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libguestfs/generator/gobject.ml

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(* libguestfs
* Copyright (C) 2012 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*)
(* Please read generator/README first. *)
(* NB: This is missing support for OStringList. *)
open Printf
open Actions
open Docstrings
open Events
open Pr
open Structs
open Types
open Utils
let camel_of_name { camel_name = camel_name } = "Guestfs" ^ camel_name
let generate_gobject_proto name ?(single_line = true)
(ret, args, optargs) f =
let spacer = if single_line then " " else "\n" in
let ptr_spacer = if single_line then "" else "\n" in
(match ret with
| RErr ->
pr "gboolean%s" spacer
| RInt _ ->
pr "gint32%s" spacer
| RInt64 _ ->
pr "gint64%s" spacer
| RBool _ ->
pr "gint8%s" spacer
| RConstString _
| RConstOptString _ ->
pr "const gchar *%s" ptr_spacer
| RString _ ->
pr "gchar *%s" ptr_spacer
| RStringList _ ->
pr "gchar **%s" ptr_spacer
| RStruct (_, typ) ->
let name = camel_name_of_struct typ in
pr "Guestfs%s *%s" name ptr_spacer
| RStructList (_, typ) ->
let name = camel_name_of_struct typ in
pr "Guestfs%s **%s" name ptr_spacer
| RHashtable _ ->
pr "GHashTable *%s" ptr_spacer
| RBufferOut _ ->
pr "guint8 *%s" ptr_spacer
);
pr "guestfs_session_%s(GuestfsSession *session" name;
List.iter (
fun arg ->
pr ", ";
match arg with
| Bool n ->
pr "gboolean %s" n
| Int n ->
pr "gint32 %s" n
| Int64 n->
pr "gint64 %s" n
| String n
| Device n | Mountable n
| Pathname n
| Dev_or_Path n | Mountable_or_Path n
| OptString n
| Key n
| FileIn n
| FileOut n ->
pr "const gchar *%s" n
| StringList n
| DeviceList n ->
pr "gchar *const *%s" n
| BufferIn n ->
pr "const guint8 *%s, gsize %s_size" n n
| Pointer _ ->
failwith "gobject bindings do not support Pointer arguments"
) args;
if optargs <> [] then (
pr ", %s *optargs" (camel_of_name f)
);
(match ret with
| RBufferOut _ ->
pr ", gsize *size_r"
| _ -> ());
if f.cancellable then
pr ", GCancellable *cancellable";
pr ", GError **err";
pr ")"
let filenames =
"session" :: "tristate" ::
(* structs *)
List.map (fun { s_name = typ } -> "struct-" ^ typ) external_structs @
(* optargs *)
List.map (function { name = name } -> "optargs-" ^ name) (
List.filter (
function
| { style = _, _, (_::_) } -> true
| { style = _, _, [] } -> false
) external_functions
)
let header_start filename =
generate_header CStyle GPLv2plus;
let guard = Str.global_replace (Str.regexp "-") "_" filename in
let guard = "GUESTFS_GOBJECT_" ^ String.uppercase guard ^ "_H__" in
pr "#ifndef %s\n" guard;
pr "#define %s\n" guard;
pr "
#include <glib-object.h>
#include <gio/gio.h>
#include <guestfs-gobject.h>
G_BEGIN_DECLS
"
and header_end filename =
let guard = Str.global_replace (Str.regexp "-") "_" filename in
let guard = "GUESTFS_GOBJECT_" ^ String.uppercase guard ^ "_H__" in
pr "
G_END_DECLS
#endif /* %s */
" guard
let source_start ?title ?shortdesc ?longdesc filename =
generate_header CStyle GPLv2plus;
pr "#include <config.h>\n\n";
pr "#include \"guestfs-gobject.h\"\n\n";
pr "/**\n";
pr " * SECTION:%s\n" filename;
(match title with
| Some title ->
pr " * @title: %s\n" title
| _ -> ());
(match shortdesc with
| Some desc ->
pr " * @short_description: %s\n" desc;
| _ -> ());
pr " * @include: guestfs-gobject.h\n";
(match longdesc with
| Some desc ->
pr " *\n";
pr " %s\n" desc
| _ -> ());
pr " */\n"
let generate_gobject_makefile () =
generate_header HashStyle GPLv2plus;
let headers =
List.map
(function n -> sprintf "include/guestfs-gobject/%s.h" n) filenames
in
let sources =
List.map (function n -> sprintf "src/%s.c" n) filenames
in
pr "guestfs_gobject_headers= \\\n include/guestfs-gobject.h \\\n %s\n\n"
(String.concat " \\\n " headers);
pr "guestfs_gobject_sources= \\\n %s\n" (String.concat " \\\n " sources)
let generate_gobject_header () =
generate_header CStyle GPLv2plus;
List.iter
(function f -> pr "#include <guestfs-gobject/%s.h>\n" f)
filenames
let generate_gobject_doc_title () =
pr
"<?xml version=\"1.0\"?>
<!DOCTYPE refentry PUBLIC \"-//OASIS//DTD DocBook XML V4.3//EN\"
