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virtiofsd/passthrough_ll: Pass errno to fuse_reply_err() 

lo_copy_file_range() passes -errno to fuse_reply_err() and then fuse_reply_err()
changes it to errno again, so that subsequent fuse_send_reply_iov_nofree() catches
the wrong errno.(i.e. reports "fuse: bad error value: ...").

Make fuse_send_reply_iov_nofree() accept the correct -errno by passing errno
directly in lo_copy_file_range().

Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Eryu Guan <eguan@linux.alibaba.com>

dgilbert: Sent upstream and now Merged as aa1185e153f774f1df65
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
master
Xiao Yang 2020-01-02 11:53:12 +08:00 committed by Dr. David Alan Gilbert
parent fe4c15798a
commit a931b6861e
1 changed files with 1 additions and 1 deletions
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2
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,
res = copy_file_range(in_fd, &off_in, out_fd, &off_out, len, flags);
if (res < 0) {
fuse_reply_err(req, -errno);
fuse_reply_err(req, errno);
} else {
fuse_reply_write(req, res);
}