X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fgenerator.ml;h=b6f6f42a20ee7d709009c557271958f4ede49398;hb=6279c4bbf9cbbe66917ce9ffa4b98eca9040bcd9;hp=e30f5ebfdfc1219f4450a651e74a629e0b2ec81d;hpb=0e6e32025885286e2de39efca34ced2aaf26b3a3;p=libguestfs.git

diff --git a/src/generator.ml b/src/generator.ml
index e30f5eb..b6f6f42 100755
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -2757,7 +2757,11 @@ Create a swap partition on C<device>.");
        ["mkswap_L"; "hello"; "/dev/sda1"]])],
    "create a swap partition with a label",
    "\
-Create a swap partition on C<device> with label C<label>.");
+Create a swap partition on C<device> with label C<label>.
+
+Note that you cannot attach a swap label to a block device
+(eg. C</dev/sda>), just to a partition.  This appears to be
+a limitation of the kernel or swap tools.");
 
   ("mkswap_U", (RErr, [String "uuid"; String "device"]), 132, [],
    [InitEmpty, Always, TestRun (
@@ -3201,6 +3205,194 @@ Do not confuse this with the guestfish-specific
 C<alloc> command which allocates a file in the host and
 attaches it as a device.");
 
+  ("swapon_device", (RErr, [String "device"]), 170, [],
+   [InitNone, Always, TestRun (
+      [["mkswap"; "/dev/sdb"];
+       ["swapon_device"; "/dev/sdb"];
+       ["swapoff_device"; "/dev/sdb"]])],
+   "enable swap on device",
+   "\
+This command enables the libguestfs appliance to use the
+swap device or partition named C<device>.  The increased
+memory is made available for all commands, for example
+those run using C<guestfs_command> or C<guestfs_sh>.
+
+Note that you should not swap to existing guest swap
+partitions unless you know what you are doing.  They may
+contain hibernation information, or other information that
+the guest doesn't want you to trash.  You also risk leaking
+information about the host to the guest this way.  Instead,
+attach a new host device to the guest and swap on that.");
+
+  ("swapoff_device", (RErr, [String "device"]), 171, [],
+   [], (* XXX tested by swapon_device *)
+   "disable swap on device",
+   "\
+This command disables the libguestfs appliance swap
+device or partition named C<device>.
+See C<guestfs_swapon_device>.");
+
+  ("swapon_file", (RErr, [String "file"]), 172, [],
+   [InitBasicFS, Always, TestRun (
+      [["fallocate"; "/swap"; "8388608"];
+       ["mkswap_file"; "/swap"];
+       ["swapon_file"; "/swap"];
+       ["swapoff_file"; "/swap"]])],
+   "enable swap on file",
+   "\
+This command enables swap to a file.
+See C<guestfs_swapon_device> for other notes.");
+
+  ("swapoff_file", (RErr, [String "file"]), 173, [],
+   [], (* XXX tested by swapon_file *)
+   "disable swap on file",
+   "\
+This command disables the libguestfs appliance swap on file.");
+
+  ("swapon_label", (RErr, [String "label"]), 174, [],
+   [InitEmpty, Always, TestRun (
+      [["sfdiskM"; "/dev/sdb"; ","];
+       ["mkswap_L"; "swapit"; "/dev/sdb1"];
+       ["swapon_label"; "swapit"];
+       ["swapoff_label"; "swapit"]])],
+   "enable swap on labelled swap partition",
+   "\
+This command enables swap to a labelled swap partition.
+See C<guestfs_swapon_device> for other notes.");
+
+  ("swapoff_label", (RErr, [String "label"]), 175, [],
+   [], (* XXX tested by swapon_label *)
+   "disable swap on labelled swap partition",
+   "\
+This command disables the libguestfs appliance swap on
+labelled swap partition.");
+
+  ("swapon_uuid", (RErr, [String "uuid"]), 176, [],
+   [InitEmpty, Always, TestRun (
+      [["mkswap_U"; "a3a61220-882b-4f61-89f4-cf24dcc7297d"; "/dev/sdb"];
+       ["swapon_uuid"; "a3a61220-882b-4f61-89f4-cf24dcc7297d"];
+       ["swapoff_uuid"; "a3a61220-882b-4f61-89f4-cf24dcc7297d"]])],
+   "enable swap on swap partition by UUID",
+   "\
+This command enables swap to a swap partition with the given UUID.
+See C<guestfs_swapon_device> for other notes.");
+
+  ("swapoff_uuid", (RErr, [String "uuid"]), 177, [],
+   [], (* XXX tested by swapon_uuid *)
+   "disable swap on swap partition by UUID",
+   "\
