* indication, ie. 0 or -1.
*)
| Err
- (* "RString" and "RStringList" require special treatment because
- * the caller must free them.
+ (* "RBool" is a bool return value which can be true/false or
+ * -1 for error.
*)
+ | RBool of string
+ (* "RConstString" is a string that refers to a constant value.
+ * Try to avoid using this.
+ *)
+ | RConstString of string
+ (* "RString" and "RStringList" are caller-frees. *)
| RString of string
| RStringList of string
(* LVM PVs, VGs and LVs. *)
| P2 of argt * argt
and argt =
| String of string (* const char *name, cannot be NULL *)
+ | OptString of string (* const char *name, may be NULL *)
+ | Bool of string (* boolean *)
-type flags = ProtocolLimitWarning
+type flags =
+ | ProtocolLimitWarning (* display warning about protocol size limits *)
+ | FishAlias of string (* provide an alias for this cmd in guestfish *)
+ | FishAction of string (* call this function in guestfish *)
+ | NotInFish (* do not export via guestfish *)
(* Note about long descriptions: When referring to another
* action, use the format C<guestfs_other> (ie. the full name of
* Apart from that, long descriptions are just perldoc paragraphs.
*)
-let functions = [
+let non_daemon_functions = [
+ ("launch", (Err, P0), -1, [FishAlias "run"; FishAction "launch"],
+ "launch the qemu subprocess",
+ "\
+Internally libguestfs is implemented by running a virtual machine
+using L<qemu(1)>.
+
+You should call this after configuring the handle
+(eg. adding drives) but before performing any actions.");
+
+ ("wait_ready", (Err, P0), -1, [NotInFish],
+ "wait until the qemu subprocess launches",
+ "\
+Internally libguestfs is implemented by running a virtual machine
+using L<qemu(1)>.
+
+You should call this after C<guestfs_launch> to wait for the launch
+to complete.");
+
+ ("kill_subprocess", (Err, P0), -1, [],
+ "kill the qemu subprocess",
+ "\
+This kills the qemu subprocess. You should never need to call this.");
+
+ ("add_drive", (Err, P1 (String "filename")), -1, [FishAlias "add"],
+ "add an image to examine or modify",
+ "\
+This function adds a virtual machine disk image C<filename> to the
+guest. The first time you call this function, the disk appears as IDE
+disk 0 (C</dev/sda>) in the guest, the second time as C</dev/sdb>, and
+so on.
+
+You don't necessarily need to be root when using libguestfs. However
+you obviously do need sufficient permissions to access the filename
+for whatever operations you want to perform (ie. read access if you
+just want to read the image or write access if you want to modify the
+image).
+
+This is equivalent to the qemu parameter C<-drive file=filename>.");
+
+ ("add_cdrom", (Err, P1 (String "filename")), -1, [FishAlias "cdrom"],
+ "add a CD-ROM disk image to examine",
+ "\
+This function adds a virtual CD-ROM disk image to the guest.
+
+This is equivalent to the qemu parameter C<-cdrom filename>.");
+
+ ("config", (Err, P2 (String "qemuparam", OptString "qemuvalue")), -1, [],
+ "add qemu parameters",
+ "\
+This can be used to add arbitrary qemu command line parameters
+of the form C<-param value>. Actually it's not quite arbitrary - we
+prevent you from setting some parameters which would interfere with
+parameters that we use.
+
+The first character of C<param> string must be a C<-> (dash).
+
+C<value> can be NULL.");
+
+ ("set_path", (Err, P1 (String "path")), -1, [FishAlias "path"],
+ "set the search path",
+ "\
+Set the path that libguestfs searches for kernel and initrd.img.
+
+The default is C<$libdir/guestfs> unless overridden by setting
+C<LIBGUESTFS_PATH> environment variable.
+
+The string C<path> is stashed in the libguestfs handle, so the caller
+must make sure it remains valid for the lifetime of the handle.
+
+Setting C<path> to C<NULL> restores the default path.");
+
+ ("get_path", (RConstString "path", P0), -1, [],
+ "get the search path",
+ "\
+Return the current search path.
+
+This is always non-NULL. If it wasn't set already, then this will
+return the default path.");
+
+ ("set_autosync", (Err, P1 (Bool "autosync")), -1, [FishAlias "autosync"],
+ "set autosync mode",
+ "\
+If C<autosync> is true, this enables autosync. Libguestfs will make a
+best effort attempt to run C<guestfs_sync> when the handle is closed
+(also if the program exits without closing handles).");
+
+ ("get_autosync", (RBool "autosync", P0), -1, [],
+ "get autosync mode",
+ "\
+Get the autosync flag.");
+
+ ("set_verbose", (Err, P1 (Bool "verbose")), -1, [FishAlias "verbose"],
+ "set verbose mode",
+ "\
+If C<verbose> is true, this turns on verbose messages (to C<stderr>).
