From 267541f776f1e2bec21681c6e39a4c93af9621cf Mon Sep 17 00:00:00 2001 From: Joe Hershberger Date: Tue, 11 Dec 2012 22:16:34 -0600 Subject: env: Add support for access control to .flags Add support for read-only, write-once, and change-default. Signed-off-by: Joe Hershberger --- common/env_common.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'common/env_common.c') diff --git a/common/env_common.c b/common/env_common.c index bb18070..906b41f 100644 --- a/common/env_common.c +++ b/common/env_common.c @@ -95,6 +95,24 @@ int getenv_yesno(const char *var) 1 : 0; } +/* + * Look up the variable from the default environment + */ +char *getenv_default(const char *name) +{ + char *ret_val; + unsigned long really_valid = gd->env_valid; + unsigned long real_gd_flags = gd->flags; + + /* Pretend that the image is bad. */ + gd->flags &= ~GD_FLG_ENV_READY; + gd->env_valid = 0; + ret_val = getenv(name); + gd->env_valid = really_valid; + gd->flags = real_gd_flags; + return ret_val; +} + void set_default_env(const char *s) { int flags = 0; -- cgit v1.1