From a7f40264f0cf2ab09a8deba4bb3128ecca0b44ce Mon Sep 17 00:00:00 2001
From: millert <millert@openbsd.org>
Date: Mon, 24 Feb 1997 20:43:27 +0000
Subject: [PATCH] Only update owner (via lchown) when dealing with symbolic
 links. Fixes core dump problem with ``-p'' and symbolic links.  Noted by
 Carsten Hammer <chammer@post.uni-bielefeld.de>.

---
 bin/cp/utils.c | 42 ++++++++++++++++++++++++------------------
 1 file changed, 24 insertions(+), 18 deletions(-)

diff --git a/bin/cp/utils.c b/bin/cp/utils.c
index c54b07e7f81..7e9d94aa5dd 100644
--- a/bin/cp/utils.c
+++ b/bin/cp/utils.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: utils.c,v 1.3 1997/01/26 22:04:45 kstailey Exp $	*/
+/*	$OpenBSD: utils.c,v 1.4 1997/02/24 20:43:27 millert Exp $	*/
 /*	$NetBSD: utils.c,v 1.4 1995/08/02 07:17:02 jtc Exp $	*/
 
 /*-
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)utils.c	8.3 (Berkeley) 4/1/94";
 #else
-static char rcsid[] = "$OpenBSD: utils.c,v 1.3 1997/01/26 22:04:45 kstailey Exp $";
+static char rcsid[] = "$OpenBSD: utils.c,v 1.4 1997/02/24 20:43:27 millert Exp $";
 #endif
 #endif /* not lint */
 
@@ -200,7 +200,7 @@ copy_link(p, exists)
 		warn("symlink: %s", link);
 		return (1);
 	}
-	return (pflag ? setfile(NULL, 0) : 0);
+	return (pflag ? setfile(p->fts_statp, 0) : 0);
 }
 
 int
@@ -242,18 +242,26 @@ setfile(fs, fd)
 	int fd;
 {
 	static struct timeval tv[2];
-	int rval;
+	int rval = 0;
 
-	rval = 0;
-	if (fs != NULL) {
-		fs->st_mode &= S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
-
-		TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec);
-		TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec);
-		if (utimes(to.p_path, tv)) {
-			warn("utimes: %s", to.p_path);
-			rval = 1;
+	/* Only change the owner for symbolic links. */
+	if (S_ISLNK(fs->st_mode)) {
+		if (lchown(to.p_path, fs->st_uid, fs->st_gid)) {
+			if (errno != EPERM) {
+				warn("lchown: %s", to.p_path);
+				rval = 1;
+			}
 		}
+		return (rval);
+	}
+
+	fs->st_mode &= S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
+
+	TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec);
+	TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec);
+	if (utimes(to.p_path, tv)) {
+		warn("utimes: %s", to.p_path);
+		rval = 1;
 	}
 	/*
 	 * Changing the ownership probably won't succeed, unless we're root
@@ -262,17 +270,15 @@ setfile(fs, fd)
 	 * chown.  If chown fails, lose setuid/setgid bits.
 	 */
 	if (fd ? fchown(fd, fs->st_uid, fs->st_gid) :
-	    lchown(to.p_path, fs->st_uid, fs->st_gid)) {
+	    chown(to.p_path, fs->st_uid, fs->st_gid)) {
 		if (errno != EPERM) {
-			warn("lchown: %s", to.p_path);
+			warn("chown: %s", to.p_path);
 			rval = 1;
 		}
-		if (fs == NULL)
-			return (rval);
 		fs->st_mode &= ~(S_ISUID | S_ISGID);
 	}
 	if (fd ? fchmod(fd, fs->st_mode) : chmod(to.p_path, fs->st_mode)) {
-		warn("chown: %s", to.p_path);
+		warn("chmod: %s", to.p_path);
 		rval = 1;
 	}
 
-- 
2.20.1