Daniel C. Sobral Fri, 31 Oct 2003 12:36:44 -0800

Weird thing. I updated my system today (October 31), and now I can't list routes from syscons. But I still can list routes from Konsole, on X. Following a suggestion by Genesys, I checked permissions of /dev/mem and netstat and... for some reason, I can't stat /dev/mem under syscons! Here are a couple of typescripts I got:

[0] [EMAIL PROTECTED]:/opt/home/dcs$ cat from_konsole
Script started on Fri Oct 31 17:25:04 2003
[EMAIL PROTECTED]:/opt/home/dcs$ ls -ld /dev
dr-xr-xr-x  4 root  wheel  512 Oct 31 13:56 /dev
[EMAIL PROTECTED]:/opt/home/dcs$ ls -l /dev/mem
crw-r-----  1 root  kmem    2,   0 Oct 31 15:54 /dev/mem
[EMAIL PROTECTED]:/opt/home/dcs$ ls -l /usr/bin/netstat
-r-xr-sr-x  1 root  kmem  108664 Oct 31 13:18 /usr/bin/netstat
[EMAIL PROTECTED]:/opt/home/dcs$ netstat -nr
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            10.0.11.1          UGSc        0        0   fxp0
10/16              link#1             UC          0        0   fxp0
10.0.2.72          00:04:23:2a:13:7b  UHLW        0        1   fxp0    881
10.0.11.1          00:10:54:cd:58:40  UHLW       28        0   fxp0   1197
10.0.12.131        00:01:30:26:e0:00  UHLW        0        0   fxp0   1186
10.0.14.20         00:02:55:58:22:0a  UHLW        6    39928   fxp0    975
127.0.0.1          127.0.0.1          UH          0        6    lo0
[EMAIL PROTECTED]:/opt/home/dcs$ exit
exit

Script done on Fri Oct 31 17:25:20 2003
[0] [EMAIL PROTECTED]:/opt/home/dcs$ cat from_syscons
Script started on Fri Oct 31 17:26:01 2003
[EMAIL PROTECTED]:/root$ ls -ld /dev
dr-xr-xr-x  4 root  wheel  512 Oct 31 13:56 /dev
[EMAIL PROTECTED]:/root$ ls -l /dev/mem
ls: /dev/mem: Permission denied
[EMAIL PROTECTED]:/root$ ls -l /usr/bin/netstat
-r-xr-sr-x  1 root  kmem  108664 Oct 31 13:18 /usr/bin/netstat
[EMAIL PROTECTED]:/root$ netstat -nr
netstat: kvm not available
Routing tables
rt_tables: symbol not in namelist
[EMAIL PROTECTED]:/root$ exit
exit

Script done on Fri Oct 31 17:26:18 2003
[0] [EMAIL PROTECTED]:/opt/home/dcs$ which ls
/bin/ls
[0] [EMAIL PROTECTED]:/opt/home/dcs$ type ls
ls is aliased to `ls -G'
[0] [EMAIL PROTECTED]:/opt/home/dcs$ unalias ls
[0] [EMAIL PROTECTED]:/opt/home/dcs$ ls -l /dev/mem
crw-r-----  1 root  kmem    2,   0 Oct 31 15:54 /dev/mem

I'm CCing phk on the grounds of Mr Devfs, and Sam as I blamed the networking code earlier... :-)

--
Daniel C. Sobral                   (8-DCS)
Gerencia de Operacoes
Divisao de Comunicacao de Dados
Coordenacao de Seguranca
VIVO Centro Oeste Norte
Fones: 55-61-313-7654/Cel: 55-61-9618-0904
E-mail: [EMAIL PROTECTED]
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Outros:
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Ignisecond, n.:
        The overlapping moment of time when the hand is locking the car
door even as the brain is saying, "my keys are in there!"
                -- Rich Hall, "Sniglets"

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Weird behavior with /dev/mem

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