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/*
* 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 */
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