\"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd\"
[
<!ENTITY %% local.common.attrib \"xmlns:xi CDATA #FIXED 'http://www.w3.org/2003/XInclude'\">
]>
<chapter>
<title>Libguestfs GObject Bindings</title>
";
List.iter (
function n -> pr " <xi:include href=\"xml/%s.xml\"/>\n" n
) filenames;
pr "</chapter>\n"
let generate_gobject_struct_header filename typ cols () =
header_start filename;
let camel = camel_name_of_struct typ in
pr "\n";
pr "/**\n";
pr " * Guestfs%s:\n" camel;
List.iter (
function
| n, FChar ->
pr " * @%s: A character\n" n
| n, FUInt32 ->
pr " * @%s: An unsigned 32-bit integer\n" n
| n, FInt32 ->
pr " * @%s: A signed 32-bit integer\n" n
| n, (FUInt64|FBytes) ->
pr " * @%s: An unsigned 64-bit integer\n" n
| n, FInt64 ->
pr " * @%s: A signed 64-bit integer\n" n
| n, FString ->
pr " * @%s: A NULL-terminated string\n" n
| n, FBuffer ->
pr " * @%s: A GByteArray\n" n
| n, FUUID ->
pr " * @%s: A 32 byte UUID. Note that this is not NULL-terminated\n" n
| n, FOptPercent ->
pr " * @%s: A floating point number. A value between 0 and 100 " n;
pr "represents a percentage. A value of -1 represents 'not present'\n"
) cols;
pr " */\n";
pr "typedef struct _Guestfs%s Guestfs%s;\n" camel camel;
pr "struct _Guestfs%s {\n" camel;
List.iter (
function
| n, FChar ->
pr " gchar %s;\n" n
| n, FUInt32 ->
pr " guint32 %s;\n" n
| n, FInt32 ->
pr " gint32 %s;\n" n
| n, (FUInt64|FBytes) ->
pr " guint64 %s;\n" n
| n, FInt64 ->
pr " gint64 %s;\n" n
| n, FString ->
pr " gchar *%s;\n" n
| n, FBuffer ->
pr " GByteArray *%s;\n" n
| n, FUUID ->
pr " /* The next field is NOT nul-terminated, be careful when printing it: */\n";
pr " gchar %s[32];\n" n
| n, FOptPercent ->
pr " /* The next field is [0..100] or -1 meaning 'not present': */\n";
pr " gfloat %s;\n" n
) cols;
pr "};\n";
pr "GType guestfs_%s_get_type(void);\n" typ;
header_end filename
let generate_gobject_struct_source filename typ cols () =
let title = "Guestfs" ^ camel_name_of_struct typ in
source_start ~title filename;
let name = "guestfs_" ^ typ in
let camel_name = "Guestfs" ^ camel_name_of_struct typ in
pr "\n";
pr "static %s *\n" camel_name;
pr "%s_copy(%s *src)\n" name camel_name;
pr "{\n";
pr " return g_slice_dup(%s, src);\n" camel_name;
pr "}\n\n";
pr "static void\n";
pr "%s_free(%s *src)\n" name camel_name;
pr "{\n";
pr " g_slice_free(%s, src);\n" camel_name;
pr "}\n\n";
pr "G_DEFINE_BOXED_TYPE(%s, %s, %s_copy, %s_free)\n"
camel_name name name name
let generate_gobject_optargs_header filename name optargs f () =
header_start filename;
let uc_name = String.uppercase name in
let camel_name = camel_of_name f in
let type_define = "GUESTFS_TYPE_" ^ uc_name in
pr "\n";
pr "#define %s " type_define;
pr "(guestfs_%s_get_type())\n" name;
pr "#define GUESTFS_%s(obj) " uc_name;
pr "(G_TYPE_CHECK_INSTANCE_CAST((obj), %s, %s))\n" type_define camel_name;
pr "#define GUESTFS_%s_CLASS(klass) " uc_name;
pr "(G_TYPE_CHECK_CLASS_CAST((klass), %s, %sClass))\n" type_define camel_name;
pr "#define GUESTFS_IS_%s(obj) " uc_name;
pr "(G_TYPE_CHECK_INSTANCE_TYPE((klass), %s))\n" type_define;
pr "#define GUESTFS_IS_%s_CLASS(klass) " uc_name;
pr "(G_TYPE_CHECK_CLASS_TYPE((klass), %s))\n" type_define;
pr "#define GUESTFS_%s_GET_CLASS(obj) " uc_name;
pr "(G_TYPE_INSTANCE_GET_CLASS((obj), %s, %sClass))\n" type_define camel_name;
pr "\n";
pr "typedef struct _%sPrivate %sPrivate;\n" camel_name camel_name;
pr "\n";
pr "/**\n";
pr " * %s:\n" camel_name;
pr " *\n";
pr " * An object encapsulating optional arguments for guestfs_session_%s.\n" name;
pr " */\n";
pr "typedef struct _%s %s;\n" camel_name camel_name;
pr "struct _%s {\n" camel_name;
pr " GObject parent;\n";
pr " %sPrivate *priv;\n" camel_name;
pr "};\n\n";
pr "/**\n";
pr " * %sClass:\n" camel_name;
pr " * @parent_class: The superclass of %sClass\n" camel_name;
pr " *\n";
pr " * A class metadata object for %s.\n" camel_name;
pr " */\n";
pr "typedef struct _%sClass %sClass;\n" camel_name camel_name;
pr "struct _%sClass {\n" camel_name;
pr " GObjectClass parent_class;\n";
pr "};\n\n";
pr "GType guestfs_%s_get_type(void);\n" name;
