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d5b6f1df5f
This change allows parts of the daemon to be written in the OCaml programming language. I am using the ‘Main Program in C’ method along with ‘-output-obj’ to create an object file from the OCaml code / runtime, as described here: https://caml.inria.fr/pub/docs/manual-ocaml/intfc.html Furthermore, change the generator to allow individual APIs to be implemented in OCaml. This is picked by setting: impl = OCaml <ocaml_function>; The generator creates ‘do_function’ (the same one you would have to write by hand in C), with the function calling the named ‘ocaml_function’ and dealing with marshalling/unmarshalling the OCaml parameters.
42 lines
1.5 KiB
OCaml
42 lines
1.5 KiB
OCaml
(* guestfs-inspection
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* Copyright (C) 2009-2017 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*)
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open Printf
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external get_verbose_flag : unit -> bool =
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"guestfs_int_daemon_get_verbose_flag" "noalloc"
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(* When guestfsd starts up, early on (after parsing the command line
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* but not much else), it calls 'caml_startup' which runs all
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* initialization code in the OCaml modules, including this one.
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*
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* Therefore this is where we can place OCaml initialization code
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* for the daemon.
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*)
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let () =
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(* Connect the guestfsd [-v] (verbose) flag into 'verbose ()'
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* used in OCaml code to print debugging messages.
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*)
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if get_verbose_flag () then (
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Std_utils.set_verbose ();
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eprintf "OCaml daemon loaded\n%!"
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);
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(* Register the callbacks which are used to call OCaml code from C. *)
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Callbacks.init_callbacks ()
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