a18f3b98c6
* include/grub/command.h (FOR_COMMANDS_SAFE): Likewise. * grub-core/commands/help.c (grub_cmd_help): Use FOR_COMMANDS_SAFE.
128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_COMMAND_HEADER
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#define GRUB_COMMAND_HEADER 1
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#include <grub/symbol.h>
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#include <grub/err.h>
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#include <grub/list.h>
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typedef enum grub_command_flags
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{
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/* This is an extended command. */
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GRUB_COMMAND_FLAG_EXTCMD = 0x10,
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/* This is an dynamic command. */
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GRUB_COMMAND_FLAG_DYNCMD = 0x20,
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/* This command accepts block arguments. */
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GRUB_COMMAND_FLAG_BLOCKS = 0x40,
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/* This command accepts unknown arguments as direct parameters. */
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GRUB_COMMAND_ACCEPT_DASH = 0x80,
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/* This command accepts only options preceding direct arguments. */
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GRUB_COMMAND_OPTIONS_AT_START = 0x100,
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/* Can be executed in an entries extractor. */
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GRUB_COMMAND_FLAG_EXTRACTOR = 0x200
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} grub_command_flags_t;
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struct grub_command;
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typedef grub_err_t (*grub_command_func_t) (struct grub_command *cmd,
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int argc, char **argv);
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#define GRUB_COMMAND_PRIO_MASK 0xff
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#define GRUB_COMMAND_FLAG_ACTIVE 0x100
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/* The command description. */
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struct grub_command
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{
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/* The next element. */
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struct grub_command *next;
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struct grub_command **prev;
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/* The name. */
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const char *name;
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/* The priority. */
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int prio;
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/* The callback function. */
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grub_command_func_t func;
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/* The flags. */
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grub_command_flags_t flags;
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/* The summary of the command usage. */
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const char *summary;
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/* The description of the command. */
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const char *description;
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/* Arbitrary data. */
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void *data;
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};
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typedef struct grub_command *grub_command_t;
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extern grub_command_t EXPORT_VAR(grub_command_list);
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grub_command_t
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EXPORT_FUNC(grub_register_command_prio) (const char *name,
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grub_command_func_t func,
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const char *summary,
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const char *description,
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int prio);
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void EXPORT_FUNC(grub_unregister_command) (grub_command_t cmd);
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static inline grub_command_t
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grub_register_command (const char *name,
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grub_command_func_t func,
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const char *summary,
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const char *description)
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{
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return grub_register_command_prio (name, func, summary, description, 0);
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}
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static inline grub_command_t
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grub_register_command_p1 (const char *name,
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grub_command_func_t func,
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const char *summary,
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const char *description)
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{
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return grub_register_command_prio (name, func, summary, description, 1);
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}
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static inline grub_command_t
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grub_command_find (const char *name)
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{
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return grub_named_list_find (GRUB_AS_NAMED_LIST (grub_command_list), name);
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}
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static inline grub_err_t
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grub_command_execute (const char *name, int argc, char **argv)
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{
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grub_command_t cmd;
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cmd = grub_command_find (name);
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return (cmd) ? cmd->func (cmd, argc, argv) : GRUB_ERR_FILE_NOT_FOUND;
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}
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#define FOR_COMMANDS(var) FOR_LIST_ELEMENTS((var), grub_command_list)
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#define FOR_COMMANDS_SAFE(var, next) FOR_LIST_ELEMENTS_SAFE((var), (next), grub_command_list)
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void grub_register_core_commands (void);
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#endif /* ! GRUB_COMMAND_HEADER */
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