From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 18 Jun 2012 00:34:04 +0000 (-0400)
Subject: fdopen should set errno when it fails due to invalid mode string
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=3b43d10fafd64ac0a93fab463330a936b90ec15c;p=musl

fdopen should set errno when it fails due to invalid mode string
---

diff --git a/src/stdio/__fdopen.c b/src/stdio/__fdopen.c
index 07f966a5..8bd51c66 100644
--- a/src/stdio/__fdopen.c
+++ b/src/stdio/__fdopen.c
@@ -7,7 +7,10 @@ FILE *__fdopen(int fd, const char *mode)
 	int plus = !!strchr(mode, '+');
 
 	/* Check for valid initial mode character */
-	if (!strchr("rwa", *mode)) return 0;
+	if (!strchr("rwa", *mode)) {
+		errno = EINVAL;
+		return 0;
+	}
 
 	/* Allocate FILE+buffer or fail */
 	if (!(f=malloc(sizeof *f + UNGET + BUFSIZ))) return 0;