grub/grub-core/include/grub/command.h

123 lines
3.3 KiB
C

/*
* 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>
/* Can be run in the command-line. */
#define GRUB_COMMAND_FLAG_CMDLINE 0x1
/* Can be run in the menu. */
#define GRUB_COMMAND_FLAG_MENU 0x2
/* Can be run in both interfaces. */
#define GRUB_COMMAND_FLAG_BOTH 0x3
/* Only for the command title. */
#define GRUB_COMMAND_FLAG_TITLE 0x4
/* Don't print the command on booting. */
#define GRUB_COMMAND_FLAG_NO_ECHO 0x8
/* This is an extended command. */
#define GRUB_COMMAND_FLAG_EXTCMD 0x10
/* This is an dynamic command. */
#define GRUB_COMMAND_FLAG_DYNCMD 0x20
struct grub_command;
typedef grub_err_t (*grub_command_func_t) (struct grub_command *cmd,
int argc, char **argv);
/* The command description. */
struct grub_command
{
/* The next element. */
struct grub_command *next;
/* The name. */
const char *name;
/* The priority. */
int prio;
/* The callback function. */
grub_command_func_t func;
/* The flags. */
unsigned 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);
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)
void grub_register_core_commands (void);
#endif /* ! GRUB_COMMAND_HEADER */