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[Qemu-block] [PATCH] progress: Show current progress on SIGINFO

From: Max Reitz
Subject: [Qemu-block] [PATCH] progress: Show current progress on SIGINFO
Date: Wed, 8 Feb 2017 00:57:57 +0100

Currently we only print progress information on retrieval of SIGUSR1.
Some systems have a dedicated SIGINFO for this, however, so it should be
handled appropriately if it is available.

Buglink: https://bugs.launchpad.net/qemu/+bug/1662468
Signed-off-by: Max Reitz <address@hidden>
Can anyone test this on a BSD system? O:-)
 util/qemu-progress.c | 3 +++
 qemu-img.texi        | 3 ++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/util/qemu-progress.c b/util/qemu-progress.c
index f745233763..3c2223c1a2 100644
--- a/util/qemu-progress.c
+++ b/util/qemu-progress.c
@@ -88,6 +88,9 @@ static void progress_dummy_init(void)
     action.sa_handler = sigusr_print;
     action.sa_flags = 0;
     sigaction(SIGUSR1, &action, NULL);
+#ifdef SIGINFO
+    sigaction(SIGINFO, &action, NULL);
      * SIGUSR1 is SIG_IPI and gets blocked in qemu_init_main_loop(). In the
diff --git a/qemu-img.texi b/qemu-img.texi
index 174aae38b7..b7e849b22b 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -84,7 +84,8 @@ with or without a command shows help and lists the supported 
 @item -p
 display progress bar (compare, convert and rebase commands only).
 If the @var{-p} option is not used for a command that supports it, the
-progress is reported when the process receives a @code{SIGUSR1} signal.
+progress is reported when the process receives a @code{SIGUSR1} or
address@hidden signal.
 @item -q
 Quiet mode - do not print any output (except errors). There's no progress bar
 in case both @var{-q} and @var{-p} options are used.

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