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* [newlib-cygwin/cygwin-3_3-branch] Cygwin: path_conv: do not get confused by a directory with `.lnk` suffix
@ 2022-01-18 11:02 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2022-01-18 11:02 UTC (permalink / raw)
To: cygwin-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=7a8622667f479f58b61a4ecc49090ebb814c78bd
commit 7a8622667f479f58b61a4ecc49090ebb814c78bd
Author: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Mon Jan 17 21:20:45 2022 +0100
Cygwin: path_conv: do not get confused by a directory with `.lnk` suffix
When trying to create a directory called `xyz` in the presence of a
directory `xyz.lnk`, the Cygwin runtime errors out with an `ENOENT`.
The root cause is actually a bit deeper: the `symlink_info::check()`
method tries to figure out whether the given path refers to a symbolic
link as emulated via `.lnk` files, but since it is a directory, that is
not the case, and that hypothesis is rejected.
However, the `fileattr` field is not cleared, so that a later
`.exists()` call on the instance mistakenly thinks that the symlink
actually exists. Let's clear that field.
This fixes https://github.com/msys2/msys2-runtime/issues/81
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Diff:
---
winsup/cygwin/path.cc | 1 +
1 file changed, 1 insertion(+)
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index 5ab75f105..87ac2404a 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -3336,6 +3336,7 @@ restart:
hasn't been found. */
if (ext_tacked_on && !had_ext && (fileattr & FILE_ATTRIBUTE_DIRECTORY))
{
+ fileattr = INVALID_FILE_ATTRIBUTES;
set_error (ENOENT);
continue;
}
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2022-01-18 11:02 [newlib-cygwin/cygwin-3_3-branch] Cygwin: path_conv: do not get confused by a directory with `.lnk` suffix Corinna Vinschen
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