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Date:	Thu, 28 May 2020 14:12:03 +0600 (YEKT)
To:	cygwin AT cygwin DOT com
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Subject:	Seems like a bug with mkfifo -m
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Thread-Topic:	Seems like a bug with mkfifo -m
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Hi, all

When i ran cygwin 2.x, i used mkfifo -m 0600 file to create a named pipe with no user and group permissions.

in the latest cygwin the above command creates device with 0644 permissions. And i cant drop it to 0600:

cygcheck.exe -V
cygcheck (cygwin) 3.1.4

$ umask 0077
$ touch somefile; ls -l somefile
-rw------- 1 admin absent 0 may 26 18:15 somefile

$ mkfifo -m 0600 somefifo; ls -l somefifo
prw-r--r-- 1 admin absent 0 may 26 18:16 somefifo

$ chmod 600 somefifo; ls -l somefifo
prw-r--r-- 1 admin absent 0 may 26 18:16 somefifo



In old-good cygwin 2.x the command works as expected:

$ cygcheck.exe -V
cygcheck (cygwin) 2.9.0

$ umask
0022

$ mkfifo -m 0600 somefifo; ls -l somefifo
prw------- 1 builduser Domain Users 0 May 26 18:21 somefifo



I've also questioned the topic at https://superuser.com/questions/1555204/cygwin-3-x-mkfifo-m0600-creates-named-pipe-with-0644-permissions


best regards,
 Yoshi kakbudto

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