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From 54deefe8c7efcf53da58d1cc546ca34c27a975b8 Mon Sep 17 00:00:00 2001
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From: Max Reitz <mreitz@redhat.com>
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Date: Mon, 25 Jun 2018 13:04:46 +0200
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Subject: [PATCH 046/268] qemu-io: Use purely string blockdev options
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RH-Author: Max Reitz <mreitz@redhat.com>
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Message-id: <20180618163106.23010-2-mreitz@redhat.com>
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Patchwork-id: 80775
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O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH 1/3] qemu-io: Use purely string blockdev options
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Bugzilla: 1576598
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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Currently, qemu-io only uses string-valued blockdev options (as all are
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converted directly from QemuOpts) -- with one exception: -U adds the
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force-share option as a boolean. This in itself is already a bit
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questionable, but a real issue is that it also assumes the value already
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existing in the options QDict would be a boolean, which is wrong.
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That has the following effect:
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$ ./qemu-io -r -U --image-opts \
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driver=file,filename=/dev/null,force-share=off
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[1] 15200 segmentation fault (core dumped) ./qemu-io -r -U
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--image-opts driver=file,filename=/dev/null,force-share=off
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Since @opts is converted from QemuOpts, the value must be a string, and
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we have to compare it as such. Consequently, it makes sense to also set
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it as a string instead of a boolean.
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Message-id: 20180502202051.15493-2-mreitz@redhat.com
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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(cherry picked from commit 2a01c01f9ecb43af4c0a85fe6adc429ffc9c31b5)
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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qemu-io.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/qemu-io.c b/qemu-io.c
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index 72fee0d..73c638f 100644
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--- a/qemu-io.c
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+++ b/qemu-io.c
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@@ -95,12 +95,12 @@ static int openfile(char *name, int flags, bool writethrough, bool force_share,
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opts = qdict_new();
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}
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if (qdict_haskey(opts, BDRV_OPT_FORCE_SHARE)
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- && !qdict_get_bool(opts, BDRV_OPT_FORCE_SHARE)) {
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+ && strcmp(qdict_get_str(opts, BDRV_OPT_FORCE_SHARE), "on")) {
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error_report("-U conflicts with image options");
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qobject_unref(opts);
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return 1;
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}
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- qdict_put_bool(opts, BDRV_OPT_FORCE_SHARE, true);
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+ qdict_put_str(opts, BDRV_OPT_FORCE_SHARE, "on");
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}
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qemuio_blk = blk_new_open(name, NULL, opts, flags, &local_err);
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if (!qemuio_blk) {
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--
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1.8.3.1
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