| StringList of string(* list of strings (each string cannot be NULL) *)
| Bool of string (* boolean *)
| Int of string (* int (smallish ints, signed, <= 31 bits) *)
+ (* These are treated as filenames (simple string parameters) in
+ * the C API and bindings. But in the RPC protocol, we transfer
+ * the actual file content up to or down from the daemon.
+ * FileIn: local machine -> daemon (in request)
+ * FileOut: daemon -> local machine (in reply)
+ * In guestfish (only), the special name "-" means read from
+ * stdin or write to stdout.
+ *)
+ | FileIn of string
+ | FileOut of string
type flags =
| ProtocolLimitWarning (* display warning about protocol size limits *)
[],
"get verbose mode",
"\
-This returns the verbose messages flag.")
+This returns the verbose messages flag.");
+
+ ("is_ready", (RBool "ready", []), -1, [],
+ [],
+ "is ready to accept commands",
+ "\
+This returns true iff this handle is ready to accept commands
+(in the C<READY> state).
+
+For more information on states, see L<guestfs(3)>.");
+
+ ("is_config", (RBool "config", []), -1, [],
+ [],
+ "is in configuration state",
+ "\
+This returns true iff this handle is being configured
+(in the C<CONFIG> state).
+
+For more information on states, see L<guestfs(3)>.");
+
+ ("is_launching", (RBool "launching", []), -1, [],
+ [],
+ "is launching subprocess",
+ "\
+This returns true iff this handle is launching the subprocess
+(in the C<LAUNCHING> state).
+
+For more information on states, see L<guestfs(3)>.");
+
+ ("is_busy", (RBool "busy", []), -1, [],
+ [],
+ "is busy processing a command",
+ "\
+This returns true iff this handle is busy processing a command
+(in the C<BUSY> state).
+
+For more information on states, see L<guestfs(3)>.");
+
+ ("get_state", (RInt "state", []), -1, [],
+ [],
+ "get the current state",
+ "\
+This returns the current state as an opaque integer. This is
+only useful for printing debug and internal error messages.
+
+For more information on states, see L<guestfs(3)>.");
+
+ ("set_busy", (RErr, []), -1, [NotInFish],
+ [],
+ "set state to busy",
+ "\
+This sets the state to C<BUSY>. This is only used when implementing
+actions using the low-level API.
+
+For more information on states, see L<guestfs(3)>.");
+
+ ("set_ready", (RErr, []), -1, [NotInFish],
+ [],
+ "set state to ready",
+ "\
+This sets the state to C<READY>. This is only used when implementing
+actions using the low-level API.
+
+For more information on states, see L<guestfs(3)>.");
+
]
let daemon_functions = [
Note that this function cannot correctly handle binary files
(specifically, files containing C<\\0> character which is treated
-as end of string). For those you need to use the C<guestfs_read_file>
+as end of string). For those you need to use the C<guestfs_download>
function which has a more complex interface.");
("ll", (RString "listing", [String "directory"]), 5, [],
This uses the L<blockdev(8)> command.");
+ ("upload", (RErr, [FileIn "filename"; String "remotefilename"]), 66, [],
+ [],
+ "upload a file from the local machine",
+ "\
+Upload local file C<filename> to C<remotefilename> on the
+filesystem.
+
+C<filename> can also be a named pipe.
+
+See also C<guestfs_download>.");
+
+ ("download", (RErr, [String "remotefilename"; FileOut "filename"]), 67, [],
+ [],
+ "download a file to the local machine",
+ "\
+Download file C<remotefilename> and save it as C<filename>
+on the local machine.
+
+C<filename> can also be a named pipe.
+
+See also C<guestfs_upload>, C<guestfs_cat>.");
+
+ ("checksum", (RString "checksum", [String "csumtype"; String "path"]), 68, [],
+ [InitBasicFS, TestOutput (
+ [["write_file"; "/new"; "test\n"; "0"];
+ ["checksum"; "crc"; "/new"]], "935282863");
+ InitBasicFS, TestLastFail (
+ [["checksum"; "crc"; "/new"]]);
+ InitBasicFS, TestOutput (
+ [["write_file"; "/new"; "test\n"; "0"];
+ ["checksum"; "md5"; "/new"]], "d8e8fca2dc0f896fd7cb4cb0031ba249");
+ InitBasicFS, TestOutput (
+ [["write_file"; "/new"; "test\n"; "0"];
+ ["checksum"; "sha1"; "/new"]], "4e1243bd22c66e76c2ba9eddc1f91394e57f9f83");
+ InitBasicFS, TestOutput (
+ [["write_file"; "/new"; "test\n"; "0"];
+ ["checksum"; "sha224"; "/new"]], "52f1bf093f4b7588726035c176c0cdb4376cfea53819f1395ac9e6ec");
+ InitBasicFS, TestOutput (
+ [["write_file"; "/new"; "test\n"; "0"];
+ ["checksum"; "sha256"; "/new"]], "f2ca1bb6c7e907d06dafe4687e579fce76b37e4e93b7605022da52e6ccc26fd2");
+ InitBasicFS, TestOutput (
+ [["write_file"; "/new"; "test\n"; "0"];
+ ["checksum"; "sha384"; "/new"]], "109bb6b5b6d5547c1ce03c7a8bd7d8f80c1cb0957f50c4f7fda04692079917e4f9cad52b878f3d8234e1a170b154b72d");
+ InitBasicFS, TestOutput (
+ [["write_file"; "/new"; "test\n"; "0"];
+ ["checksum"; "sha512"; "/new"]], "0e3e75234abc68f4378a86b3f4b32a198ba301845b0cd6e50106e874345700cc6663a86c1ea125dc5e92be17c98f9a0f85ca9d5f595db2012f7cc3571945c123")],
+ "compute MD5, SHAx or CRC checksum of file",
+ "\
+This call computes the MD5, SHAx or CRC checksum of the
+file named C<path>.
+
+The type of checksum to compute is given by the C<csumtype>
+parameter which must have one of the following values:
+
+=over 4
+
+=item C<crc>
+
+Compute the cyclic redundancy check (CRC) specified by POSIX
+for the C<cksum> command.
+
+=item C<md5>
+
+Compute the MD5 hash (using the C<md5sum> program).
+
+=item C<sha1>
+
+Compute the SHA1 hash (using the C<sha1sum> program).
+
+=item C<sha224>
+
+Compute the SHA224 hash (using the C<sha224sum> program).