+This command disables the libguestfs appliance swap partition
+with the given UUID.");
+
+  ("mkswap_file", (RErr, [String "path"]), 178, [],
+   [InitBasicFS, Always, TestRun (
+      [["fallocate"; "/swap"; "8388608"];
+       ["mkswap_file"; "/swap"]])],
+   "create a swap file",
+   "\
+Create a swap file.
+
+This command just writes a swap file signature to an existing
+file.  To create the file itself, use something like C<guestfs_fallocate>.");
+
+  ("inotify_init", (RErr, [Int "maxevents"]), 179, [],
+   [InitSquashFS, Always, TestRun (
+      [["inotify_init"; "0"]])],
+   "create an inotify handle",
+   "\
+This command creates a new inotify handle.
+The inotify subsystem can be used to notify events which happen to
+objects in the guest filesystem.
+
+C<maxevents> is the maximum number of events which will be
+queued up between calls to C<guestfs_inotify_read> or
+C<guestfs_inotify_files>.
+If this is passed as C<0>, then the kernel (or previously set)
+default is used.  For Linux 2.6.29 the default was 16384 events.
+Beyond this limit, the kernel throws away events, but records
+the fact that it threw them away by setting a flag
+C<IN_Q_OVERFLOW> in the returned structure list (see
+C<guestfs_inotify_read>).
+
+Before any events are generated, you have to add some
+watches to the internal watch list.  See:
+C<guestfs_inotify_add_watch>,
+C<guestfs_inotify_rm_watch> and
+C<guestfs_inotify_watch_all>.
+
+Queued up events should be read periodically by calling
+C<guestfs_inotify_read>
+(or C<guestfs_inotify_files> which is just a helpful
+wrapper around C<guestfs_inotify_read>).  If you don't
+read the events out often enough then you risk the internal
+queue overflowing.
+
+The handle should be closed after use by calling
+C<guestfs_inotify_close>.  This also removes any
+watches automatically.
+
+See also L<inotify(7)> for an overview of the inotify interface
+as exposed by the Linux kernel, which is roughly what we expose
+via libguestfs.  Note that there is one global inotify handle
+per libguestfs instance.");
+
+  ("inotify_add_watch", (RInt64 "wd", [String "path"; Int "mask"]), 180, [],
+   [InitBasicFS, Always, TestOutputList (
+      [["inotify_init"; "0"];
+       ["inotify_add_watch"; "/"; "1073741823"];
+       ["touch"; "/a"];
+       ["touch"; "/b"];
+       ["inotify_files"]], ["a"; "b"])],
+   "add an inotify watch",
+   "\
+Watch C<path> for the events listed in C<mask>.
+
+Note that if C<path> is a directory then events within that
+directory are watched, but this does I<not> happen recursively
+(in subdirectories).
+
+Note for non-C or non-Linux callers: the inotify events are
+defined by the Linux kernel ABI and are listed in
+C</usr/include/sys/inotify.h>.");
+
+  ("inotify_rm_watch", (RErr, [Int(*XXX64*) "wd"]), 181, [],
+   [],
+   "remove an inotify watch",
+   "\
+Remove a previously defined inotify watch.
+See C<guestfs_inotify_add_watch>.");
+
+  ("inotify_read", (RStructList ("events", "inotify_event"), []), 182, [],
+   [],
+   "return list of inotify events",
+   "\
+Return the complete queue of events that have happened
+since the previous read call.
+
+If no events have happened, this returns an empty list.
+
+I<Note>: In order to make sure that all events have been
+read, you must call this function repeatedly until it
+returns an empty list.  The reason is that the call will
+read events up to the maximum appliance-to-host message
+size and leave remaining events in the queue.");
+
+  ("inotify_files", (RStringList "paths", []), 183, [],
+   [],
+   "return list of watched files that had events",
+   "\
+This function is a helpful wrapper around C<guestfs_inotify_read>
+which just returns a list of pathnames of objects that were
+touched.  The returned pathnames are sorted and deduplicated.");
+
+  ("inotify_close", (RErr, []), 184, [],
+   [],
+   "close the inotify handle",
+   "\
+This closes the inotify handle which was previously
+opened by inotify_init.  It removes all watches, throws
+away any pending events, and deallocates all resources.");
+
 ]
 
