Cygwin access denied

On XP/Pro, \cygwin\bin\sed.exe gets Access Denied; Why?

what am I missing?

Jeff@ltbeard /usr/bin
$ sed.exe -h
bash: /usr/bin/sed.exe: Permission denied

yet cygwin perms are correct
$ ls -l sed.exe
-rwxrwxr-x 1 nMaster Users 97280 Aug 2 2006 sed.exe

and XP ACLs look good (to me at least)
C:\cygwin\bin>cacls ..
C:\cygwin BUILTIN\Administrators:(OI)(CI)F
NT AUTHORITY\SYSTEM:(OI)(CI)F
<Account Domain not found>F
CREATOR OWNER:(OI)(CI)(IO)F
BUILTIN\Users:(OI)(CI)R
BUILTIN\Users:(CI)(special access:)
FILE_APPEND_DATA

BUILTIN\Users:(CI)(special access:)
FILE_WRITE_DATA

C:\cygwin\bin>cacls .
C:\cygwin\bin BUILTIN\Administrators:(OI)(CI)(NP)F
BUILTIN\Users:(OI)(CI)R
BUILTIN\Administrators:(OI)(CI)F
NT AUTHORITY\SYSTEM:(OI)(CI)F
LTBEARD\Jeff:F
CREATOR OWNER:(OI)(CI)(IO)F
BUILTIN\Users:(OI)(CI)R
BUILTIN\Users:(CI)(special access:)
FILE_APPEND_DATA

BUILTIN\Users:(CI)(special access:)
FILE_WRITE_DATA



C:\cygwin\bin>cacls sed.exe
C:\cygwin\bin\sed.exe LTBEARD\nMaster:(special access:)
STANDARD_RIGHTS_ALL
DELETE
READ_CONTROL
WRITE_DAC
WRITE_OWNER
SYNCHRONIZE
STANDARD_RIGHTS_REQUIRED
FILE_GENERIC_READ
FILE_GENERIC_WRITE
FILE_GENERIC_EXECUTE
FILE_READ_DATA
FILE_WRITE_DATA
FILE_APPEND_DATA
FILE_READ_EA
FILE_WRITE_EA
FILE_EXECUTE
FILE_READ_ATTRIBUTES
FILE_WRITE_ATTRIBUTES

BUILTIN\Users:R
Everyone:R
BUILTIN\Users:(special access:)
WRITE_DAC
SYNCHRONIZE
FILE_WRITE_DATA
FILE_WRITE_EA
FILE_EXECUTE
FILE_WRITE_ATTRIBUTES
So why the permission errors?

(and yes, I've reinstalled it twice; first just overlay the program,
second, delete the program first (to clear the ACL) and then reinstall -- same error :( )

It could be any of the DLLs or data files that sed is trying to access. Maybe run the file monitor from sysinternals and see which file access is denied.

It could be any of the DLLs or data files that sed is trying to access. Maybe run the file monitor from sysinternals and see which file access is denied.
even just SED -H is denied, so it's not a data file. I fetch the F.M. and try that :)

Also, I forgot the cool Linux (also in Cygwin) utility called strace that shows you what system calls a program uses and the results of these.

cool -- I forgot that too. However ...
$ strace -d -o ./strace.log /usr/bin/sed.exe
strace: error creating process C:\cygwin/bin\sed.exe, (error 5)
while tracing LS works perfectly!

The puzzle continues ...

filemon results
09:50 bash.exe:1856 FASTIO_QUERY_OPEN C:\cygwin\bin\sed.exe SUCCESS Attributes: A
09:50 bash.exe:1856 IRP_MJ_CREATE C:\cygwin\bin\sed.exe SUCCESS Options: Open Access: 00020080
09:50 bash.exe:1856 IRP_MJ_QUERY_INFORMATION C:\cygwin\bin\sed.exe SUCCESS FileNameInformation
09:50 bash.exe:1856 IRP_MJ_QUERY_VOLUME_INFORMATION C:\cygwin\bin\sed.exe SUCCESS FileFsVolumeInformation
09:50 bash.exe:1856 IRP_MJ_QUERY_INFORMATION C:\cygwin\bin\sed.exe SUCCESS FileAllInformation
09:50 bash.exe:1856 IRP_MJ_QUERY_SECURITY C:\cygwin\bin\sed.exe BUFFER OVERFLOW


while other IRP_MJ_QUERY.. complete ok
09:50 bash.exe:1856 IRP_MJ_CREATE C:\cygwin\bin\sed.exe SUCCESS Options: Open Access: 001000A1
09:50 bash.exe:1856 IRP_MJ_QUERY_INFORMATION C:\cygwin\bin\sed.exe SUCCESS FileNameInformation
09:50 bash.exe:1856 FASTIO_QUERY_BASIC_INFO C:\cygwin\bin\sed.exe SUCCESS Attributes: A
09:50 bash.exe:1856 FASTIO_QUERY_STANDARD_INFO C:\cygwin\bin\sed.exe SUCCESS Length: 97280
09:50 bash.exe:1856 IRP_MJ_QUERY_INFORMATION C:\cygwin\bin\sed.exe SUCCESS FileNameInformation
09:50 bash.exe:1856 FASTIO_QUERY_OPEN C:\cygwin\bin\sed.exe SUCCESS Attributes: A
09:50 bash.exe:1856 FASTIO_QUERY_STANDARD_INFO C:\cygwin\bin\sed.exe SUCCESS Length: 97280
09:50 bash.exe:1856 FASTIO_QUERY_STANDARD_INFO C:\cygwin\bin\sed.exe SUCCESS Length: 97280
09:50 bash.exe:1856 IRP_MJ_QUERY_INFORMATION C:\cygwin\bin\sed.exe SUCCESS FileNameInformation
09:50 bash.exe:1856 IRP_MJ_CREATE C:\cygwin\bin\sed.exe SUCCESS Options: Open Access: Read
09:50 bash.exe:1856 FASTIO_QUERY_STANDARD_INFO C:\cygwin\bin\sed.exe SUCCESS Length: 97280
09:50 bash.exe:1856 IRP_MJ_READ C:\cygwin\bin\sed.exe SUCCESS Offset: 0 Length: 8192
09:50 System:4 IRP_MJ_CLOSE C:\cygwin\bin\sed.exe SUCCESS


is a puzzlement! (from the King & I)

I found a static linked version of sed in an archive name UnxUtils.zip

I extracted ONLY sed.exe, stored it into /usr/local/bin and verified that it would run.
rm -i /usr/bin/sed.exe then cleaned up the issue.

I had previously attempted to reinstall sed frm the cygwin setup service, but to no avail, so I was forced into this approach.

It drives me nuts to not understand what caused this, but sometimes you just have to move on :)