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From: "Frank, Matthew I" <matthew DOT i DOT frank AT intel DOT com>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: cp creates unreadable file on Windows 7
Date: Wed, 9 Oct 2013 21:30:52 +0000
Message-ID: <8FEF00DDD6C58843BF4ED3C1DCF80E9F6421A227@FMSMSX106.amr.corp.intel.com>
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I believe my problem is identical to the one reported in:
http://cygwin.com/ml/cygwin/2012-02/msg00456.html, but that message chain ended with
"mount your file system noacl" which isn't an option for me, so I'm looking for
other alternatives.

I create a file using cmd.exe in a directory created by cmd.exe.  Then in Cygwin bash I
mkdir a directory (two levels deep) and cp the file into the new directory.  The resulting
file is not readable by any Windows or Cygwin executable.  I can't say whether this is
correct or not, but it surprised me.

I am on a corporate network (logged in using network credentials).  The filesystem is NTFS,
the machine is Windows 7.  I am an Administrator on the machine.  I am using the new 64-bit
Cygwin installed in c:\users\mifrank\cygwin64, but the problem was originally reported by
several of my users, and they are using slightly older 32-bit versions of Cygwin installed
in c:\cygwin.

Reproducer.  Step 1 (must be done in a cmd.exe shell.)

	C:\>md dos-level1
	C:\>echo foo > dos-level1\bar
	C:\>cat dos-level1\bar
	foo
	C:\>icacls.exe dos-level1\
	dos-level1\ BUILTIN\Administrators:(I)(F)
            BUILTIN\Administrators:(I)(OI)(CI)(IO)(F)
            NT AUTHORITY\SYSTEM:(I)(F)
            NT AUTHORITY\SYSTEM:(I)(OI)(CI)(IO)(F)
            BUILTIN\Users:(I)(OI)(CI)(RX)
            NT AUTHORITY\Authenticated Users:(I)(M)
            NT AUTHORITY\Authenticated Users:(I)(OI)(CI)(IO)(M)

	Successfully processed 1 files; Failed processing 0 files
	C:\>icacls.exe dos-level1\bar
	dos-level1\bar BUILTIN\Administrators:(I)(F)
               NT AUTHORITY\SYSTEM:(I)(F)
           	   BUILTIN\Users:(I)(RX)
               NT AUTHORITY\Authenticated Users:(I)(M)

	Successfully processed 1 files; Failed processing 0 files

Step 2 (from Cygwin bash shell)

	$ cygcheck -V
	cygcheck (cygwin) 1.7.25
	$ cd /cygdrive/c/
	$ groups
	Domain Users Users
	$ umask
	0022
	$ mkdir --parents cyg-level1/cyg-level2
	$ cat dos-level1/bar
	foo
	$ cp dos-level1/bar cyg-level1/cyg-level2/
	$ cat cyg-level1/cyg-level2/bar
	cat: cyg-level1/cyg-level2/bar: Permission denied

	$ icacls.exe cyg-level1/cyg-level2/
	cyg-level1/cyg-level2/ AMR\mifrank:(F)
                       AMR\Domain Users:(RX)
                       Everyone:(RX)
                       BUILTIN\Administrators:(F)
                       NT AUTHORITY\SYSTEM:(F)
                       BUILTIN\Users:(RX)
                       NT AUTHORITY\Authenticated Users:(M)
                       CREATOR OWNER:(OI)(CI)(IO)(F)
                       CREATOR GROUP:(OI)(CI)(IO)(RX)
                       Everyone:(OI)(CI)(IO)(RX)

	Successfully processed 1 files; Failed processing 0 files
	$ icacls.exe cyg-level1/cyg-level2/bar
	cyg-level1/cyg-level2/bar AMR\mifrank:(D,Rc,WDAC,WO,RA,WA)
                          AMR\Domain Users:(Rc,S,RA)
                          Everyone:(Rc,S,RA)

	Successfully processed 1 files; Failed processing 0 files

On the other hand:

	$ echo fromcyg > cyg-level1/cyg-level2/baz
	$ cat cyg-level1/cyg-level2/baz
	fromcyg
	$ icacls.exe cyg-level1/cyg-level2/baz
	cyg-level1/cyg-level2/baz AMR\mifrank:(R,W,D,WDAC,WO)
                          AMR\Domain Users:(R)
                          Everyone:(R)

	Successfully processed 1 files; Failed processing 0 files

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