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From 12708a0fc9f3da1d1cc492bb3a49844b02e76b40 Mon Sep 17 00:00:00 2001
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From: Uri Lublin <uril@redhat.com>
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Date: Sun, 11 Oct 2020 20:59:17 +0300
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Subject: [PATCH vd_agent_linux 17/17] vdagentd: do not allow to use an already
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used file-xfer id
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Signed-off-by: Uri Lublin <uril@redhat.com>
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Acked-by: Frediano Ziglio <fziglio@redhat.com>
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---
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src/vdagentd/vdagentd.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/src/vdagentd/vdagentd.c b/src/vdagentd/vdagentd.c
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index 9243cfb..279e7c3 100644
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--- a/src/vdagentd/vdagentd.c
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+++ b/src/vdagentd/vdagentd.c
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@@ -404,6 +404,13 @@ static void do_client_file_xfer(VirtioPort *vport,
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"Cancelling client file-xfer request %u",
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s->id, VD_AGENT_FILE_XFER_STATUS_ERROR, (void*) &error, detail_size);
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return;
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+ } else if (g_hash_table_lookup(active_xfers, GUINT_TO_POINTER(s->id)) != NULL) {
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+ // id is already used -- client is confused
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+ send_file_xfer_status(vport,
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+ "File transfer ID is already used. "
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+ "Cancelling client file-xfer request %u",
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+ s->id, VD_AGENT_FILE_XFER_STATUS_ERROR, NULL, 0);
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+ return;
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}
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msg_type = VDAGENTD_FILE_XFER_START;
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id = s->id;
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--
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2.26.2
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