On 6/29/2022 9:18 AM, Norton Allen wrote:
On 6/29/2022 7:39 AM, Andrey Repin wrote:
Greetings, Norton Allen!
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
----------------^
$ getfacl foo
I will collect this shortly, but IIRC, getfacl showed it was not set.
I did see it set there under 'flags' on the system that works.
nort@EAS-SOFTWAREE1B ~
$ ls -ld foo
drwxrwxr-x 1 nort flight 0 Jun 29 06:25 foo
nort@EAS-SOFTWAREE1B ~
$ chmod g+s foo
nort@EAS-SOFTWAREE1B ~
$ ls -ld foo
drwxrwxr-x 1 nort flight 0 Jun 29 06:25 foo
nort@EAS-SOFTWAREE1B ~
$ getfacl foo
# file: foo
# owner: nort
# group: flight
user::rwx
group::rwx
other::r-x
I ran strace, and it looks like the correct system call parameter is
getting passed.
I am curious as to how the sticky bit is implemented.
First see if it was set or not.
It isn't obvious what underlying Windows functionality (if any) is
applied.
It does. But the big question is, where do you try to do that.
If this is inside Cygwin installation root, then things could work
more or
less POSIX'y. If this is outside Cygwin root (f.e. in your system
profile), it
may or may not work completely, depends how did you mount /cygdrive
prefix.
I will confirm (shortly), but I'm pretty sure these tests were done
under vanilla /home (so c:\cygwin64\home)
Confirmed (as shown above). Tested in /home/nort on directory /home/nort/foo
Ah, just checked on a system where this works, and creating a file
in the
directory from the
command shell does not set the group, so presumably this
functionality is
all within cygwin. That works for my application, except when it
doesn't.
Any suggestions on what I should look for?
Look if you could avoid using +s. Isn't DACL enough?
Am I correct that DACL is not available unless I am on a domain? This
is for a field computer, so connection to a domain is generally more
problematic than helpful.
So is this implemented using DACL under the hood? And is that expected
to fail without a domain?
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