 let all_functions = non_daemon_functions @ daemon_functions
@@ -3215,7 +3407,7 @@ let all_functions_sorted =
 (* Field types for structures. *)
 type field =
   | FChar			(* C 'char' (really, a 7 bit byte). *)
-  | FString			(* nul-terminated ASCII string. *)
+  | FString			(* nul-terminated ASCII string, NOT NULL. *)
   | FBuffer			(* opaque buffer of bytes, (char *, int) pair *)
   | FUInt32
   | FInt32
@@ -3361,6 +3553,14 @@ let structs = [
     "attrname", FString;
     "attrval", FBuffer;
   ];
+
+  (* Inotify events. *)
+  "inotify_event", [
+    "in_wd", FInt64;
+    "in_mask", FUInt32;
+    "in_cookie", FUInt32;
+    "in_name", FString;
+  ];
 ] (* end of structs *)
 
 (* Ugh, Java has to be different ..
@@ -3376,6 +3576,7 @@ let java_structs = [
   "dirent", "Dirent";
   "version", "Version";
   "xattr", "XAttr";
+  "inotify_event", "INotifyEvent";
 ]
 
 (* Used for testing language bindings. *)
@@ -3487,6 +3688,13 @@ let files_equal n1 n2 =
   | 1 -> false
   | i -> failwithf "%s: failed with error code %d" cmd i
 
+let rec filter_map f = function
+  | [] -> []
+  | x :: xs ->
+      match f x with
+      | Some y -> y :: filter_map f xs
+      | None -> filter_map f xs
+
 let rec find_map f = function
   | [] -> raise Not_found
   | x :: xs ->
@@ -4829,15 +5037,29 @@ static void print_table (char * const * const argv)
 }
 */
 
-static void no_test_warnings (void)
-{
 ";
 
+  (* Generate a list of commands which are not tested anywhere. *)
+  pr "static void no_test_warnings (void)\n";
+  pr "{\n";
+
+  let hash : (string, bool) Hashtbl.t = Hashtbl.create 13 in
   List.iter (
-    function
-    | name, _, _, _, [], _, _ ->
+    fun (_, _, _, _, tests, _, _) ->
+      let tests = filter_map (
+	function
+	| (_, (Always|If _|Unless _), test) -> Some test
+	| (_, Disabled, _) -> None
+      ) tests in
+      let seq = List.concat (List.map seq_of_test tests) in
+      let cmds_tested = List.map List.hd seq in
+      List.iter (fun cmd -> Hashtbl.replace hash cmd true) cmds_tested
+  ) all_functions;
+
+  List.iter (
+    fun (name, _, _, _, _, _, _) ->
+      if not (Hashtbl.mem hash name) then
 	pr "  fprintf (stderr, \"warning: \\\"guestfs_%s\\\" has no tests\\n\");\n" name
-    | name, _, _, _, tests, _, _ -> ()
   ) all_functions;
 
   pr "}\n";
@@ -5580,7 +5802,7 @@ and generate_fish_cmds () =
       let needs_i =
         List.exists (function (_, (FUUID|FBuffer)) -> true | _ -> false) cols in
 
