From 42d6cdd371dc482bf423737a8024cdb064f98b87 Mon Sep 17 00:00:00 2001
From: Maxim Sobolev <sobomax@FreeBSD.org>
Date: Mon, 25 Feb 2002 09:17:44 +0000
Subject: [PATCH] Fix a bug introduced in rev.1.23 - for some reason mkdir("/",
 ...) system call returns `EISDIR', not `EEXIST', so that be prepared for
 that. This should fix number of ports, that often call `mkdir -p
 //usr/local/foobar'. This is just a quick workaround, the real fix would be
 either to avoid calling mkdir("/", ...) or fix VFS code to return consistent
 errno for this case.

---
 bin/mkdir/mkdir.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/mkdir/mkdir.c b/bin/mkdir/mkdir.c
index 17e7ccf446fc..5f865883e91b 100644
--- a/bin/mkdir/mkdir.c
+++ b/bin/mkdir/mkdir.c
@@ -174,7 +174,7 @@ build(char *path, mode_t omode)
 		if (last)
 			(void)umask(oumask);
 		if (mkdir(path, last ? omode : S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
-			if (errno == EEXIST) {
+			if (errno == EEXIST || errno == EISDIR) {
 				if (stat(path, &sb) < 0) {
 					warn("%s", path);
 					retval = 1;