- If an UNC path is mounted to a drive using SMB3.11, accessing to
the drive fails with error "Too many levels of symbolic links."
This patch fixes the issue.
---
winsup/cygwin/path.cc | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index 87ac2404a..4ad4e0821 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -3495,10 +3495,19 @@ restart:
/* If incoming path has no trailing backslash, but final path
has one, drop trailing backslash from final path so the
- below string comparison has a chance to succeed. */
+ below string comparison has a chance to succeed.
+ On the contrary, if incoming path has trailing backslash,
+ but final path does not have one, add trailing backslash
+ to the final path. */
if (upath.Buffer[(upath.Length - 1) / sizeof (WCHAR)] != L'\\'
- && fpbuf[ret - 1] == L'\\')
+ && fpbuf[ret - 1] == L'\\')
fpbuf[--ret] = L'\0';
+ if (upath.Buffer[(upath.Length - 1) / sizeof (WCHAR)] == L'\\'
+ && fpbuf[ret - 1] != L'\\' && ret < NT_MAX_PATH - 1)
+ {
+ fpbuf[ret++] = L'\\';
+ fpbuf[ret] = L'\0';
+ }
fpbuf[1] = L'?'; /* \\?\ --> \??\ */
RtlInitCountedUnicodeString (&fpath, fpbuf, ret * sizeof (WCHAR));
if (!RtlEqualUnicodeString (&upath, &fpath, !!ci_flag))
--
2.34.1
