freebsd-dev/release/sysinstall/dos.c
Jordan K. Hubbard 0fd6d431cf Do a few things I've been threatening to do for a long time:
1. Don't use the MSDOSFS code for accessing FreeBSD distribution data.
   Use Robert Nordier's stand-alone DOS I/O library for the purpose.
   It this works as well as Robert says it does, it should drastically reduce
   (or even eliminate) our "I can't install from my DOS partition!" calls.

2. As a result of the above, go to stdio file descriptors for all
   media types.

3. Taking advantage of #2, start using libftpio for FTP transfers instead
   of maintaining our own parallel version of the FTP transfer code.
   Yay!  I ripped something out for a change!

#1 Submitted-By: Robert Nordier <rnordier@iafrica.com>
1996-12-11 09:35:06 +00:00

108 lines
3.3 KiB
C

/*
* The new sysinstall program.
*
* This is probably the last attempt in the `sysinstall' line, the next
* generation being slated to essentially a complete rewrite.
*
* $Id: dos.c,v 1.14 1996/08/23 07:55:58 jkh Exp $
*
* Copyright (c) 1995
* Jordan Hubbard. All rights reserved.
* Copyright (c) 1995
* Gary J Palmer. 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,
* verbatim and that no modifications are made prior to this
* point in the file.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``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 JORDAN HUBBARD OR HIS PETS 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, LIFE 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 "sysinstall.h"
#include <sys/stat.h>
#include <sys/errno.h>
#include <sys/param.h>
#include <sys/wait.h>
#include <unistd.h>
#include <fcntl.h>
#include <grp.h>
#include "dosio.h"
static DOS_FS DOSFS;
static Boolean DOSMounted;
Boolean
mediaInitDOS(Device *dev)
{
if (!RunningAsInit || DOSMounted)
return TRUE;
if (dos_mount(&DOSFS, dev->devname)) {
msgConfirm("Error mounting DOS partition %s : %s (%u)", dev->devname, strerror(errno), errno);
return FALSE;
}
DOSMounted = TRUE;
if (isDebug())
msgDebug("DOS partition %s mounted\n", dev->devname);
return TRUE;
}
FILE *
mediaGetDOS(Device *dev, char *file, Boolean probe)
{
char buf[PATH_MAX];
FILE *fp;
if (!DOSMounted) {
msgDebug("Can't get DOS file %s - DOSFS currently unmounted!\n", file);
return NULL;
}
if (isDebug())
msgDebug("Request for %s from DOS\n", file);
snprintf(buf, PATH_MAX, "/freebsd/%s", file);
if ((fp = dos_open(&DOSFS, buf)))
return fp;
snprintf(buf, PATH_MAX, "/freebsd/dists/%s", file);
if ((fp = dos_open(&DOSFS, buf)))
return fp;
snprintf(buf, PATH_MAX, "/%s", file);
if ((fp = dos_open(&DOSFS, buf)))
return fp;
snprintf(buf, PATH_MAX, "/dists/%s", file);
if ((fp = dos_open(&DOSFS, buf)))
return fp;
return NULL;
}
void
mediaShutdownDOS(Device *dev)
{
if (!RunningAsInit || !DOSMounted)
return;
if (dos_unmount(&DOSFS))
msgConfirm("Could not unmount DOS partition %s : %s", dev->devname, strerror(errno));
else if (isDebug())
msgDebug("Unmount of DOS partition on %s successful\n", dev->devname);
DOSMounted = FALSE;
return;
}