win32: try harder to get file attributes

Reading the attributes of files like c:/pagefile.sys fails with
error code ERROR_SHARING_VIOLATION, which breaks 'ls'.

If this happens try an alternative API call to get the attributes.

See GitHub issue #101.

1 files changed, 16 insertions, 0 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index 7fe5a6f05..ee549c311 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -286,6 +286,22 @@ static inline int get_file_attr(const char *fname, WIN32_FILE_ATTRIBUTE_DATA *fd
         if (GetFileAttributesExA(fname, GetFileExInfoStandard, fdata))
                 return 0;
 
+        if (GetLastError() == ERROR_SHARING_VIOLATION) {
+                HANDLE hnd;
+                WIN32_FIND_DATA fd;
+
+                if ((hnd=FindFirstFile(fname, &fd)) != INVALID_HANDLE_VALUE) {
+                        fdata->dwFileAttributes = fd.dwFileAttributes;
+                        fdata->ftCreationTime = fd.ftCreationTime;
+                        fdata->ftLastAccessTime = fd.ftLastAccessTime;
+                        fdata->ftLastWriteTime = fd.ftLastWriteTime;
+                        fdata->nFileSizeHigh = fd.nFileSizeHigh;
+                        fdata->nFileSizeLow = fd.nFileSizeLow;
+                        FindClose(hnd);
+                        return 0;
+                }
+        }
+
         switch (GetLastError()) {
         case ERROR_ACCESS_DENIED:
         case ERROR_SHARING_VIOLATION: