diff options
Diffstat (limited to 'tools/env/fw_env.c')
| -rw-r--r-- | tools/env/fw_env.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c index 996682e..e292d2b 100644 --- a/tools/env/fw_env.c +++ b/tools/env/fw_env.c @@ -45,6 +45,8 @@ #include "fw_env.h" +#include <config.h> + #define WHITESPACE(c) ((c == '\t') || (c == ' ')) #define min(x, y) ({ \ @@ -390,15 +392,22 @@ int fw_env_write(char *name, char *value) * Delete any existing definition */ if (oldval) { +#ifndef CONFIG_ENV_OVERWRITE /* * Ethernet Address and serial# can be set only once */ - if ((strcmp (name, "ethaddr") == 0) || - (strcmp (name, "serial#") == 0)) { + if ( + (strcmp(name, "serial#") == 0) || + ((strcmp(name, "ethaddr") == 0) +#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) + && (strcmp(oldval, MK_STR(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'; |