Add os_file_exists()

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/utils/os.h

@@ -239,6 +239,13 @@ int os_unsetenv(const char *name);
  */
 char * os_readfile(const char *name, size_t *len);
 
+/**
+ * os_file_exists - Check whether the specified file exists
+ * @fname: Path and name of the file
+ * Returns: 1 if the file exists or 0 if not
+ */
+int os_file_exists(const char *fname);
+
 /**
  * os_zalloc - Allocate and zero memory
  * @size: Number of bytes to allocate

src/utils/os_unix.c

@@ -407,6 +407,16 @@ char * os_readfile(const char *name, size_t *len)
 }
 
 
+int os_file_exists(const char *fname)
+{
+	FILE *f = fopen(fname, "rb");
+	if (f == NULL)
+		return 0;
+	fclose(f);
+	return 1;
+}
+
+
 #ifndef WPA_TRACE
 void * os_zalloc(size_t size)
 {