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From 616407b06517361ce444dcc0960aeaf55b52da33 Mon Sep 17 00:00:00 2001
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From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
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Date: Mon, 27 Jan 2020 19:01:41 +0100
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Subject: [PATCH 070/116] virtiofsd: Handle hard reboot
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Message-id: <20200127190227.40942-67-dgilbert@redhat.com>
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Patchwork-id: 93521
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O-Subject: [RHEL-AV-8.2 qemu-kvm PATCH 066/112] virtiofsd: Handle hard reboot
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Bugzilla: 1694164
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RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
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From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
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Handle a
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mount
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hard reboot (without unmount)
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mount
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we get another 'init' which FUSE doesn't normally expect.
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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(cherry picked from commit e8556f49098b5d95634e592d79a97f761b76c96e)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tools/virtiofsd/fuse_lowlevel.c | 16 +++++++++++++++-
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1 file changed, 15 insertions(+), 1 deletion(-)
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diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowlevel.c
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index 7d742b5..65f91da 100644
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--- a/tools/virtiofsd/fuse_lowlevel.c
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+++ b/tools/virtiofsd/fuse_lowlevel.c
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@@ -2433,7 +2433,21 @@ void fuse_session_process_buf_int(struct fuse_session *se,
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goto reply_err;
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}
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} else if (in->opcode == FUSE_INIT || in->opcode == CUSE_INIT) {
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- goto reply_err;
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+ if (fuse_lowlevel_is_virtio(se)) {
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+ /*
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+ * TODO: This is after a hard reboot typically, we need to do
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+ * a destroy, but we can't reply to this request yet so
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+ * we can't use do_destroy
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+ */
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+ fuse_log(FUSE_LOG_DEBUG, "%s: reinit\n", __func__);
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+ se->got_destroy = 1;
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+ se->got_init = 0;
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+ if (se->op.destroy) {
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+ se->op.destroy(se->userdata);
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+ }
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+ } else {
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+ goto reply_err;
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+ }
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}
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err = EACCES;
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--
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1.8.3.1
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