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Diff for /src/usr.bin/ssh/PROTOCOL between version 1.43 and 1.44

version 1.43, 2021/12/19 22:15:42 version 1.44, 2022/03/31 03:05:49
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         string          "fsync@openssh.com"          string          "fsync@openssh.com"
         string          handle          string          handle
   
 One receiving this request, a server will call fsync(handle_fd) and will  On receiving this request, a server will call fsync(handle_fd) and will
 respond with a SSH_FXP_STATUS message.  respond with a SSH_FXP_STATUS message.
   
 This extension is advertised in the SSH_FXP_VERSION hello with version  This extension is advertised in the SSH_FXP_VERSION hello with version
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 This extension is advertised in the SSH_FXP_VERSION hello with version  This extension is advertised in the SSH_FXP_VERSION hello with version
 "1".  "1".
   
   4.10. sftp: Extension request "copy-data"
   
   This request asks the server to copy data from one open file handle and
   write it to a different open file handle.  This avoids needing to transfer
   the data across the network twice (a download followed by an upload).
   
           byte            SSH_FXP_EXTENDED
           uint32          id
           string          "copy-data"
           string          read-from-handle
           uint64          read-from-offset
           uint64          read-data-length
           string          write-to-handle
           uint64          write-to-offset
   
   The server will copy read-data-length bytes starting from
   read-from-offset from the read-from-handle and write them to
   write-to-handle starting from write-to-offset, and then respond with a
   SSH_FXP_STATUS message.
   
   It's equivalent to issuing a series of SSH_FXP_READ requests on
   read-from-handle and a series of requests of SSH_FXP_WRITE on
   write-to-handle.
   
   If read-from-handle and write-to-handle are the same, the server will
   fail the request and respond with a SSH_FX_INVALID_PARAMETER message.
   
   If read-data-length is 0, then the server will read data from the
   read-from-handle until EOF is reached.
   
   This extension is advertised in the SSH_FXP_VERSION hello with version
   "1".
   
   This request is identical to the "copy-data" request documented in:
   
   https://tools.ietf.org/html/draft-ietf-secsh-filexfer-extensions-00#section-7
   
 5. Miscellaneous changes  5. Miscellaneous changes
   
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