Hi Corinna, On Tue, 23 Mar 2021, Corinna Vinschen wrote:
> On Mar 22 16:51, Johannes Schindelin via Cygwin-patches wrote: > > When installing e.g. Python via the Windows Store, it is common that the > > `python3.exe` entry in the `PATH` is not actually an executable at all, > > but an "app executaion alias" (i.e. a special class of reparse point). > > > > These filesystem entries are presented as 0-size files, but they are not > > readable, which is why Cygwin has problems to execute them, with the error > > message "Permission denied". > > > > This issue has been reported a couple of times in the Git for Windows and > > in the MSYS2 project, and even in Cygwin > > (https://cygwin.com/pipermail/cygwin/2020-May/244969.html, the thread > > devolved into a discussion about Thunderbird vs Outlook before long, > > though). > > > > The second patch fixes that, and for good measure, the first patch teaches > > Cygwin to treat these reparse points as symbolic links. > > > > Changes since v1: > > > > - Introduce and use `struct _REPARSE_APPEXECLINK_BUFFER`. > > > > Johannes Schindelin (2): > > Treat Windows Store's "app execution aliases" as symbolic links > > Allow executing Windows Store's "app execution aliases" > > > > winsup/cygwin/path.cc | 40 ++++++++++++++++++++++++++++++++++++++++ > > winsup/cygwin/spawn.cc | 7 +++++++ > > 2 files changed, 47 insertions(+) > > I decided to apply this now, while we're still discussing the osf handle > problem. > > Pushed with two fixes. I prepended "Cygwin:" to the git log subject and > I patched this compile time problem: > > path.cc: In function ‘int check_reparse_point_target(HANDLE, bool, > PREPARSE_DATA_BUFFER, PUNICODE_STRING)’: > path.cc:2581:25: error: ‘struct _REPARSE_APPEXECLINK_BUFFER’ has no member > named ‘Strings’ > 2581 | WCHAR *buf = rpl->Strings; > | ^~~~~~~ Uh oh. Sorry for the breakage. I thought I had test-compiled it... Apparently I didn't (or I ignored a warning or something). > > I also added this to the release notes. Thank you! Ciao, Johannes