+
+Verbose messages are disabled unless the environment variable
+C<LIBGUESTFS_DEBUG> is defined and set to C<1>.");
+
+ ("get_verbose", (RBool "verbose", P0), -1, [],
+ "get verbose mode",
+ "\
+This returns the verbose messages flag.")
+]
+
+let daemon_functions = [
("mount", (Err, P2 (String "device", String "mountpoint")), 1, [],
"mount a guest disk at a position in the filesystem",
"\
"\
List all the logical volumes detected. This is the equivalent
of the L<lvs(8)> command. The \"full\" version includes all fields.");
+
+ ("read_lines", (RStringList "lines", P1 (String "path")), 15, [],
+ "read file as lines",
+ "\
+Return the contents of the file named C<path>.
+
+The file contents are returned as a list of lines. Trailing
+C<LF> and C<CRLF> character sequences are I<not> returned.
+
+Note that this function cannot correctly handle binary files
+(specifically, files containing C<\\0> character which is treated
+as end of line). For those you need to use the C<guestfs_read_file>
+function which has a more complex interface.");
]
+let all_functions = non_daemon_functions @ daemon_functions
+
+(* In some places we want the functions to be displayed sorted
+ * alphabetically, so this is useful:
+ *)
+let all_functions_sorted =
+ List.sort (fun (n1,_,_,_,_,_) (n2,_,_,_,_,_) -> compare n1 n2) all_functions
+
(* Column names and types from LVM PVs/VGs/LVs. *)
let pv_cols = [
"pv_name", `String;
"modules", `String;
]
-(* In some places we want the functions to be displayed sorted
- * alphabetically, so this is useful:
- *)
-let sorted_functions =
- List.sort (fun (n1,_,_,_,_,_) (n2,_,_,_,_,_) -> compare n1 n2) functions
-
(* Useful functions.
* Note we don't want to use any external OCaml libraries which
* makes this a bit harder than it should be.
s' ^ s2 ^ replace_str s'' s1 s2
)
+let rec find_map f = function
+ | [] -> raise Not_found
+ | x :: xs ->
+ match f x with
+ | Some y -> y
+ | None -> find_map f xs
+
+let iteri f xs =
+ let rec loop i = function
+ | [] -> ()
+ | x :: xs -> f i x; loop (i+1) xs
+ in
+ loop 0 xs
+
(* 'pr' prints to the current output file. *)
let chan = ref stdout
let pr fs = ksprintf (output_string !chan) fs
List.iter (
fun (name, _, _, _, _, longdesc) ->
if String.contains name '-' then
- failwithf "Function name '%s' should not contain '-', use '_' instead."
+ failwithf "function name '%s' should not contain '-', use '_' instead."
name;
if longdesc.[String.length longdesc-1] = '\n' then
- failwithf "Long description of %s should not end with \\n." name
- ) functions;
+ failwithf "long description of %s should not end with \\n." name
+ ) all_functions;
+
+ List.iter (
+ fun (name, _, proc_nr, _, _, _) ->
+ if proc_nr <= 0 then
+ failwithf "daemon function %s should have proc_nr > 0" name
+ ) daemon_functions;
+
+ List.iter (
+ fun (name, _, proc_nr, _, _, _) ->
+ if proc_nr <> -1 then
+ failwithf "non-daemon function %s should have proc_nr -1" name
+ ) non_daemon_functions;
let proc_nrs =
- List.map (fun (name, _, proc_nr, _, _, _) -> name, proc_nr) functions in
+ List.map (fun (name, _, proc_nr, _, _, _) -> name, proc_nr)
+ daemon_functions in
let proc_nrs =
List.sort (fun (_,nr1) (_,nr2) -> compare nr1 nr2) proc_nrs in
let rec loop = function
(match fst style with
| Err ->
pr "This function returns 0 on success or -1 on error.\n\n"
+ | RBool _ ->
+ pr "This function returns a C truth value on success or -1 on error.\n\n"
+ | RConstString _ ->
+ pr "This function returns a string or NULL on error.
+The string is owned by the guest handle and must I<not> be freed.\n\n"
| RString _ ->
pr "This function returns a string or NULL on error.