+
+=item C<sha256>
+
+Compute the SHA256 hash (using the C<sha256sum> program).
+
+=item C<sha384>
+
+Compute the SHA384 hash (using the C<sha384sum> program).
+
+=item C<sha512>
+
+Compute the SHA512 hash (using the C<sha512sum> program).
+
+=back
+
+The checksum is returned as a printable string.");
+
]
let all_functions = non_daemon_functions @ daemon_functions
done;
if not !r then s else s2
+let isspace c =
+ c = ' '
+ (* || c = '\f' *) || c = '\n' || c = '\r' || c = '\t' (* || c = '\v' *)
+
+let triml ?(test = isspace) str =
+ let i = ref 0 in
+ let n = ref (String.length str) in
+ while !n > 0 && test str.[!i]; do
+ decr n;
+ incr i
+ done;
+ if !i = 0 then str
+ else String.sub str !i !n
+
+let trimr ?(test = isspace) str =
+ let n = ref (String.length str) in
+ while !n > 0 && test str.[!n-1]; do
+ decr n
+ done;
+ if !n = String.length str then str
+ else String.sub str 0 !n
+
+let trim ?(test = isspace) str =
+ trimr ~test (triml ~test str)
+
let rec find s sub =
let len = String.length s in
let sublen = String.length sub in
loop 0 xs
let name_of_argt = function
- | String n | OptString n | StringList n | Bool n | Int n -> n
+ | String n | OptString n | StringList n | Bool n | Int n
+ | FileIn n | FileOut n -> n
let seq_of_test = function
| TestRun s | TestOutput (s, _) | TestOutputList (s, _)
| StringList n -> pr " str %s<>;\n" n
| Bool n -> pr " bool %s;\n" n
| Int n -> pr " int %s;\n" n
+ | FileIn _ | FileOut _ -> ()
) args;
pr "};\n\n"
);
fun (shortname, _, proc_nr, _, _, _, _) ->
pr " GUESTFS_PROC_%s = %d,\n" (String.uppercase shortname) proc_nr
) daemon_functions;
- pr " GUESTFS_PROC_dummy\n"; (* so we don't have a "hanging comma" *)
+ pr " GUESTFS_PROC_NR_PROCS\n";
pr "};\n";
pr "\n";
(* Message header, etc. *)
pr "\
+/* The communication protocol is now documented in the guestfs(3)
+ * manpage.
+ */
+
const GUESTFS_PROGRAM = 0x2000F5F5;
const GUESTFS_PROTOCOL_VERSION = 1;
+/* These constants must be larger than any possible message length. */
+const GUESTFS_LAUNCH_FLAG = 0xf5f55ff5;
+const GUESTFS_CANCEL_FLAG = 0xffffeeee;
+
enum guestfs_message_direction {
GUESTFS_DIRECTION_CALL = 0, /* client -> daemon */
GUESTFS_DIRECTION_REPLY = 1 /* daemon -> client */
const GUESTFS_ERROR_LEN = 256;
struct guestfs_message_error {
- string error<GUESTFS_ERROR_LEN>; /* error message */
+ string error_message<GUESTFS_ERROR_LEN>;
};
struct guestfs_message_header {
unsigned serial; /* message serial number */
guestfs_message_status status;
};
+
+const GUESTFS_MAX_CHUNK_SIZE = 8192;
+
+struct guestfs_chunk {
+ int cancel; /* if non-zero, transfer is cancelled */
+ /* data size is 0 bytes if the transfer has finished successfully */
+ opaque data<GUESTFS_MAX_CHUNK_SIZE>;
+};
"
(* Generate the guestfs-structs.h file. *)
and generate_client_actions () =
generate_header CStyle LGPLv2;
+ pr "\
+#include <stdio.h>
+#include <stdlib.h>
+
+#include \"guestfs.h\"
+#include \"guestfs_protocol.h\"
+
+#define error guestfs_error
+#define perrorf guestfs_perrorf
+#define safe_malloc guestfs_safe_malloc
+#define safe_realloc guestfs_safe_realloc
+#define safe_strdup guestfs_safe_strdup
+#define safe_memdup guestfs_safe_memdup
+
+/* Check the return message from a call for validity. */
+static int
+check_reply_header (guestfs_h *g,
+ const struct guestfs_message_header *hdr,
+ int proc_nr, int serial)
+{
+ if (hdr->prog != GUESTFS_PROGRAM) {
+ error (g, \"wrong program (%%d/%%d)\", hdr->prog, GUESTFS_PROGRAM);
+ return -1;
+ }
+ if (hdr->vers != GUESTFS_PROTOCOL_VERSION) {
+ error (g, \"wrong protocol version (%%d/%%d)\",
+ hdr->vers, GUESTFS_PROTOCOL_VERSION);
+ return -1;
+ }
+ if (hdr->direction != GUESTFS_DIRECTION_REPLY) {
+ error (g, \"unexpected message direction (%%d/%%d)\",
+ hdr->direction, GUESTFS_DIRECTION_REPLY);
+ return -1;
+ }
+ if (hdr->proc != proc_nr) {
+ error (g, \"unexpected procedure number (%%d/%%d)\", hdr->proc, proc_nr);
+ return -1;
+ }
+ if (hdr->serial != serial) {
+ error (g, \"unexpected serial (%%d/%%d)\", hdr->serial, serial);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* Check we are in the right state to run a high-level action. */
+static int
+check_state (guestfs_h *g, const char *caller)
+{
+ if (!guestfs_is_ready (g)) {
+ if (guestfs_is_config (g))
+ error (g, \"%%s: call launch() before using this function\",
+ caller);
+ else if (guestfs_is_launching (g))
+ error (g, \"%%s: call wait_ready() before using this function\",
+ caller);
+ else
+ error (g, \"%%s called from the wrong state, %%d != READY\",
+ caller, guestfs_get_state (g));
+ return -1;
+ }
+ return 0;
+}
+
+";
+
(* Client-side stubs for each function. *)
List.iter (
fun (shortname, style, _, _, _, _, _) ->
let name = "guestfs_" ^ shortname in
- (* Generate the return value struct. *)
- pr "struct %s_rv {\n" shortname;
- pr " int cb_done; /* flag to indicate callback was called */\n";
+ (* Generate the context struct which stores the high-level
+ * state between callback functions.
