cvs commit: src/lib/libcaps caps_msgbuf.c caps_pwent.c caps_struct.c caps_struct.h Makefile defs.h globaldata.c globaldata.h caps_client.c caps_misc.c caps_service.c src/test/caps decoder.c encoder.c Makefile

Matthew Dillon dillon at
Sun Mar 7 15:37:41 PST 2004

dillon      2004/03/07 15:36:45 PST

DragonFly src repository

  Modified files:
    lib/libcaps          Makefile defs.h globaldata.c globaldata.h 
    test/caps            Makefile 
  Added files:
    lib/libcaps          caps_msgbuf.c caps_pwent.c caps_struct.c 
    test/caps            decoder.c encoder.c 
  Removed files:
    lib/libcaps          caps_client.c caps_misc.c caps_service.c 
  Initial CAPS IPC structural encoding and decoding support.  Note that the
  kernel is uninvolved (other then in supplying the IPC mechanism).  After
  careful consideration I decided that XML was just too much overkill but that
  a human-readable format is still desireable.  The encoding format supports
  integers, strings, opaque data, arrays, and is extensible and structural.
  An example encoding of the struct passwd record for user 'nobody':
  Class elements include (S)tructure, (F)ield, (D)ata, (A)rray.  Data types are
  free-form numeric (stored as hex), with the source responsible for encoding
  negative numbers with a '-', and quoted opaque data (e.g. strings).  Any
  class element may recurse using {}.  Structures and Arrays always recurse.
  Unknown recursions are ignored by the decoder (for future backwards
  compatibility).  Whitespace is allowed but most non-alpha-numeric characters
  must be %-hex-escaped.
  The decoder understands simple integer types, arrays, buffers, embedded
  sub-structures, and string pointer structural elements.  It does not (yet)
  understand multi-dimensional arrays, sparse element notation, or ** pointers.
  This is a nice, compact encoding format that can be used for both packetized
  messages and persistently-connected streams.  The initial commit only supports
  full-messages, however.
  Revision  Changes    Path
  1.5       +3 -2      src/lib/libcaps/Makefile
  1.4       +3 -19     src/lib/libcaps/defs.h
  1.4       +2 -2      src/lib/libcaps/globaldata.c
  1.6       +4 -1      src/lib/libcaps/globaldata.h
  1.6       +7 -1      src/test/caps/Makefile

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