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From: ron@BRL.ARPA
Newsgroups: net.unix-wizards
Subject: brl-vgr Bug Report
Message-ID: <4574@brl-smoke.ARPA>
Date: Mon, 13-Oct-86 19:03:44 EDT
Article-I.D.: brl-smok.4574
Posted: Mon Oct 13 19:03:44 1986
Date-Received: Tue, 14-Oct-86 06:54:23 EDT
Sender: news@brl-smoke.ARPA
Lines: 24

Subject: chsh won't change shell back
Index:	bin/passwd.c 4.3BSD

Description:
	Chsh won't change shell to one that is earlier in /etc/shells
	file than the one you are using.
Repeat-By:
	Chsh to the a later shell in the file (say tcsh) and then
	try to switch back to csh.
Fix:
	Chsh verifies that the shell you are switching from is in
	/etc/shells by calling getusershell until it matches.  It
	then verifies the new shell by calling getusershell, but it
	does not rewind the file by calling set/endusershell.

	Add endusershell call prior to the second lookup
	/*
	 * Allow user to give shell name w/o preceding pathname.
	 */
	if (u == 0) {
		valid = newshell;
	} else {
!!!		endusershell();
		for (valid = getusershell(); valid; valid = getusershell()) {