default devices: drives

Add a default_drive variable which specified whenever the default drives
(cdrom, floppy, sd) should be created.  It is cleared when the new
-nodefaults switch is specified on the command line.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit aa40fc9c96474b0135d1b940611862f260aedba7)

1 files changed, 10 insertions, 6 deletions

diff --git a/vl.c b/vl.c
index 482583626..f64f72ec5 100644
--- a/vl.c
+++ b/vl.c
@@ -276,6 +276,7 @@ static int default_serial = 1;
 static int default_parallel = 1;
 static int default_monitor = 1;
 static int default_vga = 1;
+static int default_drive = 1;
 
 static struct {
     const char *driver;
@@ -5477,6 +5478,7 @@ int main(int argc, char **argv, char **envp)
                 default_monitor = 0;
                 default_vga = 0;
                 default_net = 0;
+                default_drive = 0;
                 break;
 #ifndef _WIN32
             case QEMU_OPTION_chroot:
@@ -5709,14 +5711,16 @@ int main(int argc, char **argv, char **envp)
 
     blk_mig_init();
 
-    /* we always create the cdrom drive, even if no disk is there */
-    drive_add(NULL, CDROM_ALIAS);
+    if (default_drive) {
+        /* we always create the cdrom drive, even if no disk is there */
+        drive_add(NULL, CDROM_ALIAS);
 
-    /* we always create at least one floppy */
-    drive_add(NULL, FD_ALIAS, 0);
+        /* we always create at least one floppy */
+        drive_add(NULL, FD_ALIAS, 0);
 
-    /* we always create one sd slot, even if no card is in it */
-    drive_add(NULL, SD_ALIAS);
+        /* we always create one sd slot, even if no card is in it */
+        drive_add(NULL, SD_ALIAS);
+    }
 
     /* open the virtual block devices */
     if (snapshot)