From: Todd C. Miller <Todd.Miller@courtesan.com>
Date: Wed, 12 Apr 2017 23:06:48 +0000 (-0600)
Subject: In sudo_ttyname_scan() if dir is the empty string, set errno to
X-Git-Tag: SUDO_1_8_20^2~47
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d989f8af30fe812bc87fc51f6e58c64c5baea17b;p=sudo

In sudo_ttyname_scan() if dir is the empty string, set errno to
ENOENT before returning.
---

diff --git a/src/ttyname.c b/src/ttyname.c
index 9b94ba8f1..21c013456 100644
--- a/src/ttyname.c
+++ b/src/ttyname.c
@@ -180,7 +180,11 @@ sudo_ttyname_scan(const char *dir, dev_t rdev, bool builtin, char *name, size_t
     DIR *d = NULL;
     debug_decl(sudo_ttyname_scan, SUDO_DEBUG_UTIL)
 
-    if (dir[0] == '\0' || (d = opendir(dir)) == NULL)
+    if (dir[0] == '\0') {
+	errno = ENOENT;
+	goto done;
+    }
+    if ((d = opendir(dir)) == NULL)
 	goto done;
 
     sudo_debug_printf(SUDO_DEBUG_INFO|SUDO_DEBUG_LINENO,