(* This script generates a large amount of code and documentation for
* all the daemon actions.
- *
+ *
* To add a new action there are only two files you need to change,
* this one to describe the interface (see the big table of
* 'daemon_functions' below), and daemon/<somefile>.c to write the
* implementation.
- *
+ *
* After editing this file, run it (./src/generator.ml) to regenerate
* all the output files. 'make' will rerun this automatically when
* necessary. Note that if you are using a separate build directory
* you must run generator.ml from the _source_ directory.
- *
+ *
* IMPORTANT: This script should NOT print any warnings. If it prints
* warnings, you should treat them as errors.
*
#load "unix.cma";;
#load "str.cma";;
#directory "+xml-light";;
+#directory "+../pkg-lib/xml-light";; (* for GODI users *)
#load "xml-light.cma";;
open Unix
changes to be committed, although qemu can support this.
This is equivalent to the qemu parameter
-C<-drive file=filename,snapshot=on,if=...>.
+C<-drive file=filename,snapshot=on,readonly=on,if=...>.
C<if=...> is set at compile time by the configuration option
C<./configure --with-drive-if=...>. In the rare case where you
might need to change this at run time, use C<guestfs_add_drive_with_if>
or C<guestfs_add_drive_ro_with_if>.
+C<readonly=on> is only added where qemu supports this option.
+
Note that this call checks for the existence of C<filename>. This
stops you from specifying other types of drive which are supported
by qemu such as C<nbd:> and C<http:> URLs. To specify those, use
You can also override this by setting the C<LIBGUESTFS_QEMU>
environment variable.
-Setting C<qemu> to C<NULL> restores the default qemu binary.");
+Setting C<qemu> to C<NULL> restores the default qemu binary.
+
+Note that you should call this function as early as possible
+after creating the handle. This is because some pre-launch
+operations depend on testing qemu features (by running C<qemu -help>).
+If the qemu binary changes, we don't retest features, and
+so you might see inconsistent results. Using the environment
+variable C<LIBGUESTFS_QEMU> is safest of all since that picks
+the qemu binary at the same time as the handle is created.");
("get_qemu", (RConstString "qemu", []), -1, [],
[InitNone, Always, TestRun (
This command uploads and unpacks local file C<tarfile> (an
I<uncompressed> tar file) into C<directory>.
-To upload a compressed tarball, use C<guestfs_tgz_in>.");
+To upload a compressed tarball, use C<guestfs_tgz_in>
+or C<guestfs_txz_in>.");
("tar_out", (RErr, [String "directory"; FileOut "tarfile"]), 70, [],
[],
This command packs the contents of C<directory> and downloads
it to local file C<tarfile>.
-To download a compressed tarball, use C<guestfs_tgz_out>.");
+To download a compressed tarball, use C<guestfs_tgz_out>
+or C<guestfs_txz_out>.");
("tgz_in", (RErr, [FileIn "tarball"; String "directory"]), 71, [],
[InitBasicFS, Always, TestOutput (
to securely wipe the device). It should be sufficient to remove
any partition tables, filesystem superblocks and so on.
-See also: C<guestfs_scrub_device>.");
+See also: C<guestfs_zero_device>, C<guestfs_scrub_device>.");
("grub_install", (RErr, [Pathname "root"; Device "device"]), 86, [],
(* Test disabled because grub-install incompatible with virtio-blk driver.
If the destination is a device, it must be as large or larger
than the source file or device, otherwise the copy will fail.
-This command cannot do partial copies.");
+This command cannot do partial copies (see C<guestfs_copy_size>).");
("filesize", (RInt64 "size", [Pathname "file"]), 218, [],
[InitBasicFS, Always, TestOutputInt (
"\
Rename a volume group C<volgroup> with the new name C<newvolgroup>.");
- ("initrd_cat", (RBufferOut "content", [Pathname "initrdpath"; String "filename"]), 221, [],
+ ("initrd_cat", (RBufferOut "content", [Pathname "initrdpath"; String "filename"]), 221, [ProtocolLimitWarning],
[InitISOFS, Always, TestOutputBuffer (
[["initrd_cat"; "/initrd"; "known-4"]], "abc\ndef\nghi")],
"list the contents of a single file in an initrd",
See also C<guestfs_initrd_list>.");
+ ("pvuuid", (RString "uuid", [Device "device"]), 222, [],
+ [],
+ "get the UUID of a physical volume",
+ "\
+This command returns the UUID of the LVM PV C<device>.");
+
+ ("vguuid", (RString "uuid", [String "vgname"]), 223, [],
+ [],
+ "get the UUID of a volume group",
+ "\
+This command returns the UUID of the LVM VG named C<vgname>.");
+
+ ("lvuuid", (RString "uuid", [Device "device"]), 224, [],
+ [],
+ "get the UUID of a logical volume",
+ "\
+This command returns the UUID of the LVM LV C<device>.");
+
+ ("vgpvuuids", (RStringList "uuids", [String "vgname"]), 225, [],
+ [],
+ "get the PV UUIDs containing the volume group",
+ "\
+Given a VG called C<vgname>, this returns the UUIDs of all
+the physical volumes that this volume group resides on.
