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kderichs
n00b
Joined: 19 Jan 2004
Posts: 7
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 Posted: Mon Jan 19, 2004 10:39 pm Post subject: cannot find username for UID |
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Hi everybody,
when I log into my system as any user but root I get the message "cannot find username for UID xxxx". Furthermore if I do a ls -la as a non-root user it dosen't show the username but only it's ID.
I digged up a few threads but they don't seem to fit to my problem. The passwd is worldreadable and the /etc/nsswitch.conf seems to be ok as well.
bash-2.05b# su - kderichs
/usr/bin/whoami: cannot find username for UID 1003
-bash: [: =: unary operator expected
I have no name!@kderichs-lx1 kderichs $ ll /etc/passwd
-rw--w--w- 1 0 root 1993 Jan 19 21:28 /etc/passwd
I have no name!@kderichs-lx1 kderichs $ exit
logout
bash-2.05b# whoami
root
bash-2.05b# ll /etc/passwd
-rw--w--w- 1 root root 1993 Jan 19 21:28 /etc/passwd
The strace output for the whoami (executed as user kderichs)
| Quote: | open("/etc/passwd", O_RDONLY) = -1 EACCES (Permission denied)
write(2, "whoami: cannot find username for"..., 42whoami: cannot find username for UID 1003
) = 42
_exit(1) |
What I did:
To emerge a masked package I changed my /etc/make.conf to
| Quote: | | ACCEPT_KEYWORDS="~x86" |
After that I started
and while this was running
| Code: | | emerge --fetchonly world |
when the emerge system finished the output said to run a script to update the installed dev-perl modules (sorry but I forgot it's name). I run this script and something strange happend. It run 2 passe only over the perl modules and during the 3rd pass it started to emerge all pakages, which were downloaded by the emerge fetchonly. I didn't give much thought and went on to setup my box. I added another user and the UID problem showd up.
Another problem that might be realated if I do
emerge a
emerge b
it sometimes happens that while running emerge b at the the were it says
>>> merge b to /
all file of emerge a are again move to /
I hope that someone can help and I would like to say thanks in advance.
Kurt |
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kderichs
n00b
Joined: 19 Jan 2004
Posts: 7
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| Posted: Mon Jan 19, 2004 11:05 pm Post subject: |
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hi,
after looking around a bit I found another problem:
Some file under /dev belong to whatever user logged in first after a boot. these are
/dev/fb/0
/dev/vc/1
/dev/ide/host0/bus0/target1/lun0/cd
/dev/ide/host0/bus1/target1/lun0/cd
/dev/sound/adsp
/dev/sound/dsp
/dev/sound/audio
/dev/sound/mixer
/dev/snd/controlC0
/dev/snd/timer
/dev/snd/pcmC0D2p
/dev/snd/pcmC0D2c
/dev/snd/pcmC0D1p
/dev/snd/pcmC0D0p
/dev/snd/pcmC0D0c
/dev/gpmctl
/dev/floppy/0u1440
/dev/floppy/0u1680
/dev/floppy/0u1722
/dev/floppy/0u1743
/dev/floppy/0u1760
/dev/floppy/0u1920
/dev/floppy/0u1840
/dev/floppy/0u1600
/dev/floppy/0u360
/dev/floppy/0u720
/dev/floppy/0u820
/dev/floppy/0u830
/dev/floppy/0u1040
/dev/floppy/0u1120
/dev/floppy/0u800
/dev/floppy/0
As the strace says permission denied, I thought this might give you another hint.
Thanks again
Kurt |
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tomk
Bodhisattva
Joined: 23 Sep 2003
Posts: 7221
Location: Sat in front of my computer
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| Posted: Tue Jan 20, 2004 12:37 pm Post subject: Re: cannot find username for UID |
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| kderichs wrote: | I have no name!@kderichs-lx1 kderichs $ ll /etc/passwd
-rw--w--w- 1 0 root 1993 Jan 19 21:28 /etc/passwd
I have no name!@kderichs-lx1 kderichs $ exit
logout
bash-2.05b# whoami
root
bash-2.05b# ll /etc/passwd
-rw--w--w- 1 root root 1993 Jan 19 21:28 /etc/passwd[/list]
The strace output for the whoami (executed as user kderichs)
| Quote: | open("/etc/passwd", O_RDONLY) = -1 EACCES (Permission denied)
write(2, "whoami: cannot find username for"..., 42whoami: cannot find username for UID 1003
) = 42
_exit(1) |
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Looks like the permissions are wrong for /etc/passwd they are world-writable on your system. They should be world-readable. Try
| Code: | | chmod 644 /etc/passwd |
The stuff in /dev isn't relevant. Basically certain devices are chowned to the first user who logs in, then chowned back to what it says in /etc/security/console.perms when they log out again.
HTH
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kderichs
n00b
Joined: 19 Jan 2004
Posts: 7
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| Posted: Wed Jan 21, 2004 9:17 am Post subject: |
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Thanks for the answer. I never actually entered the command because the ls showed that the permissons were right. Now it's working again. Thanks!!
What I can't understand is how it's possible that the ls shows the wrong permission. Any ideas?
Kurt |
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tomk
Bodhisattva
Joined: 23 Sep 2003
Posts: 7221
Location: Sat in front of my computer
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| Posted: Wed Jan 21, 2004 12:55 pm Post subject: |
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It could be a misconfigured ebuild, but usually it's down to mistyping something as root.
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