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#1 2011-03-08 23:11:29
- babylonian13
- Member
- Registered: 2009-07-06
- Posts: 6
Can't login non-root user
Hi!
I'm having trouble to login with a user I created with:
useradd -g users -G wheel,daemon,audio,video,power,storage,optical,scanner -m toni
Afterwards I installed slim.
I can't login as toni. Only as root.
When I enter toni and then it's password the screen hangs for a few saconds, goes black and then returns to slim.
Then I tried this command from root:
'login -p toni'
It prints the Last Login MOTD of the toni user than it hangs for a few seconds and returns to the root session.
But when I press Ctrl+C after it has printed the Last Login MOTD than it logs immediately in the toni account.
This is a transcript of the commands:
[root@hp-arch ~]# login -p toni
Password:
Last login: Tue Mar 8 23:56:58 CET 2011 on pts/2
[root@hp-arch ~]# login -p toni
Password:
Last login: Tue Mar 8 23:57:28 CET 2011 on pts/2
^C[toni@hp-arch ~]$ whoami
toni
[toni@hp-arch ~]$ This is the output of 'strace login -p toni':
... -- output cropped -- ...
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb77f8000
read(5, "root:x:0:root\nbin:x:1:root,bin,d"..., 4096) = 556
close(5) = 0
munmap(0xb77f8000, 4096) = 0
fchown32(0, 1000, 5) = 0
fchmod(0, 0600) = 0
rt_sigaction(SIGINT, {SIG_IGN, [INT], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb7659728) = 7586
wait4(-1, NULL, 0, NULL) = 7586 // This is where it hangs for a few seconds
--- SIGCHLD (Child exited) @ 0 (0) ---
getuid32() = 0
time(NULL) = 1299625337
send(3, "<86>Mar 9 00:02:17 login[7578]:"..., 86, MSG_NOSIGNAL) = 86
open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 5
fstat64(5, {st_mode=S_IFREG|0644, st_size=495, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb77f8000
read(5, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 495
close(5) = 0
munmap(0xb77f8000, 4096) = 0
gettimeofday({1299625337, 778461}, NULL) = 0
access("/var/log/wtmpx", F_OK) = -1 ENOENT (No such file or directory)
open("/var/log/wtmp", O_WRONLY|O_LARGEFILE) = 5
alarm(0) = 0
rt_sigaction(SIGALRM, {0xb7793f70, [], 0}, {0x8049ab0, [ALRM], SA_RESTART}, 8) = 0
alarm(10) = 0
fcntl64(5, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}) = 0
_llseek(5, 0, [191616], SEEK_END) = 0
write(5, "\10\0\0\0\232\35\0\0pts/1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) = 384
fcntl64(5, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 10
rt_sigaction(SIGALRM, {0x8049ab0, [ALRM], SA_RESTART}, NULL, 8) = 0
close(5) = 0
close(4) = 0
munmap(0xb780a000, 8160) = 0
munmap(0xb7808000, 7220) = 0
munmap(0xb7642000, 91200) = 0
munmap(0xb7804000, 12676) = 0
munmap(0xb7800000, 14444) = 0
munmap(0xb7616000, 92104) = 0
munmap(0xb77fd000, 11876) = 0
munmap(0xb77f9000, 13724) = 0
munmap(0xb7640000, 6584) = 0
munmap(0xb763c000, 14804) = 0
munmap(0xb7639000, 10720) = 0
munmap(0xb7636000, 11796) = 0
munmap(0xb75fd000, 12424) = 0
munmap(0xb7634000, 6580) = 0
munmap(0xb7631000, 9700) = 0
munmap(0xb762e000, 11904) = 0
munmap(0xb75c0000, 247036) = 0
exit_group(0) = ?
