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Posted to modperl@perl.apache.org by Rashmi Badan <ra...@gmail.com> on 2008/11/19 15:14:30 UTC
Failed to dup STDIN: Bad file descriptor.
Hi,
I load mod_perl into a customized Apache on Windows but when I send a
simple request (http://host:port/perl/testperl.pl - testperl.pl just
prints a simple message) Apache dies and throws the following message
in the error log
Failed to dup STDIN: Bad file descriptor.
I see that this is coming from modperl_io_perlio_override_stdin() in
modperl_io.c but do not know why. If I try loading the same module
into plain Apache I don't seem to hit this problem and am able to
access the script just fine. I would appreciate it if someone could
give me some pointers to debug this issue.
Versions used :
Apache 2.2.9
mod_perl 2.0.4
perl 5.10
mod_perl.conf.
-------------------------------------------------------------
LoadFile ${PERL_PATH}/bin/perl510.dll
LoadModule perl_module modules/mod_perl.so
#
# Setup mod_perl to handle perl cgi scripts from the cgi-bin directory
#
<IfModule mod_alias.c>
<IfModule mod_perl.c>
Alias /perl/ "${APACHE_HOME}/cgi-bin/"
PerlModule ModPerl::Registry
PerlSwitches -I${APACHE_HOME}/mod_perl/lib
<Location /perl/>
SetHandler perl-script
AddHandler perl-script .pl
PerlResponseHandler ModPerl::Registry
PerlOptions +ParseHeaders
Options +ExecCGI
</Location>
</IfModule>
</IfModule>
-------------------------------------------------------------
Thanks,
Rashmi
Re: Failed to dup STDIN: Bad file descriptor.
Posted by Rashmi Badan <ra...@gmail.com>.
Yes, Apache closes the STDIN on startup.
Thanks for the code snippet, but this does not address my problem. I
am not looking at fixing the perl script as I don't think the problem
lies there. The problem perhaps lies in my customized Apache - I'm not
sure about it.
Rgds,
Rashmi
On Wed, Nov 19, 2008 at 9:58 PM, Shibi NS <sh...@gmail.com> wrote:
> I believe fd 0 and/or fd 1 are closed in Apache 2 which might be causing the
> issue.
>
> I had the similar kid of issue - i used following code to fix it
>
> $fileno = fileno(STDIN);
>
> if ( defined($fileno) and $fileno != 0)
> {
> $stdin = IO::Handle->new();
> $stdin->fdopen(0, "w") ||
> die "Unable to open STDIN using fd 0: $!\n";
> }
> else
> {
> $stdin = \*STDIN;
> }
>
>
> On Wed, Nov 19, 2008 at 7:44 PM, Rashmi Badan <ra...@gmail.com>
> wrote:
>>
>> Hi,
>>
>> I load mod_perl into a customized Apache on Windows but when I send a
>> simple request (http://host:port/perl/testperl.pl - testperl.pl just
>> prints a simple message) Apache dies and throws the following message
>> in the error log
>>
>> Failed to dup STDIN: Bad file descriptor.
>>
>> I see that this is coming from modperl_io_perlio_override_stdin() in
>> modperl_io.c but do not know why. If I try loading the same module
>> into plain Apache I don't seem to hit this problem and am able to
>> access the script just fine. I would appreciate it if someone could
>> give me some pointers to debug this issue.
>>
>> Versions used :
>> Apache 2.2.9
>> mod_perl 2.0.4
>> perl 5.10
>>
>> mod_perl.conf.
>> -------------------------------------------------------------
>> LoadFile ${PERL_PATH}/bin/perl510.dll
>> LoadModule perl_module modules/mod_perl.so
>>
>> #
>> # Setup mod_perl to handle perl cgi scripts from the cgi-bin directory
>> #
>> <IfModule mod_alias.c>
>> <IfModule mod_perl.c>
>> Alias /perl/ "${APACHE_HOME}/cgi-bin/"
>> PerlModule ModPerl::Registry
>> PerlSwitches -I${APACHE_HOME}/mod_perl/lib
>>
>> <Location /perl/>
>> SetHandler perl-script
>> AddHandler perl-script .pl
>> PerlResponseHandler ModPerl::Registry
>> PerlOptions +ParseHeaders
>> Options +ExecCGI
>> </Location>
>> </IfModule>
>> </IfModule>
>> -------------------------------------------------------------
>>
>> Thanks,
>> Rashmi
>
>
>
> --
> --Shibi Ns--
>
Re: Failed to dup STDIN: Bad file descriptor.
Posted by Shibi NS <sh...@gmail.com>.
sorry i meant mod_perl not Apache
On Wed, Nov 19, 2008 at 9:58 PM, Shibi NS <sh...@gmail.com> wrote:
> I believe fd 0 and/or fd 1 are closed in Apache 2 which might be causing
> the issue.