I<The caller must free the returned string after use>.\n\n"
pr "Because of the message protocol, there is a transfer limit
of somewhere between 2MB and 4MB. To transfer large files you should use
FTP.\n\n";
- ) sorted_functions
+ ) all_functions_sorted
and generate_structs_pod () =
(* LVM structs documentation. *)
) ["pv", pv_cols; "vg", vg_cols; "lv", lv_cols];
List.iter (
- fun (shortname, style, _, _, _, _) ->
+ fun(shortname, style, _, _, _, _) ->
let name = "guestfs_" ^ shortname in
pr "/* %s */\n\n" name;
(match snd style with
iter_args (
function
| String name -> pr " string %s<>;\n" name
+ | OptString name -> pr " string *%s<>;\n" name
+ | Bool name -> pr " bool %s;\n" name
) args;
pr "};\n\n"
);
(match fst style with
- | Err -> ()
+ | Err -> ()
+ | RBool n ->
+ pr "struct %s_ret {\n" name;
+ pr " bool %s;\n" n;
+ pr "};\n\n"
+ | RConstString _ ->
+ failwithf "RConstString cannot be returned from a daemon function"
| RString n ->
pr "struct %s_ret {\n" name;
pr " string %s<>;\n" n;
pr " guestfs_lvm_int_lv_list %s;\n" n;
pr "};\n\n"
);
- ) functions;
+ ) daemon_functions;
(* Table of procedure numbers. *)
pr "enum guestfs_procedure {\n";
List.iter (
fun (shortname, _, proc_nr, _, _, _) ->
pr " GUESTFS_PROC_%s = %d,\n" (String.uppercase shortname) proc_nr
- ) functions;
+ ) daemon_functions;
pr " GUESTFS_PROC_dummy\n"; (* so we don't have a "hanging comma" *)
pr "};\n";
pr "\n";
let name = "guestfs_" ^ shortname in
generate_prototype ~single_line:true ~newline:true ~handle:"handle"
name style
- ) functions
+ ) all_functions
(* Generate the client-side dispatch stubs. *)
and generate_client_actions () =
pr " struct guestfs_message_error err;\n";
(match fst style with
| Err -> ()
- | RString _ | RStringList _ | RPVList _ | RVGList _ | RLVList _ ->
+ | RConstString _ ->
+ failwithf "RConstString cannot be returned from a daemon function"
+ | RBool _ | RString _ | RStringList _
+ | RPVList _ | RVGList _ | RLVList _ ->
pr " struct %s_ret ret;\n" name
);
pr "};\n\n";
(match fst style with
| Err -> ()
- | RString _ | RStringList _ | RPVList _ | RVGList _ | RLVList _ ->
+ | RConstString _ ->
+ failwithf "RConstString cannot be returned from a daemon function"
+ | RBool _ | RString _ | RStringList _
+ | RPVList _ | RVGList _ | RLVList _ ->
pr " if (!xdr_%s_ret (xdr, &rv->ret)) {\n" name;
pr " error (g, \"%s: failed to parse reply\");\n" name;
pr " return;\n";
let error_code =
match fst style with
- | Err -> "-1"
+ | Err | RBool _ -> "-1"
+ | RConstString _ ->
+ failwithf "RConstString cannot be returned from a daemon function"
| RString _ | RStringList _ | RPVList _ | RVGList _ | RLVList _ ->
"NULL" in
| args ->
iter_args (
function
- | String name -> pr " args.%s = (char *) %s;\n" name name
+ | String name ->
+ pr " args.%s = (char *) %s;\n" name name
+ | OptString name ->
+ pr " args.%s = %s ? *%s : NULL;\n" name name name
+ | Bool name ->
+ pr " args.%s = %s;\n" name name
) args;
pr " serial = dispatch (g, GUESTFS_PROC_%s,\n"
(String.uppercase shortname);
(match fst style with
| Err -> pr " return 0;\n"
+ | RBool n -> pr " return rv.ret.%s;\n" n
+ | RConstString _ ->
+ failwithf "RConstString cannot be returned from a daemon function"
| RString n ->
pr " return rv.ret.%s; /* caller will free */\n" n
| RStringList n ->
);
pr "}\n\n"
- ) functions
+ ) daemon_functions
(* Generate daemon/actions.h. *)
and generate_daemon_actions_h () =
List.iter (
fun (name, style, _, _, _, _) ->
- generate_prototype
- ~single_line:true ~newline:true ~in_daemon:true ("do_" ^ name) style;
- ) functions
+ generate_prototype
+ ~single_line:true ~newline:true ~in_daemon:true ("do_" ^ name) style;
