/* * (C) Copyright 2012 * Joe Hershberger, National Instruments, joe.hershberger@ni.com * * See file CREDITS for list of people who contributed to this * project. * * This program 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 2 of * the License, or (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef __ENV_CALLBACK_H__ #define __ENV_CALLBACK_H__ #include #include #define ENV_CALLBACK_VAR ".callbacks" /* Board configs can define additional static callback bindings */ #ifndef CONFIG_ENV_CALLBACK_LIST_STATIC #define CONFIG_ENV_CALLBACK_LIST_STATIC #endif /* * This list of callback bindings is static, but may be overridden by defining * a new association in the ".callbacks" environment variable. */ #define ENV_CALLBACK_LIST_STATIC ENV_CALLBACK_VAR ":callbacks," \ CONFIG_ENV_CALLBACK_LIST_STATIC struct env_clbk_tbl { const char *name; /* Callback name */ int (*callback)(const char *name, const char *value, enum env_op op, int flags); }; struct env_clbk_tbl *find_env_callback(const char *); void env_callback_init(ENTRY *var_entry); /* * Define a callback that can be associated with variables. * when associated through the ".callbacks" environment variable, the callback * will be executed any time the variable is inserted, overwritten, or deleted. */ #define U_BOOT_ENV_CALLBACK(name, callback) \ ll_entry_declare(struct env_clbk_tbl, name, env_clbk, env_clbk) = \ {#name, callback} #endif /* __ENV_CALLBACK_H__ */