1 files changed, 134 insertions, 0 deletions
diff --git a/include/grub/command.h b/include/grub/command.h
new file mode 100644
index 0000000..2a6f7f8
--- /dev/null
+++ b/include/grub/command.h
@@ -0,0 +1,134 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_COMMAND_HEADER
+#define GRUB_COMMAND_HEADER	1
+
+#include <grub/symbol.h>
+#include <grub/err.h>
+#include <grub/list.h>
+#include <grub/misc.h>
+
+typedef enum grub_command_flags
+  {
+    /* This is an extended command.  */
+    GRUB_COMMAND_FLAG_EXTCMD = 0x10,
+    /* This is an dynamic command.  */
+    GRUB_COMMAND_FLAG_DYNCMD = 0x20,
+    /* This command accepts block arguments.  */
+    GRUB_COMMAND_FLAG_BLOCKS = 0x40,
+    /* This command accepts unknown arguments as direct parameters.  */
+    GRUB_COMMAND_ACCEPT_DASH = 0x80,
+    /* This command accepts only options preceding direct arguments.  */
+    GRUB_COMMAND_OPTIONS_AT_START = 0x100,
+    /* Can be executed in an entries extractor.  */
+    GRUB_COMMAND_FLAG_EXTRACTOR = 0x200
+  } grub_command_flags_t;
+
+struct grub_command;
+
+typedef grub_err_t (*grub_command_func_t) (struct grub_command *cmd,
+					   int argc, char **argv);
+
+#define GRUB_COMMAND_PRIO_MASK	0xff
+#define GRUB_COMMAND_FLAG_ACTIVE	0x100
+
+/* The command description.  */
+struct grub_command
+{
+  /* The next element.  */
+  struct grub_command *next;
+  struct grub_command **prev;
+
+  /* The name.  */
+  const char *name;
+
+    /* The priority.  */
+  int prio;
+
+  /* The callback function.  */
+  grub_command_func_t func;
+
+  /* The flags.  */
+  grub_command_flags_t flags;
+
+  /* The summary of the command usage.  */
+  const char *summary;
+
+  /* The description of the command.  */
+  const char *description;
+
+  /* Arbitrary data.  */
+  void *data;
+};
+typedef struct grub_command *grub_command_t;
+
+extern grub_command_t EXPORT_VAR(grub_command_list);
+
+grub_command_t
+EXPORT_FUNC(grub_register_command_prio) (const char *name,
+					 grub_command_func_t func,
+					 const char *summary,
+					 const char *description,
+					 int prio);
+grub_command_t
+EXPORT_FUNC(grub_register_command_lockdown) (const char *name,
+                                             grub_command_func_t func,
+                                             const char *summary,
+                                             const char *description);
+void EXPORT_FUNC(grub_unregister_command) (grub_command_t cmd);
+
+static inline grub_command_t
+grub_register_command (const char *name,
+		       grub_command_func_t func,
+		       const char *summary,
+		       const char *description)
+{
+  return grub_register_command_prio (name, func, summary, description, 0);
+}
+
+static inline grub_command_t
+grub_register_command_p1 (const char *name,
+			  grub_command_func_t func,
+			  const char *summary,
+			  const char *description)
+{
+  return grub_register_command_prio (name, func, summary, description, 1);
+}
+
+static inline grub_command_t
+grub_command_find (const char *name)
+{
+  return grub_named_list_find (GRUB_AS_NAMED_LIST (grub_command_list), name);
+}
+
+static inline grub_err_t
+grub_command_execute (const char *name, int argc, char **argv)
+{
+  grub_command_t cmd;
+
+  cmd = grub_command_find (name);
+  return (cmd) ? cmd->func (cmd, argc, argv) : GRUB_ERR_FILE_NOT_FOUND;
+}
+
+#define FOR_COMMANDS(var) FOR_LIST_ELEMENTS((var), grub_command_list)
+#define FOR_COMMANDS_SAFE(var, next) FOR_LIST_ELEMENTS_SAFE((var), (next), grub_command_list)
+
+void grub_register_core_commands (void);
+
+#endif /* ! GRUB_COMMAND_HEADER */