pr "%s *guestfs_%s_new(void);\n" camel_name name;
header_end filename
let generate_gobject_optargs_source filename name optargs f () =
let desc =
"An object encapsulating optional arguments for guestfs_session_" ^ name in
source_start ~shortdesc:desc ~longdesc:desc filename;
let uc_name = String.uppercase name in
let camel_name = camel_of_name f in
let type_define = "GUESTFS_TYPE_" ^ uc_name in
pr "\n";
pr "#include <string.h>\n\n";
pr "#define GUESTFS_%s_GET_PRIVATE(obj) " uc_name;
pr "(G_TYPE_INSTANCE_GET_PRIVATE((obj), %s, %sPrivate))\n\n"
type_define camel_name;
pr "struct _%sPrivate {\n" camel_name;
List.iter (
function
| OBool n -> pr " GuestfsTristate %s;\n" n
| OInt n -> pr " gint %s;\n" n
| OInt64 n -> pr " gint64 %s;\n" n
| OString n -> pr " gchar *%s;\n" n
| OStringList _ -> pr " /* OStringList not implemented yet */\n"
) optargs;
pr "};\n\n";
pr "G_DEFINE_TYPE(%s, guestfs_%s, G_TYPE_OBJECT);\n\n" camel_name name;
pr "enum {\n";
pr " PROP_GUESTFS_%s_PROP0" uc_name;
List.iter (
fun optargt ->
let uc_optname = String.uppercase (name_of_optargt optargt) in
pr ",\n PROP_GUESTFS_%s_%s" uc_name uc_optname;
) optargs;
pr "\n};\n\n";
pr "static void\nguestfs_%s_set_property" name;
pr "(GObject *object, guint property_id, const GValue *value, GParamSpec *pspec)\n";
pr "{\n";
pr " %s *self = GUESTFS_%s(object);\n" camel_name uc_name;
pr " %sPrivate *priv = self->priv;\n\n" camel_name;
pr " switch (property_id) {\n";
List.iter (
function OStringList _ -> () (* XXX *)
| optargt ->
let optname = name_of_optargt optargt in
let uc_optname = String.uppercase optname in
pr " case PROP_GUESTFS_%s_%s:\n" uc_name uc_optname;
(match optargt with
| OString n ->
pr " g_free(priv->%s);\n" n;
| OBool _ | OInt _ | OInt64 _ -> ()
| OStringList _ -> () (* XXX *));
(match optargt with
| OBool n -> pr " priv->%s = g_value_get_enum (value);\n" n
| OInt n -> pr " priv->%s = g_value_get_int (value);\n" n
| OInt64 n -> pr " priv->%s = g_value_get_int64 (value);\n" n
| OString n -> pr " priv->%s = g_value_dup_string (value);\n" n
| OStringList _ -> ()
);
pr " break;\n\n";
) optargs;
pr " default:\n";
pr " /* Invalid property */\n";
pr " G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);\n";
pr " }\n";
pr "}\n\n";
pr "static void\nguestfs_%s_get_property" name;
pr "(GObject *object, guint property_id, GValue *value, GParamSpec *pspec)\n";
pr "{\n";
pr " %s *self = GUESTFS_%s(object);\n" camel_name uc_name;
pr " %sPrivate *priv = self->priv;\n\n" camel_name;
pr " switch (property_id) {\n";
List.iter (
function OStringList _ -> () (* XXX *)
| optargt ->
let optname = name_of_optargt optargt in
let uc_optname = String.uppercase optname in
pr " case PROP_GUESTFS_%s_%s:\n" uc_name uc_optname;
let set_value_func = match optargt with
| OBool _ -> "enum"
| OInt _ -> "int"
| OInt64 _ -> "int64"
| OString _ -> "string"
| OStringList _ -> "" (* XXX *)
in
pr " g_value_set_%s(value, priv->%s);\n" set_value_func optname;
pr " break;\n\n";
) optargs;
pr " default:\n";
pr " /* Invalid property */\n";
pr " G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);\n";
pr " }\n";
pr "}\n\n";
pr "static void\nguestfs_%s_finalize(GObject *object)\n" name;
pr "{\n";
pr " %s *self = GUESTFS_%s(object);\n" camel_name uc_name;
pr " %sPrivate *priv = self->priv;\n\n" camel_name;
List.iter (
function
| OString n ->
pr " g_free(priv->%s);\n" n
| OStringList n -> () (* XXX *)
| OBool _ | OInt _ | OInt64 _ -> ()
) optargs;
pr "\n";
pr " G_OBJECT_CLASS(guestfs_%s_parent_class)->finalize(object);\n" name;
pr "}\n\n";
pr "static void\nguestfs_%s_class_init(%sClass *klass)\n" name camel_name;
pr "{\n";
pr " GObjectClass *object_class = G_OBJECT_CLASS(klass);\n";
pr " object_class->set_property = guestfs_%s_set_property;\n" name;
pr " object_class->get_property = guestfs_%s_get_property;\n\n" name;
List.iter (
function OStringList _ -> () (* XXX *)
| optargt ->
let optname = name_of_optargt optargt in
let type_spec, type_init, type_desc =
match optargt with
| OBool n ->
"enum", "GUESTFS_TYPE_TRISTATE, GUESTFS_TRISTATE_NONE", "A boolean."
