SSH Tectia


ssh-sft-stage — stage and destage MVS datasets and HFS files


ssh-sft-stage(1)               SSH2              ssh-sft-stage(1)

       ssh-sft-stage  -  stage  and  destage MVS datasets and HFS

       ssh-sft-stage  [-i input_file]  [-s stage_file]   [-o out-
       put_file] [-I input_file_CCS] [-S stage_file_CCS] [-O out-
       put_file_CCS] [-f stage_file_format] [-p] [-b buffer_size]
       [-d debug_string] [-v] [-V] [-h]

       ssh-sft-stage  stages  a file or dataset, that is converts
       it into transfer format, or destages a stage file, that is
       converts  it  into  a  file or dataset. Advice strings and
       file transfer advice profiles can be used to control stag-

       The  Secure  File Transfer Protocol (SFTP), and the way in
       which it is used in common Secure  Shell  implementations,
       requires  that  a  file  to  be  transferred  is  an octet
       sequence, that the file size is known, and that it is pos-
       sible  to seek to any position in the file. Staging trans-
       forms structured MVS datasets into such a format. On  z/OS
       Unix  such  files  are  known  as Hierarchical File System
       (HFS) files.

       There are three transfer formats: line format  is  charac-
       ter-based  and  uses  the  newline  character  as a record
       delimiter, record format includes record length fields  in
       the  stored  or transferred data, and stream format stores
       records end-to-end and does  not  include  any  structural

       Input  files  and  output  files  may  be HFS files or MVS
       datasets. Output MVS datasets must be  pre-allocated  with
       complete DCB parameters.

       ssh-sft-stage  performs  coded character set (CCS) conver-
       sion when a CCS option is specified  for  both  the  stage
       file  and the MVS dataset. All the character sets known by
       the iconv() function are available. To see a list  of  the
       available  character sets, run iconv -l in the environment
       where you intend to run ssh-sft-stage.

       The SSH Tectia Server for IBM z/OS server program,  sshd2,
       uses temporary memory files as stage files. This mechanism
       can be verified with  ssh-sft-stage  by  omitting  the  -s
       option and using -i only or both the -i and -o options.

       ssh-sft-stage  has  both  a  long  and  short form for the
       options. Both are shown below - use either of the forms.

       -i, --input-file file
              Specifes the input filename to be staged.

       -s, --stage-file file
              Specifies the stage filename.

       -o, --output-file file
              Specifies the filename resulting from destaging the
              stage file.

       -I, --input-css ccs
              Specifies the CCS of the input file.

       -I, --stage-css ccs
              Specifies the CCS of the stage file.

       -O, --output-css ccs
              Specifies the CCS of the output file.

       -f, --format format
              Specifies  the  format  of  the stage file: stream,
              line, or record.

       -b, --buffer-size nnn
              Specifies the size of file buffer (in bytes).

       -p, --profile
              Enables file transfer advice profiles.

       -d, --debug string
              Enables debugging.

       -v, --verbose
              Generates verbose output.

       -V, --version
              Displays program version and exits.

       -h, --help
              Displays a short summary  of  command-line  options
              and exits.

       Dataset names

              Write  MVS dataset names with leading slashes, e.g.

              HFS file names must include at least one slash, but
              not two at the start of the name.

              Use  single  quotes  for datasets names that should
              not   be   prefixed   with   the   user's   prefix:

              Input  and  output files may also be members in PDS
              and PDSE libraries. Write the member name in paren-
              thesis.  Use quoting to prevent the shell from try-
              ing     to     interpret      the      parenthesis:

       Output datasets

              MVS output datasets must be pre-allocated. Any con-
              tent will be overwritten.

              When  destaging,  overrunning  the  dataset  record
              length  (or  block size for the U dataset organiza-
              tion) will cause the run to fail.  Overrun  can  be
              caused  by  excessive record lengths when the stage
              file format is  record  or  missing  or  improperly
              placed  newline characters when the stage file for-
              mat is line.

              For the line format, the stage file must be encoded
              in  EBCDIC  or must be converted to EBCDIC with CCS
              options. The newline character must be NL (0x15  in
              hexadecimal and 025 in octal).

              When  the  stage  file format is line, fixed length
              records are padded with blanks. When the stage file
              format  is  record, fixed length records are padded
              with binary zeros. For the stream format, the  last
              record may be padded with binary zeros.

       You must set these variables:



       When  verifying  the use of a temporary memory file as the
       staging file, add a TRAP option to the _CEE_RUNOPTS  vari-
       able. Specify TRAP(ON) to use a hiperspace memory file and
       TRAP(OFF) to use a normal memory file that uses memory  in
       same the address space where ssh-sft-stage runs.

       See  the  z/OS C/C++ Run-Time Library Reference manual for
       these two variables,  which  influence  how  ssh-sft-stage
       performs character set conversions: