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From a06249cc31c0f8c2ae37c7e0ff047a922a265e7c Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Tue, 11 Feb 2014 16:24:43 +0100
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Subject: [PATCH 26/28] qemu-progress: Fix progress printing on SIGUSR1
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <1392135884-10508-3-git-send-email-kwolf@redhat.com>
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Patchwork-id: 57223
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 2/3] qemu-progress: Fix progress printing on SIGUSR1
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Bugzilla: 997878
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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Since commit a7aae221 ('Switch SIG_IPI to SIGUSR1'), SIGUSR1 is blocked
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during startup, breaking the progress report in tools.
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This patch reenables the signal when initialising a progress report.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Benoit Canet <benoit@irqsave.net>
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(cherry picked from commit 3c4b4e383e82ab3db307ee01f12ab0d4a28584dc)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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util/qemu-progress.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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util/qemu-progress.c | 10 ++++++++++
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1 files changed, 10 insertions(+), 0 deletions(-)
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diff --git a/util/qemu-progress.c b/util/qemu-progress.c
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index ad33fee..4ee5cd0 100644
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--- a/util/qemu-progress.c
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+++ b/util/qemu-progress.c
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@@ -82,12 +82,22 @@ static void progress_dummy_init(void)
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{
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#ifdef CONFIG_POSIX
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struct sigaction action;
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+ sigset_t set;
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memset(&action, 0, sizeof(action));
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sigfillset(&action.sa_mask);
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action.sa_handler = sigusr_print;
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action.sa_flags = 0;
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sigaction(SIGUSR1, &action, NULL);
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+
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+ /*
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+ * SIGUSR1 is SIG_IPI and gets blocked in qemu_init_main_loop(). In the
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+ * tools that use the progress report SIGUSR1 isn't used in this meaning
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+ * and instead should print the progress, so reenable it.
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+ */
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+ sigemptyset(&set);
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+ sigaddset(&set, SIGUSR1);
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+ pthread_sigmask(SIG_UNBLOCK, &set, NULL);
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#endif
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state.print = progress_dummy_print;
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--
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1.7.1
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