| OInt n ->
"int", "G_MININT32, G_MAXINT32, -1", "A 32-bit integer."
| OInt64 n ->
"int64", "G_MININT64, G_MAXINT64, -1", "A 64-bit integer."
| OString n ->
"string", "NULL", "A string."
| OStringList n -> "", "", "" (* XXX *)
in
pr " /**\n";
pr " * %s:%s:\n" camel_name optname;
pr " *\n";
pr " * %s\n" type_desc;
pr " */\n";
pr " g_object_class_install_property(\n";
pr " object_class,\n";
pr " PROP_GUESTFS_%s_%s,\n" uc_name (String.uppercase optname);
pr " g_param_spec_%s(\n" type_spec;
pr " \"%s\",\n" optname;
pr " \"%s\",\n" optname;
pr " \"%s\",\n" type_desc;
pr " %s,\n" type_init;
pr " G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS\n";
pr " )\n";
pr " );\n\n";
) optargs;
pr " object_class->finalize = guestfs_%s_finalize;\n" name;
pr " g_type_class_add_private(klass, sizeof(%sPrivate));\n" camel_name;
pr "}\n\n";
pr "static void\nguestfs_%s_init(%s *o)\n" name camel_name;
pr "{\n";
pr " o->priv = GUESTFS_%s_GET_PRIVATE(o);\n" uc_name;
pr " /* XXX: Find out if gobject already zeroes private structs */\n";
pr " memset(o->priv, 0, sizeof(%sPrivate));\n" camel_name;
pr "}\n\n";
pr "/**\n";
pr " * guestfs_%s_new:\n" name;
pr " *\n";
pr " * Create a new %s object\n" camel_name;
pr " *\n";
pr " * Returns: (transfer full): a new %s object\n" camel_name;
pr " */\n";
pr "%s *\n" camel_name;
pr "guestfs_%s_new(void)\n" name;
pr "{\n";
pr " return GUESTFS_%s(g_object_new(%s, NULL));\n" uc_name type_define;
pr "}\n"
let generate_gobject_tristate_header () =
let filename = "tristate" in
header_start filename;
pr "
/**
* GuestfsTristate:
* @GUESTFS_TRISTATE_FALSE: False
* @GUESTFS_TRISTATE_TRUE: True
* @GUESTFS_TRISTATE_NONE: Unset
*
* An object representing a tristate: i.e. true, false, or unset. If a language
* binding has a native concept of true and false which also correspond to the
* integer values 1 and 0 respectively, these will also correspond to
* GUESTFS_TRISTATE_TRUE and GUESTFS_TRISTATE_FALSE.
*/
typedef enum
{
GUESTFS_TRISTATE_FALSE,
GUESTFS_TRISTATE_TRUE,
GUESTFS_TRISTATE_NONE
} GuestfsTristate;
GType guestfs_tristate_get_type(void);
#define GUESTFS_TYPE_TRISTATE (guestfs_tristate_get_type())
";
header_end filename
let generate_gobject_tristate_source () =
let filename = "tristate" in
let title = "GuestfsTristate" in
let shortdesc = "An object representing a tristate value" in
source_start ~title ~shortdesc filename;
pr "
GType
guestfs_tristate_get_type(void)
{
static GType etype = 0;
if (etype == 0) {
static const GEnumValue values[] = {
{ GUESTFS_TRISTATE_FALSE, \"GUESTFS_TRISTATE_FALSE\", \"false\" },
{ GUESTFS_TRISTATE_TRUE, \"GUESTFS_TRISTATE_TRUE\", \"true\" },
{ GUESTFS_TRISTATE_NONE, \"GUESTFS_TRISTATE_NONE\", \"none\" },
{ 0, NULL, NULL }
};
etype = g_enum_register_static(\"GuestfsTristate\", values);
}
return etype;
}
"
let generate_gobject_session_header () =
let filename = "session" in
header_start filename;
pr "
/* GuestfsSessionEvent */
/**
* GuestfsSessionEvent:
";
List.iter (
fun (name, _) ->
pr " * @GUESTFS_SESSION_EVENT_%s: The %s event\n"
(String.uppercase name) name;
) events;
pr " *
* For more detail on libguestfs events, see \"SETTING CALLBACKS TO HANDLE
* EVENTS\" in guestfs(3).
*/
typedef enum {";
List.iter (
fun (name, _) ->
pr "\n GUESTFS_SESSION_EVENT_%s," (String.uppercase name);
) events;
pr "
} GuestfsSessionEvent;
GType guestfs_session_event_get_type(void);
#define GUESTFS_TYPE_SESSION_EVENT (guestfs_session_event_get_type())
/* GuestfsSessionEventParams */
/**
* GuestfsSessionEventParams:
* @event: The event
* @flags: Unused
* @buf: A message buffer. This buffer can contain arbitrary 8 bit data,
* including NUL bytes
* @array: An array of 64-bit unsigned integers
* @array_len: The length of @array
*/
typedef struct _GuestfsSessionEventParams GuestfsSessionEventParams;
struct _GuestfsSessionEventParams {
GuestfsSessionEvent event;
guint flags;
GByteArray *buf;
/* The libguestfs array has no fixed length, although it is currently only
* ever empty or length 4. We fix the length of the array here as there is
* currently no way for an arbitrary length array to be introspected in a
* boxed object.
