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From fe031dbbf5e287f64de9fcc9aec361e8ab492109 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 19:02:24 +0100
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Subject: [PATCH 113/116] virtiofsd/passthrough_ll: Pass errno to
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fuse_reply_err()
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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: <20200127190227.40942-110-dgilbert@redhat.com>
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Patchwork-id: 93559
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O-Subject: [RHEL-AV-8.2 qemu-kvm PATCH 109/112] virtiofsd/passthrough_ll: Pass errno to fuse_reply_err()
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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: Xiao Yang <yangx.jy@cn.fujitsu.com>
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lo_copy_file_range() passes -errno to fuse_reply_err() and then fuse_reply_err()
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changes it to errno again, so that subsequent fuse_send_reply_iov_nofree() catches
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the wrong errno.(i.e. reports "fuse: bad error value: ...").
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Make fuse_send_reply_iov_nofree() accept the correct -errno by passing errno
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directly in lo_copy_file_range().
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Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
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Reviewed-by: Eryu Guan <eguan@linux.alibaba.com>
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dgilbert: Sent upstream and now Merged as aa1185e153f774f1df65
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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(cherry picked from commit a931b6861e59c78d861017e9c6a9c161ff49a163)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tools/virtiofsd/passthrough_ll.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
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index fc15d61..e6f2399 100644
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--- a/tools/virtiofsd/passthrough_ll.c
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+++ b/tools/virtiofsd/passthrough_ll.c
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@@ -2441,7 +2441,7 @@ static void lo_copy_file_range(fuse_req_t req, fuse_ino_t ino_in, off_t off_in,
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res = copy_file_range(in_fd, &off_in, out_fd, &off_out, len, flags);
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if (res < 0) {
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- fuse_reply_err(req, -errno);
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+ fuse_reply_err(req, errno);
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} else {
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fuse_reply_write(req, res);
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}
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--
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1.8.3.1
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