[PATCH 0/6] pipeio: Add support for read-write pipes

[Jeremy Kerr]

This change implements read-write pipe IO, to allow fwts to send data
*to* a process, as well as the current functionality of reading from
one.

We refactor the existing read-only pipes a little, mainly to return
output data in output arguments, and use the return values as error
status (this also fixes an existing issue for fwts_pipe_read when the
child outputs no data). Then, we add functions to open, process and
close these read-write pipes.

The existing read-only pipes then become a base-case of the read-write
ones.

Regards,


Jeremy

--

Jeremy Kerr (6):
  pipeio: fix fwts_pipe_read return value when child produces no output
  pipeio: Fix error handling in fwts_pipe_exec
  pipeio: Rename fwts_pipe_open to fwts_pipe_open_ro, add fd as output
    argument
  pipeio: Add fwts_pipe_open_rw
  pipeio: Add fwts_pipe_readwrite
  pipeio: Add fwts_pipe_close2 to cleanup from fwts_open_pipe_rw.

 src/lib/include/fwts_pipeio.h |  10 +-
 src/lib/src/fwts_cpu.c        |   2 +-
 src/lib/src/fwts_devicetree.c |  10 +-
 src/lib/src/fwts_dump.c       |   4 +-
 src/lib/src/fwts_pipeio.c     | 219 +++++++++++++++++++++++++++++++++---------
 5 files changed, 188 insertions(+), 57 deletions(-)

-- 
2.5.0