*/
guint64 array[16];
size_t array_len;
};
GType guestfs_session_event_params_get_type(void);
/* GuestfsSession object definition */
#define GUESTFS_TYPE_SESSION (guestfs_session_get_type())
#define GUESTFS_SESSION(obj) (G_TYPE_CHECK_INSTANCE_CAST ( \
(obj), \
GUESTFS_TYPE_SESSION, \
GuestfsSession))
#define GUESTFS_SESSION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ( \
(klass), \
GUESTFS_TYPE_SESSION, \
GuestfsSessionClass))
#define GUESTFS_IS_SESSION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ( \
(obj), \
GUESTFS_TYPE_SESSION))
#define GUESTFS_IS_SESSION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ( \
(klass), \
GUESTFS_TYPE_SESSION))
#define GUESTFS_SESSION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ( \
(obj), \
GUESTFS_TYPE_SESSION, \
GuestfsSessionClass))
typedef struct _GuestfsSessionPrivate GuestfsSessionPrivate;
/**
* GuestfsSession:
*
* A libguestfs session, encapsulating a single libguestfs handle.
*/
typedef struct _GuestfsSession GuestfsSession;
struct _GuestfsSession
{
GObject parent;
GuestfsSessionPrivate *priv;
};
/**
* GuestfsSessionClass:
* @parent_class: The superclass of GuestfsSession
*
* A class metadata object for GuestfsSession.
*/
typedef struct _GuestfsSessionClass GuestfsSessionClass;
struct _GuestfsSessionClass
{
GObjectClass parent_class;
};
GType guestfs_session_get_type(void);
GuestfsSession *guestfs_session_new(void);
gboolean guestfs_session_close(GuestfsSession *session, GError **err);
";
List.iter (
fun ({ name = name; style = style } as f) ->
generate_gobject_proto name style f;
pr ";\n";
) external_functions;
header_end filename
let generate_gobject_session_source () =
let filename = "session" in
let shortdesc = "A libguestfs session" in
source_start ~shortdesc filename;
pr "
#include <glib.h>
#include <glib-object.h>
#include <guestfs.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
/* Error quark */
#define GUESTFS_ERROR guestfs_error_quark()
static GQuark
guestfs_error_quark(void)
{
return g_quark_from_static_string(\"guestfs\");
}
/* Cancellation handler */
static void
cancelled_handler(gpointer data)
{
guestfs_h *g = (guestfs_h *)data;
guestfs_user_cancel(g);
}
/* GuestfsSessionEventParams */
static GuestfsSessionEventParams *
guestfs_session_event_params_copy(GuestfsSessionEventParams *src)
{
return g_slice_dup(GuestfsSessionEventParams, src);
}
static void
guestfs_session_event_params_free(GuestfsSessionEventParams *src)
{
g_slice_free(GuestfsSessionEventParams, src);
}
G_DEFINE_BOXED_TYPE(GuestfsSessionEventParams,
guestfs_session_event_params,
guestfs_session_event_params_copy,
guestfs_session_event_params_free)
/* Event callback */
";
pr "static guint signals[%i] = { 0 };\n" (List.length events);
pr "
static GuestfsSessionEvent
guestfs_session_event_from_guestfs_event(uint64_t event)
{
switch(event) {";
List.iter (
fun (name, _) ->
let enum_name = "GUESTFS_SESSION_EVENT_" ^ String.uppercase name in
let guestfs_name = "GUESTFS_EVENT_" ^ String.uppercase name in
pr "\n case %s: return %s;" guestfs_name enum_name;
) events;
pr "
}
g_warning(\"guestfs_session_event_from_guestfs_event: invalid event %%lu\",
event);
return UINT32_MAX;
}
static void
event_callback(guestfs_h *g, void *opaque,
uint64_t event, int event_handle,
int flags,
const char *buf, size_t buf_len,
const uint64_t *array, size_t array_len)
{
GuestfsSessionEventParams *params = g_slice_new0(GuestfsSessionEventParams);
params->event = guestfs_session_event_from_guestfs_event(event);
params->flags = flags;
params->buf = g_byte_array_sized_new(buf_len);
g_byte_array_append(params->buf, buf, buf_len);
for(size_t i = 0; i < array_len && i < 4; i++) {
if(array_len > 4) {
array_len = 4;
}
memcpy(params->array, array, sizeof(array[0]) * array_len);
}
params->array_len = array_len;
GuestfsSession *session = (GuestfsSession *) opaque;
g_signal_emit(session, signals[params->event], 0, params);
guestfs_session_event_params_free(params);
}
/* GuestfsSessionEvent */
GType
guestfs_session_event_get_type(void)
{
static GType etype = 0;
if (etype == 0) {
static const GEnumValue values[] = {";
List.iter (
fun (name, _) ->
let enum_name = "GUESTFS_SESSION_EVENT_" ^ String.uppercase name in
pr "\n { %s, \"%s\", \"%s\" }," enum_name enum_name name
) events;
pr "
};
