Mail Archives: cygwin/2022/07/02/12:17:29

"Lavrentiev, Anton \(NIH/NLM/NCBI\) \[C\] via Cygwin" <cygwin AT cygwin DOT com> · Sat, 2 Jul 2022 16:16:16 +0000

I forgot to mention that my "umask" is the standard 022...

The man page says that for directories with the ACLs, it is ignored.

So in my code bind() wouldn't have created the socket with 0777, and
that's fine!  Which is why I call fchmod() to fix the permissions up,
and THAT does not work.  BTW, should I have called chmod() instead (which
is what the command line chmod does), the permissions would have been
set correctly on the socket file, but fchmod() would have misreported
them again (this time looks like a carryover from an earlier umask(0))!

$ diff sun1.c sun.c
37c37
<     if (chmod(SOCKET, 0666) < 0)
---
>     if (fchmod(s, 0666) < 0)

$ pwd 
/cygdrive/g/cygwin
$ mkdir subdir
$ cd subdir
$ ~/sun1
fstat mode = 140777
stat mode = 140666
$ ls -la
total 17
drwxrwxr-x+ 1 ANTON None 0 Jul  2 12:06 ./
drwxrwx---+ 1 ANTON None 0 Jul  2 12:06 ../
srw-rw-rw-+ 1 ANTON None 0 Jul  2 12:06 .socket=

Anton Lavrentiev
Contractor NIH/NLM/NCBI

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To:	Ken Brown <kbrown AT cornell DOT edu>, "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	RE: Weird issue with file permissions
Thread-Topic:	Weird issue with file permissions
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Date:	Sat, 2 Jul 2022 16:16:16 +0000
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From:	"Lavrentiev, Anton \(NIH/NLM/NCBI\) \[C\] via Cygwin" <cygwin AT cygwin DOT com>
Reply-To:	"Lavrentiev, Anton \(NIH/NLM/NCBI\) \[C\]" <lavr AT ncbi DOT nlm DOT nih DOT gov>
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