From ef27c0164bee4e910d0f2e20928688f873d924a3 Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Mon, 4 Feb 2019 20:42:06 +0100
Subject: [PATCH 06/33] file-posix: Fix shared locks on reopen commit

RH-Author: Max Reitz <mreitz@redhat.com>
Message-id: <20190204204207.18079-7-mreitz@redhat.com>
Patchwork-id: 84225
O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 6/7] file-posix: Fix shared locks on reopen commit
Bugzilla: 1551486
RH-Acked-by: John Snow <jsnow@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>

s->locked_shared_perm is the set of bits locked in the file, which is
the inverse of the permissions actually shared.  So we need to pass them
as they are to raw_apply_lock_bytes() instead of inverting them again.

Reported-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 577a133988c76e4ebf01d050d0d758d207a1baf7)
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 block/file-posix.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/file-posix.c b/block/file-posix.c
index 97e7ff2..deecf58 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -929,7 +929,7 @@ static void raw_reopen_commit(BDRVReopenState *state)
 
     /* Copy locks to the new fd before closing the old one. */
     raw_apply_lock_bytes(NULL, rs->fd, s->locked_perm,
-                         ~s->locked_shared_perm, false, &local_err);
+                         s->locked_shared_perm, false, &local_err);
     if (local_err) {
         /* shouldn't fail in a sane host, but report it just in case. */
         error_report_err(local_err);
-- 
1.8.3.1