+
+You can use this along with C<guestfs_pvs> and C<guestfs_pvuuid>
+calls to associate physical volumes and volume groups.
+
+See also C<guestfs_vglvuuids>.");
+
+ ("vglvuuids", (RStringList "uuids", [String "vgname"]), 226, [],
+ [],
+ "get the LV UUIDs of all LVs in the volume group",
+ "\
+Given a VG called C<vgname>, this returns the UUIDs of all
+the logical volumes created in this volume group.
+
+You can use this along with C<guestfs_lvs> and C<guestfs_lvuuid>
+calls to associate logical volumes and volume groups.
+
+See also C<guestfs_vgpvuuids>.");
+
+ ("copy_size", (RErr, [Dev_or_Path "src"; Dev_or_Path "dest"; Int64 "size"]), 227, [],
+ [InitBasicFS, Always, TestOutputBuffer (
+ [["write_file"; "/src"; "hello, world"; "0"];
+ ["copy_size"; "/src"; "/dest"; "5"];
+ ["read_file"; "/dest"]], "hello")],
+ "copy size bytes from source to destination using dd",
+ "\
+This command copies exactly C<size> bytes from one source device
+or file C<src> to another destination device or file C<dest>.
+
+Note this will fail if the source is too short or if the destination
+is not large enough.");
+
+ ("zero_device", (RErr, [Device "device"]), 228, [DangerWillRobinson],
+ [InitBasicFSonLVM, Always, TestRun (
+ [["zero_device"; "/dev/VG/LV"]])],
+ "write zeroes to an entire device",
+ "\
+This command writes zeroes over the entire C<device>. Compare
+with C<guestfs_zero> which just zeroes the first few blocks of
+a device.");
+
+ ("txz_in", (RErr, [FileIn "tarball"; String "directory"]), 229, [],
+ [InitBasicFS, Always, TestOutput (
+ [["txz_in"; "../images/helloworld.tar.xz"; "/"];
+ ["cat"; "/hello"]], "hello\n")],
+ "unpack compressed tarball to directory",
+ "\
+This command uploads and unpacks local file C<tarball> (an
+I<xz compressed> tar file) into C<directory>.");
+
+ ("txz_out", (RErr, [Pathname "directory"; FileOut "tarball"]), 230, [],
+ [],
+ "pack directory into compressed tarball",
+ "\
+This command packs the contents of C<directory> and downloads
+it to local file C<tarball> (as an xz compressed tar archive).");
+
]
let all_functions = non_daemon_functions @ daemon_functions
(* Handling for function flags. *)
let protocol_limit_warning =
"Because of the message protocol, there is a transfer limit
-of somewhere between 2MB and 4MB. To transfer large files you should use
-FTP."
+of somewhere between 2MB and 4MB. See L<guestfs(3)/PROTOCOL LIMITS>."
let danger_will_robinson =
"B<This command is dangerous. Without careful use you
(* Having to choose a maximum message size is annoying for several
* reasons (it limits what we can do in the API), but it (a) makes
* the protocol a lot simpler, and (b) provides a bound on the size
- * of the daemon which operates in limited memory space. For large
- * file transfers you should use FTP.
+ * of the daemon which operates in limited memory space.
