Re: perl -r says readable dir is unreadable
2009/4/26 Mikel Ward:
> Sorry.
>
> Found this
> http://sourceware.org/ml/cygwin/2005-03/msg00488.html
>
> Apparently it's been an issue since at least Perl 5.8.6 in 2005, but
> probably longer.
Oops. I'll to fix that and get it into perl core.
Right now I'm on a business trip in Berlin, so it will need some days.
But it will be in the next perl for cygwin-1.7 (if I can reproduce it).
> On Sun, Apr 26, 2009 at 2:37 PM, Mikel Ward wrote:
>> Hi
>>
>> I'm having problems with a Perl script that works fine on Linux.
>>
>> The key is that the -r (file is readable) operator returns false for
>> directories that I CAN read. "test" and "ls" prove that I can read
>> them.
>>
>> Something that might be related is that C:, C:\Windows, and others are
>> owned by the "TrustedInstaller" user, which mkpasswd can't handle.
>> http://www.nabble.com/group-%3D-(2**32-1)-%3D-4294967295-td20319853.html
>>
>> I use / as my Cygwin prefix rather than /cygdrive, but I've tried
>> /cygdrive and it gives the same results.
>>
>> I'm running as myself, but running as Administrator also gives the same
>> results.
>>
>> I'm running Vista.
>>
>> $ test -r /c/WINDOWS && echo "/c/WINDOWS is readable"
>> /c/WINDOWS is readable
>>
>> $ cat ~/bin/readable
>> #!/usr/bin/perl
>>
>> if (-r $ARGV[0]) {
>> print $ARGV[0] . " is readable\n";
>> exit 0;
>> }
>> else {
>> print $ARGV[0] . " IS NOT readable\n";
>> exit 1;
>> }
>>
>> $ ~/bin/readable /c/WINDOWS
>> /c/WINDOWS IS NOT readable
>>
>> $ cat ~/bin/pstat
>> #!/usr/bin/perl
>>
>> ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks)
>> = stat($ARGV[0]);
>> print "mode = " . $mode . "\n";
>>
>> $ ~/bin/pstat /c/WINDOWS
>> mode = 16888
>>
>> $ ls -l /c/WINDOWS | head
>> ls: /c/WINDOWS/bthservsdp.dat: Permission denied
>> ls: /c/WINDOWS/DUMP4352.tmp: Permission denied
>> ls: /c/WINDOWS/LiveKernelReports: Permission denied
>> ls: /c/WINDOWS/MEMORY.DMP: Permission denied
>> ls: /c/WINDOWS/ModemLogs: Permission denied
>> ls: /c/WINDOWS/Prefetch: Permission denied
>> ls: /c/WINDOWS/Temp: Permission denied
>> total 505455
>> -rwx--+ 1 Administrators None 0 Jan 2 10:58 AS_Debug.txt*
>> drwxrwx---+ 4 4096 Apr 15 07:30 AppPatch/
>> drwxrwx---+ 6 0 Nov 23 13:52 Boot/
>> drwxrwx---+ 4 0 Nov 2 2006 Branding/
>> drwx--+ 2 Administrators 49152 Nov 2 2006 Cursors/
>> -rwx--+ 1 Administrators None 1171 Jan 6 22:34 DIFx.log*
>> -rwx--+ 1 Administrators None 319456 Jan 2 10:59 DIFxAPI.dll*
>> -rwx--+ 1 SYSTEM SYSTEM 17932 Jan 6 23:13 DPINST.LOG*
>> -- 1 212167315 Nov 20 22:51 DUMP4352.tmp
>>
>> $ perl -version
>>
>> This is perl, v5.10.0 built for cygwin-thread-multi-64int
>> (with 6 registered patches, see perl -V for more detail)
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Re: perl -r says readable dir is unreadable
Sorry.
Found this
http://sourceware.org/ml/cygwin/2005-03/msg00488.html
Apparently it's been an issue since at least Perl 5.8.6 in 2005, but
probably longer.
On Sun, Apr 26, 2009 at 2:37 PM, Mikel Ward wrote:
> Hi
>
> I'm having problems with a Perl script that works fine on Linux.
>
> The key is that the -r (file is readable) operator returns false for
> directories that I CAN read. "test" and "ls" prove that I can read
> them.
>
> Something that might be related is that C:, C:\Windows, and others are
> owned by the "TrustedInstaller" user, which mkpasswd can't handle.
> http://www.nabble.com/group-%3D-(2**32-1)-%3D-4294967295-td20319853.html
>
> I use / as my Cygwin prefix rather than /cygdrive, but I've tried
> /cygdrive and it gives the same results.
>
> I'm running as myself, but running as Administrator also gives the same
> results.
>
> I'm running Vista.
