77 lines
2 KiB
C
77 lines
2 KiB
C
/* hello.c - test module for dynamic loading */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003,2007 Free Software Foundation, Inc.
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* Copyright (C) 2003 NIIBE Yutaka <gniibe@m17n.org>
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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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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/extcmd.h>
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#include <grub/i18n.h>
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static struct grub_script *script;
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static grub_err_t
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grub_cmd_hello (grub_extcmd_context_t ctxt,
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int argc, char **args __attribute__ ((unused)))
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{
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if (argc == 0 && script == 0)
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grub_printf ("Hello World\n");
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else if (argc == 0)
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grub_script_execute (script);
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else
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{
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if (! ctxt->script_params || ! ctxt->script_params[0])
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return 1;
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if (script)
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grub_script_free (script);
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script = grub_malloc (sizeof (*script));
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if (! script)
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return 1;
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script->cmd = ctxt->script_params[0]->cmd;
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script->mem = ctxt->script_params[0]->mem;
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ctxt->script_params[0]->cmd = 0;
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ctxt->script_params[0]->mem = 0;
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}
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return 0;
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}
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static grub_extcmd_t cmd;
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GRUB_MOD_INIT(hello)
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{
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cmd = grub_register_extcmd ("hello", grub_cmd_hello,
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GRUB_COMMAND_FLAG_BOTH | GRUB_COMMAND_FLAG_BLOCKS,
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0, N_("Say \"Hello World\"."), 0);
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}
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GRUB_MOD_FINI(hello)
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{
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if (script)
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grub_script_free (script);
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grub_unregister_extcmd (cmd);
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}
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