-      pr "static void print_%s (struct guestfs_%s *%s)\n" typ typ typ;
+      pr "static void print_%s_indent (struct guestfs_%s *%s, const char *indent)\n" typ typ typ;
       pr "{\n";
       if needs_i then (
         pr "  int i;\n";
@@ -5589,44 +5811,57 @@ and generate_fish_cmds () =
       List.iter (
 	function
 	| name, FString ->
-	    pr "  printf (\"%s: %%s\\n\", %s->%s);\n" name typ name
+	    pr "  printf (\"%%s%s: %%s\\n\", indent, %s->%s);\n" name typ name
 	| name, FUUID ->
 	    pr "  printf (\"%s: \");\n" name;
 	    pr "  for (i = 0; i < 32; ++i)\n";
-	    pr "    printf (\"%%c\", %s->%s[i]);\n" typ name;
+	    pr "    printf (\"%%s%%c\", indent, %s->%s[i]);\n" typ name;
 	    pr "  printf (\"\\n\");\n"
 	| name, FBuffer ->
-	    pr "  printf (\"%s: \");\n" name;
+	    pr "  printf (\"%%s%s: \", indent);\n" name;
 	    pr "  for (i = 0; i < %s->%s_len; ++i)\n" typ name;
 	    pr "    if (isprint (%s->%s[i]))\n" typ name;
-	    pr "      printf (\"%%c\", %s->%s[i]);\n" typ name;
+	    pr "      printf (\"%%s%%c\", indent, %s->%s[i]);\n" typ name;
 	    pr "    else\n";
-	    pr "      printf (\"\\\\x%%02x\", %s->%s[i]);\n" typ name;
+	    pr "      printf (\"%%s\\\\x%%02x\", indent, %s->%s[i]);\n" typ name;
 	    pr "  printf (\"\\n\");\n"
 	| name, (FUInt64|FBytes) ->
-	    pr "  printf (\"%s: %%\" PRIu64 \"\\n\", %s->%s);\n" name typ name
+	    pr "  printf (\"%%s%s: %%\" PRIu64 \"\\n\", indent, %s->%s);\n"
+	      name typ name
 	| name, FInt64 ->
-	    pr "  printf (\"%s: %%\" PRIi64 \"\\n\", %s->%s);\n" name typ name
+	    pr "  printf (\"%%s%s: %%\" PRIi64 \"\\n\", indent, %s->%s);\n"
+	      name typ name
 	| name, FUInt32 ->
-	    pr "  printf (\"%s: %%\" PRIu32 \"\\n\", %s->%s);\n" name typ name
+	    pr "  printf (\"%%s%s: %%\" PRIu32 \"\\n\", indent, %s->%s);\n"
+	      name typ name
 	| name, FInt32 ->
-	    pr "  printf (\"%s: %%\" PRIi32 \"\\n\", %s->%s);\n" name typ name
+	    pr "  printf (\"%%s%s: %%\" PRIi32 \"\\n\", indent, %s->%s);\n"
+	      name typ name
 	| name, FChar ->
-	    pr "  printf (\"%s: %%c\\n\", %s->%s);\n" name typ name
+	    pr "  printf (\"%%s%s: %%c\\n\", indent, %s->%s);\n"
+	      name typ name
 	| name, FOptPercent ->
-	    pr "  if (%s->%s >= 0) printf (\"%s: %%g %%%%\\n\", %s->%s);\n"
+	    pr "  if (%s->%s >= 0) printf (\"%%s%s: %%g %%%%\\n\", indent, %s->%s);\n"
 	      typ name name typ name;
-	    pr "  else printf (\"%s: \\n\");\n" name
+	    pr "  else printf (\"%%s%s: \\n\", indent);\n" name
       ) cols;
       pr "}\n";
       pr "\n";
+      pr "static void print_%s (struct guestfs_%s *%s)\n" typ typ typ;
+      pr "{\n";
+      pr "  print_%s_indent (%s, \"\");\n" typ typ;
+      pr "}\n";
+      pr "\n";
       pr "static void print_%s_list (struct guestfs_%s_list *%ss)\n"
 	typ typ typ;
       pr "{\n";
       pr "  int i;\n";
       pr "\n";
-      pr "  for (i = 0; i < %ss->len; ++i)\n" typ;
-      pr "    print_%s (&%ss->val[i]);\n" typ typ;
+      pr "  for (i = 0; i < %ss->len; ++i) {\n" typ;
+      pr "    printf (\"[%%d] = {\\n\", i);\n";
+      pr "    print_%s_indent (&%ss->val[i], \"  \");\n" typ typ;
+      pr "    printf (\"}\\n\");\n";
+      pr "  }\n";
       pr "}\n";
       pr "\n";
   ) structs;