+ *)
+ pr "struct %s_ctx {\n" shortname;
+ pr " /* This flag is set by the callbacks, so we know we've done\n";
+ pr " * the callbacks as expected, and in the right sequence.\n";
+ pr " * 0 = not called, 1 = send called,\n";
+ pr " * 1001 = reply called.\n";
+ pr " */\n";
+ pr " int cb_sequence;\n";
pr " struct guestfs_message_header hdr;\n";
pr " struct guestfs_message_error err;\n";
(match fst style with
| RHashtable _ ->
pr " struct %s_ret ret;\n" name
);
- pr "};\n\n";
+ pr "};\n";
+ pr "\n";
- (* Generate the callback function. *)
- pr "static void %s_cb (guestfs_h *g, void *data, XDR *xdr)\n" shortname;
+ (* Generate the reply callback function. *)
+ pr "static void %s_reply_cb (guestfs_h *g, void *data, XDR *xdr)\n" shortname;
pr "{\n";
- pr " struct %s_rv *rv = (struct %s_rv *) data;\n" shortname shortname;
+ pr " guestfs_main_loop *ml = guestfs_get_main_loop (g);\n";
+ pr " struct %s_ctx *ctx = (struct %s_ctx *) data;\n" shortname shortname;
+ pr "\n";
+ pr " ml->main_loop_quit (ml, g);\n";
pr "\n";
- pr " if (!xdr_guestfs_message_header (xdr, &rv->hdr)) {\n";
- pr " error (g, \"%s: failed to parse reply header\");\n" name;
+ pr " if (!xdr_guestfs_message_header (xdr, &ctx->hdr)) {\n";
+ pr " error (g, \"%%s: failed to parse reply header\", \"%s\");\n" name;
pr " return;\n";
pr " }\n";
- pr " if (rv->hdr.status == GUESTFS_STATUS_ERROR) {\n";
- pr " if (!xdr_guestfs_message_error (xdr, &rv->err)) {\n";
- pr " error (g, \"%s: failed to parse reply error\");\n" name;
+ pr " if (ctx->hdr.status == GUESTFS_STATUS_ERROR) {\n";
+ pr " if (!xdr_guestfs_message_error (xdr, &ctx->err)) {\n";
+ pr " error (g, \"%%s: failed to parse reply error\", \"%s\");\n"
+ name;
pr " return;\n";
pr " }\n";
pr " goto done;\n";
| RPVList _ | RVGList _ | RLVList _
| RStat _ | RStatVFS _
| RHashtable _ ->
- pr " if (!xdr_%s_ret (xdr, &rv->ret)) {\n" name;
- pr " error (g, \"%s: failed to parse reply\");\n" name;
+ pr " if (!xdr_%s_ret (xdr, &ctx->ret)) {\n" name;
+ pr " error (g, \"%%s: failed to parse reply\", \"%s\");\n" name;
pr " return;\n";
pr " }\n";
);
pr " done:\n";
- pr " rv->cb_done = 1;\n";
- pr " main_loop.main_loop_quit (g);\n";
+ pr " ctx->cb_sequence = 1001;\n";
pr "}\n\n";
(* Generate the action stub. *)
| _ -> pr " struct %s_args args;\n" name
);
- pr " struct %s_rv rv;\n" shortname;
+ pr " struct %s_ctx ctx;\n" shortname;
+ pr " guestfs_main_loop *ml = guestfs_get_main_loop (g);\n";
pr " int serial;\n";
pr "\n";
- pr " if (g->state != READY) {\n";
- pr " error (g, \"%s called from the wrong state, %%d != READY\",\n"
- name;
- pr " g->state);\n";
- pr " return %s;\n" error_code;
- pr " }\n";
+ pr " if (check_state (g, \"%s\") == -1) return %s;\n" name error_code;
+ pr " guestfs_set_busy (g);\n";
pr "\n";
- pr " memset (&rv, 0, sizeof rv);\n";
+ pr " memset (&ctx, 0, sizeof ctx);\n";
pr "\n";
+ (* Send the main header and arguments. *)
(match snd style with
| [] ->
- pr " serial = dispatch (g, GUESTFS_PROC_%s, NULL, NULL);\n"
+ pr " serial = guestfs__send_sync (g, GUESTFS_PROC_%s, NULL, NULL);\n"
(String.uppercase shortname)
| args ->
List.iter (
pr " args.%s = %s;\n" n n
| Int n ->
pr " args.%s = %s;\n" n n
+ | FileIn _ | FileOut _ -> ()
) args;
- pr " serial = dispatch (g, GUESTFS_PROC_%s,\n"
+ pr " serial = guestfs__send_sync (g, GUESTFS_PROC_%s,\n"
(String.uppercase shortname);
- pr " (xdrproc_t) xdr_%s_args, (char *) &args);\n"
+ pr " (xdrproc_t) xdr_%s_args, (char *) &args);\n"
name;
);
- pr " if (serial == -1)\n";
+ pr " if (serial == -1) {\n";
+ pr " guestfs_set_ready (g);\n";
pr " return %s;\n" error_code;
+ pr " }\n";
pr "\n";
- pr " rv.cb_done = 0;\n";
- pr " g->reply_cb_internal = %s_cb;\n" shortname;
- pr " g->reply_cb_internal_data = &rv;\n";
- pr " main_loop.main_loop_run (g);\n";
- pr " g->reply_cb_internal = NULL;\n";
- pr " g->reply_cb_internal_data = NULL;\n";
- pr " if (!rv.cb_done) {\n";
- pr " error (g, \"%s failed, see earlier error messages\");\n" name;
+ (* Send any additional files (FileIn) requested. *)
+ let need_read_reply_label = ref false in
+ List.iter (
+ function
+ | FileIn n ->
+ pr " {\n";
+ pr " int r;\n";
+ pr "\n";
+ pr " r = guestfs__send_file_sync (g, %s);\n" n;
+ pr " if (r == -1) {\n";
+ pr " guestfs_set_ready (g);\n";
+ pr " return %s;\n" error_code;
+ pr " }\n";
+ pr " if (r == -2) /* daemon cancelled */\n";
+ pr " goto read_reply;\n";
+ need_read_reply_label := true;