*)
pr "const GUESTFS_MESSAGE_MAX = %d;\n" (4 * 1024 * 1024);
pr "\n";
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
+#include <string.h>
#include <inttypes.h>
#include \"guestfs.h\"
pr " ret->guestfs_int_lvm_%s_list_val = NULL;\n" typ;
pr "\n";
pr " r = command (&out, &err,\n";
- pr " \"/sbin/lvm\", \"%ss\",\n" typ;
+ pr " \"lvm\", \"%ss\",\n" typ;
pr " \"-o\", lvm_%s_cols, \"--unbuffered\", \"--noheadings\",\n" typ;
pr " \"--nosuffix\", \"--separator\", \",\", \"--units\", \"b\", NULL);\n";
pr " if (r == -1) {\n";
exit (EXIT_FAILURE);
}
+ /* Set a timeout in case qemu hangs during launch (RHBZ#505329). */
+ alarm (600);
+
if (guestfs_launch (g) == -1) {
printf (\"guestfs_launch FAILED\\n\");
exit (EXIT_FAILURE);
}
- /* Set a timeout in case qemu hangs during launch (RHBZ#505329). */
- alarm (600);
-
/* Cancel previous alarm. */
alarm (0);
| Bool _, _
| FileIn _, _ | FileOut _, _ -> ()
| StringList n, "" | DeviceList n, "" ->
- pr " const char *const %s[1] = { NULL };\n" n
+ pr " const char *const %s[1] = { NULL };\n" n
| StringList n, arg | DeviceList n, arg ->
let strs = string_split " " arg in
iteri (
and comment =
"The Int type in the generator is a signed 31 bit int." in
Some (min, max, comment) in
- parse_integer "xstrtol" "long" "int" range name i
+ parse_integer "xstrtoll" "long long" "int" range name i
| Int64 name ->
parse_integer "xstrtoll" "long long" "int64_t" None name i
) (snd style);
) all_functions;
pr " {\n";
pr " fprintf (stderr, _(\"%%s: unknown command\\n\"), cmd);\n";
+ pr " if (command_num == 1)\n";
+ pr " extended_help_message ();\n";
pr " return -1;\n";
pr " }\n";
pr " return 0;\n";
#endif /* HAVE_LIBREADLINE */
-char **do_completion (const char *text, int start, int end)
+#ifdef HAVE_RL_COMPLETION_MATCHES
+#define RL_COMPLETION_MATCHES rl_completion_matches
+#else
+#ifdef HAVE_COMPLETION_MATCHES
+#define RL_COMPLETION_MATCHES completion_matches
+#endif
+#endif /* else just fail if we don't have either symbol */
+
+char **
+do_completion (const char *text, int start, int end)
{
char **matches = NULL;
rl_completion_append_character = ' ';
if (start == 0)
- matches = rl_completion_matches (text, generator);
+ matches = RL_COMPLETION_MATCHES (text, generator);
else if (complete_dest_paths)
- matches = rl_completion_matches (text, complete_dest_paths_generator);
+ matches = RL_COMPLETION_MATCHES (text, complete_dest_paths_generator);
#endif
return matches;
do_cleanups ();
pr " if (%s == NULL)\n" n;
pr " croak (\"%%s\", guestfs_last_error (g));\n";
- pr " RETVAL = newSVpv (%s, size);\n" n;
+ pr " RETVAL = newSVpvn (%s, size);\n" n;
pr " free (%s);\n" n;
pr " OUTPUT:\n";
pr " RETVAL\n"
pr " (void) hv_store (hv, \"%s\", %d, newSVpv (%s->val[i].%s, 32), 0);\n"
name (String.length name) n name
| name, FBuffer ->
- pr " (void) hv_store (hv, \"%s\", %d, newSVpv (%s->val[i].%s, %s->val[i].%s_len), 0);\n"
+ pr " (void) hv_store (hv, \"%s\", %d, newSVpvn (%s->val[i].%s, %s->val[i].%s_len), 0);\n"
name (String.length name) n name n name
| name, (FBytes|FUInt64) ->
pr " (void) hv_store (hv, \"%s\", %d, my_newSVull (%s->val[i].%s), 0);\n"
pr " PUSHs (sv_2mortal (newSVpv (%s->%s, 0)));\n"
n name
| name, FBuffer ->
- pr " PUSHs (sv_2mortal (newSVpv (%s->%s, %s->%s_len)));\n"
+ pr " PUSHs (sv_2mortal (newSVpvn (%s->%s, %s->%s_len)));\n"
n name n name
| name, FUUID ->
pr " PUSHs (sv_2mortal (newSVpv (%s->%s, 32)));\n"
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.
+in the context of the guest. Also you can access filesystems over
+FUSE.
See also L<Sys::Guestfs::Lib(3)> for a set of useful library
functions for using libguestfs from Perl, including integration
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.
+in the context of the guest. Also you can access filesystems over
+FUSE.
Errors which happen while using the API are turned into Python
RuntimeError exceptions.
