Date: Sat, 10 May 1997 04:05:13 +0100 From: gjm11@dpmms.cam.ac.uk To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: ports/3572: virtualpaper-1.4 port attempts to call mknod() Message-ID: <E0wQ2TB-0001rj-00@g.pet.cam.ac.uk> Resent-Message-ID: <199705100310.UAA13524@hub.freebsd.org>
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>Number: 3572
>Category: ports
>Synopsis: virtualpaper-1.4 port attempts to call mknod()
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-ports
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri May 9 20:10:00 PDT 1997
>Last-Modified:
>Originator: Gareth McCaughan
>Organization:
all too little
>Release: FreeBSD 2.2-RELEASE i386
>Environment:
Bog-standard FreeBSD 2.2 system
>Description:
The virtualpaper-1.4 port contains the following, in
buildlectern/src/POSIX/OSUtilsPosix.m3 :
IF Unix.mknod(M3toC.TtoS(p), Mode, 0) < 0 THEN
OSErrorPosix.Raise();
END;
Unfortunately, only root is supposed to call mknod(),
so this is not a good idea. Calling mkfifo() instead
(this is in a procedure called CreateFifo) seems to
work.
>How-To-Repeat:
Install virtualpaper-1.4 and type "BuildLectern foo.ps zog.lect".
>Fix:
Declare an <*EXTERNAL*> procedure called mkfifo with the
right type, and call that instead. The following lines of
code do this, but I know just enough Modula-3 to be
certain that they don't belong in the place where, in
search of a quick fix, I put them. :-)
in an interface file somewhere, insert:
FROM Ctypes IMPORT char_star, int;
FROM Utypes IMPORT mode_t;
<*EXTERNAL*> PROCEDURE mkfifo(p: char_star; m: mode_t): int;
in OSUtilsPosix.m3: replace the definition of CreateFifo with:
PROCEDURE CreateFifo(p: TEXT) RAISES {OSError.E} =
CONST Mode = Unix.MROWNER + Unix.MWOWNER;
BEGIN
<* ASSERT pFifo=NIL *>
IF mkfifo(M3toC.TtoS(p), Mode) < 0 THEN
OSErrorPosix.Raise();
END;
pFifo := p;
END CreateFifo;
>Audit-Trail:
>Unformatted:
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