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Date: Fri, 8 Nov 2024 20:51:09 +0900
To: cygwin AT cygwin DOT com
Subject: Re: SMBFS mount's file cannot be made executable
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From: Takashi Yano via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
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Hi all,

On Thu, 8 Aug 2019 15:41:55 +0000
"Lavrentiev, Anton (NIH/NLM/NCBI) [C] wrote:
> Hi,
> 
> Here's the situation, I have a netmount "Z:" but I cannot make any files on it executable from Cygwin:
> 
> $ mount
> ...
> Z: on /cygdrive/z type smbfs (binary,posix=0,user,noumount,auto)
> 
> $ cd /cygdrive/z
> 
> $ pwd
> /cygdrive/z
> 
> $ cat a.c
> #include <stdio.h>
> 
> int main()
> {
>     printf("Hello world!\n");
>     return 0;
> }
> 
> $ gcc -Wall a.c
> 
> $ echo $?
> 0
> 
> $ ./a.exe
> -bash: ./a.exe: Permission denied
> 
> $ ls -l a.exe
> -rw-rw-r--+ 1 lavr cppcore 157753 Aug  8 11:29 a.exe
> 
> $ getfacl.exe a.exe
> # file: a.exe
> # owner: lavr
> # group: cppcore
> user::rw-
> user:lavr:rw-
> group::r--
> group:cppcore:r--
> mask::rw-
> other::r--
> 
> $ chmod a+x a.exe
> 
> $ echo $?
> 0
> 
> $ ls -l a.exe
> -rw-rw-r--+ 1 lavr cppcore 157753 Aug  8 11:29 a.exe
> 
> $ getfacl.exe a.exe
> # file: a.exe
> # owner: lavr
> # group: cppcore
> user::rw-
> user:lavr:rw-
> group::r--
> group:cppcore:r--
> mask::rw-
> other::r--
> 
> $ ./a.exe
> -bash: ./a.exe: Permission denied
> 
> What's missing?  How to make the file executable, and why chmod() lies about all-good when it does nothing?
> Any ideas please?
> 
> Thanks!
> 
> P.S. I have another netmount "drive" (U:) which Cygwin identifies as "netapp", and everything works on that drive,
> regarding the execution permission.
> 
> U: on /cygdrive/u type netapp (binary,posix=0,user,noumount,auto)
> 
> Also, any file that I give the "x" permission from outside Cygwin (e.g. from Linux) on the SMBFS drive "Z:",
> becomes executable:
> 
> Cygwin> $ gcc -Wall a.c
> 
> Linux> $ chmod a+x a.exe
> 
> Cygwin> $ ./a.exe
> Hello world!

Does anyone know what was the conclusion of this issue?
I have encountered the same issue and cannot find the
solution so far.


-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

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