Fixed bug #69472 php_sys_readlink ignores misc errors from GetFinalPathNameByHandleA

diff --git a/Zend/zend_virtual_cwd.c b/Zend/zend_virtual_cwd.c
index 70b42657a4eae14ae23e60a64f6cda65a8ca4c72..28cc7f6eedd13369eb0c25ceb92b9d9d9052919c 100644 (file)
--- a/Zend/zend_virtual_cwd.c
+++ b/Zend/zend_virtual_cwd.c
@@ -261,7 +261,7 @@ CWD_API int php_sys_readlink(const char *link, char *target, size_t target_len){
        }
 
        dwRet = pGetFinalPathNameByHandle(hFile, target, MAXPATHLEN, VOLUME_NAME_DOS);
-       if(dwRet >= MAXPATHLEN) {
+       if(dwRet >= MAXPATHLEN || dwRet == 0) {
                return -1;
        }