+ ) daemon_functions
(* Generate the server-side stubs. *)
and generate_daemon_actions () =
let error_code =
match fst style with
| Err -> pr " int r;\n"; "-1"
+ | RBool _ -> pr " int r;\n"; "-1"
+ | RConstString _ ->
+ failwithf "RConstString cannot be returned from a daemon function"
| RString _ -> pr " char *r;\n"; "NULL"
| RStringList _ -> pr " char **r;\n"; "NULL"
| RPVList _ -> pr " guestfs_lvm_int_pv_list *r;\n"; "NULL"
pr " struct guestfs_%s_args args;\n" name;
iter_args (
function
- | String name -> pr " const char *%s;\n" name
+ | String name
+ | OptString name -> pr " const char *%s;\n" name
+ | Bool name -> pr " int %s;\n" name
) args
);
pr "\n";
iter_args (
function
| String name -> pr " %s = args.%s;\n" name name
+ | OptString name -> pr " %s = args.%s;\n" name name (* XXX? *)
+ | Bool name -> pr " %s = args.%s;\n" name name
) args;
pr "\n"
);
(match fst style with
| Err -> pr " reply (NULL, NULL);\n"
+ | RBool n ->
+ pr " struct guestfs_%s_ret ret;\n" name;
+ pr " ret.%s = r;\n" n;
+ pr " reply ((xdrproc_t) &xdr_guestfs_%s_ret, (char *) &ret);\n" name
+ | RConstString _ ->
+ failwithf "RConstString cannot be returned from a daemon function"
| RString n ->
pr " struct guestfs_%s_ret ret;\n" name;
pr " ret.%s = r;\n" n;
);
pr "}\n\n";
- ) functions;
+ ) daemon_functions;
(* Dispatch function. *)
pr "void dispatch_incoming_message (XDR *xdr_in)\n";
List.iter (
fun (name, style, _, _, _, _) ->
- pr " case GUESTFS_PROC_%s:\n" (String.uppercase name);
- pr " %s_stub (xdr_in);\n" name;
- pr " break;\n"
- ) functions;
+ pr " case GUESTFS_PROC_%s:\n" (String.uppercase name);
+ pr " %s_stub (xdr_in);\n" name;
+ pr " break;\n"
+ ) daemon_functions;
pr " default:\n";
pr " reply_with_error (\"dispatch_incoming_message: unknown procedure number %%d\", proc_nr);\n";
and generate_fish_cmds () =
generate_header CStyle GPLv2;
+ let all_functions =
+ List.filter (
+ fun (_, _, _, flags, _, _) -> not (List.mem NotInFish flags)
+ ) all_functions in
+ let all_functions_sorted =
+ List.filter (
+ fun (_, _, _, flags, _, _) -> not (List.mem NotInFish flags)
+ ) all_functions_sorted in
+
pr "#include <stdio.h>\n";
pr "#include <stdlib.h>\n";
pr "#include <string.h>\n";
pr " printf (\" %%-16s %%s\\n\", \"Command\", \"Description\");\n";
pr " list_builtin_commands ();\n";
List.iter (
- fun (name, _, _, _, shortdesc, _) ->
+ fun (name, _, _, flags, shortdesc, _) ->
let name = replace_char name '_' '-' in
pr " printf (\"%%-20s %%s\\n\", \"%s\", \"%s\");\n"
name shortdesc
- ) sorted_functions;
+ ) all_functions_sorted;
pr " printf (\" Use -h <cmd> / help <cmd> to show detailed help for a command.\\n\");\n";
pr "}\n";
pr "\n";
List.iter (
fun (name, style, _, flags, shortdesc, longdesc) ->
let name2 = replace_char name '_' '-' in
+ let alias =
+ try find_map (function FishAlias n -> Some n | _ -> None) flags
+ with Not_found -> name in
let longdesc = replace_str longdesc "C<guestfs_" "C<" in
let synopsis =
match snd style with
name2 (
String.concat "> <" (
map_args (function
- | String n -> n) args
+ | String n | OptString n | Bool n -> n) args
)
) in
FTP."
else "" in
+ let describe_alias =
+ if name <> alias then
+ sprintf "\n\nYou can use '%s' as an alias for this command." alias
+ else "" in
+
pr " if (";
pr "strcasecmp (cmd, \"%s\") == 0" name;
if name <> name2 then
pr " || strcasecmp (cmd, \"%s\") == 0" name2;
+ if name <> alias then
+ pr " || strcasecmp (cmd, \"%s\") == 0" alias;
pr ")\n";
pr " pod2text (\"%s - %s\", %S);\n"
name2 shortdesc
- (" " ^ synopsis ^ "\n\n" ^ longdesc ^ warnings);
