157 lines
5.6 KiB
C
157 lines
5.6 KiB
C
/*
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* The new sysinstall program.
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*
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* This is probably the last attempt in the `sysinstall' line, the next
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* generation being slated to essentially a complete rewrite.
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*
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* $Id: cdrom.c,v 1.20 1996/07/13 05:48:44 jkh Exp $
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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* Copyright (c) 1995
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* Gary J Palmer. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* verbatim and that no modifications are made prior to this
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* point in the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/* These routines deal with getting things off of CDROM media */
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#include "sysinstall.h"
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#include <sys/stat.h>
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#include <sys/errno.h>
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#include <sys/param.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <grp.h>
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#include <fcntl.h>
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#define CD9660
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#include <sys/mount.h>
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#undef CD9660
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/*
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* This isn't static, like the others, since it's often useful to know whether
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* or not we have a CDROM available in some of the other installation screens.
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* This also isn't a boolean like the others since we have 3 states for it:
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* 0 = cdrom isn't mounted, 1 = cdrom is mounted and we mounted it, 2 = cdrom
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* was already mounted when we came in and we should leave it that way when
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* we leave.
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*/
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int cdromMounted;
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Boolean
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mediaInitCDROM(Device *dev)
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{
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struct iso_args args;
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Attribs *cd_attr;
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char *cp;
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Boolean dontRead;
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if (cdromMounted != CD_UNMOUNTED)
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return TRUE;
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bzero(&args, sizeof(args));
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args.fspec = dev->devname;
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args.flags = 0;
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cd_attr = alloca(sizeof(Attribs) * MAX_ATTRIBS);
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cp = NULL;
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dontRead = FALSE;
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/* If this cdrom's not already mounted or can't be mounted, yell */
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if (!file_readable("/cdrom/cdrom.inf")) {
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Mkdir("/cdrom");
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if (mount(MOUNT_CD9660, "/cdrom", MNT_RDONLY, (caddr_t) &args) == -1) {
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msgConfirm("Error mounting %s on /cdrom: %s (%u)", dev->devname, strerror(errno), errno);
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return FALSE;
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}
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else if (!file_readable("/cdrom/cdrom.inf")) {
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if (msgYesNo("Warning: The CD currently in the drive is either not a FreeBSD\n"
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"CD or it is an older (pre 2.1.5) FreeBSD CD which does not\n"
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"have a version number on it. Do you wish to use this CD anyway?")) {
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unmount("/cdrom", MNT_FORCE);
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return FALSE;
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}
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dontRead = TRUE;
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}
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cdromMounted = CD_WE_MOUNTED_IT;
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}
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else
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cdromMounted = CD_ALREADY_MOUNTED;
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if (!dontRead && (DITEM_STATUS(attr_parse_file(cd_attr, "/cdrom/cdrom.inf")) == DITEM_FAILURE ||
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!(cp = attr_match(cd_attr, "CD_VERSION")) || strcmp(cp, variable_get(VAR_RELNAME)))) {
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unmount("/cdrom", MNT_FORCE);
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if (!cp)
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msgConfirm("Unable to find a /cdrom/cdrom.inf file.\n"
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"Either this is not a FreeBSD CDROM, there is a problem with\n"
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"the CDROM driver or something is wrong with your hardware.\n"
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"Please fix this problem (check the console logs on VTY2) and\n"
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"try again.");
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else
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msgConfirm("Warning: The version of the FreeBSD CD currently in the drive (%s)\n"
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"does not match the version of this boot floppy (%s).\n"
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"If this is intentional, then please visit the Options editor\n"
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"to set the boot floppy version string to match that of the CD\n"
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"before selecting it as an installation media to avoid this warning", cp, variable_get(VAR_RELNAME));
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}
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msgDebug("Mounted FreeBSD CDROM on device %s as /cdrom\n", dev->devname);
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return TRUE;
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}
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int
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mediaGetCDROM(Device *dev, char *file, Boolean probe)
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{
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char buf[PATH_MAX];
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msgDebug("Request for %s from CDROM\n", file);
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snprintf(buf, PATH_MAX, "/cdrom/%s", file);
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if (file_readable(buf))
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return open(buf, O_RDONLY);
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snprintf(buf, PATH_MAX, "/cdrom/dists/%s", file);
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if (file_readable(buf))
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return open(buf, O_RDONLY);
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snprintf(buf, PATH_MAX, "/cdrom/%s/%s", variable_get(VAR_RELNAME), file);
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if (file_readable(buf))
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return open(buf, O_RDONLY);
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snprintf(buf, PATH_MAX, "/cdrom/%s/dists/%s", variable_get(VAR_RELNAME), file);
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return open(buf, O_RDONLY);
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}
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void
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mediaShutdownCDROM(Device *dev)
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{
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/* Only undo it if we did it */
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if (cdromMounted != CD_WE_MOUNTED_IT)
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return;
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msgDebug("Unmounting %s from /cdrom\n", dev->devname);
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if (unmount("/cdrom", MNT_FORCE) != 0) {
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msgConfirm("Could not unmount the CDROM from /cdrom: %s", strerror(errno));
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cdromMounted = CD_ALREADY_MOUNTED; /* Guess somebody else got it */
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}
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else {
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msgDebug("Unmount successful\n");
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cdromMounted = CD_UNMOUNTED;
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}
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}
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