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expo: cedit: Support reading settings from environment vars

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Add a command to read cedit settings from environment variables so that
they can be restored as part of the environment.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2023-08-14 16:40:36 -06:00
committed by Tom Rini
parent fc9c0e0771
commit bcf2b7202e
5 changed files with 105 additions and 1 deletions
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45
boot/cedit.c
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@@ -439,3 +439,48 @@ int cedit_write_settings_env(struct expo *exp, bool verbose)
return 0;
}
static int h_read_settings_env(struct scene_obj *obj, void *vpriv)
{
struct cedit_iter_priv *priv = vpriv;
struct scene_obj_menu *menu;
char var[60];
int val, ret;
if (obj->type != SCENEOBJT_MENU)
return 0;
menu = (struct scene_obj_menu *)obj;
val = menu->cur_item_id;
snprintf(var, sizeof(var), "c.%s", obj->name);
val = env_get_ulong(var, 10, 0);
if (priv->verbose)
printf("%s=%d\n", var, val);
if (!val)
return log_msg_ret("get", -ENOENT);
/*
* note that no validation is done here, to make sure the ID is valid
* and actually points to a menu item
*/
menu->cur_item_id = val;
return 0;
}
int cedit_read_settings_env(struct expo *exp, bool verbose)
{
struct cedit_iter_priv priv;
int ret;
/* write out the items */
priv.verbose = verbose;
ret = expo_iter_scene_objs(exp, h_read_settings_env, &priv);
if (ret) {
log_debug("Failed to read settings from env (err=%d)\n", ret);
return log_msg_ret("set", ret);
}
return 0;
}