diff options
| author | Marek Vasut <[email protected]> | 2020-07-07 20:51:39 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2020-07-31 10:13:00 -0400 |
| commit | d045cbacf2529266bb312add023e12c0d400bf67 (patch) | |
| tree | 1ce79c821d8045d76694786bfabb37aaf1bc12ea /lib/hashtable.c | |
| parent | 47f3b1f243acfe755340753c5d467ba781618fa6 (diff) | |
env: Add support for explicit write access list
This option marks any U-Boot variable which does not have explicit 'w'
writeable flag set as read-only. This way the environment can be locked
down and only variables explicitly configured to be writeable can ever
be changed by either 'env import', 'env set' or loading user environment
from environment storage.
Signed-off-by: Marek Vasut <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
Diffstat (limited to 'lib/hashtable.c')
| -rw-r--r-- | lib/hashtable.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/hashtable.c b/lib/hashtable.c index ef834badc52..4a8c50b4b8a 100644 --- a/lib/hashtable.c +++ b/lib/hashtable.c @@ -950,9 +950,12 @@ int himport_r(struct hsearch_data *htab, e.data = value; hsearch_r(e, ENV_ENTER, &rv, htab, flag); - if (rv == NULL) +#if !CONFIG_IS_ENABLED(ENV_WRITEABLE_LIST) + if (rv == NULL) { printf("himport_r: can't insert \"%s=%s\" into hash table\n", name, value); + } +#endif debug("INSERT: table %p, filled %d/%d rv %p ==> name=\"%s\" value=\"%s\"\n", htab, htab->filled, htab->size, |