+ pr " }\n";
+ pr "\n";
+ | _ -> ()
+ ) (snd style);
+
+ (* Wait for the reply from the remote end. *)
+ if !need_read_reply_label then pr " read_reply:\n";
+ pr " guestfs__switch_to_receiving (g);\n";
+ pr " ctx.cb_sequence = 0;\n";
+ pr " guestfs_set_reply_callback (g, %s_reply_cb, &ctx);\n" shortname;
+ pr " (void) ml->main_loop_run (ml, g);\n";
+ pr " guestfs_set_reply_callback (g, NULL, NULL);\n";
+ pr " if (ctx.cb_sequence != 1001) {\n";
+ pr " error (g, \"%%s reply failed, see earlier error messages\", \"%s\");\n" name;
+ pr " guestfs_set_ready (g);\n";
pr " return %s;\n" error_code;
pr " }\n";
pr "\n";
- pr " if (check_reply_header (g, &rv.hdr, GUESTFS_PROC_%s, serial) == -1)\n"
+ pr " if (check_reply_header (g, &ctx.hdr, GUESTFS_PROC_%s, serial) == -1) {\n"
(String.uppercase shortname);
+ pr " guestfs_set_ready (g);\n";
pr " return %s;\n" error_code;
+ pr " }\n";
pr "\n";
- pr " if (rv.hdr.status == GUESTFS_STATUS_ERROR) {\n";
- pr " error (g, \"%%s\", rv.err.error);\n";
+ pr " if (ctx.hdr.status == GUESTFS_STATUS_ERROR) {\n";
+ pr " error (g, \"%%s\", ctx.err.error_message);\n";
+ pr " guestfs_set_ready (g);\n";
pr " return %s;\n" error_code;
pr " }\n";
pr "\n";
+ (* Expecting to receive further files (FileOut)? *)
+ List.iter (
+ function
+ | FileOut n ->
+ pr " if (guestfs__receive_file_sync (g, %s) == -1) {\n" n;
+ pr " guestfs_set_ready (g);\n";
+ pr " return %s;\n" error_code;
+ pr " }\n";
+ pr "\n";
+ | _ -> ()
+ ) (snd style);
+
+ pr " guestfs_set_ready (g);\n";
+
(match fst style with
| RErr -> pr " return 0;\n"
| RInt n | RInt64 n | RBool n ->
- pr " return rv.ret.%s;\n" n
+ pr " return ctx.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
+ pr " return ctx.ret.%s; /* caller will free */\n" n
| RStringList n | RHashtable n ->
pr " /* caller will free this, but we need to add a NULL entry */\n";
- pr " rv.ret.%s.%s_val =" n n;
- pr " safe_realloc (g, rv.ret.%s.%s_val,\n" n n;
- pr " sizeof (char *) * (rv.ret.%s.%s_len + 1));\n"
+ pr " ctx.ret.%s.%s_val =\n" n n;
+ pr " safe_realloc (g, ctx.ret.%s.%s_val,\n" n n;
+ pr " sizeof (char *) * (ctx.ret.%s.%s_len + 1));\n"
n n;
- pr " rv.ret.%s.%s_val[rv.ret.%s.%s_len] = NULL;\n" n n n n;
- pr " return rv.ret.%s.%s_val;\n" n n
+ pr " ctx.ret.%s.%s_val[ctx.ret.%s.%s_len] = NULL;\n" n n n n;
+ pr " return ctx.ret.%s.%s_val;\n" n n
| RIntBool _ ->
pr " /* caller with free this */\n";
- pr " return safe_memdup (g, &rv.ret, sizeof (rv.ret));\n"
+ pr " return safe_memdup (g, &ctx.ret, sizeof (ctx.ret));\n"
| RPVList n | RVGList n | RLVList n
| RStat n | RStatVFS n ->
pr " /* caller will free this */\n";
- pr " return safe_memdup (g, &rv.ret.%s, sizeof (rv.ret.%s));\n" n n
+ pr " return safe_memdup (g, &ctx.ret.%s, sizeof (ctx.ret.%s));\n" n n
);
pr "}\n\n"
| StringList n -> pr " char **%s;\n" n
| Bool n -> pr " int %s;\n" n
| Int n -> pr " int %s;\n" n
+ | FileIn _ | FileOut _ -> ()
) args
);
pr "\n";
pr " %s = args.%s.%s_val;\n" n n n
| Bool n -> pr " %s = args.%s;\n" n n
| Int n -> pr " %s = args.%s;\n" n n
+ | FileIn _ | FileOut _ -> ()
) args;
pr "\n"
);
+ (* Don't want to call the impl with any FileIn or FileOut
+ * parameters, since these go "outside" the RPC protocol.
+ *)
+ let argsnofile =
+ List.filter (function FileIn _ | FileOut _ -> false | _ -> true)
+ (snd style) in
pr " r = do_%s " name;
- generate_call_args style;
+ generate_call_args argsnofile;
pr ";\n";
pr " if (r == %s)\n" error_code;
pr " goto done;\n";
pr "\n";
- (match fst style with
- | RErr -> pr " reply (NULL, NULL);\n"
- | RInt n | RInt64 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 " reply ((xdrproc_t) &xdr_guestfs_%s_ret, (char *) &ret);\n" name;
- pr " free (r);\n"
- | RStringList n | RHashtable n ->
- pr " struct guestfs_%s_ret ret;\n" name;
- pr " ret.%s.%s_len = count_strings (r);\n" n n;
- pr " ret.%s.%s_val = r;\n" n n;
- pr " reply ((xdrproc_t) &xdr_guestfs_%s_ret, (char *) &ret);\n" name;
- pr " free_strings (r);\n"
- | RIntBool _ ->
- pr " reply ((xdrproc_t) xdr_guestfs_%s_ret, (char *) r);\n" name;
- pr " xdr_free ((xdrproc_t) xdr_guestfs_%s_ret, (char *) r);\n" name
- | RPVList n | RVGList n | RLVList n
- | RStat n | RStatVFS 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;
- pr " xdr_free ((xdrproc_t) xdr_guestfs_%s_ret, (char *) &ret);\n" name
+ (* If there are any FileOut parameters, then the impl must
+ * send its own reply.