>
> I had the similar kid of issue - i used following code to fix it
>
> $fileno = fileno(STDIN);
>
> if ( defined($fileno) and $fileno != 0)
> {
> $stdin = IO::Handle->new();
> $stdin->fdopen(0, "w") ||
> die "Unable to open STDIN using fd 0: $!\n";
> }
> else
> {
> $stdin = \*STDIN;
> }
>
>
> On Wed, Nov 19, 2008 at 7:44 PM, Rashmi Badan <ra...@gmail.com>wrote:
>
>> Hi,
>>
>> I load mod_perl into a customized Apache on Windows but when I send a
>> simple request (http://host:port/perl/testperl.pl - testperl.pl just
>> prints a simple message) Apache dies and throws the following message
>> in the error log
>>
>> Failed to dup STDIN: Bad file descriptor.
>>
>> I see that this is coming from modperl_io_perlio_override_stdin() in
>> modperl_io.c but do not know why. If I try loading the same module
>> into plain Apache I don't seem to hit this problem and am able to
>> access the script just fine. I would appreciate it if someone could
>> give me some pointers to debug this issue.
>>
>> Versions used :
>> Apache 2.2.9
>> mod_perl 2.0.4
>> perl 5.10
>>
>> mod_perl.conf.
>> -------------------------------------------------------------
>> LoadFile ${PERL_PATH}/bin/perl510.dll
>> LoadModule perl_module modules/mod_perl.so
>>
>> #
>> # Setup mod_perl to handle perl cgi scripts from the cgi-bin directory
>> #
>> <IfModule mod_alias.c>
>> <IfModule mod_perl.c>
>> Alias /perl/ "${APACHE_HOME}/cgi-bin/"
>> PerlModule ModPerl::Registry
>> PerlSwitches -I${APACHE_HOME}/mod_perl/lib
>>
>> <Location /perl/>
>> SetHandler perl-script
>> AddHandler perl-script .pl
>> PerlResponseHandler ModPerl::Registry
>> PerlOptions +ParseHeaders
>> Options +ExecCGI
>> </Location>
>> </IfModule>
>> </IfModule>
>> -------------------------------------------------------------
>>
>> Thanks,
>> Rashmi
>>
>
>
>
> --
> --Shibi Ns--
>
--
--Shibi Ns--
Re: Failed to dup STDIN: Bad file descriptor.
Posted by Shibi NS <sh...@gmail.com>.
I believe fd 0 and/or fd 1 are closed in Apache 2 which might be causing the
issue.
I had the similar kid of issue - i used following code to fix it
$fileno = fileno(STDIN);
if ( defined($fileno) and $fileno != 0)
{
$stdin = IO::Handle->new();
$stdin->fdopen(0, "w") ||
die "Unable to open STDIN using fd 0: $!\n";
}
else
{
$stdin = \*STDIN;
}
On Wed, Nov 19, 2008 at 7:44 PM, Rashmi Badan <ra...@gmail.com>wrote:
> Hi,
>
> I load mod_perl into a customized Apache on Windows but when I send a
> simple request (http://host:port/perl/testperl.pl - testperl.pl just
> prints a simple message) Apache dies and throws the following message
> in the error log
>
> Failed to dup STDIN: Bad file descriptor.
>
> I see that this is coming from modperl_io_perlio_override_stdin() in
> modperl_io.c but do not know why. If I try loading the same module
> into plain Apache I don't seem to hit this problem and am able to
> access the script just fine. I would appreciate it if someone could
> give me some pointers to debug this issue.
>
> Versions used :
> Apache 2.2.9
> mod_perl 2.0.4
> perl 5.10
>
> mod_perl.conf.
> -------------------------------------------------------------
> LoadFile ${PERL_PATH}/bin/perl510.dll
> LoadModule perl_module modules/mod_perl.so
>
> #
> # Setup mod_perl to handle perl cgi scripts from the cgi-bin directory
> #
> <IfModule mod_alias.c>
> <IfModule mod_perl.c>
> Alias /perl/ "${APACHE_HOME}/cgi-bin/"
> PerlModule ModPerl::Registry
> PerlSwitches -I${APACHE_HOME}/mod_perl/lib
>
> <Location /perl/>
> SetHandler perl-script
> AddHandler perl-script .pl
> PerlResponseHandler ModPerl::Registry
> PerlOptions +ParseHeaders
> Options +ExecCGI
> </Location>
> </IfModule>
> </IfModule>
> -------------------------------------------------------------
>
> Thanks,
> Rashmi
>
--
--Shibi Ns--