+ (" " ^ synopsis ^ "\n\n" ^ longdesc ^ warnings ^ describe_alias);
pr " else\n"
- ) functions;
+ ) all_functions;
pr " display_builtin_command (cmd);\n";
pr "}\n";
pr "\n";
(* run_<action> actions *)
List.iter (
- fun (name, style, _, _, _, _) ->
+ fun (name, style, _, flags, _, _) ->
pr "static int run_%s (const char *cmd, int argc, char *argv[])\n" name;
pr "{\n";
(match fst style with
- | Err -> pr " int r;\n"
+ | Err
+ | RBool _ -> pr " int r;\n"
+ | RConstString _ -> pr " const char *r;\n"
| RString _ -> pr " char *r;\n"
| RStringList _ -> pr " char **r;\n"
| RPVList _ -> pr " struct guestfs_lvm_pv_list *r;\n"
iter_args (
function
| String name -> pr " const char *%s;\n" name
+ | OptString name -> pr " const char *%s;\n" name
+ | Bool name -> pr " int %s;\n" name
) (snd style);
(* Check and convert parameters. *)
fun i ->
function
| String name -> pr " %s = argv[%d];\n" name i
+ | OptString name ->
+ pr " %s = strcmp (argv[%d], \"\") != 0 ? argv[%d] : NULL;\n"
+ name i i
+ | Bool name ->
+ pr " %s = is_true (argv[%d]) ? 1 : 0;\n" name i
) (snd style);
(* Call C API function. *)
- pr " r = guestfs_%s " name;
+ let fn =
+ try find_map (function FishAction n -> Some n | _ -> None) flags
+ with Not_found -> sprintf "guestfs_%s" name in
+ pr " r = %s " fn;
generate_call_args ~handle:"g" style;
pr ";\n";
(* Check return value for errors and display command results. *)
(match fst style with
| Err -> pr " return r;\n"
+ | RBool _ ->
+ pr " if (r == -1) return -1;\n";
+ pr " if (r) printf (\"true\\n\"); else printf (\"false\\n\");\n";
+ pr " return 0;\n"
+ | RConstString _ ->
+ pr " if (r == NULL) return -1;\n";
+ pr " printf (\"%%s\\n\", r);\n";
+ pr " return 0;\n"
| RString _ ->
pr " if (r == NULL) return -1;\n";
- pr " printf (\"%%s\", r);\n";
+ pr " printf (\"%%s\\n\", r);\n";
pr " free (r);\n";
pr " return 0;\n"
| RStringList _ ->
);
pr "}\n";
pr "\n"
- ) functions;
+ ) all_functions;
(* run_action function *)
pr "int run_action (const char *cmd, int argc, char *argv[])\n";
pr "{\n";
List.iter (
- fun (name, _, _, _, _, _) ->
+ fun (name, _, _, flags, _, _) ->
let name2 = replace_char name '_' '-' in
+ let alias =
+ try find_map (function FishAlias n -> Some n | _ -> None) flags
+ with Not_found -> name in
pr " if (";
pr "strcasecmp (cmd, \"%s\") == 0" name;
if name <> name2 then
pr " || strcasecmp (cmd, \"%s\") == 0" name2;
+ if name <> alias then
+ pr " || strcasecmp (cmd, \"%s\") == 0" alias;
pr ")\n";
pr " return run_%s (cmd, argc, argv);\n" name;
pr " else\n";
- ) functions;
+ ) all_functions;
pr " {\n";
pr " fprintf (stderr, \"%%s: unknown command\\n\", cmd);\n";
pr " return -1;\n";
(* Generate the POD documentation for guestfish. *)
and generate_fish_actions_pod () =
+ let all_functions_sorted =
+ List.filter (
+ fun (_, _, _, flags, _, _) -> not (List.mem NotInFish flags)
+ ) all_functions_sorted in
+
List.iter (
- fun (name, style, _, _, _, longdesc) ->
+ fun (name, style, _, flags, _, longdesc) ->
let longdesc = replace_str longdesc "C<guestfs_" "C<" in
let name = replace_char name '_' '-' in
- pr "=head2 %s\n\n" name;
+ let alias =
+ try find_map (function FishAlias n -> Some n | _ -> None) flags
+ with Not_found -> name in
+
+ pr "=head2 %s" name;
+ if name <> alias then
+ pr " | %s" alias;
+ pr "\n";
+ pr "\n";
pr " %s" name;
iter_args (
function
| String n -> pr " %s" n
+ | OptString n -> pr " %s" n
+ | Bool _ -> pr " true|false"
) (snd style);
pr "\n";
pr "\n";
pr "%s\n\n" longdesc
- ) sorted_functions
+ ) all_functions_sorted
(* Generate a C function prototype. *)
and generate_prototype ?(extern = true) ?(static = false) ?(semicolon = true)
