mingw.c

gistfile1.txt

int mingw_lstat(const char *file_name, struct stat *buf)
{
	WIN32_FILE_ATTRIBUTE_DATA fdata;
	WIN32_FIND_DATAW findbuf;
	wchar_t wfilename[MAX_LONG_PATH];
	int wlen = xutftowcs_long_path(wfilename, file_name);
	if (wlen < 0)
		return -1;

	/* strip trailing '/', or GetFileAttributes will fail */
	while (wlen && is_dir_sep(wfilename[wlen - 1]))
		wfilename[--wlen] = 0;
	if (!wlen) {
		errno = ENOENT;
		return -1;
	}

	error("getting attribs for: %s", file_name);
	if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
		/* for reparse points, use FindFirstFile to get the reparse tag */
		if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
			HANDLE handle = FindFirstFileW(wfilename, &findbuf);
			if (handle == INVALID_HANDLE_VALUE)
				goto error;
			FindClose(handle);
		}
		buf->st_ino = 0;
		buf->st_gid = 0;
		buf->st_uid = 0;
		buf->st_nlink = 1;
		error("dwFileAttributes: %lu", fdata.dwFileAttributes);
		error("dwReserved0: %lu", findbuf.dwReserved0);
		error("translated attribs: %x", (int)file_attr_to_st_mode(fdata.dwFileAttributes, findbuf.dwReserved0));
		buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes,
				findbuf.dwReserved0);
		buf->st_size = S_ISLNK(buf->st_mode) ? MAX_LONG_PATH :
			fdata.nFileSizeLow | (((off_t) fdata.nFileSizeHigh) << 32);
		buf->st_dev = buf->st_rdev = 0; /* not used by Git */
		filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
		filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
		filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
		return 0;
	}
error:
	switch (GetLastError()) {
	case ERROR_ACCESS_DENIED:
	case ERROR_SHARING_VIOLATION:
	case ERROR_LOCK_VIOLATION:
	case ERROR_SHARING_BUFFER_EXCEEDED:
		errno = EACCES;
		break;
	case ERROR_BUFFER_OVERFLOW:
		errno = ENAMETOOLONG;
		break;
	case ERROR_NOT_ENOUGH_MEMORY:
		errno = ENOMEM;
		break;
	case ERROR_PATH_NOT_FOUND:
		if (!has_valid_directory_prefix(wfilename)) {
			errno = ENOTDIR;
			break;
		}
		/* fallthru */
	default:
		errno = ENOENT;
		break;
	}
	return -1;
}