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From f917e135d99ab0749ab747b3abce45e78de8c479 Mon Sep 17 00:00:00 2001
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From: Amit Shah <amit.shah@redhat.com>
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Date: Fri, 14 Feb 2014 08:27:07 +0100
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Subject: [PATCH 3/3] monitor: Cleanup mon->outbuf on write error
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RH-Author: Amit Shah <amit.shah@redhat.com>
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Message-id: <a12d1cd833d1021980196981ad66eb268e26e507.1392365234.git.amit.shah@redhat.com>
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Patchwork-id: 57275
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O-Subject: [RHEL 7.0 qemu-kvm PATCH 1/1] monitor: Cleanup mon->outbuf on write error
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Bugzilla: 1065225
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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RH-Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
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From: Stratos Psomadakis <psomas@grnet.gr>
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In case monitor_flush() fails to write the contents of mon->outbuf to
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the output device, mon->outbuf is not cleaned up properly. Check the
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return code of the qemu_chr_fe_write() function and cleanup the outbuf
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if it fails.
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References: http://lists.nongnu.org/archive/html/qemu-devel/2014-01/msg02890.html
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Bugzilla: 1065225
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Signed-off-by: Stratos Psomadakis <psomas@grnet.gr>
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Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
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Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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(cherry picked from commit 056f49ff2cf645dc484956b00b65a3aa18a1a9a3)
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Signed-off-by: Amit Shah <amit.shah@redhat.com>
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---
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monitor.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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monitor.c | 4 ++--
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1 files changed, 2 insertions(+), 2 deletions(-)
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diff --git a/monitor.c b/monitor.c
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index 8f36f91..a6abfb5 100644
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--- a/monitor.c
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+++ b/monitor.c
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@@ -287,8 +287,8 @@ void monitor_flush(Monitor *mon)
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if (len && !mon->mux_out) {
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rc = qemu_chr_fe_write(mon->chr, (const uint8_t *) buf, len);
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- if (rc == len) {
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- /* all flushed */
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+ if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
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+ /* all flushed or error */
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QDECREF(mon->outbuf);
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mon->outbuf = qstring_new();
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return;
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--
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1.7.1
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