if static then pr "static ";
(match fst style with
| Err -> pr "int "
+ | RBool _ -> pr "int "
+ | RConstString _ -> pr "const char *"
| RString _ -> pr "char *"
| RStringList _ -> pr "char **"
| RPVList _ ->
iter_args (
function
| String name -> next (); pr "const char *%s" name
+ | OptString name -> next (); pr "const char *%s" name
+ | Bool name -> next (); pr "int %s" name
) (snd style);
pr ")";
if semicolon then pr ";";
comma := true;
match arg with
| String name -> pr "%s" name
+ | OptString name -> pr "%s" name
+ | Bool name -> pr "%s" name
) (snd style);
pr ")"
unreferenced, but callers can also call this in order to
provide predictable cleanup. *)
-val launch : t -> unit
-val wait_ready : t -> unit
-val kill_subprocess : t -> unit
-
-val add_drive : t -> string -> unit
-val add_cdrom : t -> string -> unit
-val config : t -> string -> string option -> unit
-
-val set_path : t -> string option -> unit
-val get_path : t -> string
-val set_autosync : t -> bool -> unit
-val get_autosync : t -> bool
-val set_verbose : t -> bool -> unit
-val get_verbose : t -> bool
-
";
generate_ocaml_lvm_structure_decls ();
generate_ocaml_prototype name style;
pr "(** %s *)\n" shortdesc;
pr "\n"
- ) sorted_functions
+ ) all_functions
(* Generate the OCaml bindings implementation. *)
and generate_ocaml_ml () =
type t
exception Error of string
external create : unit -> t = \"ocaml_guestfs_create\"
-external close : t -> unit = \"ocaml_guestfs_create\"
-external launch : t -> unit = \"ocaml_guestfs_launch\"
-external wait_ready : t -> unit = \"ocaml_guestfs_wait_ready\"
-external kill_subprocess : t -> unit = \"ocaml_guestfs_kill_subprocess\"
-external add_drive : t -> string -> unit = \"ocaml_guestfs_add_drive\"
-external add_cdrom : t -> string -> unit = \"ocaml_guestfs_add_cdrom\"
-external config : t -> string -> string option -> unit = \"ocaml_guestfs_config\"
-external set_path : t -> string option -> unit = \"ocaml_guestfs_set_path\"
-external get_path : t -> string = \"ocaml_guestfs_get_path\"
-external set_autosync : t -> bool -> unit = \"ocaml_guestfs_set_autosync\"
-external get_autosync : t -> bool = \"ocaml_guestfs_get_autosync\"
-external set_verbose : t -> bool -> unit = \"ocaml_guestfs_set_verbose\"
-external get_verbose : t -> bool = \"ocaml_guestfs_get_verbose\"
+external close : t -> unit = \"ocaml_guestfs_close\"
+
+let () =
+ Callback.register_exception \"ocaml_guestfs_error\" (Error \"\")
";
+
generate_ocaml_lvm_structure_decls ();
(* The actions. *)
List.iter (
fun (name, style, _, _, shortdesc, _) ->
generate_ocaml_prototype ~is_external:true name style;
- ) sorted_functions
+ ) all_functions
(* Generate the OCaml bindings C implementation. *)
and generate_ocaml_c () =
pr "#include <stdio.h>\n";
pr "#include <stdlib.h>\n";
- pr "\n";
- pr "#include <guestfs.h>\n";
+ pr "#include <string.h>\n";
pr "\n";
pr "#include <caml/config.h>\n";
pr "#include <caml/alloc.h>\n";
pr "#include <caml/fail.h>\n";
pr "#include <caml/memory.h>\n";
pr "#include <caml/mlvalues.h>\n";
+ pr "#include <caml/signals.h>\n";
+ pr "\n";
+ pr "#include <guestfs.h>\n";
pr "\n";
pr "#include \"guestfs_c.h\"\n";
pr "\n";
+ (* LVM struct copy functions. *)
+ List.iter (
+ fun (typ, cols) ->
+ let has_optpercent_col =
+ List.exists (function (_, `OptPercent) -> true | _ -> false) cols in
+
+ pr "static CAMLprim value\n";
+ pr "copy_lvm_%s (const struct guestfs_lvm_%s *%s)\n" typ typ typ;
+ pr "{\n";
+ pr " CAMLparam0 ();\n";
+ if has_optpercent_col then
+ pr " CAMLlocal3 (rv, v, v2);\n"
+ else
+ pr " CAMLlocal2 (rv, v);\n";
+ pr "\n";
+ pr " rv = caml_alloc (%d, 0);\n" (List.length cols);