[root@hp-arch bin]# And this is the output of 'ltrace login -p toni':
... -- output cropped -- ...
getdef_bool(0x804d36a, 0xb75f918d, 4, 0x8e81b08, 0) = 0
getpwnam("toni") = 0xb76d2c20
malloc(28) = 0x08e8ed48
realloc(NULL, 256) = 0x08e92128
__errno_location() = 0xb7552688
getpwnam_r(0x8e81c38, 0x8e8ed48, 0x8e92128, 256, 0xbf80f64c) = 0
__pw_dup(0x8e8ed48, 0x8e8ed48, 0x8e92128, 256, 0xbf80f64c) = 0x8e81c48
free(0x08e92128) = <void>
free(0x08e8ed48) = <void>
setgid(100) = 0
initgroups(0x8e80078, 100, 0x8e81c48, 0x8e8ed48, 0x8e81c38) = 0
pam_setcred(0x8e81a28, 2, 0xbf8118bc, 0xbf8119bc, 0) = 0
alarm(0) = 0
getenv("IFS") = NULL
getdef_str(0x804d780, 0x8e81c38, 0xbf80f668, 0x804d4a8, 1) = 0x8e81460
__errno_location() = 0xb7552688
strtoll(0x8e81460, 0xbf80f62c, 10, 0xb76ed0f4, 0x8e81c48) = 0
malloc(16) = 0x08e8eed8
realloc(NULL, 256) = 0x08e92128
__errno_location() = 0xb7552688
getgrnam_r(0x8e81460, 0x8e8eed8, 0x8e92128, 256, 0xbf80f5ec) = 0
__gr_dup(0x8e8eed8, 0x8e8eed8, 0x8e92128, 256, 0xbf80f5ec) = 0x8e8eef0
free(0x08e92128) = <void>
free(0x08e8eed8) = <void>
fchown(0, 1000, 5, 0x804d4a8, 1) = 0
getdef_num(0x804d789, 384, 5, 0x804d4a8, 1) = 384
fchmod(0, 0600) = 0
signal(2, 0x00000001) = NULL
fork() = 7616
wait(NULL <unfinished ...> // This is where it hangs for a few seconds
--- SIGCHLD (Child exited) ---
<... wait resumed> ) = 7616
pam_close_session(0x8e81a28, 0, 0xbf8118bc, 0xbf8119bc, 0) = 0
pam_end(0x8e81a28, 0, 0xbf8118bc, 0xbf8119bc, 0) = 0
exit(0 <unfinished ...>
+++ exited (status 0) +++
[root@hp-arch bin]# Afterwards I tried adding another test user with the 'adduser' command and it logged without any problem.
Can anyone tell me where is the problem that I can't log in the toni user?
How can I fix it?
Thanks in advance
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#2 2011-03-08 23:28:00
- SS4
- Member
- From: !Rochford, Essex
- Registered: 2010-12-05
- Posts: 699
Re: Can't login non-root user
It looks like you didn't set a shell when using useradd
It would probably be easier to remove your user and add it again if toni has no data
Rauchen verboten
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#3 2011-03-08 23:33:45
- babylonian13
- Member
- Registered: 2009-07-06
- Posts: 6
Re: Can't login non-root user
It looks like you didn't set a shell when using useradd
It would probably be easier to remove your user and add it again if toni has no data
Yes I know the easy way.
I just want to know if there is anyway to fix it?
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#4 2011-03-08 23:43:56
- whatshisname
- Member
- Registered: 2010-04-24
- Posts: 163
Re: Can't login non-root user
Something to try:
If the lack of a shell is your problem, try "vipw" as root and add ":/bin/bash" to the end of "toni's" line in "/etc/passwd".
e.g.:
toni:x:1000:1000:Your Name,,,:/home/toni:/bin/bash
You may have to reboot.
Edit: You're editor is likely to be "vim". Can't tell how much experience you have in Linux so beware.
Last edited by whatshisname (2011-03-08 23:45:46)
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#5 2011-03-08 23:46:38
- babylonian13
- Member
- Registered: 2009-07-06
- Posts: 6
Re: Can't login non-root user
I checked /etc/passwd and /bin/bash is already there.
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#6 2011-03-09 17:13:07
- whatshisname
- Member
- Registered: 2010-04-24
- Posts: 163
Re: Can't login non-root user
Then the problem may be in your having used "useradd" instead of "adduser".
From the man pages on an Ubuntu machine at work, not my Arch box:
"useradd is a low level utility for adding users. On Debian, administrators should usually use adduser(8) instead."
I've mixed up those commands before myself.
At this point, I would take SS4's advice and delete the user.
Then use "adduser" to put him back.
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#7 2011-03-09 18:05:26
- babylonian13
- Member
- Registered: 2009-07-06
- Posts: 6
Re: Can't login non-root user
Ok. That's what I'm going to do. Thanks for the answers. 
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