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510 lines
16 KiB
510 lines
16 KiB
/*
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* cdinstall.c - code to set up cdrom installs
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*
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* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author(s): Erik Troan <ewt@redhat.com>
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* Matt Wilson <msw@redhat.com>
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* Michael Fulbright <msf@redhat.com>
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* Jeremy Katz <katzj@redhat.com>
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*/
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#include <ctype.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <newt.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mount.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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/* FIXME Remove hack when: https://bugzilla.redhat.com/show_bug.cgi?id=478663
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is resolved */
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/* Hack both __BIG_ENDIAN and __LITTLE_ENDIAN get defined by glibc, the
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kernel headers we need do not like this! */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#undef __BIG_ENDIAN
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#else
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#undef __LITTLE_ENDIAN
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#endif
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#include <asm/types.h>
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#include <limits.h>
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#include <linux/cdrom.h>
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#include "kickstart.h"
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#include "loader.h"
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#include "loadermisc.h"
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#include "log.h"
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#include "lang.h"
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#include "modules.h"
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#include "method.h"
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#include "cdinstall.h"
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#include "mediacheck.h"
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#include "windows.h"
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#include "../isys/imount.h"
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#include "../isys/isys.h"
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/* boot flags */
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extern uint64_t flags;
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/* ejects the CD device the device node points at */
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static void ejectCdrom(char *device) {
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int ejectfd;
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if (!device) return;
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logMessage(INFO, "ejecting %s...",device);
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if ((ejectfd = open(device, O_RDONLY | O_NONBLOCK, 0)) >= 0) {
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ioctl(ejectfd, CDROM_LOCKDOOR, 0);
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if (ioctl(ejectfd, CDROMEJECT, 0))
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logMessage(ERROR, "eject failed on device %s: %m", device);
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close(ejectfd);
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} else {
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logMessage(ERROR, "could not open device %s: %m", device);
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}
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}
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static char *cdrom_drive_status(int rc) {
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struct {
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int code;
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char *str;
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} status_codes[] =
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{
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{ CDS_NO_INFO, "CDS_NO_INFO" },
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{ CDS_NO_DISC, "CDS_NO_DISC" },
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{ CDS_TRAY_OPEN, "CDS_TRAY_OPEN" },
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{ CDS_DRIVE_NOT_READY, "CDS_DRIVE_NOT_READY" },
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{ CDS_DISC_OK, "CDS_DISC_OK" },
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{ CDS_AUDIO, "CDS_AUDIO" },
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{ CDS_DATA_1, "CDS_DATA_1" },
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{ CDS_DATA_2, "CDS_DATA_2" },
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{ CDS_XA_2_1, "CDS_XA_2_1" },
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{ CDS_XA_2_2, "CDS_XA_2_2" },
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{ CDS_MIXED, "CDS_MIXED" },
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{ INT_MAX, NULL },
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};
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int i;
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if (rc < 0)
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return strerror(-rc);
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for (i = 0; status_codes[i].code != INT_MAX; i++) {
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if (status_codes[i].code == rc)
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return status_codes[i].str;
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}
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return NULL;
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}
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static int waitForCdromTrayClose(int fd) {
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int rc;
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int prev = INT_MAX;
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do {
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char *status = NULL;
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rc = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
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if (rc < 0)
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rc = -errno;
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/* only bother to print the status if it changes */
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if (prev == INT_MAX || prev != rc) {
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status = cdrom_drive_status(rc);
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if (status != NULL) {
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logMessage(INFO, "drive status is %s", status);
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} else {
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logMessage(INFO, "drive status is unknown status code %d", rc);
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}
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}
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prev = rc;
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if (rc == CDS_DRIVE_NOT_READY)
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usleep(100000);
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} while (rc == CDS_DRIVE_NOT_READY);
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return rc;
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}
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static void closeCdromTray(char *device) {
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int fd;
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if (!device || !*device)
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return;
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logMessage(INFO, "closing CD tray on %s .", device);
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if ((fd = open(device, O_RDONLY | O_NONBLOCK, 0)) >= 0) {
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if (ioctl(fd, CDROMCLOSETRAY, 0)) {
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logMessage(ERROR, "closetray failed on device %s: %m", device);
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} else {
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waitForCdromTrayClose(fd);
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ioctl(fd, CDROM_LOCKDOOR, 1);
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}
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close(fd);
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} else {
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logMessage(ERROR, "could not open device %s: %m", device);
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}
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}
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/* Given cd device cddriver, this function will attempt to check its internal
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* checksum.
