* (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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/string.h>
return binflags;
}
+static int first_call = 1;
+static const char *flags_list;
+
/*
* Look for possible flags for a newly added variable
* This is called specifically when the variable did not exist in the hash
void env_flags_init(ENTRY *var_entry)
{
const char *var_name = var_entry->key;
- const char *flags_list = getenv(ENV_FLAGS_VAR);
char flags[ENV_FLAGS_ATTR_MAX_LEN + 1] = "";
int ret = 1;
+ if (first_call) {
+ flags_list = getenv(ENV_FLAGS_VAR);
+ first_call = 0;
+ }
/* look in the ".flags" and static for a reference to this variable */
ret = env_flags_lookup(flags_list, var_name, flags);
/*
* Call for each element in the list that defines flags for a variable
*/
-static int set_flags(const char *name, const char *value)
+static int set_flags(const char *name, const char *value, void *priv)
{
ENTRY e, *ep;
hwalk_r(&env_htab, clear_flags);
/* configure any static flags */
- env_attr_walk(ENV_FLAGS_LIST_STATIC, set_flags);
+ env_attr_walk(ENV_FLAGS_LIST_STATIC, set_flags, NULL);
/* configure any dynamic flags */
- env_attr_walk(value, set_flags);
+ env_attr_walk(value, set_flags, NULL);
return 0;
}
/* Default value for NULL to protect string-manipulating functions */
newval = newval ? : "";
-#ifndef CONFIG_ENV_OVERWRITE
- /*
- * Some variables like "ethaddr" and "serial#" can be set only once and
- * cannot be deleted, unless CONFIG_ENV_OVERWRITE is defined.
- */
- if (op != env_op_create && /* variable exists */
- (flag & H_FORCE) == 0) { /* and we are not forced */
- if (strcmp(name, "serial#") == 0 ||
- (strcmp(name, "ethaddr") == 0
-#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
- && strcmp(oldval, __stringify(CONFIG_ETHADDR)) != 0
-#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
- )) {
- printf("Can't overwrite \"%s\"\n", name);
- return 1;
- }
- }
-#endif
-
/* validate the value to match the variable type */
if (op != env_op_delete) {
enum env_flags_vartype type = (enum env_flags_vartype)