- Fix a bug in sysinstall related to mounting CD-ROMs. If mount(2) fails

  with EBUSY and a cdrom is not mounted at /cdrom, sysinstall fails to
  treat it as an error and thinks that the disk mounted ok.  However, it
  doesn't find a cdrom.inf file so it complains.  Later when it tries to
  unmount the disk due to a mediaClose() umount(2) returns an error, and it
  never clears its internal mounted flag.  The fix here is to properly
  handle EBUSY as an error if there isn't a CD already mounted at /cdrom.
- Add a new CDROMInitQuiet variable that can be used to shut up the dialog
  box about the mount(2) system call failing when trying to mount a CD-ROM.
  This is used by the feature described below.
- When using a fixit CD, first try to see if we can mount the disc in the
  drive now and use it as a fixit CD.  If not, then prompt the user to
  insert the disc and try again.  If we do succeed on the first "silent"
  probe then we don't ask the user to eject the disk after leaving fixit
  mode.
- Add a simple file existence test to make sure that the disc that we mount
  really is a livefs disc.
- Explicitly switch back to ttyv0 when using the standard console after
  the fixit shell dies.  Previously this behavior worked accidentally
  because all the fixit modes popped up a dialog box which contained a
  hidden switch to ttyv0.

MFC after:	1 day

1 files changed, 23 insertions, 5 deletions

diff --git a/usr.sbin/sysinstall/install.c b/usr.sbin/sysinstall/install.c
index 1120f55..d1bc571 100644
--- a/usr.sbin/sysinstall/install.c
+++ b/usr.sbin/sysinstall/install.c
@@ -36,6 +36,7 @@
 
 #include "sysinstall.h"
 #include <ctype.h>
+#include <sys/consio.h>
 #include <sys/disklabel.h>
 #include <sys/errno.h>
 #include <sys/ioctl.h>
@@ -328,6 +329,7 @@ int
 installFixitCDROM(dialogMenuItem *self)
 {
     struct stat sb;
+    int need_eject;
 
     if (!RunningAsInit)
 	return DITEM_SUCCESS;
@@ -336,18 +338,29 @@ installFixitCDROM(dialogMenuItem *self)
     (void)unlink("/mnt2");
     (void)rmdir("/mnt2");
 
+    need_eject = 0;
+    CDROMInitQuiet = 1;
     while (1) {
-	msgConfirm("Please insert a FreeBSD live filesystem CD/DVD and press return");
+	if (need_eject)
+	    msgConfirm(
+	"Please insert a FreeBSD live filesystem CD/DVD and press return");
 	if (DITEM_STATUS(mediaSetCDROM(NULL)) != DITEM_SUCCESS
 	    || !DEVICE_INIT(mediaDevice)) {
 	    /* If we can't initialize it, it's probably not a FreeBSD CDROM so punt on it */
 	    mediaClose();
-	    if (msgYesNo("Unable to mount the disc - do you want to try again?") != 0)
+	    if (need_eject && msgYesNo("Unable to mount the disc. Do you want to try again?") != 0)
 		return DITEM_FAILURE;
-	}
-	else
+	} else if (!file_readable("/dist/rescue/ldconfig")) {
+		mediaClose();
+		if (need_eject &&
+		    msgYesNo("Unable to find a FreeBSD live filesystem. Do you want to try again?") != 0)
+		    return DITEM_FAILURE;
+	} else
 	    break;
+	CDROMInitQuiet = 0;
+	need_eject = 1;
     }
+    CDROMInitQuiet = 0;
 
     /* Since the fixit code expects everything to be in /mnt2, and the CDROM mounting stuff /dist, do
      * a little kludge dance here..
@@ -397,7 +410,8 @@ installFixitCDROM(dialogMenuItem *self)
 	symlink("/mnt2/usr/bin/vi", "/usr/bin/vi");
     fixit_common();
     mediaClose();
-    msgConfirm("Please remove the FreeBSD fixit CDROM/DVD now.");
+    if (need_eject)
+	msgConfirm("Please remove the FreeBSD fixit CDROM/DVD now.");
     return DITEM_SUCCESS;
 }
 
@@ -527,6 +541,10 @@ fixit_common(void)
 	(void)waitpid(child, &waitstatus, 0);
 	if (strcmp(variable_get(VAR_FIXIT_TTY), "serial") == 0)
 	    systemResumeDialog();
+	else if (OnVTY) {
+	    ioctl(0, VT_ACTIVATE, 0);
+	    msgInfo(NULL);
+	}
     }
     dialog_clear();
 }