Permission Problems

[Marco Atzeri]

On 25/04/2016 02:29, Dave Caswell wrote:
> This is a followup to: https://cygwin.com/ml/cygwin/2016-03/msg00345.html
>
> To recap, making three nested directories  on a non-C drive produces a
> third level which is unusable.
>
> davec@MERCURYWIN ~/python
> $ rm -rf g1
> davec@MERCURYWIN ~/python
> $ mkdir g1 g1/g2 g1/g2/g3
> davec@MERCURYWIN ~/python
> $ ls -la g1 g1/g2 g1/g2/g3
> g1:
> total 12
> drwxrwxr-x+ 1 davec None 0 Mar 16 20:23 ./
> drwxrwx---+ 1 davec Users 0 Mar 16 20:23 ../
> drwsrwsr-t+ 1 davec None 0 Mar 16 20:23 g2/
> g1/g2:
> total 0
> drwsrwsr-t+ 1 davec None 0 Mar 16 20:23 ./
> drwxrwxr-x+ 1 davec None 0 Mar 16 20:23 ../
> d--Srws--T+ 1 davec None 0 Mar 16 20:23 g3/
> ls: cannot open directory 'g1/g2/g3': Permission denied
>
> The problem went away with Cygwin 2.5.0-0.7 but is back with 2.5.1-1,
> and goes away when I downgrade back to 2.5.0-1
>
> More info:  I tested on a couple of external drives and things worked
> properly there.   Can I have screwed up the permissions on my D drive
> so that cygwin gets confused but Windows still works?
>
> thanks

It works fine for me.
"E:" is an external NTFS USB disk

$ mount
E:/cygwin64/bin on /usr/bin type ntfs (binary,auto)
E:/cygwin64/lib on /usr/lib type ntfs (binary,auto)
E:/cygwin64 on / type ntfs (binary,auto)
C: on /cygdrive/c type ntfs (binary,posix=0,user,noumount,auto)
E: on /cygdrive/e type ntfs (binary,posix=0,user,noumount,auto)

  $ cd /cygdrive/e/temp

  $ mkdir g1 g1/g2 g1/g2/g3

  $ ls -la g1 g1/g2 g1/g2/g3
g1:
total 4.0K
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 .
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 ..
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 g2

g1/g2:
total 0
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 .
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 ..
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 g3

g1/g2/g3:
total 0
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 .
drwxr-xr-x+ 1 marco Administrators 0 Apr 25 07:59 ..

  $ icacls .
. GE-MATZERI-EU\0356EU:(F)
   BUILTIN\Administrators:(RX)
   Everyone:(RX)
   NT AUTHORITY\SYSTEM:(OI)(CI)(F)
   CREATOR OWNER:(OI)(CI)(IO)(F)
   CREATOR GROUP:(OI)(CI)(IO)(RX)
   Everyone:(OI)(CI)(IO)(RX)

$ icacls g1/g2/g3
g1/g2/g3 NULL SID:(DENY)(Rc,S,REA,X,DC)
          GE-MATZERI-EU\0356EU:(F)
          BUILTIN\Administrators:(RX)
          NT AUTHORITY\SYSTEM:(RX,W,DC)
          Everyone:(RX)
          NULL SID:(OI)(CI)(IO)(DENY)(Rc,S,REA,X,DC)
          CREATOR OWNER:(OI)(CI)(IO)(F)
          CREATOR GROUP:(OI)(CI)(IO)(RX)
          NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(RX,W,DC)
          Everyone:(OI)(CI)(IO)(RX)

I suggest to use icacls and eventually "setfacl -b"
for permission cleaning if needed.

Regards
Marco



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