Date: Mon, 17 Mar 1997 22:51:05 -0700 From: Warner Losh <imp@village.org> To: David Hawkins <dhawk@river.org> Cc: stable@freebsd.org Subject: Re: root & /etc/nologin Message-ID: <199703180551.WAA01226@rover.village.org> In-Reply-To: Your message of "Mon, 17 Mar 1997 21:34:27 PST." <199703180534.VAA04418@ohio.river.org> References: <199703180534.VAA04418@ohio.river.org>
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In message <199703180534.VAA04418@ohio.river.org> David Hawkins writes:
: The man page (login) just says logins are disabled, but I was
: wondering if root/console was a special case.
My FreeBSD sources are offline while I'm updating NetBSD, but my Dec 5
NetBSD sources say:
...
if (pwd = getpwnam(username))
salt = pwd->pw_passwd;
else
salt = "xx";
/*
* if we have a valid account name, and it doesn't have a
* password, or the -f option was specified and the caller
* is root or the caller isn't changing their uid, don't
* authenticate.
*/
if (pwd) {
if (pwd->pw_uid == 0)
rootlogin = 1;
...
/* if user not super-user, check for disabled logins */
if (!rootlogin)
checknologin();
which looks like root can always login, even in the face of the
/etc/nologin file. I strongly suspect FreeBSD wouldn't be any
different in this area.
Warner
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