Date: Sun, 4 May 1997 09:47:08 -0600 (MDT) From: Steve Bauer <sbauer@rock.sdsmt.edu> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/3495: error in _thread_fd_table setup in libc_r -- thread_init.c Message-ID: <199705041547.JAA03968@rock.sdsmt.edu> Resent-Message-ID: <199705041550.IAA00452@hub.freebsd.org>
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>Number: 3495
>Category: kern
>Synopsis: _thread_fd_table is not initialized with inherited fd's
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun May 4 08:50:02 PDT 1997
>Last-Modified:
>Originator: Steve Bauer
>Organization:
South Dakota School of Mines and Technology
>Release: FreeBSD 2.2-STABLE i386
>Environment:
The environment is the standard FreeBSD-2.2-Stable with ctm
patch 0263 applied to the system.
>Description:
File desciptors that are inherited from the parent process (ie shell)
are not added to the _thread_fd_table. Thus when they are accessed say using
read the error Bad File Descriptor is returned. This effects programs that
like to read from stdio using read.
>How-To-Repeat:
Read data from stdin using read.
>Fix:
Below is a patch that seems to fix the problem:
*** uthread_init.c.orig Mon Apr 28 22:29:03 1997
--- uthread_init.c Sun May 4 09:36:46 1997
***************
*** 183,188 ****
--- 183,189 ----
for (i = 0; i < _thread_dtablesize; i++) {
/* Initialise the file descriptor table: */
_thread_fd_table[i] = NULL;
+ _thread_fd_table_init(i);
}
}
}
>Audit-Trail:
>Unformatted:
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