+ *)
+ let no_reply =
+ List.exists (function FileOut _ -> true | _ -> false) (snd style) in
+ if no_reply then
+ pr " /* do_%s has already sent a reply */\n" name
+ else (
+ match fst style with
+ | RErr -> pr " reply (NULL, NULL);\n"
+ | RInt n | RInt64 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 " reply ((xdrproc_t) &xdr_guestfs_%s_ret, (char *) &ret);\n"
+ name;
+ pr " free (r);\n"
+ | RStringList n | RHashtable n ->
+ pr " struct guestfs_%s_ret ret;\n" name;
+ pr " ret.%s.%s_len = count_strings (r);\n" n n;
+ pr " ret.%s.%s_val = r;\n" n n;
+ pr " reply ((xdrproc_t) &xdr_guestfs_%s_ret, (char *) &ret);\n"
+ name;
+ pr " free_strings (r);\n"
+ | RIntBool _ ->
+ pr " reply ((xdrproc_t) xdr_guestfs_%s_ret, (char *) r);\n"
+ name;
+ pr " xdr_free ((xdrproc_t) xdr_guestfs_%s_ret, (char *) r);\n" name
+ | RPVList n | RVGList n | RLVList n
+ | RStat n | RStatVFS 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;
+ pr " xdr_free ((xdrproc_t) xdr_guestfs_%s_ret, (char *) &ret);\n"
+ name
);
(* Free the args. *)
pr " reply_with_error (\"%%s\", err);\n";
pr " free (out);\n";
pr " free (err);\n";
+ pr " free (ret);\n";
pr " return NULL;\n";
pr " }\n";
pr "\n";
| OptString _, _
| Int _, _
| Bool _, _ -> ()
+ | FileIn _, _ | FileOut _, _ -> ()
| StringList n, arg ->
pr " char *%s[] = {\n" n;
let strs = string_split " " arg in
(* Generate the parameters. *)
List.iter (
function
- | String _, arg -> pr ", \"%s\"" (c_quote arg)
+ | String _, arg
+ | FileIn _, arg | FileOut _, arg ->
+ pr ", \"%s\"" (c_quote arg)
| OptString _, arg ->
if arg = "NULL" then pr ", NULL" else pr ", \"%s\"" (c_quote arg)
| StringList n, _ ->
List.iter (
function
| String n
- | OptString n -> pr " const char *%s;\n" n
+ | OptString n
+ | FileIn n
+ | FileOut n -> pr " const char *%s;\n" n
| StringList n -> pr " char **%s;\n" n
| Bool n -> pr " int %s;\n" n
| Int n -> pr " int %s;\n" n
| OptString name ->
pr " %s = strcmp (argv[%d], \"\") != 0 ? argv[%d] : NULL;\n"
name i i
+ | FileIn name ->
+ pr " %s = strcmp (argv[%d], \"-\") != 0 ? argv[%d] : \"/dev/stdin\";\n"
+ name i i
+ | FileOut name ->
+ pr " %s = strcmp (argv[%d], \"-\") != 0 ? argv[%d] : \"/dev/stdout\";\n"
+ name i i
| StringList name ->
pr " %s = parse_string_list (argv[%d]);\n" name i
| Bool name ->
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;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
(* Check return value for errors and display command results. *)
| StringList n -> pr " %s,..." n
| Bool _ -> pr " true|false"
| Int n -> pr " %s" n
+ | FileIn n | FileOut n -> pr " (%s|-)" n
) (snd style);
pr "\n";
pr "\n";
pr "%s\n\n" longdesc;
+ if List.exists (function FileIn _ | FileOut _ -> true
+ | _ -> false) (snd style) then
+ pr "Use C<-> instead of a filename to read/write from stdin/stdout.\n\n";
+
if List.mem ProtocolLimitWarning flags then
pr "%s\n\n" protocol_limit_warning;
in
List.iter (
function
- | String n -> next (); pr "const char *%s" n
+ | String n
| OptString n -> next (); pr "const char *%s" n
| StringList n -> next (); pr "char * const* const %s" n
| Bool n -> next (); pr "int %s" n
| Int n -> next (); pr "int %s" n
+ | FileIn n
+ | FileOut n ->
+ if not in_daemon then (next (); pr "const char *%s" n)
) (snd style);
);
pr ")";
if newline then pr "\n"
(* Generate C call arguments, eg "(handle, foo, bar)" *)
-and generate_call_args ?handle style =
+and generate_call_args ?handle args =
pr "(";
let comma = ref false in
(match handle with
fun arg ->
if !comma then pr ", ";
comma := true;
- match arg with
- | String n
- | OptString n
- | StringList n
- | Bool n
- | Int n -> pr "%s" n
- ) (snd style);
+ pr "%s" (name_of_argt arg)
+ ) args;
pr ")"
(* Generate the OCaml bindings interface. *)
List.iter (
function
- | String n ->
+ | String n
+ | FileIn n
+ | FileOut n ->
pr " const char *%s = String_val (%sv);\n" n n
| OptString n ->
pr " const char *%s =\n" n;
pr " caml_enter_blocking_section ();\n";
pr " r = guestfs_%s " name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
pr " caml_leave_blocking_section ();\n";
function
| StringList n ->
pr " ocaml_guestfs_free_strings (%s);\n" n;
- | String _ | OptString _ | Bool _ | Int _ -> ()
+ | String _ | OptString _ | Bool _ | Int _ | FileIn _ | FileOut _ -> ()
) (snd style);
pr " if (r == %s)\n" error_code;
pr "%s : t -> " name;
List.iter (
function
- | String _ -> pr "string -> "
+ | String _ | FileIn _ | FileOut _ -> pr "string -> "
| OptString _ -> pr "string option -> "
| StringList _ -> pr "string array -> "
| Bool _ -> pr "bool -> "
);
(* Call and arguments. *)
pr "%s " name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr "\n";
pr " guestfs_h *g;\n";
List.iter (
function
- | String n -> pr " char *%s;\n" n
+ | String n | FileIn n | FileOut n -> pr " char *%s;\n" n
| OptString n -> pr " char *%s;\n" n
| StringList n -> pr " char **%s;\n" n
| Bool n -> pr " int %s;\n" n
let do_cleanups () =
List.iter (
function
- | String _
- | OptString _
- | Bool _
- | Int _ -> ()
+ | String _ | OptString _ | Bool _ | Int _
+ | FileIn _ | FileOut _ -> ()
| StringList n -> pr " free (%s);\n" n
) (snd style)
in
pr " int r;\n";
pr " PPCODE:\n";
pr " r = guestfs_%s " name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (r == -1)\n";
pr " int %s;\n" n;
pr " CODE:\n";
pr " %s = guestfs_%s " n name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (%s == -1)\n" n;
pr " int64_t %s;\n" n;
pr " CODE:\n";
pr " %s = guestfs_%s " n name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (%s == -1)\n" n;
