X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fstdio%2Ffopen.c;h=560b77e43cafbf53d69dff50a29491308b4631e6;hb=8c0a3d9e5c169fc9d0f246ab59362b658b029ad7;hp=084cc73ce5ab7014821c3774f120c2fbd07d60c3;hpb=58165923890865a6ac042fafce13f440ee986fd9;p=musl

diff --git a/src/stdio/fopen.c b/src/stdio/fopen.c
index 084cc73c..560b77e4 100644
--- a/src/stdio/fopen.c
+++ b/src/stdio/fopen.c
@@ -1,11 +1,10 @@
 #include "stdio_impl.h"
 
-FILE *fopen(const char *filename, const char *mode)
+FILE *fopen(const char *restrict filename, const char *restrict mode)
 {
 	FILE *f;
 	int fd;
 	int flags;
-	int plus = !!strchr(mode, '+');
 
 	/* Check for valid initial mode character */
 	if (!strchr("rwa", *mode)) {
@@ -14,9 +13,10 @@ FILE *fopen(const char *filename, const char *mode)
 	}
 
 	/* Compute the flags to pass to open() */
-	if (plus) flags = O_RDWR;
+	if (strchr(mode, '+')) flags = O_RDWR;
 	else if (*mode == 'r') flags = O_RDONLY;
 	else flags = O_WRONLY;
+	if (strchr(mode, 'x')) flags |= O_EXCL;
 	if (*mode != 'r') flags |= O_CREAT;
 	if (*mode == 'w') flags |= O_TRUNC;
 	if (*mode == 'a') flags |= O_APPEND;