Re: Weird bug with cp -f

["Dave Miles" <stack at freenet dot co dot uk>]

"Christopher Faylor" <cgf-no-personal-reply-please@cygwin.com> wrote in message 20041005000738.GA6013@trixie.casa.cgf.cx">news:20041005000738.GA6013@trixie.casa.cgf.cx...
> On Tue, Oct 05, 2004 at 12:10:34AM +0100, Dave Miles wrote:
> >Christopher Faylor wrote:
> >>On Sun, Oct 03, 2004 at 12:03:42AM -0400, Christopher Faylor wrote:
> >>>Works just fine for me.
> >>>
> >>>(WJJFM?)
> >>
> >>Try again: WJFFM.
> >
> >But has not worked for me for some time on Win2K.
>
> It works fine for me on Win2K SP4 on FAT, FAT32, and NTFS partitions.
>
> Maybe your disk is screwed up.  If not, maybe you have something set
> on your disk that the majority of users don't.  Do you have compression
> or encryption turned on?
>

System information:

  OS Name Microsoft Windows 2000 Professional
  Version 5.0.2195 Service Pack 4 Build 2195
  OS Manufacturer   Microsoft Corporation

Two seperate disks with primary (c:, g:, j:) and extended partitions
(d:, k:, l:) on each.

All partitions formatted under NTFS without compression or
encryption enabled.

Windows disk management reports all healthy.

Now the fun bit begins...

1). created file in 'c:/temp' and attempt to 'cp' it ('cp' works fine)

  Administrator@stack01 /cygdrive/c
  $ cd temp

  Administrator@stack01 /cygdrive/c/temp
  $ ls -l cyg*
  -rw-r--r--    1 Administ None        60747 Oct  5 11:11 cyg.out
  -rw-r--r--    1 Administ None        60747 Oct  5 11:34 cyg.out.0

  Administrator@stack01 /cygdrive/c/temp
  $ rm cyg.out.0

  Administrator@stack01 /cygdrive/c/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/c/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/c/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/c/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/c/temp
  $ ls -l
  total 120
  -rw-r--r--    1 Administ None        60747 Oct  5 11:11 cyg.out
  -rw-r--r--    1 Administ None        60747 Oct  5 11:37 cyg.out.0
  drwxrwxrwt+   2 Administ None            0 Jul 12 12:10 installtemped


2). now re-attempt in 'c:/' ('cp' magically produces a directory)

  Administrator@stack01 /cygdrive/c/temp
  $ cd ..

  Administrator@stack01 /cygdrive/c
  $ cp cyg.out cyg.out.0
  cp: cannot stat `cyg.out': No such file or directory

  Administrator@stack01 /cygdrive/c
  $ cp temp/cyg.out .

  Administrator@stack01 /cygdrive/c
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/c
  $ cp cyg.out cyg.out.0
  cp: writing `cyg.out.0': Invalid request code

  Administrator@stack01 /cygdrive/c
  $ ls -l cyg*
  -rw-r--r--    1 Administ None        60747 Oct  5 11:36 cyg.out

  cyg.out.0:
  total 0



Problem is I first experienced this 'cp' behaviour within a build
that was copying to a directory path. Therefore I don't think that
using 'cp' within a non-root directory is the solution.

Also 'cp' from (say) c: to d: and attempting the above also gives rise
to a directory.

Since I had some spare disk space I created a FAT32 (m:) and FAT (n:)
drive and repeated (result is everything works as expected):


  Administrator@stack01 /cygdrive/c/temp
  $ cd m:

  Administrator@stack01 /cygdrive/m
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 11:31 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 11:37 cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ rm cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 11:31 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 11:37 cyg.out.0

  Administrator@stack01 /cygdrive/m
  $ mkdir temp

  Administrator@stack01 /cygdrive/m
  $ cp cyg.out temp

  Administrator@stack01 /cygdrive/m
  $ cd temp

  Administrator@stack01 /cygdrive/m/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/m/temp
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 11:53 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 11:53 cyg.out.0

  Administrator@stack01 /cygdrive/m/temp
  $ cd n:

  Administrator@stack01 /cygdrive/n
  $ cp m:/cyg.out .

  Administrator@stack01 /cygdrive/n
  $ cp m:/cyg.out .

  Administrator@stack01 /cygdrive/n
  $ cp m:/cyg.out .

  Administrator@stack01 /cygdrive/n
  $ cp m:/cyg.out .

  Administrator@stack01 /cygdrive/n
  $ ls -l
  total 38
  -rw-r--r--    1 Administ None        37971 Oct  5 11:53 cyg.out

  Administrator@stack01 /cygdrive/n
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/n
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/n
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/n
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 11:53 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5  2004 cyg.out.0

  Administrator@stack01 /cygdrive/n
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 11:53 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 11:53 cyg.out.0

  Administrator@stack01 /cygdrive/n
  $ mkdir temp

  Administrator@stack01 /cygdrive/n
  $ cp cyg.out temp

  Administrator@stack01 /cygdrive/n
  $ cd temp

  Administrator@stack01 /cygdrive/n/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/n/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/n/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/n/temp
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 11:53 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5  2004 cyg.out.0


Finally think 'OK! So try it on a newly created NTFS partition'
(drive o:)...


  Administrator@stack01 ~
  $ cd o:

  Administrator@stack01 /cygdrive/o
  $ cp m:/cyg.out .

  Administrator@stack01 /cygdrive/o
  $ ls -l
  total 38
  -rw-r--r--    1 Administ None        37971 Oct  5 12:05 cyg.out

  Administrator@stack01 /cygdrive/o
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 12:05 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 12:05 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 12:05 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 12:05 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 12:05 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out.0

  Administrator@stack01 /cygdrive/o
  $ mkdir temp

  Administrator@stack01 /cygdrive/o
  $ cd temp

  Administrator@stack01 /cygdrive/o/temp
  $ cp ../cyg.out .

  Administrator@stack01 /cygdrive/o/temp
  $ cp cyg.out cyg.out.0

  Administrator@stack01 /cygdrive/o/temp
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out.0

  Administrator@stack01 /cygdrive/o/temp
  $ cp ../cyg.out .

  Administrator@stack01 /cygdrive/o/temp
  $ ls -l
  total 76
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out
  -rw-r--r--    1 Administ None        37971 Oct  5 12:06 cyg.out.0

Success.



Interestingly creating a file via 'touch' and copying it seems to work:

  Administrator@stack01 /cygdrive/o/temp
  $ cd c:

  Administrator@stack01 /cygdrive/c
  $ touch b

  Administrator@stack01 /cygdrive/c
  $ cp b b.b

  Administrator@stack01 /cygdrive/c
  $ ls -l b*
  -rw-r--r--    1 Administ None            0 Oct  5 12:11 b
  -rw-r--r--    1 Administ None            0 Oct  5 12:11 b.b

  Administrator@stack01 /cygdrive/c
  $ cp b b.b

  Administrator@stack01 /cygdrive/c
  $ ls -l b*
  -rw-r--r--    1 Administ None            0 Oct  5 12:11 b
  -rw-r--r--    1 Administ None            0 Oct  5 12:11 b.b


I'd like to understand what exctly is causeing this so any suggestions
etc... I'm willing to try.

Regards,

Dave Miles







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