fix usage of locks with vfork

[musl] / src / stdio / ext.c

diff --git a/src/stdio/ext.c b/src/stdio/ext.c
index 6b8ce91..1fd9549 100644 (file)
--- a/src/stdio/ext.c
+++ b/src/stdio/ext.c
@@ -14,12 +14,12 @@ int __fsetlocking(FILE *f, int type)
 
 int __fwriting(FILE *f)
 {
-       return f->wend && f->wpos > f->wbase;
+       return (f->flags & F_NORD) || f->wend;
 }
 
 int __freading(FILE *f)
 {
-       return f->rend > f->rpos;
+       return (f->flags & F_NOWR) || f->rend;
 }
 
 int __freadable(FILE *f)