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Message-ID: <c7a947f3-229b-4ac9-a999-9f561a4aabcb@maxrnd.com>
Date: Mon, 28 Apr 2025 21:33:37 -0700
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Subject: Re: Windows 10 Home and sshfs
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From: Mark Geisert via Cygwin <cygwin AT cygwin DOT com>
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Hi David,

You did much more than what I asked you to, but we'll work with that.
Comments inlined and appended below...

On 4/28/2025 12:45 PM, David Christensen via Cygwin wrote:
> On 4/27/25 21:19, Mark Geisert via Cygwin wrote:
>> That DLL is deficient. It is missing the cygfuse_report() entry 
>> despite cygcheck saying (in an earlier post) it is version 3.2.0-3. 
>> gendef in a working environment here starts with:
>> ;
>> ; Definition file of cygfuse-3.2.dll
>> ; Automatic generated by gendef
>> ; written by Kai Tietz 2008
>> ;
>> LIBRARY "cygfuse-3.2.dll"
>> EXPORTS
>> __gcc_deregister_frame
>> __gcc_register_frame
>> cygfuse_report            <<--- here we are
>> fuse_apply_conn_info_opts
>> fuse_buf_copy
>>
>> I would suggest to manually delete that DLL from /bin, and rerun the 
>> Cygwin Installer to reinstall cygfuse. Then use gendef again to verify 
>> "cygfuse_report" is present in its output. If it isn't, we have some 
>> kind of distribution issue that I'll need to consider. But hopefully 
            ^^^^^^^^^^^^ packaging is what I meant

>> gendef will show that entry point.
>>
>> A simple test after that would be "sshfs -h" before trying to mount 
>> something with sshfs.

To repeat, when you're at a point of testing sshfs, please test with
     sshfs -h
before trying anything else.  It will point out any problems with your 
local setup without involving any other systems and their possible issues.

>>
>> Thanks and with fingers crossed,
>>
>> ..mark

There was no need to reinstall Cygwin, but...

> I tried to uninstall Cygwin per:
> 
> https://cygwin.fandom.com/wiki/Uninstalling_Cygwin
> 
> 
> The instructions are partially incorrect.

Please use the Cygwin FAQ rather than some random site which may or may 
not be correct and/or up-to-date.  In this specific case:
     https://cygwin.com/faq.html#faq.setup.uninstall-all
You can easily get to the FAQ from Cygwin's home page https://cygwin.com

> I ran Cygwin64 Terminal, and stopped and removed Cygwin sshd:
> 
> 2025-04-27 23:07:31 admin AT dq67sw ~
> $ cygrunsrv --stop cygsshd
> 
> 2025-04-27 23:07:36 admin AT dq67sw ~
> $ cygrunsrv --remove cygsshd
> 
> 
> I deleted the C:\cygwin64 directory.
> 
> 
> I was unable to remove the Cygwin folder from the Start button apps menu.
> 
> 
> https://www.makeuseof.com/windows-start-menu-add-remove-items/
> 
> Says:
> 
> "You can either display or remove all the items from this section. So,
> there's no option for adding or removing just one specific thing.
> However, you can remove particular apps from the "Most used" and
> "Recently added" subsections."

Cygwin installations and updates are handled exclusively by the Cygwin 
Installer that you get from the Cygwin home page.  Windows doesn't have 
a facility to remove Cygwin.

> "cygwin" is not present in the "Path" environment variable.
> There is no environment variable "CYGWIN".

Alright, you've uninstalled Cygwin.

> I ran Cygwin setup-x86_64.exe version 2.933 and installed the default 
> Cygwin system.
> 
> 
> I ran Cygwin setup-x86_64.exe version 2.933 and installed the package 
> sshfs 3.7.2-2.

OK.

> I restarted Windows.

Not necessary, but in the spirit of an abundance of caution, OK.

> When I run Cygwin64 Terminal and try to use sshfs:
> 
> admin AT dq67sw ~
> $ sshfs dpchrist AT f5:/var/local/samba/dpchrist /samba
> cygfuse: initialization failed: winfsp-x64.dll not found

Using the simple "sshfs -h" testcase mentioned above should have the 
same result.  These straces below are not useful.

> admin AT dq67sw ~
> $ strace sshfs dpchrist AT f5:/var/local/samba/dpchrist /samba 2>&1 | wc
>      342    3370   35142
> 
> admin AT dq67sw ~
> $ strace sshfs dpchrist AT f5:/var/local/samba/dpchrist /samba 2>&1 | gzip 
> -9 > strace-sshfs.gz
> 
> 
> strace-sshfs.gz is attached.

Please don't compress attachments on emails to the Cygwin mailing list, 
just attach them.

Alright, here's where we stand.  The "winfsp-x64.dll not found" is 
expected here because you haven't run WinFSP installer yet.  Don't do 
that yet.

Please run the following from a Cygwin terminal window:
     gendef - /bin/cygfuse-3.2.dll
Please note the spaces before and after "-" in the above command.
You don't have to post the output; just make sure "cygfuse_report" 
appears near the top of that output.

If the test in the previous paragraph worked, then install WinFSP.  You 
will see a button offering to install FUSE for Cygwin or something like 
that.  DO NOT press that button.  I think having pressed that last time 
is the root cause of the issues you've been seeing.  I can explain after 
we get you working.

Just click through the WinFSP install and let it complete.  Now go back 
to your Cygwin terminal window and do the test:
     sshfs -h
and see that you get a long list of sshfs option descriptions without 
any error messages.

If that worked, then do this before anything else:
     rm /var/run/fuse.mounts

Now try the sshfs command you've tried earlier and tell us what happens.

..mark

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