pr " const char *%s;\n" n;
pr " CODE:\n";
pr " %s = guestfs_%s " n name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (%s == NULL)\n" n;
pr " char *%s;\n" n;
pr " CODE:\n";
pr " %s = guestfs_%s " n name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (%s == NULL)\n" n;
pr " int i, n;\n";
pr " PPCODE:\n";
pr " %s = guestfs_%s " n name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (%s == NULL)\n" n;
pr " struct guestfs_int_bool *r;\n";
pr " PPCODE:\n";
pr " r = guestfs_%s " name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (r == NULL)\n";
pr " HV *hv;\n";
pr " PPCODE:\n";
pr " %s = guestfs_%s " n name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (%s == NULL)\n" n;
pr " struct guestfs_%s *%s;\n" typ n;
pr " PPCODE:\n";
pr " %s = guestfs_%s " n name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
do_cleanups ();
pr " if (%s == NULL)\n" n;
if !comma then pr ", ";
comma := true;
match arg with
- | String n | OptString n | Bool n | Int n ->
+ | String n | OptString n | Bool n | Int n | FileIn n | FileOut n ->
pr "$%s" n
| StringList n ->
pr "\\@%s" n
list = PyList_New (argc >> 1);
for (i = 0; i < argc; i += 2) {
- PyObject *item;
item = PyTuple_New (2);
PyTuple_SetItem (item, 0, PyString_FromString (argv[i]));
PyTuple_SetItem (item, 1, PyString_FromString (argv[i+1]));
List.iter (
function
- | String n -> pr " const char *%s;\n" n
+ | String n | FileIn n | FileOut n -> pr " const char *%s;\n" n
| OptString n -> pr " const char *%s;\n" n
| StringList n ->
pr " PyObject *py_%s;\n" n;
pr " if (!PyArg_ParseTuple (args, (char *) \"O";
List.iter (
function
- | String _ -> pr "s"
+ | String _ | FileIn _ | FileOut _ -> pr "s"
| OptString _ -> pr "z"
| StringList _ -> pr "O"
| Bool _ -> pr "i" (* XXX Python has booleans? *)
pr " &py_g";
List.iter (
function
- | String n -> pr ", &%s" n
+ | String n | FileIn n | FileOut n -> pr ", &%s" n
| OptString n -> pr ", &%s" n
| StringList n -> pr ", &py_%s" n
| Bool n -> pr ", &%s" n
pr " g = get_handle (py_g);\n";
List.iter (
function
- | String _ | OptString _ | Bool _ | Int _ -> ()
+ | String _ | FileIn _ | FileOut _ | OptString _ | Bool _ | Int _ -> ()
| StringList n ->
pr " %s = get_string_list (py_%s);\n" n n;
pr " if (!%s) return NULL;\n" n
pr "\n";
pr " r = guestfs_%s " name;
- generate_call_args ~handle:"g" style;
+ generate_call_args ~handle:"g" (snd style);
pr ";\n";
List.iter (
function
- | String _ | OptString _ | Bool _ | Int _ -> ()
+ | String _ | FileIn _ | FileOut _ | OptString _ | Bool _ | Int _ -> ()
| StringList n ->
pr " free (%s);\n" n
) (snd style);
and generate_python_py () =
generate_header HashStyle LGPLv2;
- pr "import libguestfsmod\n";
- pr "\n";
- pr "class GuestFS:\n";
- pr " def __init__ (self):\n";
- pr " self._o = libguestfsmod.create ()\n";
- pr "\n";
- pr " def __del__ (self):\n";
- pr " libguestfsmod.close (self._o)\n";
- pr "\n";
+ pr "\
+u\"\"\"Python bindings for libguestfs
+
+import guestfs
+g = guestfs.GuestFS ()
+g.add_drive (\"guest.img\")
+g.launch ()
+g.wait_ready ()
+parts = g.list_partitions ()
+
+The guestfs module provides a Python binding to the libguestfs API
+for examining and modifying virtual machine disk images.
+
+Amongst the things this is good for: making batch configuration
+changes to guests, getting disk used/free statistics (see also:
+virt-df), migrating between virtualization systems (see also:
+virt-p2v), performing partial backups, performing partial guest
+clones, cloning guests and changing registry/UUID/hostname info, and
+much else besides.
+
+Libguestfs uses Linux kernel and qemu code, and can access any type of
+guest filesystem that Linux and qemu can, including but not limited
+to: ext2/3/4, btrfs, FAT and NTFS, LVM, many different disk partition
+schemes, qcow, qcow2, vmdk.
+
+Libguestfs provides ways to enumerate guest storage (eg. partitions,
+LVs, what filesystem is in each LV, etc.). It can also run commands
+in the context of the guest. Also you can access filesystems over FTP.
+
+Errors which happen while using the API are turned into Python
+RuntimeError exceptions.
+
+To create a guestfs handle you usually have to perform the following
+sequence of calls:
+
+# Create the handle, call add_drive at least once, and possibly
+# several times if the guest has multiple block devices:
+g = guestfs.GuestFS ()
+g.add_drive (\"guest.img\")
+
+# Launch the qemu subprocess and wait for it to become ready:
+g.launch ()
+g.wait_ready ()
+
+# Now you can issue commands, for example:
+logvols = g.lvs ()
+
+\"\"\"
+
+import libguestfsmod
+
+class GuestFS:
+ \"\"\"Instances of this class are libguestfs API handles.\"\"\"
+
+ def __init__ (self):
+ \"\"\"Create a new libguestfs handle.\"\"\"
+ self._o = libguestfsmod.create ()
+
+ def __del__ (self):
+ libguestfsmod.close (self._o)
+
+";
List.iter (
- fun (name, style, _, _, _, _, _) ->
+ fun (name, style, _, flags, _, _, longdesc) ->
+ let doc = replace_str longdesc "C<guestfs_" "C<g." in
+ let doc =
+ match fst style with
+ | RErr | RInt _ | RInt64 _ | RBool _ | RConstString _
+ | RString _ -> doc
+ | RStringList _ ->
+ doc ^ "\n\nThis function returns a list of strings."
+ | RIntBool _ ->
+ doc ^ "\n\nThis function returns a tuple (int, bool).\n"
+ | RPVList _ ->
+ doc ^ "\n\nThis function returns a list of PVs. Each PV is represented as a dictionary."
+ | RVGList _ ->
+ doc ^ "\n\nThis function returns a list of VGs. Each VG is represented as a dictionary."
