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env: Handle write-once ethaddr and serial# generically

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Use the variable access flags to implement the protection for ethaddr
and serial# instead of hard-coding them.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Joe Hershberger
2012-12-11 22:16:37 -06:00
committed by Tom Rini
parent 9d8d661d7f
commit 1d6cd0a3f6
3 changed files with 22 additions and 36 deletions
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17
tools/env/fw_env.c vendored
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@@ -369,23 +369,6 @@ int fw_env_write(char *name, char *value)
return 0;
if (deleting || overwriting) {
#ifndef CONFIG_ENV_OVERWRITE
/*
* Ethernet Address and serial# can be set only once
*/
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 */
) ) {
fprintf (stderr, "Can't overwrite \"%s\"\n", name);
errno = EROFS;
return -1;
}
#endif /* CONFIG_ENV_OVERWRITE */
if (*++nxt == '\0') {
*env = '\0';
} else {