7b0a4c23a4
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133 lines
4.2 KiB
C
133 lines
4.2 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 1.13 1996/04/23 01:29:10 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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#define CD_UNMOUNTED 0
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#define CD_ALREADY_MOUNTED 1
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#define CD_WE_MOUNTED_IT 2
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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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if (cdromMounted != CD_UNMOUNTED)
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return TRUE;
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if (Mkdir("/cdrom", NULL))
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return FALSE;
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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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/* If this cdrom's not already mounted or can't be mounted, yell */
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if (!directory_exists("/cdrom/dists")) {
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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
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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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msgDebug("Mounted CDROM device %s on /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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