etype = g_enum_register_static(\"GuestfsSessionEvent\", values);
}
return etype;
}
/* GuestfsSession */
#define GUESTFS_SESSION_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ( \
(obj), \
GUESTFS_TYPE_SESSION, \
GuestfsSessionPrivate))
struct _GuestfsSessionPrivate
{
guestfs_h *g;
int event_handle;
};
G_DEFINE_TYPE(GuestfsSession, guestfs_session, G_TYPE_OBJECT);
static void
guestfs_session_finalize(GObject *object)
{
GuestfsSession *session = GUESTFS_SESSION(object);
GuestfsSessionPrivate *priv = session->priv;
if (priv->g) guestfs_close(priv->g);
G_OBJECT_CLASS(guestfs_session_parent_class)->finalize(object);
}
static void
guestfs_session_class_init(GuestfsSessionClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
object_class->finalize = guestfs_session_finalize;
g_type_class_add_private(klass, sizeof(GuestfsSessionPrivate));";
List.iter (
fun (name, _) ->
pr "\n\n";
pr " /**\n";
pr " * GuestfsSession::%s:\n" name;
pr " * @session: The session which emitted the signal\n";
pr " * @params: An object containing event parameters\n";
pr " *\n";
pr " * See \"SETTING CALLBACKS TO HANDLE EVENTS\" in guestfs(3) for\n";
pr " * more details about this event.\n";
pr " */\n";
pr " signals[GUESTFS_SESSION_EVENT_%s] =\n" (String.uppercase name);
pr " g_signal_new(g_intern_static_string(\"%s\"),\n" name;
pr " G_OBJECT_CLASS_TYPE(object_class),\n";
pr " G_SIGNAL_RUN_LAST,\n";
pr " 0,\n";
pr " NULL, NULL,\n";
pr " NULL,\n";
pr " G_TYPE_NONE,\n";
pr " 1, guestfs_session_event_params_get_type());";
) events;
pr "
}
static void
guestfs_session_init(GuestfsSession *session)
{
session->priv = GUESTFS_SESSION_GET_PRIVATE(session);
session->priv->g = guestfs_create();
guestfs_h *g = session->priv->g;
session->priv->event_handle =
guestfs_set_event_callback(g, event_callback, GUESTFS_EVENT_ALL,
0, session);
}
/**
* guestfs_session_new:
*
* Create a new libguestfs session.
*
* Returns: (transfer full): a new guestfs session object
*/
GuestfsSession *
guestfs_session_new(void)
{
return GUESTFS_SESSION(g_object_new(GUESTFS_TYPE_SESSION, NULL));
}
/**
* guestfs_session_close:
* @session: (transfer none): A GuestfsSession object
* @err: A GError object to receive any generated errors
*
* Close a libguestfs session.
*
* Returns: true on success, false on error
*/
gboolean
guestfs_session_close(GuestfsSession *session, GError **err)
{
guestfs_h *g = session->priv->g;
if (g == NULL) {
g_set_error_literal(err, GUESTFS_ERROR, 0, \"session is already closed\");
return FALSE;
}
guestfs_close(g);
session->priv->g = NULL;
return TRUE;
}";
let urls = Str.regexp "L<\\(https?\\)://\\([^>]*\\)>" in
let bz = Str.regexp "RHBZ#\\([0-9]+\\)" in
let cve = Str.regexp "\\(\\s\\)\\(CVE-[0-9]+-[0-9]+\\)" in
let api_crossref = Str.regexp "C<guestfs_\\([-_0-9a-zA-Z]+\\)>" in
let nonapi_crossref = Str.regexp "C<\\([-_0-9a-zA-Z]+\\)>" in
let escaped = Str.regexp "E<\\([0-9a-zA-Z]+\\)>" in
let literal = Str.regexp "\\(^\\|\n\\)[ \t]+\\([^\n]*\\)\\(\n\\|$\\)" in
List.iter (
fun ({ name = name; style = (ret, args, optargs as style);
cancellable = cancellable; c_function = c_function;
c_optarg_prefix = c_optarg_prefix;
shortdesc = shortdesc; longdesc = longdesc } as f) ->
pr "\n";
let longdesc = Str.global_substitute urls (
fun s ->
let scheme = Str.matched_group 1 s in
let url = Str.matched_group 2 s in
(* The spaces below are deliberate: they give pod2text somewhere to
split that isn't the middle of a URL. *)
"<ulink url='" ^ scheme ^ "://" ^ url ^
"'> http://" ^ url ^ " </ulink>"
) longdesc in
let longdesc = Str.global_substitute bz (
fun s ->
let bz = Str.matched_group 1 s in
(* The spaces below are deliberate: they give pod2text somewhere to
split that isn't the middle of a URL. *)
"<ulink url='https://bugzilla.redhat.com/show_bug.cgi?id=" ^
bz ^ "'> RHBZ&num;" ^ bz ^ " </ulink>"
) longdesc in
let longdesc = Str.global_substitute cve (
fun s ->
let space_lead = Str.matched_group 1 s in
let cve = Str.matched_group 2 s in
(* The spaces below are deliberate: they give pod2text somewhere to
split that isn't the middle of a URL. *)
space_lead ^
"<ulink url='https://cve.mitre.org/cgi-bin/cvename.cgi?name=" ^
cve ^ "'> " ^ cve ^ " </ulink>"
) longdesc in
let longdesc = Str.global_substitute api_crossref (
fun s ->
"guestfs_session_" ^ Str.matched_group 1 s ^ "()"