+ | RLVList _ ->
+ doc ^ "\n\nThis function returns a list of LVs. Each LV is represented as a dictionary."
+ | RStat _ ->
+ doc ^ "\n\nThis function returns a dictionary, with keys matching the various fields in the stat structure."
+ | RStatVFS _ ->
+ doc ^ "\n\nThis function returns a dictionary, with keys matching the various fields in the statvfs structure."
+ | RHashtable _ ->
+ doc ^ "\n\nThis function returns a dictionary." in
+ let doc =
+ if List.mem ProtocolLimitWarning flags then
+ doc ^ "\n\n" ^ protocol_limit_warning
+ else doc in
+ let doc =
+ if List.mem DangerWillRobinson flags then
+ doc ^ "\n\n" ^ danger_will_robinson
+ else doc in
+ let doc = pod2text ~width:60 name doc in
+ let doc = List.map (fun line -> replace_str line "\\" "\\\\") doc in
+ let doc = String.concat "\n " doc in
+
pr " def %s " name;
- generate_call_args ~handle:"self" style;
+ generate_call_args ~handle:"self" (snd style);
pr ":\n";
+ pr " u\"\"\"%s\"\"\"\n" doc;
pr " return libguestfsmod.%s " name;
- generate_call_args ~handle:"self._o" style;
+ generate_call_args ~handle:"self._o" (snd style);
pr "\n";
pr "\n";
) all_functions
+(* Useful if you need the longdesc POD text as plain text. Returns a
+ * list of lines.
+ *)
+and pod2text ~width name longdesc =
+ let filename, chan = Filename.open_temp_file "gen" ".tmp" in
+ fprintf chan "=head1 %s\n\n%s\n" name longdesc;
+ close_out chan;
+ let cmd = sprintf "pod2text -w %d %s" width (Filename.quote filename) in
+ let chan = Unix.open_process_in cmd in
+ let lines = ref [] in
+ let rec loop i =
+ let line = input_line chan in
+ if i = 1 then (* discard the first line of output *)
+ loop (i+1)
+ else (
+ let line = triml line in
+ lines := line :: !lines;
+ loop (i+1)
+ ) in
+ let lines = try loop 1 with End_of_file -> List.rev !lines in
+ Unix.unlink filename;
+ match Unix.close_process_in chan with
+ | Unix.WEXITED 0 -> lines
+ | Unix.WEXITED i ->
+ failwithf "pod2text: process exited with non-zero status (%d)" i
+ | Unix.WSIGNALED i | Unix.WSTOPPED i ->
+ failwithf "pod2text: process signalled or stopped by signal %d" i
+
+(* Generate ruby bindings. *)
+and generate_ruby_c () =
+ generate_header CStyle LGPLv2;
+
+ pr "\
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <ruby.h>
+
+#include \"guestfs.h\"
+
+#include \"extconf.h\"
+
+static VALUE m_guestfs; /* guestfs module */
+static VALUE c_guestfs; /* guestfs_h handle */
+static VALUE e_Error; /* used for all errors */
+
+static void ruby_guestfs_free (void *p)
+{
+ if (!p) return;
+ guestfs_close ((guestfs_h *) p);
+}
+
+static VALUE ruby_guestfs_create (VALUE m)
+{
+ guestfs_h *g;
+
+ g = guestfs_create ();
+ if (!g)
+ rb_raise (e_Error, \"failed to create guestfs handle\");
+
+ /* Don't print error messages to stderr by default. */
+ guestfs_set_error_handler (g, NULL, NULL);
+
+ /* Wrap it, and make sure the close function is called when the
+ * handle goes away.
+ */
+ return Data_Wrap_Struct (c_guestfs, NULL, ruby_guestfs_free, g);
+}
+
+static VALUE ruby_guestfs_close (VALUE gv)
+{
+ guestfs_h *g;
+ Data_Get_Struct (gv, guestfs_h, g);
+
+ ruby_guestfs_free (g);
+ DATA_PTR (gv) = NULL;
+
+ return Qnil;
+}
+
+";
+
+ List.iter (
+ fun (name, style, _, _, _, _, _) ->
+ pr "static VALUE ruby_guestfs_%s (VALUE gv" name;
+ List.iter (fun arg -> pr ", VALUE %sv" (name_of_argt arg)) (snd style);
+ pr ")\n";
+ pr "{\n";
+ pr " guestfs_h *g;\n";
+ pr " Data_Get_Struct (gv, guestfs_h, g);\n";
+ pr " if (!g)\n";
+ pr " rb_raise (rb_eArgError, \"%%s: used handle after closing it\", \"%s\");\n"
+ name;
+ pr "\n";
+
+ List.iter (
+ function
+ | String n | FileIn n | FileOut n ->
+ pr " const char *%s = StringValueCStr (%sv);\n" n n;
+ pr " if (!%s)\n" n;
+ pr " rb_raise (rb_eTypeError, \"expected string for parameter %%s of %%s\",\n";
+ pr " \"%s\", \"%s\");\n" n name
+ | OptString n ->
+ pr " const char *%s = StringValueCStr (%sv);\n" n n
+ | StringList n ->
+ pr " char **%s;" n;
+ pr " {\n";
+ pr " int i, len;\n";
+ pr " len = RARRAY_LEN (%sv);\n" n;
+ pr " %s = malloc (sizeof (char *) * (len+1));\n" n;
+ pr " for (i = 0; i < len; ++i) {\n";
+ pr " VALUE v = rb_ary_entry (%sv, i);\n" n;
+ pr " %s[i] = StringValueCStr (v);\n" n;
+ pr " }\n";
+ pr " }\n";
+ | Bool n
+ | Int n ->
+ pr " int %s = NUM2INT (%sv);\n" n n
+ ) (snd style);
+ pr "\n";
+
+ let error_code =
+ match fst style with
+ | RErr | RInt _ | RBool _ -> pr " int r;\n"; "-1"
+ | RInt64 _ -> pr " int64_t r;\n"; "-1"
