On 2020-10-10 13:41, Ken Brown via Cygwin wrote: > On 10/10/2020 12:32 PM, Kaz Kylheku (Cygwin) via Cygwin wrote: >> Hi all, >> >> Running this Cygwin on a Windows 10 system: >> >> 0:DESKTOP-K8055OB:~$ uname -a >> CYGWIN_NT-10.0-WOW DESKTOP-K8055OB 3.1.7(0.340/5/3) 2020-08-22 19:03 i686 >> Cygwi >> >> When a file is created, and permissions set as follows: >> >> 0:DESKTOP-K8055OB:~$ touch tempfile >> 0:DESKTOP-K8055OB:~$ chmod 03777 tempfile >> 0:DESKTOP-K8055OB:~$ ls -l tempfile >> -rwsrwsrwt 1 kaz kaz 0 Oct 10 08:59 tempfile >> >> Then "chmod u=" is not able to clear the owner's permissions to nothing: >> >> 0:DESKTOP-K8055OB:~$ chmod u= tempfile >> 0:DESKTOP-K8055OB:~$ ls -l tempfile >> -rwxrwsrwt 1 kaz kaz 0 Oct 10 08:59 tempfile >> >> As you can see, it has no effect. The expected value is ----rwsrwt. >> >> I tried both with 64 and 32 bit Cygwin: same deal. >> >> This is not a problem with the chmod utility. I ran into this as a failing >> test case against a chmod library function in a programming language. >> >> http://www.kylheku.com/cgit/txr/tree/tests/018/chmod.tl >> >> The test cases pass until the "u=", which fails in the same way. >> This does not use the chmod utility. >> >> It's an issue with the chmod system call. >> >> This used to work on my older Cygwin installation, which was around 2.5. > > FWIW, I can't reproduce this on my system: > > $ uname -a > CYGWIN_NT-10.0-WOW XXX 3.1.7(0.340/5/3) 2020-08-22 19:03 i686 Cygwin > > $ touch tempfile > > $ ls -l tempfile > -rw-r--r-- 1 kbrown None 0 2020-10-10 15:16 tempfile > > $ chmod 03777 tempfile > > $ ls -l tempfile > -rwxrwsrwt 1 kbrown None 0 2020-10-10 15:16 tempfile > > $ chmod u= tempfile > > $ ls -l tempfile > ----rwsrwt 1 kbrown None 0 2020-10-10 15:16 tempfile
D/ACLs on the directory could restore/maintain the permissions: could we please see the output from ls -l, getfacl, and icacls on the directory and file? -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in binary units and prefixes, physical quantities in SI.] -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
