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-   -   login problems after permission change: unable to cd to home (http://www.linux-archive.org/debian-user/312052-login-problems-after-permission-change-unable-cd-home.html)

Alexey Salmin 01-20-2010 09:08 AM

login problems after permission change: unable to cd to home
 
May be it's worth it to post here those permissions?

Btw, don't forget that to access a file you need an 'x' flag set on
all directories in the path to that file including the '/' directory.
You also need an 'x' permission on a directory to be able to do chdir
to those directory (and also an 'x' on all directories in the path).

Alexey

On Wed, Jan 20, 2010 at 3:42 PM, <koen.news@koca.be> wrote:
> Problems started yesterday. I think when changing permission on root dir.
> Debian Etch
>
> Root login is no problem. I checked the permission of /etc / /root and set
> them right according to a debian with same version.
>
> Strace of login koenl says where all goes wrong:
>
> 3234 *fchown32(0, 1008, 5) * * * * * * *= 0
> 3234 *fchmod(0, 0600) * * * * * * * * * = 0
> 3234 *rt_sigaction(SIGINT, {SIG_IGN}, {SIG_DFL}, 8) = 0
> 3234 *clone(child_stack=0,
> flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGC HLD,
> child_tidptr=0xb7dd7708) = 3235
> 3234 *wait4(-1, *<unfinished ...>
> 3235 *getppid() * * * * * * * * * * * * = 3234
> 3235 *setuid32(1008) * * * * * * * * * *= 0
> 3235 *chdir("/data/home/koenl") * * * * = -1 EACCES (Permission denied)
> 3235 *chdir("/") * * * * * * * * * * * *= -1 EACCES (Permission denied)
> 3235 *write(2, "Unable to cd to '/data/home/koenl'
", 35) = 35
> 3235 *time([1263977226]) * * * * * * * *= 1263977226
> 3235 *stat64("/etc/localtime", 0xbf89dae8) = -1 EACCES (Permission denied)
> 3235 *open("/etc/localtime", O_RDONLY) *= -1 EACCES (Permission denied)
> 3235 *open("/etc/localtime", O_RDONLY) *= -1 EACCES (Permission denied)
> 3235 *open("/etc/localtime", O_RDONLY) *= -1 EACCES (Permission denied)
> 3235 *send(5, "<84>Jan 20 09:47:06 login[3235]: unable to cd to
> `/data/home/koenl' for user `koenl'
", 85, MSG_NOSIGNAL) = 85
> 3235 *close(5) * * * * * * * * * * * * *= 0
> 3235 *munmap(0xb7f4b000, 4096) * * * * *= 0
> 3235 *exit_group(1) * * * * * * * * * * = ?
> 3234 *<... wait4 resumed> NULL, 0, NULL) = 3235
> 3234 *--- SIGCHLD (Child exited) @ 0 (0) ---
>
>
> Any idea what to correct? Because of this samba fileserver and bind9 also
> have problems. Any way to create rescue disk from other debian? i could
> access that system with rsync from this one.
>
> Koen
>
>
>
>
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>


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