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*/
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static void mediaCheckCdrom(char *cddriver) {
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int rc;
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int first;
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first = 1;
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do {
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char *descr;
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char *tstamp;
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int ejectcd;
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/* init every pass */
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ejectcd = 0;
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descr = NULL;
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closeCdromTray(cddriver);
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/* if first time through, see if they want to eject the CD */
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/* currently in the drive (most likely the CD they booted from) */
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/* and test a different disk. Otherwise just test the disk in */
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/* the drive since it was inserted in the previous pass through */
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/* this loop, so they want it tested. */
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if (first) {
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first = 0;
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rc = newtWinChoice(_("Media Check"), _("Test"), _("Eject Disc"),
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_("Choose \"%s\" to test the disc currently in "
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"the drive, or \"%s\" to eject the disc and "
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"insert another for testing."), _("Test"),
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_("Eject Disc"));
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if (rc == 2)
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ejectcd = 1;
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}
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if (!ejectcd) {
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/* XXX MSFFIXME: should check return code for error */
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readStampFileFromIso(cddriver, &tstamp, &descr);
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doMediaCheck(cddriver, descr);
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if (descr)
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free(descr);
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}
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ejectCdrom(cddriver);
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rc = newtWinChoice(_("Media Check"), _("Test"), _("Continue"),
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_("If you would like to test additional media, "
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"insert the next disc and press \"%s\". "
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"Testing each disc is not strictly required, however "
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"it is highly recommended. Minimally, the discs should "
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"be tested prior to using them for the first time. "
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"After they have been successfully tested, it is not "
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"required to retest each disc prior to using it again."),
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_("Test"), _("Continue"));
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if (rc == 2) {
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closeCdromTray(cddriver);
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return;
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} else {
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continue;
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}
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} while (1);
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}
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/* output an error message when CD in drive is not the correct one */
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/* Used by mountCdromStage2() */
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static void wrongCDMessage(void) {
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newtWinMessage(_("Error"), _("OK"),
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_("The %s disc was not found "
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"in any of your drives. Please insert "
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"the %s disc and press %s to retry."),
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getProductName(), getProductName(), _("OK"));
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}
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/* ask about doing media check */
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static void queryCDMediaCheck(char *dev, char *location) {
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int rc;
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char *stage2loc;
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/* dont bother to test in automated installs */
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if (FL_KICKSTART(flags) && !FL_MEDIACHECK(flags))
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return;
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/* see if we should check image(s) */
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/* in rescue mode only test if they explicitly asked to */
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if (!FL_RESCUE(flags) || FL_MEDIACHECK(flags)) {
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startNewt();
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rc = newtWinChoice(_("Disc Found"), _("OK"), _("Skip"),
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_("To begin testing the media before installation press %s.\n\n"
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"Choose %s to skip the media test and start the installation."),
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_("OK"), _("Skip"));
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if (rc != 2) {
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/* We already mounted the CD earlier to verify there's at least a
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* stage2 image. Now we need to unmount to perform the check, then
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* remount to pretend nothing ever happened.
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*/
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umount(location);
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mediaCheckCdrom(dev);
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do {
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if (doPwMount(dev, location, "iso9660", "ro", NULL)) {
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ejectCdrom(dev);
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wrongCDMessage();
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continue;
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}
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checked_asprintf(&stage2loc, "%s/images/install.img",
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location);
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if (access(stage2loc, R_OK)) {
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free(stage2loc);
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umount(location);
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ejectCdrom(dev);
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wrongCDMessage();
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continue;
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}
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free(stage2loc);
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break;
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} while (1);
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}
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}
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}
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/* Set up a CD/DVD drive to mount the stage2 image from. If successful, the
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* stage2 image will be left mounted on /mnt/runtime.
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*
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* location: Where to mount the media at (usually /mnt/stage2)
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* loaderData: The usual, can be NULL if no info
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* interactive: Whether or not to prompt about questions/errors
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* mediaCheck: Do we run media check or not?
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*/
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static char *setupCdrom(char *location, struct loaderData_s *loaderData,
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int interactive, int mediaCheck) {
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int i, rc;
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int stage2inram = 0;
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char *retbuf = NULL, *stage2loc, *stage2img;
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struct device ** devices;
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char *cddev = NULL;
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devices = getDevices(DEVICE_CDROM);
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if (!devices) {
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logMessage(ERROR, "got to setupCdrom without a CD device");
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return NULL;
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}
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checked_asprintf(&stage2loc, "%s/images/install.img", location);
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/* JKFIXME: ASSERT -- we have a cdrom device when we get here */
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do {
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for (i = 0; devices[i]; i++) {
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char *tmp = NULL;
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int fd;
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if (!devices[i]->device)
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continue;
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if (strncmp("/dev/", devices[i]->device, 5)) {
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checked_asprintf(&tmp, "/dev/%s", devices[i]->device);
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free(devices[i]->device);
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devices[i]->device = tmp;
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}
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logMessage(INFO, "trying to mount CD device %s on %s",
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devices[i]->device, location);
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if (!FL_CMDLINE(flags))
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winStatus(60, 3, _("Scanning"), _("Looking for installation images on CD device %s\n"), devices[i]->device);
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else