) longdesc in
let longdesc = Str.global_substitute nonapi_crossref (
fun s ->
"@" ^ Str.matched_group 1 s
) longdesc in
let longdesc = Str.global_substitute escaped (
fun s ->
"&" ^ Str.matched_group 1 s ^ ";"
) longdesc in
let longdesc = Str.global_substitute literal (
fun s ->
"\n <![CDATA[" ^ Str.matched_group 2 s ^ "]]>\n"
) longdesc in
let doc = pod2text ~width:76 name longdesc in
let doc = String.concat "\n * " doc in
let camel_name = camel_of_name f in
let is_RBufferOut = match ret with RBufferOut _ -> true | _ -> false in
let gobject_error_return = match ret with
| RErr ->
"FALSE"
| RInt _ | RInt64 _ | RBool _ ->
"-1"
| RConstString _ | RString _ | RStringList _ | RHashtable _
| RBufferOut _ | RStruct _ | RStructList _ ->
"NULL"
| RConstOptString _ ->
"NULL" (* NULL is a valid return for RConstOptString. Error is
indicated by also setting *err to a non-NULL value *)
in
(* The comment header, including GI annotations for arguments and the
return value *)
pr "/**\n";
pr " * guestfs_session_%s:\n" name;
pr " * @session: (transfer none): A GuestfsSession object\n";
List.iter (
fun argt ->
pr " * @%s:" (name_of_argt argt);
(match argt with
| Bool _ ->
pr " (type gboolean):"
| Int _ ->
pr " (type gint32):"
| Int64 _ ->
pr " (type gint64):"
| String _ | Key _ ->
pr " (transfer none) (type utf8):"
| OptString _ ->
pr " (transfer none) (type utf8) (allow-none):"
| Device _ | Mountable _ | Pathname _
| Dev_or_Path _ | Mountable_or_Path _
| FileIn _ | FileOut _ ->
pr " (transfer none) (type filename):"
| StringList _ ->
pr " (transfer none) (array zero-terminated=1) (element-type utf8): an array of strings"
| DeviceList _ ->
pr " (transfer none) (array zero-terminated=1) (element-type filename): an array of strings"
| BufferIn n ->
pr " (transfer none) (array length=%s_size) (element-type guint8): an array of binary data\n" n;
pr " * @%s_size: The size of %s, in bytes" n n;
| Pointer _ ->
failwith "gobject bindings do not support Pointer arguments"
);
pr "\n";
) args;
if optargs <> [] then
pr " * @optargs: (transfer none) (allow-none): a %s containing optional arguments\n" camel_name;
(match ret with
| RBufferOut _ ->
pr " * @size_r: The size of the returned buffer, in bytes\n";
| _ -> ());
if cancellable then (
pr " * @cancellable: A GCancellable object\n";
);
pr " * @err: A GError object to receive any generated errors\n";
pr " *\n";
pr " * %s\n" shortdesc;
pr " *\n";
pr " * %s\n" doc;
pr " * Returns: ";
(match ret with
| RErr ->
pr "true on success, false on error"
| RInt _ | RInt64 _ | RBool _ ->
pr "the returned value, or -1 on error"
| RConstString _ ->
pr "(transfer none): the returned string, or NULL on error"
| RConstOptString _ ->
pr "(transfer none): the returned string. Note that NULL does not indicate error"
| RString _ ->
pr "(transfer full): the returned string, or NULL on error"
| RStringList _ ->
pr "(transfer full) (array zero-terminated=1) (element-type utf8): an array of returned strings, or NULL on error"
| RHashtable _ ->
pr "(transfer full) (element-type utf8 utf8): a GHashTable of results, or NULL on error"
| RBufferOut _ ->
pr "(transfer full) (array length=size_r) (element-type guint8): an array of binary data, or NULL on error"
| RStruct (_, typ) ->
let name = camel_name_of_struct typ in
pr "(transfer full): a %s object, or NULL on error" name
| RStructList (_, typ) ->
let name = camel_name_of_struct typ in
pr "(transfer full) (array zero-terminated=1) (element-type Guestfs%s): an array of %s objects, or NULL on error" name name
);
pr "\n";
pr " */\n";
(* The function body *)
generate_gobject_proto ~single_line:false name style f;
pr "\n{\n";
if cancellable then (
pr " /* Check we haven't already been cancelled */\n";
pr " if (g_cancellable_set_error_if_cancelled (cancellable, err))\n";
pr " return %s;\n\n" gobject_error_return;
);
(* Get the guestfs handle, and ensure it isn't closed *)
pr " guestfs_h *g = session->priv->g;\n";
pr " if (g == NULL) {\n";
pr " g_set_error(err, GUESTFS_ERROR, 0,\n";
pr " \"attempt to call %%s after the session has been closed\",\n";
pr " \"%s\");\n" name;
pr " return %s;\n" gobject_error_return;
pr " }\n\n";
(* Optargs *)
if optargs <> [] then (
pr " struct %s argv;\n" c_function;
pr " struct %s *argvp = NULL;\n\n" c_function;
