chmod Permission Error with Non-Windows Paths

Holmberg, Eric eholmber@qualcomm.com
Fri Feb 26 18:38:00 GMT 2010 

I'm seeing an "Permission denied" failure when using chmod on a mapped network drive.  The problem doesn't occur on the local drive and if I use a Windows-style backslash in the name, it works?!

CYGWIN_NT-5.1 EHOLMBER-XP 1.7.1(0.218/5/3) 2009-12-07 11:48 i686 Cygwin

$ echo $CYGWIN
nontsec

eholmber@EHOLMBER-XP /cygdrive/b
$ touch test.txt

$ ls -l test.txt
-rwx------+ 1 eholmber Domain Users 0 2010-02-26 11:16 test.txt

$ ls -l .\\test.txt
-rw-r--r-- 1 eholmber Domain Users 0 2010-02-26 11:16 .\test.txt

$ chmod +w test.txt
chmod: changing permissions of `test.txt': Permission denied

$ chmod +w .\\test.txt

$ ls -l .\\test.txt
-rw-r--r-- 1 eholmber Domain Users 0 2010-02-26 11:16 .\test.txt


Any help is greatly appreciated!

Thanks,
Eric



Trimmed down cygcheck -rs output
--------------------------------

Cygwin Configuration Diagnostics
Current System Time: Fri Feb 26 09:48:45 2010

Windows XP Professional Ver 5.1 Build 2600 Service Pack 3

Path:	C:\cygwin\bin
	.\

Output from C:\cygwin\bin\id.exe
UID: 267328(eholmber)
GID: 10513(Domain Users)
544(Administrators)
545(Users)
1005(Debugger Users)

SysDir: C:\WINDOWS\system32
WinDir: C:\WINDOWS

CYGWIN = 'nontsec'
HOME = 'C:\Documents and Settings\eholmber\My Documents'
Path = 'C:\cygwin\bin;.\'

HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\00
  (default) = '\\.\tape1:'
  unix = '/dev/st1'
  fbinary = 0x00000000
  fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\01
  (default) = '\\.\tape0:'
  unix = '/dev/st0'
  fbinary = 0x00000000
  fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\02
  (default) = '\\.\b:'
  unix = '/dev/fd1'
  fbinary = 0x00000000
  fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\03
  (default) = '\\.\a:'
  unix = '/dev/fd0'
  fbinary = 0x00000000
  fsilent = 0x00000001
HKEY_CURRENT_USER\Software\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\04
  (default) = 'C:'
  unix = '/'
  fbinary = 0x00000000
  fsilent = 0x00000000
HKEY_CURRENT_USER\Software\Cygwin
HKEY_CURRENT_USER\Software\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Cygwin\setup
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\Programs\Cygwin
  (default) = (unsupported type)
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
  (default) = '/cygdrive'
  cygdrive flags = 0x00000020
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
  (default) = 'C:\cygwin'
  flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
  (default) = 'C:\cygwin/bin'
  flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
  (default) = 'C:\cygwin/lib'
  flags = 0x00000008
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\00
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\01
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\02
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\03
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\04
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\05
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\06
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\07
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\08
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\09
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0D
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0E
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\0F
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\10
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\11
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\12
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\13
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\14
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\15
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\16
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\17
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\18
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\19
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1A
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1B
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1C
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\CYGWIN.DLL setup\b15.0\mounts\1D
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\Installations
  (default) = '\??\C:\cygwin'
  dcb128a9c32912c6 = '\??\C:\utils\cygwin'
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygwin\setup
  (default) = 'C:\cygwin'

obcaseinsensitive set to 1

Cygwin installations found in the registry:
  System: Key: c5e39b7a9d22bafb Path: C:\cygwin
  System: Key: dcb128a9c32912c6 Path: C:\utils\cygwin

b:  net NTFS   1997535Mb  71% CP CS UN PA        EngBuildsD
c:  hd  NTFS    476929Mb  68% CP CS UN PA FC     Local Disk
d:  cd             N/A    N/A                    
h:  net FAT        500Mb   8% CP CS UN           CIFS.HOMEDIR
t:  net NTFS    152625Mb  92% CP CS UN PA FC     TLOGAN-XP
x:  hd  NTFS    476929Mb  68% CP CS UN PA FC     Local Disk
y:  net NTFS    953838Mb  12% CP CS    PA        workspace
z:  net NTFS   1997535Mb  71% CP CS UN PA        EngBuildsD

C:\cygwin        /          system  binary,auto
C:\cygwin\bin    /usr/bin   system  binary,auto
C:\cygwin\lib    /usr/lib   system  binary,auto
cygdrive prefix  /cygdrive  user    text,posix=0,auto


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