+ iteri (
+ fun i col ->
+ (match col with
+ | name, `String ->
+ pr " v = caml_copy_string (%s->%s);\n" typ name
+ | name, `UUID ->
+ pr " v = caml_alloc_string (32);\n";
+ pr " memcpy (String_val (v), %s->%s, 32);\n" typ name
+ | name, `Bytes
+ | name, `Int ->
+ pr " v = caml_copy_int64 (%s->%s);\n" typ name
+ | name, `OptPercent ->
+ pr " if (%s->%s >= 0) { /* Some %s */\n" typ name name;
+ pr " v2 = caml_copy_double (%s->%s);\n" typ name;
+ pr " v = caml_alloc (1, 0);\n";
+ pr " Store_field (v, 0, v2);\n";
+ pr " } else /* None */\n";
+ pr " v = Val_int (0);\n";
+ );
+ pr " Store_field (rv, %d, v);\n" i
+ ) cols;
+ pr " CAMLreturn (rv);\n";
+ pr "}\n";
+ pr "\n";
+
+ pr "static CAMLprim value\n";
+ pr "copy_lvm_%s_list (const struct guestfs_lvm_%s_list *%ss)\n"
+ typ typ typ;
+ pr "{\n";
+ pr " CAMLparam0 ();\n";
+ pr " CAMLlocal2 (rv, v);\n";
+ pr " int i;\n";
+ pr "\n";
+ pr " if (%ss->len == 0)\n" typ;
+ pr " CAMLreturn (Atom (0));\n";
+ pr " else {\n";
+ pr " rv = caml_alloc (%ss->len, 0);\n" typ;
+ pr " for (i = 0; i < %ss->len; ++i) {\n" typ;
+ pr " v = copy_lvm_%s (&%ss->val[i]);\n" typ typ;
+ pr " caml_modify (&Field (rv, i), v);\n";
+ pr " }\n";
+ pr " CAMLreturn (rv);\n";
+ pr " }\n";
+ pr "}\n";
+ pr "\n";
+ ) ["pv", pv_cols; "vg", vg_cols; "lv", lv_cols];
+
List.iter (
fun (name, style, _, _, _, _) ->
pr "CAMLprim value\n";
- pr "ocaml_guestfs_%s (value hv /* XXX */)\n" name;
+ pr "ocaml_guestfs_%s (value gv" name;
+ iter_args (
+ function
+ | String n | OptString n | Bool n -> pr ", value %sv" n
+ ) (snd style);
+ pr ")\n";
pr "{\n";
- pr " CAMLparam1 (hv); /* XXX */\n";
- pr "/* XXX write something here */\n";
- pr " CAMLreturn (Val_unit); /* XXX */\n";
+ pr " CAMLparam%d (gv" (1 + (nr_args (snd style)));
+ iter_args (
+ function
+ | String n | OptString n | Bool n -> pr ", %sv" n
+ ) (snd style);
+ pr ");\n";
+ pr " CAMLlocal1 (rv);\n";
+ pr "\n";
+
+ pr " guestfs_h *g = Guestfs_val (gv);\n";
+ pr " if (g == NULL)\n";
+ pr " caml_failwith (\"%s: used handle after closing it\");\n" name;
+ pr "\n";
+
+ iter_args (
+ function
+ | String n ->
+ pr " const char *%s = String_val (%sv);\n" n n
+ | OptString n ->
+ pr " const char *%s =\n" n;
+ pr " %sv != Val_int (0) ? String_val (Field (%sv, 0)) : NULL;\n"
+ n n
+ | Bool n ->
+ pr " int %s = Bool_val (%sv);\n" n n
+ ) (snd style);
+ let error_code =
+ match fst style with
+ | Err -> pr " int r;\n"; "-1"
+ | RBool _ -> pr " int r;\n"; "-1"
+ | RConstString _ -> pr " const char *r;\n"; "NULL"
+ | RString _ -> pr " char *r;\n"; "NULL"
+ | RStringList _ ->
+ pr " int i;\n";
+ pr " char **r;\n";
+ "NULL"
+ | RPVList _ ->
+ pr " struct guestfs_lvm_pv_list *r;\n";
+ "NULL"
+ | RVGList _ ->
+ pr " struct guestfs_lvm_vg_list *r;\n";
+ "NULL"
+ | RLVList _ ->
+ pr " struct guestfs_lvm_lv_list *r;\n";
+ "NULL" in
+ pr "\n";
+
+ pr " caml_enter_blocking_section ();\n";
+ pr " r = guestfs_%s " name;
+ generate_call_args ~handle:"g" style;
+ pr ";\n";
+ pr " caml_leave_blocking_section ();\n";
+ pr " if (r == %s)\n" error_code;
+ pr " ocaml_guestfs_raise_error (g, \"%s\");\n" name;
+ pr "\n";
+
+ (match fst style with
+ | Err -> pr " rv = Val_unit;\n"
+ | RBool _ -> pr " rv = r ? Val_true : Val_false;\n"
+ | RConstString _ -> pr " rv = caml_copy_string (r);\n"
+ | RString _ ->
+ pr " rv = caml_copy_string (r);\n";
+ pr " free (r);\n"
+ | RStringList _ ->
+ pr " rv = caml_copy_string_array ((const char **) r);\n";
+ pr " for (i = 0; r[i] != NULL; ++i) free (r[i]);\n";
+ pr " free (r);\n"
+ | RPVList _ ->
+ pr " rv = copy_lvm_pv_list (r);\n";
+ pr " guestfs_free_lvm_pv_list (r);\n";