+ | RConstString _ -> pr " const char *r;\n"; "NULL"
+ | RString _ -> pr " char *r;\n"; "NULL"
+ | RStringList _ | RHashtable _ -> pr " char **r;\n"; "NULL"
+ | RIntBool _ -> pr " struct guestfs_int_bool *r;\n"; "NULL"
+ | RPVList n -> pr " struct guestfs_lvm_pv_list *r;\n"; "NULL"
+ | RVGList n -> pr " struct guestfs_lvm_vg_list *r;\n"; "NULL"
+ | RLVList n -> pr " struct guestfs_lvm_lv_list *r;\n"; "NULL"
+ | RStat n -> pr " struct guestfs_stat *r;\n"; "NULL"
+ | RStatVFS n -> pr " struct guestfs_statvfs *r;\n"; "NULL" in
+ pr "\n";
+
+ pr " r = guestfs_%s " name;
+ generate_call_args ~handle:"g" (snd style);
+ pr ";\n";
+
+ List.iter (
+ function
+ | String _ | FileIn _ | FileOut _ | OptString _ | Bool _ | Int _ -> ()
+ | StringList n ->
+ pr " free (%s);\n" n
+ ) (snd style);
+
+ pr " if (r == %s)\n" error_code;
+ pr " rb_raise (e_Error, \"%%s\", guestfs_last_error (g));\n";
+ pr "\n";
+
+ (match fst style with
+ | RErr ->
+ pr " return Qnil;\n"
+ | RInt _ | RBool _ ->
+ pr " return INT2NUM (r);\n"
+ | RInt64 _ ->
+ pr " return ULL2NUM (r);\n"
+ | RConstString _ ->
+ pr " return rb_str_new2 (r);\n";
+ | RString _ ->
+ pr " VALUE rv = rb_str_new2 (r);\n";
+ pr " free (r);\n";
+ pr " return rv;\n";
+ | RStringList _ ->
+ pr " int i, len = 0;\n";
+ pr " for (i = 0; r[i] != NULL; ++i) len++;\n";
+ pr " VALUE rv = rb_ary_new2 (len);\n";
+ pr " for (i = 0; r[i] != NULL; ++i) {\n";
+ pr " rb_ary_push (rv, rb_str_new2 (r[i]));\n";
+ pr " free (r[i]);\n";
+ pr " }\n";
+ pr " free (r);\n";
+ pr " return rv;\n"
+ | RIntBool _ ->
+ pr " VALUE rv = rb_ary_new2 (2);\n";
+ pr " rb_ary_push (rv, INT2NUM (r->i));\n";
+ pr " rb_ary_push (rv, INT2NUM (r->b));\n";
+ pr " guestfs_free_int_bool (r);\n";
+ pr " return rv;\n"
+ | RPVList n ->
+ generate_ruby_lvm_code "pv" pv_cols
+ | RVGList n ->
+ generate_ruby_lvm_code "vg" vg_cols
+ | RLVList n ->
+ generate_ruby_lvm_code "lv" lv_cols
+ | RStat n ->
+ pr " VALUE rv = rb_hash_new ();\n";
+ List.iter (
+ function
+ | name, `Int ->
+ pr " rb_hash_aset (rv, rb_str_new2 (\"%s\"), ULL2NUM (r->%s));\n" name name
+ ) stat_cols;
+ pr " free (r);\n";
+ pr " return rv;\n"
+ | RStatVFS n ->
+ pr " VALUE rv = rb_hash_new ();\n";
+ List.iter (
+ function
+ | name, `Int ->
+ pr " rb_hash_aset (rv, rb_str_new2 (\"%s\"), ULL2NUM (r->%s));\n" name name
+ ) statvfs_cols;
+ pr " free (r);\n";
+ pr " return rv;\n"
+ | RHashtable _ ->
+ pr " VALUE rv = rb_hash_new ();\n";
+ pr " int i;\n";
+ pr " for (i = 0; r[i] != NULL; i+=2) {\n";
+ pr " rb_hash_aset (rv, rb_str_new2 (r[i]), rb_str_new2 (r[i+1]));\n";
+ pr " free (r[i]);\n";
+ pr " free (r[i+1]);\n";
+ pr " }\n";
+ pr " free (r);\n";
+ pr " return rv;\n"
+ );
+
+ pr "}\n";
+ pr "\n"
+ ) all_functions;
+
+ pr "\
+/* Initialize the module. */
+void Init__guestfs ()
+{
+ m_guestfs = rb_define_module (\"Guestfs\");
+ c_guestfs = rb_define_class_under (m_guestfs, \"Guestfs\", rb_cObject);
+ e_Error = rb_define_class_under (m_guestfs, \"Error\", rb_eStandardError);
+
+ rb_define_module_function (m_guestfs, \"create\", ruby_guestfs_create, 0);
+ rb_define_method (c_guestfs, \"close\", ruby_guestfs_close, 0);
+
+";
+ (* Define the rest of the methods. *)
+ List.iter (
+ fun (name, style, _, _, _, _, _) ->
+ pr " rb_define_method (c_guestfs, \"%s\",\n" name;
+ pr " ruby_guestfs_%s, %d);\n" name (List.length (snd style))
+ ) all_functions;
+
+ pr "}\n"
+
+(* Ruby code to return an LVM struct list. *)
+and generate_ruby_lvm_code typ cols =
+ pr " VALUE rv = rb_ary_new2 (r->len);\n";
+ pr " int i;\n";
+ pr " for (i = 0; i < r->len; ++i) {\n";
+ pr " VALUE hv = rb_hash_new ();\n";
+ List.iter (
+ function
+ | name, `String ->
+ pr " rb_hash_aset (rv, rb_str_new2 (\"%s\"), rb_str_new2 (r->val[i].%s));\n" name name
+ | name, `UUID ->
+ pr " rb_hash_aset (rv, rb_str_new2 (\"%s\"), rb_str_new (r->val[i].%s, 32));\n" name name
+ | name, `Bytes
+ | name, `Int ->
+ pr " rb_hash_aset (rv, rb_str_new2 (\"%s\"), ULL2NUM (r->val[i].%s));\n" name name
+ | name, `OptPercent ->
+ pr " rb_hash_aset (rv, rb_str_new2 (\"%s\"), rb_dbl2big (r->val[i].%s));\n" name name
+ ) cols;
+ pr " rb_ary_push (rv, hv);\n";
+ pr " }\n";
+ pr " guestfs_free_lvm_%s_list (r);\n" typ;
+ pr " return rv;\n"
+
let output_to filename =
let filename_new = filename ^ ".new" in
chan := open_out filename_new;
let close = output_to "python/guestfs.py" in
generate_python_py ();
close ();
+
+ let close = output_to "ruby/ext/guestfs/_guestfs.c" in
+ generate_ruby_c ();
+ close ();