pr " if (optargs) {\n";
pr " argv.bitmask = 0;\n\n";
let set_property name typ v_typ get_typ unset =
let uc_name = String.uppercase name in
pr " GValue %s_v = {0, };\n" name;
pr " g_value_init(&%s_v, %s);\n" name v_typ;
pr " g_object_get_property(G_OBJECT(optargs), \"%s\", &%s_v);\n" name name;
pr " %s%s = g_value_get_%s(&%s_v);\n" typ name get_typ name;
pr " if (%s != %s) {\n" name unset;
pr " argv.bitmask |= %s_%s_BITMASK;\n" c_optarg_prefix uc_name;
pr " argv.%s = %s;\n" name name;
pr " }\n"
in
List.iter (
function
| OBool n ->
set_property n "GuestfsTristate " "GUESTFS_TYPE_TRISTATE" "enum" "GUESTFS_TRISTATE_NONE"
| OInt n ->
set_property n "gint32 " "G_TYPE_INT" "int" "-1"
| OInt64 n ->
set_property n "gint64 " "G_TYPE_INT64" "int64" "-1"
| OString n ->
set_property n "const gchar *" "G_TYPE_STRING" "string" "NULL"
| OStringList n ->
() (* XXX *)
) optargs;
pr " argvp = &argv;\n";
pr " }\n"
);
(* libguestfs call *)
if cancellable then (
pr " gulong id = 0;\n";
pr " if (cancellable) {\n";
pr " id = g_cancellable_connect(cancellable,\n";
pr " G_CALLBACK(cancelled_handler),\n";
pr " g, NULL);\n";
pr " }\n\n";
);
pr " ";
(match ret with
| RErr | RInt _ | RBool _ ->
pr "int "
| RInt64 _ ->
pr "int64_t "
| RConstString _ | RConstOptString _ ->
pr "const char *"
| RString _ | RBufferOut _ ->
pr "char *"
| RStringList _ | RHashtable _ ->
pr "char **"
| RStruct (_, typ) ->
pr "struct guestfs_%s *" typ
| RStructList (_, typ) ->
pr "struct guestfs_%s_list *" typ
);
pr "ret = %s (g" c_function;
List.iter (
fun argt ->
pr ", ";
match argt with
| BufferIn n ->
pr "%s, %s_size" n n
| Bool n | Int n | Int64 n | String n | Device n | Mountable n
| Pathname n | Dev_or_Path n | Mountable_or_Path n
| OptString n | StringList n
| DeviceList n | Key n | FileIn n | FileOut n ->
pr "%s" n
| Pointer _ ->
failwith "gobject bindings do not support Pointer arguments"
) args;
if is_RBufferOut then pr ", size_r";
if optargs <> [] then pr ", argvp";
pr ");\n";
if cancellable then
pr " g_cancellable_disconnect(cancellable, id);\n";
(* Check return, throw error if necessary, marshall return value *)
(match errcode_of_ret ret with
| `CannotReturnError -> ()
| _ ->
pr " if (ret == %s) {\n"
(match errcode_of_ret ret with
| `CannotReturnError -> assert false
| `ErrorIsMinusOne -> "-1"
| `ErrorIsNULL -> "NULL");
pr " g_set_error_literal(err, GUESTFS_ERROR, 0, guestfs_last_error(g));\n";
pr " return %s;\n" gobject_error_return;
pr " }\n";
);
pr "\n";
let gen_copy_struct indent src dst typ =
List.iter (
function
| n, (FChar|FUInt32|FInt32|FUInt64|FBytes|FInt64|FOptPercent) ->
pr "%s%s%s = %s%s;\n" indent dst n src n
| n, FUUID ->
pr "%sif (%s%s) memcpy(%s%s, %s%s, sizeof(%s%s));\n"
indent src n dst n src n dst n
| n, FString ->
pr "%sif (%s%s) %s%s = g_strdup(%s%s);\n"
indent src n dst n src n
| n, FBuffer ->
pr "%sif (%s%s) {\n" indent src n;
pr "%s %s%s = g_byte_array_sized_new(%s%s_len);\n"
indent dst n src n;
pr "%s g_byte_array_append(%s%s, %s%s, %s%s_len);\n"
indent dst n src n src n;
pr "%s}\n" indent
) (cols_of_struct typ)
in
(match ret with
| RErr ->
pr " return TRUE;\n"
| RInt _ | RInt64 _ | RBool _
| RConstString _ | RConstOptString _
| RString _ | RStringList _
| RBufferOut _ ->
pr " return ret;\n"
| RHashtable _ ->
pr " GHashTable *h = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);\n";
pr " char **i = ret;\n";
pr " while (*i) {\n";
pr " char *key = *i; i++;\n";
pr " char *value = *i; i++;\n";
pr " g_hash_table_insert(h, key, value);\n";
pr " };\n";
pr " g_free(ret);\n";
pr " return h;\n"
| RStruct (_, typ) ->
let struct_name = "Guestfs" ^ camel_name_of_struct typ in
pr " %s *s = g_slice_new0(%s);\n" struct_name struct_name;
gen_copy_struct " " "ret->" "s->" typ;
pr " guestfs_free_%s(ret);\n" typ;
pr " return s;\n";
| RStructList (_, typ) ->
let struct_name = "Guestfs" ^ camel_name_of_struct typ in
pr " %s **l = g_malloc(sizeof(%s*) * (ret->len + 1));\n"
struct_name struct_name;
pr " gsize i;\n";
pr " for (i = 0; i < ret->len; i++) {\n";
pr " l[i] = g_slice_new0(%s);\n" struct_name;
gen_copy_struct " " "ret->val[i]." "l[i]->" typ;
pr " }\n";
pr " guestfs_free_%s_list(ret);\n" typ;
pr " l[i] = NULL;\n";
pr " return l;\n";
);
pr "}\n";
) external_functions
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