From: Vishnunithyasoundhar S <svishnunithyasoundhar@gmail.com> Support the \\?\ prefix by skipping it during path resolution while preserving it in the output. Added specific handling for extended UNC paths (\\?\UNC\) to mirror standard UNC behavior, ensuring these paths are treated as network shares and not local devices. Some paths that use the extended length path were filtered out as UNC paths - but not all of them are UNC. There can be UNC path that use extended length path but not all extended length paths are UNC paths. Signed-off-by: Vishnunithyasoundhar S <svishnunithyasoundhar@gmail.com> --- dlls/kernelbase/file.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/dlls/kernelbase/file.c b/dlls/kernelbase/file.c index 83977a2c40b..a4d85133909 100644 --- a/dlls/kernelbase/file.c +++ b/dlls/kernelbase/file.c @@ -2116,6 +2116,21 @@ DWORD WINAPI DECLSPEC_HOTPATCH GetLongPathNameW( LPCWSTR shortpath, LPWSTR longp return 0; } + /* Handle \\?\ prefix (Extended Length Path) */ + if (shortpath[0] == '\\' && shortpath[1] == '\\' && shortpath[2] == '?' && + shortpath[3] == '\\') { + /* Filter out entended UNC */ + if (_wcsnicmp(shortpath + 4, L"UNC\\", 4) == 0) { + lstrcatW(tmplongpath, L"UNC\\"); + lp = sp = 8; + FIXME("UNC Extended pathname %s\n", debugstr_w(shortpath)); + } + else if (shortpath[4] && shortpath[5] == ':') { + tmplongpath[lp++] = shortpath[sp++]; + tmplongpath[lp++] = shortpath[sp++]; + } + } + if (shortpath[0] == '\\' && shortpath[1] == '\\') { FIXME( "UNC pathname %s\n", debugstr_w(shortpath) ); -- GitLab https://gitlab.winehq.org/wine/wine/-/merge_requests/10192