[PATCH v2 1/5] qemu-nbd: Honor SIGINT and SIGHUP

[Eric Blake <eblake@redhat.com>]

Honoring just SIGTERM on Linux is too weak; we also want to handle
other common signals, and do so even on BSD.  Why?  Because at least
'qemu-nbd -B bitmap' needs a chance to clean up the in-use bit on
bitmaps when the server is shut down via a signal.

See also: http://bugzilla.redhat.com/1883608

Signed-off-by: Eric Blake <eblake@redhat.com>
---
 qemu-nbd.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/qemu-nbd.c b/qemu-nbd.c
index bacb69b0898b..e7520261134f 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -581,7 +581,7 @@ int main(int argc, char **argv)
     const char *pid_file_name = NULL;
     BlockExportOptions *export_opts;

-#if HAVE_NBD_DEVICE
+#ifdef CONFIG_POSIX
     /* The client thread uses SIGTERM to interrupt the server.  A signal
      * handler ensures that "qemu-nbd -v -c" exits with a nice status code.
      */
@@ -589,9 +589,9 @@ int main(int argc, char **argv)
     memset(&sa_sigterm, 0, sizeof(sa_sigterm));
     sa_sigterm.sa_handler = termsig_handler;
     sigaction(SIGTERM, &sa_sigterm, NULL);
-#endif /* HAVE_NBD_DEVICE */
+    sigaction(SIGINT, &sa_sigterm, NULL);
+    sigaction(SIGHUP, &sa_sigterm, NULL);

-#ifdef CONFIG_POSIX
     signal(SIGPIPE, SIG_IGN);
 #endif

-- 
2.28.0