The file "zam" below has slightly unusual windows permissions -
it does not inherit from it's parent dir, the owner of the
file has no ACES, another user "staffuser1" has full control.
run:
cp zam zam-cp
then:
"staffuser1" can 'cat' zam-cp, but 'cmd /c type zam-cp' fails, is that
a bug?
If you look at the rights on zam-cp (search ahead for "dacl zam-cp")
I do not see how cygwin 'cat' is able to read 'zam-cp' at all,
which "allow permission" accounts for this?
--
*thanks*,
Tom
# --------------------------------------------------------------------
# two examples of puzzling 'cp' behavior, a fairly new cygwin,
# and an old one (resulting copy unreadable by 'cmd /c type')
# (shell sessions below both done logged in as "staffuser1")
# --------------------------------------------------------------------
//OurHost_onw/d_drive/aut/cyg/tmp $ uname -a
CYGWIN_NT-5.1 OurWorkStn00 1.5.24(0.156/4/2) 2007-01-31 10:57 i686 Cygwin
//OurHost_onw/d_drive/aut/cyg/tmp $ dacl zam
+ setacl -on '\\OurHost_onw\d_drive\aut\cyg\tmp\zam' -ot file -actn list -lst
'f:tab;w:o,g,d,s;i:y;s:n'
\\?\UNC\OurHost_onw\d_drive\aut\cyg\tmp\zam
Owner: BUILTIN\Administrators
Group: DOMxx1\Domain Users
DACL(not_protected):
DOMxx1\staffuser1 full allow no_inheritance
NT AUTHORITY\SYSTEM full allow no_inheritance
SetACL finished successfully.
+ set +x
//OurHost_onw/d_drive/aut/cyg/tmp $ cp zam zam-cp
//OurHost_onw/d_drive/aut/cyg/tmp $ md5sum zam zam-cp
69d61ec73a9426dba64bf17888794b6e *zam
69d61ec73a9426dba64bf17888794b6e *zam-cp
//OurHost_onw/d_drive/aut/cyg/tmp $ head -2 zam-cp
1
2
//OurHost_onw/d_drive/aut/cyg/tmp $ cmd /c type zam-cp
Access is denied.
//OurHost_onw/d_drive/aut/cyg/tmp $ dacl zam-cp
+ setacl -on '\\OurHost_onw\d_drive\aut\cyg\tmp\zam-cp' -ot file -actn list
-lst 'f:tab;w:o,g,d,s;i:y;s:n'
\\?\UNC\OurHost_onw\d_drive\aut\cyg\tmp\zam-cp
Owner: BUILTIN\Administrators
Group: DOMxx1\Domain Users
DACL(protected):
BUILTIN\Administrators
FILE_WRITE_EA+FILE_WRITE_ATTRIBUTES+READ_CONTROL+WRITE_OWNER+WRITE_DAC+DELETE
allow no_inheritance
DOMxx1\Domain Users FILE_READ_EA+FILE_READ_ATTRIBUTES+READ_CONTROL
allow no_inheritance
Everyone FILE_READ_EA+FILE_READ_ATTRIBUTES+READ_CONTROL allow
no_inheritance
SetACL finished successfully.
+ set +x
//OurHost_onw/d_drive/aut/cyg/tmp $
--SNIP/switch to another host, same instance of file, older cygwin:
/tmp $ dacl zam
+ setacl -on 'd:\aut\cyg\tmp\zam' -ot file -actn list -lst
'f:tab;w:o,g,d,s;i:y;s:n'
\\?\d:\aut\cyg\tmp\zam
Owner: BUILTIN\Administrators
Group: DOMxx1\Domain Users
DACL(not_protected):
DOMxx1\staffuser1 full allow no_inheritance
NT AUTHORITY\SYSTEM full allow no_inheritance
SetACL finished successfully.
+ set +x
/tmp $ head zam
1
2
3
4
5
6
7
8
9
10
/tmp $ ls -l zam
----------+ 1 Administrators Domain Users 51 Mar 1 13:48 zam
/tmp $ cp zam zam-cp
/tmp $ cat zam-cp
cat: zam-cp: Permission denied
/tmp $ cmd /c type zam-cp
Access is denied.
/tmp $ dacl zam-cp
+ setacl -on 'd:\aut\cyg\tmp\zam-cp' -ot file -actn list -lst
'f:tab;w:o,g,d,s;i:y;s:n'
\\?\d:\aut\cyg\tmp\zam-cp
Owner: BUILTIN\Administrators
Group: DOMxx1\Domain Users
DACL(protected):
BUILTIN\Administrators
FILE_WRITE_EA+FILE_WRITE_ATTRIBUTES+READ_CONTROL+WRITE_OWNER+WRITE_DAC+DELETE
allow no_inheritance
DOMxx1\Domain Users FILE_READ_EA+FILE_READ_ATTRIBUTES+READ_CONTROL
allow no_inheritance
Everyone FILE_READ_EA+FILE_READ_ATTRIBUTES+READ_CONTROL allow
no_inheritance
SetACL finished successfully.
+ set +x
/tmp $ chmod +r zam-cp
/tmp $ head zam-cp
1
2
3
4
5
6
7
8
9
10
/tmp $ md5sum zam zam-cp
69d61ec73a9426dba64bf17888794b6e *zam
69d61ec73a9426dba64bf17888794b6e *zam-cp
/tmp $ uname -a
CYGWIN_NT-5.2 OurHost_onw 1.5.20s(0.155/4/2) 20060403 13:33:45 i686 Cygwin
/tmp $ --
# --------------------------------------------------------------------
# how to create test case perms on file "zam"
# --------------------------------------------------------------------
ME=$(id -un)
seq 20 > zam
chgrp "domain users" zam;echo y|cacls zam /g $ME:f system:f
setacl -on "$(cygpath -aw zam)" -ot file -actn setowner -ownr
"n:administrators"
# setacl available here:
# http://sourceforge.net/project/showfiles.php?group_id=69165
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
