If the 'cdrom=' option is specified in the definition file but media is

not found in the CD drive then main() in vl.c exits and the guest appears
to hang.  This patch modifies vl.c slightly to check for the presents of
media.  If the cdrom cannot be opened then the cd entry is removed from
hd_filename[] and bs_table[] allowing the guest to continue initializing.
If the guest requires the CD media then the guest should report, gracefully
or otherwise, that it's missing.

From: Ross Maxfield <rmaxfiel@novell.com>

Signed-off-by: Keir Fraser <keir@xensource.com>

diff --git a/tools/ioemu/vl.c b/tools/ioemu/vl.c
index da009dd11bfe5c4c8c6400545cae5f99b6785004..d4f305f178c9e56878c1b657dee138069a10c77b 100644 (file)
--- a/tools/ioemu/vl.c
+++ b/tools/ioemu/vl.c
@@ -3245,8 +3245,17 @@ int main(int argc, char **argv)
     /* we always create the cdrom drive, even if no disk is there */
     bdrv_init();
     if (has_cdrom) {
-        bs_table[2] = bdrv_new("cdrom");
-        bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
+        int fd;
+        if ( (fd = open(hd_filename[2], O_RDONLY | O_BINARY)) < 0) {
+                hd_filename[2]=NULL;
+                bs_table[2]=NULL;
+                fprintf(logfile, "Could not open CD %s.\n", hd_filename[i]);
+        }
+        else {
+                close(fd);
+                bs_table[2] = bdrv_new("cdrom");
+                bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
+        }
     }
 
     /* open the virtual block devices */