/* * 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); }