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Date: Sat, 01 Apr 2006 21:33:40 -0800
From: "Jin Guojun [VFFS]" <j_guojun@lbl.gov>
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To: Carlos Silva <security@yourdot-mail.com>
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Cc: freebsd-hardware@freebsd.org
Subject: Re: cups
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Carlos Silva wrote:

>
>> my logs from the error are:
>> ..... (skipped)
>>  '-dQUIET' '-dNOPAUSE' '-sDEVICE=ijs' '-sIjsServer=hpijs' 
>> '-sDeviceManufacturer=HEWLETT-PACKARD' '-sDeviceModel=PHOTOSMART 
>> 1115' '-dDEVICEWIDTHPOINTS=595' '-dDEVICEHEIGHTPOINTS=842' 
>> '-dDuplex=false' '-r300' 
>> '-sIjsParams=Quality:Quality=0,Quality:ColorMode=2,Quality:MediaType=0,Quality:PenSet=2,PS:MediaPosition=7' 
>> '-dIjsUseOutputFD' '-sOutputFile=/dev/fd/3' '/dev/fd/0' 3>&1 1>&2
>
>> D [25/Mar/2006:23:37:55 +0000] [Job 7] **** Unable to open the 
>> initial device, quitting.
>> D [25/Mar/2006:23:37:55 +0000] [Job 7] renderer return value: 1
>> D [25/Mar/2006:23:37:55 +0000] [Job 7] renderer received signal: 1
>> D [25/Mar/2006:23:37:55 +0000] [Job 7] tail process done writing data 
>> to STDOUT
>
By looking closely, somewhere in filter configuration (mime.convs?) is 
messed up.

clause        '-sOutputFile=/dev/fd/3' '/dev/fd/0' 3>&1 1>&2

means:    to read data from stdin and send result to stderr (not stdout, 
weird);
then, redirection says to redirect 3 (stderr) to 1 (stdin, even weird), 
this loops;
and then redirect 1 (stdin) to 2 (stdout), thus input (stdin , 1) is 
empty because
it is redirected to stdout (2) and all input are directly sent to stdout 
(bypass the filter ???).

    -Jin