[PATCH 1/1] ntdll: Collapse paths in get_unix_full_path.

[William Horvath]

From: William Horvath

Before the commit in question, both of these paths would be parsed as valid (with e.g. FindFirstFile):
Z:\tmp\*
/tmp//*

After the commit, only the DOS path is accepted, while the Unix path returns ERROR_INVALID_NAME.

Fixes: ffa88c3993c3da97c7403209ef2068b2e3fac66f
---
 dlls/ntdll/path.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dlls/ntdll/path.c b/dlls/ntdll/path.c
index 5118ce4ee9b..f5c8377b0ef 100644
--- a/dlls/ntdll/path.c
+++ b/dlls/ntdll/path.c
@@ -564,6 +564,11 @@ static BOOL get_unix_full_path( LPCWSTR name, LPWSTR buffer, ULONG size, ULONG *
                 memcpy( buffer, name, len );
                 memcpy( buffer + len / sizeof(WCHAR), str.Buffer + str.Length / sizeof(WCHAR),
                         file_len + sizeof(WCHAR) );
+                /* collapse duplicate backslashes and path components */
+                if (buffer[5] == ':')
+                    collapse_path( buffer, 3 );  /* i.e. \??\Z:\ */
+                else
+                    collapse_path( buffer, 1 );  /* other paths */
                 *reqsize -= sizeof(WCHAR);
             }
             ret = TRUE;