From mboxrd@z Thu Jan  1 00:00:00 1970
From: dan robinson <dgrobinson@dgrobinson.com>
Date: Wed, 14 Dec 2011 10:58:04 -0800 (PST)
Subject: [Buildroot]  root permissions issue (reformatted)
Message-ID: <32975350.post@talk.nabble.com>
List-Id: <buildroot.busybox.net>
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To: buildroot@busybox.net


I have an NFS mounted root.  The directory, on the NFS server, does not have
write permissions for 'other'.  I am not able to create a file when I run
the command, 'touch one'.  On the NFS server side, I run 'chmod o+w' and
that is shown in the second 'ls' command.  I can create a file.

If I 'su' to default, I can create files in that user's directory.

Note that the file, 'one', is owned by 65534.  I have included the
/etc/passwd file.  This is -2 in 16 bits.  Noteworthy?

I ran the 'id' command.
# id
uid=0(root) gid=0(root) groups=0(root),10(wheel)

Ideas?

--dan robinson



# ls -al
total 20
drwxrwxr-x    2 root     root          4096 Dec 14  2011 .
drwxr-xr-x   16 root     root          4096 Dec  7  2011 ..
-rw-------    1 65534    65534          104 Dec 14  2011 .ash_history
-rw-r--r--    1 root     root             0 Nov 30  2011 .bash_history
-rw-r--r--    1 root     root           175 Nov 30  2011 .bash_logout
-rw-r--r--    1 root     root           161 Nov 30  2011 .bash_profile
# touch one
touch: one: Permission denied

// chmod o+w has been run on NFS server
# ls -al
total 20
drwxrwxrwx    2 root     root          4096 Dec 14  2011 .

drwxr-xr-x   16 root     root          4096 Dec  7  2011 ..
-rw-------    1 65534    65534          121 Dec 14  2011 .ash_history
-rw-r--r--    1 root     root             0 Nov 30  2011 .bash_history
-rw-r--r--    1 root     root           175 Nov 30  2011 .bash_logout
-rw-r--r--    1 root     root           161 Nov 30  2011 .bash_profile
# touch one
# ls -al
total 20
drwxrwxrwx    2 root     root          4096 Dec 14  2011 .
drwxr-xr-x   16 root     root          4096 Dec  7  2011 ..
-rw-------    1 65534    65534          138 Dec 14  2011 .ash_history
-rw-r--r--    1 root     root             0 Nov 30  2011 .bash_history
-rw-r--r--    1 root     root           175 Nov 30  2011 .bash_logout
-rw-r--r--    1 root     root           161 Nov 30  2011 .bash_profile
-rw-r--r--    1 65534    65534            0 Dec 14  2011 one

# cat /etc/passwd
root::0:0:root:/root:/bin/sh
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
sync:x:4:100:sync:/bin:/bin/sync
mail:x:8:8:mail:/var/spool/mail:/bin/sh
proxy:x:13:13:proxy:/bin:/bin/sh
www-data:x:33:33:www-data:/var/www:/bin/sh
backup:x:34:34:backup:/var/backups:/bin/sh
operator:x:37:37:Operator:/var:/bin/sh
haldaemon:x:68:68:hald:/:/bin/sh
dbus:x:81:81:dbus:/var/run/dbus:/bin/sh
ftp:x:83:83:ftp:/home/ftp:/bin/sh
nobody:x:99:99:nobody:/home:/bin/sh
sshd:x:103:99:Operator:/var:/bin/sh
default:x:1000:1000:Default non-root user:/home/default:/bin/sh


-- 
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