On 6/29/2022 9:18 AM, Norton Allen wrote:
On one machine I have, chmod g+s fails to set the sticky bit. The
>>> command
does not return any error, but ls -l continues to show the bit not
set.
$ mkdir foo
$ chgrp flight foo
$ chmod g+ws foo
$ ls -ld foo
drwxrwxr-x+ 1 nort flight 0 Jun 29 06:50 foo
Hi. The permission bits are implemented as normal Window's DACLs
(Discretionary Access List). +s is implemented magically with the NULL
SID. You can view it from Explorer or with icacls. Try checking the
return code (echo $?) from chmod. Also try changing perms from
Explorer. You might not be able to set the NULL SID for some reason.
It works for me:
$ ls -ld z
drwxrwsr-x+ 1 wagnerc Users 0 Nov 24 2020 z
$ getfacl z
# file: z
# owner: wagnerc
# group: Users
# flags: -s-
user::rwx
group::r-x
group:Administrators:rwx
group:Users:rwx
mask::rwx
other::r-x
default:user::rwx
default:user:wagnerc:rwx
default:group::r-x
default:group:Administrators:rwx
default:group:Users:rwx
default:mask::rwx
default:other::r-x
$ icacls z
z NULL SID:(DENY)(Rc,S,WD,REA,WEA,X,DC)
APPLEJACK\wagnerc:(F)
BUILTIN\Users:(RX)
BUILTIN\Administrators:(RX,W,DC)
BUILTIN\Users:(RX,W,DC)
Everyone:(RX)
NULL SID:(OI)(CI)(IO)(DENY)(Rc,S,WD,REA,WEA,X,DC)
CREATOR OWNER:(OI)(CI)(IO)(F)
APPLEJACK\wagnerc:(OI)(CI)(IO)(RX,W,DC)
BUILTIN\Users:(OI)(CI)(IO)(RX)
BUILTIN\Administrators:(OI)(CI)(IO)(RX,W,DC)
BUILTIN\Users:(OI)(CI)(IO)(RX,W,DC)
Everyone:(OI)(CI)(IO)(RX)
Successfully processed 1 files; Failed processing 0 files
$ uname -a
CYGWIN_NT-6.1 applejack 3.1.0(0.340/5/3) 2019-11-19 13:58 x86_64 Cygwin
Thanks.
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