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From 543610e2a818c44591670da35107ae8d17406382 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Tue, 5 Nov 2013 14:08:59 +0100
Subject: [PATCH 46/87] blockdev: Introduce DriveInfo.enable_auto_del

RH-Author: Kevin Wolf <kwolf@redhat.com>
Message-id: <1383660558-32096-6-git-send-email-kwolf@redhat.com>
Patchwork-id: 55384
O-Subject: [RHEL-7.0 qemu-kvm PATCH 05/24] blockdev: Introduce DriveInfo.enable_auto_del
Bugzilla: 978402
RH-Acked-by: Fam Zheng <famz@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>

BlockDriverStates shouldn't be affected by an unplugged guest device,
except if created with the legacy -drive command line option or the
drive_add HMP command.

Make the automatic deletion as well as cancelling of jobs conditional on
an enable_auto_del boolean that is only set in drive_init().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
(cherry picked from commit 2d246f01d374c1a10c48c45aa931aa18f0a56634)

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 blockdev.c                | 17 ++++++++++++++++-
 include/sysemu/blockdev.h |  1 +
 2 files changed, 17 insertions(+), 1 deletion(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 blockdev.c                |   17 ++++++++++++++++-
 include/sysemu/blockdev.h |    1 +
 2 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 2fb6d83..e379a91 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -89,6 +89,10 @@ void blockdev_mark_auto_del(BlockDriverState *bs)
 {
     DriveInfo *dinfo = drive_get_by_blockdev(bs);
 
+    if (dinfo && !dinfo->enable_auto_del) {
+        return;
+    }
+
     if (bs->job) {
         block_job_cancel(bs->job);
     }
@@ -747,6 +751,7 @@ static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to)
 DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
 {
     const char *value;
+    DriveInfo *dinfo;
 
     /* Change legacy command line options into QMP ones */
     qemu_opt_rename(all_opts, "iops", "throttling.iops-total");
@@ -784,7 +789,17 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
         qemu_opt_unset(all_opts, "cache");
     }
 
-    return blockdev_init(all_opts, block_default_type);
+    /* Actual block device init: Functionality shared with blockdev-add */
+    dinfo = blockdev_init(all_opts, block_default_type);
+    if (dinfo == NULL) {
+        goto fail;
+    }
+
+    /* Set legacy DriveInfo fields */
+    dinfo->enable_auto_del = true;
+
+fail:
+    return dinfo;
 }
 
 void do_commit(Monitor *mon, const QDict *qdict)
diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h
index 804ec88..1082091 100644
--- a/include/sysemu/blockdev.h
+++ b/include/sysemu/blockdev.h
@@ -37,6 +37,7 @@ struct DriveInfo {
     int bus;
     int unit;
     int auto_del;               /* see blockdev_mark_auto_del() */
+    bool enable_auto_del; /* Only for legacy drive_init() */
     int media_cd;
     int cyls, heads, secs, trans;
     QemuOpts *opts;
-- 
1.7.1