126 lines
3 KiB
C
126 lines
3 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2005,2007,2009,2010 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/>.
|
|
*/
|
|
|
|
#include <grub/misc.h>
|
|
#include <grub/script_sh.h>
|
|
#include <grub/parser.h>
|
|
#include <grub/mm.h>
|
|
|
|
static grub_script_function_t grub_script_function_list;
|
|
|
|
grub_script_function_t
|
|
grub_script_function_create (struct grub_script_arg *functionname_arg,
|
|
struct grub_script *cmd)
|
|
{
|
|
grub_script_function_t func;
|
|
grub_script_function_t *p;
|
|
|
|
func = (grub_script_function_t) grub_malloc (sizeof (*func));
|
|
if (! func)
|
|
return 0;
|
|
|
|
func->name = grub_strdup (functionname_arg->str);
|
|
if (! func->name)
|
|
{
|
|
grub_free (func);
|
|
return 0;
|
|
}
|
|
|
|
func->func = cmd;
|
|
|
|
/* Keep the list sorted for simplicity. */
|
|
p = &grub_script_function_list;
|
|
while (*p)
|
|
{
|
|
if (grub_strcmp ((*p)->name, func->name) >= 0)
|
|
break;
|
|
|
|
p = &((*p)->next);
|
|
}
|
|
|
|
/* If the function already exists, overwrite the old function. */
|
|
if (*p && grub_strcmp ((*p)->name, func->name) == 0)
|
|
{
|
|
grub_script_function_t q;
|
|
|
|
q = *p;
|
|
grub_script_free (q->func);
|
|
q->func = cmd;
|
|
grub_free (func);
|
|
func = q;
|
|
}
|
|
else
|
|
{
|
|
func->next = *p;
|
|
*p = func;
|
|
}
|
|
|
|
return func;
|
|
}
|
|
|
|
void
|
|
grub_script_function_remove (const char *name)
|
|
{
|
|
grub_script_function_t *p, q;
|
|
|
|
for (p = &grub_script_function_list, q = *p; q; p = &(q->next), q = q->next)
|
|
if (grub_strcmp (name, q->name) == 0)
|
|
{
|
|
*p = q->next;
|
|
grub_free (q->name);
|
|
grub_script_free (q->func);
|
|
grub_free (q);
|
|
break;
|
|
}
|
|
}
|
|
|
|
grub_script_function_t
|
|
grub_script_function_find (char *functionname)
|
|
{
|
|
grub_script_function_t func;
|
|
|
|
for (func = grub_script_function_list; func; func = func->next)
|
|
if (grub_strcmp (functionname, func->name) == 0)
|
|
break;
|
|
|
|
if (! func)
|
|
grub_error (GRUB_ERR_UNKNOWN_COMMAND, "unknown command `%.20s'", functionname);
|
|
|
|
return func;
|
|
}
|
|
|
|
int
|
|
grub_script_function_iterate (int (*iterate) (grub_script_function_t))
|
|
{
|
|
grub_script_function_t func;
|
|
|
|
for (func = grub_script_function_list; func; func = func->next)
|
|
if (iterate (func))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
grub_script_function_call (grub_script_function_t func,
|
|
int argc __attribute__((unused)),
|
|
char **args __attribute__((unused)))
|
|
{
|
|
/* XXX: Arguments are not supported yet. */
|
|
return grub_script_execute (func->func);
|
|
}
|