Date: Tue, 03 Jun 2003 10:07:37 -0300 From: "Daniel C. Sobral" <dcs@tcoip.com.br> To: threads@freebsd.org Subject: [Fwd: libc_r, libthr & konsole news] Message-ID: <3EDC9D99.2020102@tcoip.com.br>
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I'm at loss at how dup2() works, exactly. It seems that libc_r overrides
it, but libthr doesn't. But I don't understand the process well, because
I'm don't understand the syscall glue.
-------- Original Message --------
Subject: libc_r, libthr & konsole news
Date: Tue, 03 Jun 2003 09:47:43 -0300
From: Daniel C. Sobral <dcs@tcoip.com.br>
To: CURRENT <freebsd-current@freebsd.org>
Alas, I found *what* is going on differently depending on the library used.
With libc_r, dup2() gets called and fails, preventing execution of
konsole_grantpty, with libthr things work, konsole_grantpty gets called
and... ttyname fails. :-)
Now, dup2() implementation seems to differ between libc_r and libthr
(though I'm open to be shown that is not so -- I don't quite understand
how things work here).
I have verified that by preventing execution of
/usr/local/bin/konsole_grantpty (by the simple artifice of renaming it),
the problem DOES NOT HAPPEN.
Now... to find out what's different between both dup2() implementations...
--
Daniel C. Sobral (8-DCS)
Gerencia de Operacoes
Divisao de Comunicacao de Dados
Coordenacao de Seguranca
VIVO Centro Oeste Norte
Fones: 55-61-313-7654/Cel: 55-61-9618-0904
E-mail: Daniel.Capo@tco.net.br
Daniel.Sobral@tcoip.com.br
dcs@tcoip.com.br
Outros:
dcs@newsguy.com
dcs@freebsd.org
capo@notorious.bsdconspiracy.net
"I think sex is better than logic, but I can't prove it."
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--
Daniel C. Sobral (8-DCS)
Gerencia de Operacoes
Divisao de Comunicacao de Dados
Coordenacao de Seguranca
VIVO Centro Oeste Norte
Fones: 55-61-313-7654/Cel: 55-61-9618-0904
E-mail: Daniel.Capo@tco.net.br
Daniel.Sobral@tcoip.com.br
dcs@tcoip.com.br
Outros:
dcs@newsguy.com
dcs@freebsd.org
capo@notorious.bsdconspiracy.net
Hate the sin and love the sinner.
-- Mahatma Gandhi
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