+ | RVGList _ ->
+ pr " rv = copy_lvm_vg_list (r);\n";
+ pr " guestfs_free_lvm_vg_list (r);\n";
+ | RLVList _ ->
+ pr " rv = copy_lvm_lv_list (r);\n";
+ pr " guestfs_free_lvm_lv_list (r);\n";
+ );
+
+ pr " CAMLreturn (rv);\n";
pr "}\n";
pr "\n"
- ) sorted_functions
+ ) all_functions
and generate_ocaml_lvm_structure_decls () =
List.iter (
pr "%s : t -> " name;
iter_args (
function
- | String _ -> pr "string -> " (* note String is not allowed to be NULL *)
+ | String _ -> pr "string -> "
+ | OptString _ -> pr "string option -> "
+ | Bool _ -> pr "bool -> "
) (snd style);
(match fst style with
| Err -> pr "unit" (* all errors are turned into exceptions *)
+ | RBool _ -> pr "bool"
+ | RConstString _ -> pr "string"
| RString _ -> pr "string"
- | RStringList _ -> pr "string list"
- | RPVList _ -> pr "lvm_pv list"
- | RVGList _ -> pr "lvm_vg list"
- | RLVList _ -> pr "lvm_lv list"
+ | RStringList _ -> pr "string array"
+ | RPVList _ -> pr "lvm_pv array"
+ | RVGList _ -> pr "lvm_vg array"
+ | RLVList _ -> pr "lvm_lv array"
);
if is_external then pr " = \"ocaml_guestfs_%s\"" name;
pr "\n"
guestfs_h *
_create ()
-CODE:
- RETVAL = guestfs_create ();
- if (!RETVAL)
- croak (\"could not create guestfs handle\");
- guestfs_set_error_handler (RETVAL, error_handler, NULL);
-OUTPUT:
- RETVAL
+ CODE:
+ RETVAL = guestfs_create ();
+ if (!RETVAL)
+ croak (\"could not create guestfs handle\");
+ guestfs_set_error_handler (RETVAL, error_handler, NULL);
+ OUTPUT:
+ RETVAL
void
DESTROY (g)
- guestfs_h *g;
-PPCODE:
- guestfs_close (g);
+ guestfs_h *g;
+ PPCODE:
+ guestfs_close (g);
";
fun (name, style, _, _, _, _) ->
(match fst style with
| Err -> pr "void\n"
+ | RBool _ -> pr "SV *\n"
+ | RConstString _ -> pr "SV *\n"
| RString _ -> pr "SV *\n"
| RStringList _
| RPVList _ | RVGList _ | RLVList _ ->
iter_args (
function
| String n -> pr " char *%s;\n" n
+ | OptString n -> pr " char *%s;\n" n
+ | Bool n -> pr " int %s;\n" n
) (snd style);
(* Code. *)
(match fst style with
generate_call_args ~handle:"g" style;
pr " == -1)\n";
pr " croak (\"%s: %%s\", last_error);\n" name
+ | RConstString n ->
+ pr "PREINIT:\n";
+ pr " const char *%s;\n" n;
+ pr " CODE:\n";
+ pr " %s = guestfs_%s " n name;
+ generate_call_args ~handle:"g" style;
+ pr ";\n";
+ pr " if (%s == NULL)\n" n;
+ pr " croak (\"%s: %%s\", last_error);\n" name;
+ pr " RETVAL = newSVpv (%s, 0);\n" n;
+ pr " OUTPUT:\n";
+ pr " RETVAL\n"
| RString n ->
pr "PREINIT:\n";
pr " char *%s;\n" n;
pr " free (%s);\n" n;
pr " OUTPUT:\n";
pr " RETVAL\n"
+ | RBool n ->
+ pr "PREINIT:\n";
+ pr " int %s;\n" n;
+ pr " CODE:\n";
+ pr " %s = guestfs_%s " n name;
+ generate_call_args ~handle:"g" style;
+ pr ";\n";
+ pr " if (%s == -1)\n" n;
+ pr " croak (\"%s: %%s\", last_error);\n" name;
+ pr " RETVAL = newSViv (%s);\n" n;
+ pr " OUTPUT:\n";
+ pr " RETVAL\n"
| RStringList n ->
pr "PREINIT:\n";
pr " char **%s;\n" n;
generate_perl_lvm_code "lv" lv_cols name style n;
);
pr "\n"
- ) functions
+ ) all_functions
and generate_perl_lvm_code typ cols name style n =
pr "PREINIT:\n";
pr "Because of the message protocol, there is a transfer limit
of somewhere between 2MB and 4MB. To transfer large files you should use
FTP.\n\n";
- ) sorted_functions;
+ ) all_functions_sorted;
(* End of file. *)
pr "\
and generate_perl_prototype name style =
(match fst style with
| Err -> ()
+ | RBool n
+ | RConstString n
| RString n -> pr "$%s = " n
| RStringList n
| RPVList n
comma := true;
match arg with
| String n -> pr "%s" n
+ | OptString n -> pr "%s" n
+ | Bool n -> pr "%s" n
) (snd style);
pr ");"
git.annexia.org / libguestfs.git / blobdiff