freebsd-dev/usr.sbin/sysinstall/floppy.c
Jordan K. Hubbard 8d8f2bab5a Collapse the "get" code substantially by combining common functions.
Also make mountpoint for each media type easier to change.
Also reshuffled some menus for easier usage.
1998-12-22 12:31:26 +00:00

151 lines
4.4 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: floppy.c,v 1.30 1998/10/12 23:45:06 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.
*
*/
/* These routines deal with getting things off of floppy media */
#include "sysinstall.h"
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/errno.h>
#include <sys/param.h>
#include <sys/wait.h>
#include <unistd.h>
#include <grp.h>
#define MSDOSFS
#include <sys/mount.h>
#include <msdosfs/msdosfsmount.h>
#undef MSDOSFS
#include <ufs/ufs/ufsmount.h>
static Boolean floppyMounted;
char *distWanted;
static char mountpoint[] = "/dist";
Boolean
mediaInitFloppy(Device *dev)
{
struct msdosfs_args dosargs;
struct ufs_args u_args;
if (floppyMounted)
return TRUE;
if (Mkdir(mountpoint)) {
msgConfirm("Unable to make %s directory mountpoint for %s!", mountpoint, dev->devname);
return FALSE;
}
msgDebug("Init floppy called for %s distribution.\n", distWanted ? distWanted : "some");
if (!variable_get(VAR_NONINTERACTIVE)) {
if (!distWanted)
msgConfirm("Please insert floppy in %s", dev->description);
else
msgConfirm("Please insert floppy containing %s in %s",
distWanted, dev->description);
}
memset(&dosargs, 0, sizeof dosargs);
dosargs.fspec = dev->devname;
dosargs.uid = dosargs.gid = 0;
dosargs.mask = 0777;
memset(&u_args, 0, sizeof(u_args));
u_args.fspec = dev->devname;
if (mount("msdos", mountpoint, MNT_RDONLY, (caddr_t)&dosargs) == -1) {
if (mount("ufs", mountpoint, MNT_RDONLY, (caddr_t)&u_args) == -1) {
msgConfirm("Error mounting floppy %s (%s) on %s : %s",
dev->name, dev->devname, mountpoint, strerror(errno));
return FALSE;
}
}
floppyMounted = TRUE;
distWanted = NULL;
return TRUE;
}
FILE *
mediaGetFloppy(Device *dev, char *file, Boolean probe)
{
char buf[PATH_MAX];
FILE *fp;
int nretries = 5;
/*
* floppies don't use mediaGenericGet() because it's too expensive
* to speculatively open files on a floppy disk. Make user get it
* right or give up with floppies.
*/
snprintf(buf, PATH_MAX, "%s/%s", mountpoint, file);
if (!file_readable(buf)) {
if (probe)
return NULL;
else {
while (!file_readable(buf)) {
if (!--nretries) {
msgConfirm("GetFloppy: Failed to get %s after retries;\ngiving up.", buf);
return NULL;
}
distWanted = buf;
mediaShutdownFloppy(dev);
if (!mediaInitFloppy(dev))
return NULL;
}
}
}
fp = fopen(buf, "r");
return fp;
}
void
mediaShutdownFloppy(Device *dev)
{
if (floppyMounted) {
if (unmount(mountpoint, MNT_FORCE) != 0)
msgDebug("Umount of floppy on %s failed: %s (%d)\n", mountpoint, strerror(errno), errno);
else {
floppyMounted = FALSE;
if (!variable_get(VAR_NONINTERACTIVE))
msgConfirm("You may remove the floppy from %s", dev->description);
}
}
}