229 lines
6.3 KiB
C
229 lines
6.3 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: floppy.c,v 1.6.2.17 1995/06/10 09:14:51 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Jordan Hubbard
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* for the FreeBSD Project.
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* 4. The name of Jordan Hubbard or the FreeBSD project may not be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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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 floppy media */
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#include "sysinstall.h"
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#include <sys/fcntl.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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#define MSDOSFS
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#include <sys/mount.h>
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#undef MSDOSFS
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static Device *floppyDev;
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static Boolean floppyMounted;
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static char *distWanted;
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/* For finding floppies */
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static int
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floppyChoiceHook(char *str)
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{
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Device **devs;
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/* Clip garbage off the ends */
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string_prune(str);
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str = string_skipwhite(str);
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if (!*str)
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return 0;
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devs = deviceFind(str, DEVICE_TYPE_FLOPPY);
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if (devs)
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floppyDev = devs[0];
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return devs ? 1 : 0;
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}
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/* Our last-ditch routine for getting ROOT from a floppy */
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int
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getRootFloppy(void)
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{
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int fd = -1;
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while (floppyDev == NULL || fd == -1) {
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Device **devs;
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int cnt;
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devs = deviceFind(NULL, DEVICE_TYPE_FLOPPY);
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cnt = deviceCount(devs);
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if (!cnt) {
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msgConfirm("No floppy devices found! Something is seriously wrong!");
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return -1;
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}
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else if (cnt == 1) {
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floppyDev = devs[0];
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msgConfirm("Please insert the ROOT floppy in %s and press [ENTER]", floppyDev->description);
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}
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else {
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DMenu *menu;
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menu = deviceCreateMenu(&MenuMediaFloppy, DEVICE_TYPE_FLOPPY, floppyChoiceHook);
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menu->title = "Please insert the ROOT floppy";
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if (!dmenuOpenSimple(menu))
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return -1;
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}
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if (!floppyDev)
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continue;
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fd = open(floppyDev->devname, O_RDONLY);
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if (isDebug())
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msgDebug("getRootFloppy on %s yields fd of %d\n", floppyDev->devname, fd);
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}
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return fd;
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}
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Boolean
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mediaInitFloppy(Device *dev)
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{
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struct msdosfs_args dosargs;
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if (floppyMounted)
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return TRUE;
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if (Mkdir("/mnt", NULL)) {
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msgConfirm("Unable to make directory mountpoint for %s!", dev->devname);
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return FALSE;
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}
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if (!distWanted)
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msgConfirm("Please insert next floppy into %s", dev->description);
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else {
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msgConfirm("Please insert floppy containing %s into %s", distWanted, dev->description);
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distWanted = NULL;
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}
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memset(&dosargs, 0, sizeof dosargs);
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dosargs.fspec = dev->devname;
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dosargs.uid = dosargs.gid = 0;
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dosargs.mask = 0777;
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if (mount(MOUNT_MSDOS, "/mnt", 0, (caddr_t)&dosargs) == -1) {
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msgConfirm("Error mounting floppy %s (%s) on /mnt : %s", dev->name, dev->devname, strerror(errno));
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return FALSE;
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}
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if (isDebug())
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msgDebug("initFloppy: mounted floppy %s successfully on /mnt\n", dev->devname);
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floppyMounted = TRUE;
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return TRUE;
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}
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int
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mediaGetFloppy(Device *dev, char *file, Attribs *dist_attrs)
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{
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char buf[PATH_MAX];
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#ifdef DO_CRC_CHECK
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char *extn, *var;
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const char *val;
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char attrib[10];
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u_long cval1, clen1, cval2, clen2;
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#endif
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int fd;
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int nretries = 5;
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snprintf(buf, PATH_MAX, "/mnt/%s", file);
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if (access(buf, R_OK)) {
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if (dev->flags & OPT_EXPLORATORY_GET)
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return -1;
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else {
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while (access(buf, R_OK) != 0) {
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if (!--nretries) {
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msgConfirm("GetFloppy: Failed to get %s after retries;\ngiving up.", file);
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return -1;
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}
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distWanted = buf;
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(*dev->shutdown)(dev);
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if (!(dev->init)(dev))
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return -1;
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}
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}
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}
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fd = open(buf, O_RDONLY);
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#ifdef DO_CRC_CHECK
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if (dist_attrs != NULL && fd != -1) {
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extn = rindex(buf, '.');
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snprintf(attrib, 10, "cksum%s", extn);
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val = attr_match(dist_attrs, attrib);
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if (val != NULL) {
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if (isDebug())
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msgDebug("attr_match(%s,%s) returned `%s'\n", dist_attrs, attrib, val);
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var = strdup(val);
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cval1 = strtol(var, &extn, 10);
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clen1 = strtol(extn, NULL, 10);
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if (crc(fd, &cval2, &clen2) != 0) {
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msgConfirm("crc() of file `%s' failed!", file);
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close(fd);
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return -1;
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}
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if ((cval1 != cval2) || (clen1 != clen2)) {
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msgConfirm("Invalid file `%s' (checksum `%u %u' should be %s)", file, cval2, clen2, var);
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close(fd);
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return -1;
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}
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lseek(fd, 0, 0);
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}
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else
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msgNotify("No checksum information for file %s..", file);
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}
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#endif
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return fd;
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}
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void
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mediaShutdownFloppy(Device *dev)
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{
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if (floppyMounted) {
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if (unmount("/mnt", MNT_FORCE) != 0)
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msgDebug("Umount of floppy on /mnt failed: %s (%d)\n", strerror(errno), errno);
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else {
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floppyMounted = FALSE;
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msgConfirm("You may remove the floppy from %s", dev->description);
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}
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}
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}
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