>
> $ test -r /c/WINDOWS && echo "/c/WINDOWS is readable"
> /c/WINDOWS is readable
>
> $ cat ~/bin/readable
> #!/usr/bin/perl
>
> if (-r $ARGV[0]) {
> print $ARGV[0] . " is readable\n";
> exit 0;
> }
> else {
> print $ARGV[0] . " IS NOT readable\n";
> exit 1;
> }
>
> $ ~/bin/readable /c/WINDOWS
> /c/WINDOWS IS NOT readable
>
> $ cat ~/bin/pstat
> #!/usr/bin/perl
>
> ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks)
> = stat($ARGV[0]);
> print "mode = " . $mode . "\n";
>
> $ ~/bin/pstat /c/WINDOWS
> mode = 16888
>
> $ ls -l /c/WINDOWS | head
> ls: /c/WINDOWS/bthservsdp.dat: Permission denied
> ls: /c/WINDOWS/DUMP4352.tmp: Permission denied
> ls: /c/WINDOWS/LiveKernelReports: Permission denied
> ls: /c/WINDOWS/MEMORY.DMP: Permission denied
> ls: /c/WINDOWS/ModemLogs: Permission denied
> ls: /c/WINDOWS/Prefetch: Permission denied
> ls: /c/WINDOWS/Temp: Permission denied
> total 505455
> -rwx--+ 1 Administrators None 0 Jan 2 10:58 AS_Debug.txt*
> drwxrwx---+ 4 4096 Apr 15 07:30 AppPatch/
> drwxrwx---+ 6 0 Nov 23 13:52 Boot/
> drwxrwx---+ 4 0 Nov 2 2006 Branding/
> drwx--+ 2 Administrators 49152 Nov 2 2006 Cursors/
> -rwx--+ 1 Administrators None 1171 Jan 6 22:34 DIFx.log*
> -rwx--+ 1 Administrators None 319456 Jan 2 10:59 DIFxAPI.dll*
> -rwx--+ 1 SYSTEM SYSTEM 17932 Jan 6 23:13 DPINST.LOG*
> -- 1 212167315 Nov 20 22:51 DUMP4352.tmp
>
> $ perl -version
>
> This is perl, v5.10.0 built for cygwin-thread-multi-64int
> (with 6 registered patches, see perl -V for more detail)
>
> Copyright 1987-2007, Larry Wall
>
> Perl may be copied only under the terms of either the Artistic License or the
> GNU General Public License, which may be found in the Perl 5 source kit.
>
> Complete documentation for Perl, including FAQ lists, should be found on
> this system using "man perl" or "perldoc perl". If you have access to the
> Internet, point your browser at http://www.perl.org/, the Perl Home Page.
>
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Re: perl -r says readable dir is unreadable
On Sat, April 25, 2009 9:37 pm, Mikel Ward wrote: > The key is that the -r (file is readable) operator returns false for > directories that I CAN read. "test" and "ls" prove that I can read them. -r does not test to see if you can read a file, it tests whether the mode gives you read access to the file. > $ ~/bin/pstat /c/WINDOWS > mode = 16888 (= 040770) And it does not. This may help: use filetest "access"; (see http://search.cpan.org/perldoc/filetest) but the only guaranteed cross-platform way to see if you can read a file is to try to read it. -- 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/
perl -r says readable dir is unreadable
Hi
I'm having problems with a Perl script that works fine on Linux.
The key is that the -r (file is readable) operator returns false for
directories that I CAN read. "test" and "ls" prove that I can read
them.
Something that might be related is that C:, C:\Windows, and others are
owned by the "TrustedInstaller" user, which mkpasswd can't handle.
http://www.nabble.com/group-%3D-(2**32-1)-%3D-4294967295-td20319853.html
I use / as my Cygwin prefix rather than /cygdrive, but I've tried
/cygdrive and it gives the same results.
I'm running as myself, but running as Administrator also gives the same results.
I'm running Vista.
$ test -r /c/WINDOWS && echo "/c/WINDOWS is readable"
/c/WINDOWS is readable
$ cat ~/bin/readable
#!/usr/bin/perl
if (-r $ARGV[0]) {
print $ARGV[0] . " is readable\n";
exit 0;
}
else {
print $ARGV[0] . " IS NOT readable\n";
exit 1;
}
$ ~/bin/readable /c/WINDOWS
/c/WINDOWS IS NOT readable
$ cat ~/bin/pstat
#!/usr/bin/perl
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,$blksize,$blocks)
= stat($ARGV[0]);
print "mode = " . $mode . "\n";
$ ~/bin/pstat /c/WINDOWS
mode = 16888
$ ls -l /c/WINDOWS | head
ls: /c/WINDOWS/bthservsdp.dat: Permission denied
ls: /c/WINDOWS/DUMP4352.tmp: Permission denied
ls: /c/WINDOWS/LiveKernelReports: Permission denied
ls: /c/WINDOWS/MEMORY.DMP: Permission denied
ls: /c/WINDOWS/ModemLogs: Permission denied
ls: /c/WINDOWS/Prefetch: Permission denied
ls: /c/WINDOWS/Temp: Permission denied
total 505455
-rwx--+1 Administrators None 0 Jan 2 10:58 AS_Debug.txt*
drwxrwx---+4 4096 Apr 15 07:30 AppPatch/
drwxrwx---+6 0 Nov 23 13:52 Boot/
drwxrwx---+4 0 Nov 2 2006 Branding/
drwx--+2 Administrators 49152 Nov 2 2006 Cursors/
-rwx--+1 Administrators None 1171 Jan 6 22:34 DIFx.log*
-rwx--+1 Administrators None319456 Jan 2 10:59 DIFxAPI.dll*
-rwx--+1 SYSTEM SYSTEM 17932 Jan 6 23:13 DPINST.LOG*
-- 1 212167315 Nov 20 22:51 DUMP4352.tmp
$ perl -version
This is perl, v5.10.0 built for cygwin-thread-multi-64int
(with 6 registered patches, see perl -V for more detail)
Copyright 1987-2007, Larry Wall
Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.
Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl". If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.
cygcheck.out
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