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From: root@uokmet.UUCP.UUCP
Newsgroups: net.bugs.2bsd
Subject: Symlink() bug
Message-ID: <1500018@uokmet.UUCP>
Date: Fri, 11-Jul-86 15:07:00 EDT
Article-I.D.: uokmet.1500018
Posted: Fri Jul 11 15:07:00 1986
Date-Received: Sun, 13-Jul-86 20:30:39 EDT
Lines: 32
Nf-ID: #N:uokmet.UUCP:1500018:000:643
Nf-From: uokmet.UUCP!root    Jul 11 14:07:00 1986


Subject: symlink bug
Index:	sys/sys3.c 2.9bsd

Description:
	Symlink() always creates a link to "something", even if the original
	file doesn't exist.

Repeat-By:
	ln -s xxx xxx [presto, a "funny" xxx file is created.]
	[Fortunately, nothing "fatal" happens.  Attempts to look at the
	file gives EWOULDBLOCK.]

Fix:
	In sys/sys3.c, function symlink(), after the line

		uap = (struct a *)u.u_ap;

	add

		ip = namei(uchar, LOOKUP, 1);
		if (ip == NULL)
			return;

	This is the exact same way link() does it in sys/sys2.c.

	Kevin W. Thomas
	Univ. of Oklahoma
	School of Meteorology
	Norman, OK

UUCP:	...!ihnp4!okstate!uokvax!uokmet!kwthomas