Date: 09 May 2002 00:18:41 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: Peter Wemm <peter@wemm.org> Cc: Robert Watson <rwatson@FreeBSD.ORG>, Mark Murray <mark@grondar.za>, current@FreeBSD.ORG Subject: Re: The future of perl on FreeBSD Message-ID: <xzpsn52nv0e.fsf@flood.ping.uio.no> In-Reply-To: <20020508075543.A5E5838CC@overcee.wemm.org> References: <20020508075543.A5E5838CC@overcee.wemm.org>
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Peter Wemm <peter@wemm.org> writes:
> We have several choices.. From installing a symlink pointing to wherever
> the default perl package is, through to a simple redirector that searches
> $PATH and/or looks in a few well-known locations.
As previously posted...
DES
--
Dag-Erling Smorgrav - des@ofug.org
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Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: attachment; filename=perl.c
Content-Transfer-Encoding: quoted-printable
/*-
* Copyright (c) 2002 Dag-Erling Co=EFdan Sm=F8rgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
extern char **environ;
int
main(int argc __unused, char *argv[])
{
char path[PATH_MAX];
const char *p, *q, *self;
size_t len;
self =3D argv[0];
argv[0] =3D path;
for (p =3D q =3D getenv("PATH"); p && *p && *q; p =3D q + 1) {
for (q =3D p; *q && *q !=3D ':'; ++q)
/* nothing */ ;
len =3D snprintf(path, sizeof path, "%.*s/perl", (int)(q - p), p);
if (len >=3D PATH_MAX || strcmp(path, self) =3D=3D 0)
continue;
execve(path, argv, environ);
if (errno !=3D ENOENT)
err(1, "%s", path);
}
errx(1, "Perl is not installed, try 'pkg_add -r perl'");
}
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