Symlink() bug

[root at uokmet.UUCP.UUCP]

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