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printf(_("Looking for installation images on CD device %s"), devices[i]->device);
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fd = open(devices[i]->device, O_RDONLY | O_NONBLOCK);
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if (fd < 0) {
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logMessage(ERROR, "Couldn't open %s: %m", devices[i]->device);
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if (!FL_CMDLINE(flags))
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newtPopWindow();
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continue;
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}
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rc = waitForCdromTrayClose(fd);
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close(fd);
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switch (rc) {
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case CDS_NO_INFO:
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logMessage(ERROR, "Drive tray reports CDS_NO_INFO");
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break;
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case CDS_NO_DISC:
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if (!FL_CMDLINE(flags))
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newtPopWindow();
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continue;
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case CDS_TRAY_OPEN:
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logMessage(ERROR, "Drive tray reports open when it should be closed");
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break;
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default:
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break;
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}
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if (!FL_CMDLINE(flags))
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newtPopWindow();
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if (!(rc=doPwMount(devices[i]->device, location, "iso9660", "ro", NULL))) {
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cddev = devices[i]->device;
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if (!access(stage2loc, R_OK)) {
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char *updpath;
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if (mediaCheck)
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queryCDMediaCheck(devices[i]->device, location);
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/* if in rescue mode lets copy stage 2 into RAM so we can */
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/* free up the CD drive and user can have it avaiable to */
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/* aid system recovery. */
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if (FL_RESCUE(flags) && !FL_TEXT(flags) &&
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totalMemory() > MIN_GUI_RAM ) {
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rc = copyFile(stage2loc, "/tmp/install.img");
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stage2img = strdup("/tmp/install.img");
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stage2inram = 1;
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} else {
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stage2img = strdup(stage2loc);
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stage2inram = 0;
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}
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rc = mountStage2(stage2img);
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free(stage2img);
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if (rc) {
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logMessage(INFO, "mounting stage2 failed");
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umount(location);
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continue;
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}
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checked_asprintf(&updpath, "%s/images/updates.img", location);
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logMessage(INFO, "Looking for updates in %s", updpath);
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copyUpdatesImg(updpath);
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free(updpath);
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checked_asprintf(&updpath, "%s/images/product.img", location);
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logMessage(INFO, "Looking for product in %s", updpath);
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copyProductImg(updpath);
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free(updpath);
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/* if in rescue mode and we copied stage2 to RAM */
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/* we can now unmount the CD */
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if (FL_RESCUE(flags) && stage2inram) {
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umount(location);
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}
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checked_asprintf(&retbuf, "cdrom://%s:%s",
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devices[i]->device, location);
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} else {
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/* this wasnt the CD we were looking for, clean up and */
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/* try the next CD drive */
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umount(location);
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}
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}
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}
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if (!retbuf) {
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if (interactive) {
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char * buf;
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checked_asprintf(&buf, _("The %s disc was not found in any of your "
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"CDROM drives. Please insert the %s disc "
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"and press %s to retry."),
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getProductName(), getProductName(), _("OK"));
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ejectCdrom(cddev);
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rc = newtWinChoice(_("Disc Not Found"),
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_("OK"), _("Back"), buf, _("OK"));
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free(buf);
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if (rc == 2)
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goto err;
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} else {
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/* we can't ask them about it, so just return not found */
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goto err;
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}
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}
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} while (!retbuf);
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err:
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free(stage2loc);
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return retbuf;
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}
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/* try to find a install CD non-interactively */
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char * findAnacondaCD(char *location) {
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return setupCdrom(location, NULL, 0, 1);
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}
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/* look for a CD and mount it. if we have problems, ask */
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char * mountCdromImage(struct installMethod * method,
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char * location, struct loaderData_s * loaderData) {
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return setupCdrom(location, loaderData, 1, 1);
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}
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void setKickstartCD(struct loaderData_s * loaderData, int argc, char ** argv) {
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logMessage(INFO, "kickstartFromCD");
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loaderData->method = METHOD_CDROM;
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}
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int kickstartFromCD(char *kssrc) {
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int rc, i;
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char *p, *kspath;
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struct device ** devices;
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logMessage(INFO, "getting kickstart file from first CDROM");
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devices = getDevices(DEVICE_CDROM);
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/* usb can take some time to settle, even with the various hacks we
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* have in place. some systems use portable USB CD-ROM drives, try to
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* make sure there really isn't one before bailing */
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for (i = 0; !devices && i < 10; ++i) {
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logMessage(INFO, "sleeping to wait for a USB CD-ROM");
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sleep(2);
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devices = getDevices(DEVICE_CDROM);
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}
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if (!devices) {
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logMessage(ERROR, "No CDROM devices found!");
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return 1;
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}
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/* format is cdrom:[/path/to/ks.cfg] */
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kspath = "";
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p = strchr(kssrc, ':');
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if (p)
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kspath = p + 1;
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if (!p || strlen(kspath) < 1)
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kspath = "/ks.cfg";
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for (i=0; devices[i]; i++) {
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if (!devices[i]->device)
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continue;
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rc = getKickstartFromBlockDevice(devices[i]->device, kspath);
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if (rc == 0)
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return 0;
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}
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startNewt();
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newtWinMessage(_("Error"), _("OK"),
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_("Cannot find kickstart file on CDROM."));
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return 1;
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}
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/* vim:set shiftwidth=4 softtabstop=4 et */
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