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List:       busybox
Subject:    Re: adduser failed with unknow uid=0
From:       Tito <farmatito () tiscali ! it>
Date:       2006-12-26 7:31:14
Message-ID: 200612260831.14807.farmatito () tiscali ! it
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On Tuesday 26 December 2006 07:20, he-guo@mediaring.com wrote:
> Hi Denis,
> 
> you are right. but I can not figure out why like that.
> all user account related commands get problem with 1.30 version.
> 
> Thanks a lot for your help
> 
> 
> ----- Original Message ----- 
> From: "Denis Vlasenko" <vda.linux@googlemail.com>
> To: <busybox@busybox.net>
> Cc: <he-guo@mediaring.com>
> Sent: Tuesday, December 26, 2006 1:02 PM
> Subject: Re: adduser failed with unknow uid=0
> 
> 
> > On Tuesday 26 December 2006 04:25, he-guo@mediaring.com wrote:
> > > Hi all,
> > > 
> > > I tested busybox-1.30, i found adduser failed with unknown uid=0.
> > > 
> > > adduser test
> > > passwd: unknown uid 0
> > > 
> > > i tested it using busybox internal function and glibc function, 
> > > all failed with the same reason .
> > 
> > Well, the only place where I see "unknown uid" string is here:
> > 
> > int vlock_main(int argc, char **argv)
> > {
> >         sigset_t sig;
> >         struct sigaction sa;
> >         struct vt_mode vtm;
> >         struct termios term;
> >         uid_t uid = getuid();
> > 
> >         pw = getpwuid(uid);
> >         if (pw == NULL)
> >                 bb_error_msg_and_die("unknown uid %d", uid);
> > 
> > But adduser surely doesn't call vlock!
> > It calls passwd. Maybe it is printed here?
> > 
> > int passwd_main(int argc, char **argv)
> > {
> > ...
> >         pw = getpwnam(name);
> >         if (!pw) bb_error_msg_and_die("unknown user %s", name);
> > 
> > Can you check whaich of these messages is printed?
> > --
> > vda

Hi, Denis
seems to me that the failing call is in passwd:

	myuid = getuid();
	if ((opt & OPT_lud) && (!argc || myuid))
		bb_show_usage();

	myname = xstrdup(bb_getpwuid(NULL, myuid, -1));

bb_getpwuid() via bb_getug() when

	} else if (bufsize < 0 && !idname) {
		bb_error_msg_and_die("unknown %cid %ld", prefix, id);
	}

have not time to investigate this now tough.

Ciao,
Tito

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