List.iter (
fun (name, style, _, _, _, shortdesc, _) ->
let rec csharp_return_type () =
- match fst style with
- | RErr -> "void"
- | RBool n -> "bool"
- | RInt n -> "int"
- | RInt64 n -> "long"
- | RConstString n
- | RConstOptString n
- | RString n
- | RBufferOut n -> "string"
- | RStruct (_,n) -> "_" ^ n
- | RHashtable n -> "Hashtable"
- | RStringList n -> "string[]"
- | RStructList (_,n) -> sprintf "_%s[]" n
+ match fst style with
+ | RErr -> "void"
+ | RBool n -> "bool"
+ | RInt n -> "int"
+ | RInt64 n -> "long"
+ | RConstString n
+ | RConstOptString n
+ | RString n
+ | RBufferOut n -> "string"
+ | RStruct (_,n) -> "_" ^ n
+ | RHashtable n -> "Hashtable"
+ | RStringList n -> "string[]"
+ | RStructList (_,n) -> sprintf "_%s[]" n
and c_return_type () =
- match fst style with
- | RErr
- | RBool _
- | RInt _ -> "int"
- | RInt64 _ -> "long"
- | RConstString _
- | RConstOptString _
- | RString _
- | RBufferOut _ -> "string"
- | RStruct (_,n) -> "_" ^ n
- | RHashtable _
- | RStringList _ -> "string[]"
- | RStructList (_,n) -> sprintf "_%s[]" n
-
+ match fst style with
+ | RErr
+ | RBool _
+ | RInt _ -> "int"
+ | RInt64 _ -> "long"
+ | RConstString _
+ | RConstOptString _
+ | RString _
+ | RBufferOut _ -> "string"
+ | RStruct (_,n) -> "_" ^ n
+ | RHashtable _
+ | RStringList _ -> "string[]"
+ | RStructList (_,n) -> sprintf "_%s[]" n
+
and c_error_comparison () =
- match fst style with
- | RErr
- | RBool _
- | RInt _
- | RInt64 _ -> "== -1"
- | RConstString _
- | RConstOptString _
- | RString _
- | RBufferOut _
- | RStruct (_,_)
- | RHashtable _
- | RStringList _
- | RStructList (_,_) -> "== null"
-
+ match fst style with
+ | RErr
+ | RBool _
+ | RInt _
+ | RInt64 _ -> "== -1"
+ | RConstString _
+ | RConstOptString _
+ | RString _
+ | RBufferOut _
+ | RStruct (_,_)
+ | RHashtable _
+ | RStringList _
+ | RStructList (_,_) -> "== null"
+
and generate_extern_prototype () =
- pr " static extern %s guestfs_%s (IntPtr h"
- (c_return_type ()) name;
- List.iter (
- function
- | Pathname n | Device n | Dev_or_Path n | String n | OptString n
- | FileIn n | FileOut n ->
+ pr " static extern %s guestfs_%s (IntPtr h"
+ (c_return_type ()) name;
+ List.iter (
+ function
+ | Pathname n | Device n | Dev_or_Path n | String n | OptString n
+ | FileIn n | FileOut n ->
pr ", [In] string %s" n
- | StringList n | DeviceList n ->
+ | StringList n | DeviceList n ->
pr ", [In] string[] %s" n
- | Bool n ->
- pr ", bool %s" n
- | Int n ->
- pr ", int %s" n
- | Int64 n ->
- pr ", long %s" n
- ) (snd style);
- pr ");\n"
+ | Bool n ->
+ pr ", bool %s" n
+ | Int n ->
+ pr ", int %s" n
+ | Int64 n ->
+ pr ", long %s" n
+ ) (snd style);
+ pr ");\n"
and generate_public_prototype () =
- pr " public %s %s (" (csharp_return_type ()) name;
- let comma = ref false in
- let next () =
- if !comma then pr ", ";
- comma := true
- in
- List.iter (
- function
- | Pathname n | Device n | Dev_or_Path n | String n | OptString n
- | FileIn n | FileOut n ->
+ pr " public %s %s (" (csharp_return_type ()) name;
+ let comma = ref false in
+ let next () =
+ if !comma then pr ", ";
+ comma := true
+ in
+ List.iter (
+ function
+ | Pathname n | Device n | Dev_or_Path n | String n | OptString n
+ | FileIn n | FileOut n ->
next (); pr "string %s" n
- | StringList n | DeviceList n ->
+ | StringList n | DeviceList n ->
next (); pr "string[] %s" n
- | Bool n ->
- next (); pr "bool %s" n
- | Int n ->
- next (); pr "int %s" n
- | Int64 n ->
- next (); pr "long %s" n
- ) (snd style);
- pr ")\n"
+ | Bool n ->
+ next (); pr "bool %s" n
+ | Int n ->
+ next (); pr "int %s" n
+ | Int64 n ->
+ next (); pr "long %s" n
+ ) (snd style);
+ pr ")\n"
and generate_call () =
- pr "guestfs_%s (_handle" name;
- List.iter (fun arg -> pr ", %s" (name_of_argt arg)) (snd style);
- pr ");\n";
+ pr "guestfs_%s (_handle" name;
+ List.iter (fun arg -> pr ", %s" (name_of_argt arg)) (snd style);
+ pr ");\n";
in
pr " [DllImport (\"%s\")]\n" library;
git.annexia.org / libguestfs.git / blobdiff