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ID Category Severity Reproducibility Date Submitted Last Update
0003964 [BusyBox] Kernel Module Support minor always 07-06-08 10:33 09-28-08 16:22
Reporter mebarton View Status public  
Assigned To BusyBox
Priority normal Resolution no change required  
Status closed   Product Version
Summary 0003964: bug: who command not working
Description The who command print the following, but does not show the user info. Note that I has 3 users login. One on ssh server (dropbear) one on telnet and the console RS232 port.

~ # who
USER TTY IDLE TIME HOST
~ # ps
  PID USER VSZ STAT COMMAND
    1 root 1076 S init
    2 root 0 SW< [kthreadd]
    3 root 0 SW< [ksoftirqd/0]
    4 root 0 SW< [watchdog/0]
    5 root 0 SW< [events/0]
    6 root 0 SW< [khelper]
   46 root 0 SW< [kblockd/0]
   73 root 0 SW [pdflush]
   74 root 0 SW [pdflush]
   75 root 0 SW< [kswapd0]
  119 root 0 SW< [aio/0]
  139 root 0 SW< [mtdblockd]
  164 root 0 SW< [kondemand/0]
  174 root 0 SW< [rpciod/0]
  208 root 1072 S /sbin/syslogd
  211 root 1072 S /sbin/klogd
  218 daemon 696 S portmap
  224 root 0 SWN [jffs2_gcd_mtd3]
  252 root 804 S /usr/sbin/dnsmasq
  288 root 1076 S /usr/sbin/telnetd -l /bin/sh
  291 root 1084 S /usr/sbin/inetd
  294 root 1076 S /usr/sbin/httpd -h /www
  302 root 1364 S /usr/sbin/ntpd
  309 root 948 S /usr/sbin/dropbear
  314 nobody 1280 S proftpd: (accepting connections)
  316 root 1096 S -/bin/sh # Console
  753 root 1004 S /usr/sbin/dropbear
  754 mebarton 1092 S -sh # SSH user
  768 root 1096 S /bin/sh # Telnet user
  773 root 1076 R ps
~ #

SVN revision 22654 BusyBox v1.10.4 (2.6.24 and 2.6.24.4)

BusyBox v1.10.4 (2008-07-05 16:16:47 EDT) built-in shell (ash)
Enter 'help' for a list of built-in commands.

$ svn info
Path: .
URL: svn://uclibc.org/trunk/buildroot [^]
Repository Root: svn://uclibc.org [^]
Repository UUID: 69ca8d6d-28ef-0310-b511-8ec308f3f277
Revision: 22654
Node Kind: directory
Schedule: normal
Last Changed Author: correa
Last Changed Rev: 22654
Last Changed Date: 2008-07-05 11:14:11 -0400 (Sat, 05 Jul 2008)


$ uname -a
Linux ngw.example.net 2.6.24 0000001 Sat Jul 5 18:58:22 EDT 2008 avr32 unknown
Additional Information
Attached Files  busybox.config [^] (21,284 bytes) 07-07-08 08:12
 who.log [^] (793 bytes) 07-07-08 08:13

- Relationships

- Notes
(0009074)
vda
07-06-08 13:59

1. please attach busybox .config to this bug.

2. please run "strace -o who.log who" and attach resulting who.log file to this bug too.
 
(0009094)
mebarton
07-08-08 18:26

added the files
 
(0011744)
vda
09-20-08 09:34

who.log shows the problem:

execve("/usr/bin/who", ["who"], [/* 6 vars */]) = 0
ioctl(0, TCGETS, {B115200 opost isig icanon echo ...}) = 0
ioctl(1, TCGETS, {B115200 opost isig icanon echo ...}) = 0
getuid() = 0
open("/var/run/utmp", O_RDWR) = -1 ENOENT (No such file or directory)
open("/var/run/utmp", O_RDONLY) = -1 ENOENT (No such file or directory)
close(-1) = -1 EBADF (Bad file descriptor)
write(1, "USER TTY IDLE TI"..., 51) = 51
open("/var/run/utmp", O_RDWR) = -1 ENOENT (No such file or directory)
open("/var/run/utmp", O_RDONLY) = -1 ENOENT (No such file or directory)
close(-1) = -1 EBADF (Bad file descriptor)
_exit(0) = ?

"who" can't figure out who is logged on because "/var/run/utmp" doesn't exist. Probably because "/var/run" does not exist either, and therefore getty and such can't recreate "/var/run/utmp".
 
(0012354)
vda
09-28-08 16:22

Probably a problem on the system (missing /var/run?)
 

- Issue History
Date Modified Username Field Change
07-06-08 10:33 mebarton New Issue
07-06-08 10:33 mebarton Status new => assigned
07-06-08 10:33 mebarton Assigned To  => BusyBox
07-06-08 13:59 vda Note Added: 0009074
07-07-08 08:12 mebarton File Added: busybox.config
07-07-08 08:13 mebarton File Added: who.log
07-08-08 18:26 mebarton Note Added: 0009094
07-21-08 10:50 mebarton Issue Monitored: mebarton
09-20-08 09:34 vda Note Added: 0011744
09-28-08 16:22 vda Status assigned => closed
09-28-08 16:22 vda Note Added: 0012354
09-28-08 16:22 vda Resolution open => no change required


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