From: Marek Behún marek.behun@nic.cz
Instead of pretending that we don't have environment to force searching default environment in env_get_default(), get the data from the default_environment[] buffer directly.
Signed-off-by: Marek Behún marek.behun@nic.cz --- env/common.c | 45 ++++++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 21 deletions(-)
diff --git a/env/common.c b/env/common.c index 757c5f9ecd..208e2adaa0 100644 --- a/env/common.c +++ b/env/common.c @@ -148,12 +148,10 @@ char *from_env(const char *envvar) return ret; }
-/* - * Look up variable from environment for restricted C runtime env. - */ -int env_get_f(const char *name, char *buf, unsigned len) +static int env_get_from_linear(const char *env, const char *name, char *buf, + unsigned len) { - const char *env, *p, *end; + const char *p, *end; size_t name_len;
if (name == NULL || *name == '\0') @@ -161,11 +159,6 @@ int env_get_f(const char *name, char *buf, unsigned len)
name_len = strlen(name);
- if (gd->env_valid == ENV_INVALID) - env = default_environment; - else - env = (const char *)gd->env_addr; - for (p = env; *p != '\0'; p = end + 1) { const char *value; unsigned res; @@ -193,6 +186,21 @@ int env_get_f(const char *name, char *buf, unsigned len) return -1; }
+/* + * Look up variable from environment for restricted C runtime env. + */ +int env_get_f(const char *name, char *buf, unsigned len) +{ + const char *env; + + if (gd->env_valid == ENV_INVALID) + env = default_environment; + else + env = (const char *)gd->env_addr; + + return env_get_from_linear(env, name, buf, len); +} + /** * Decode the integer value of an environment variable and return it. * @@ -232,17 +240,12 @@ int env_get_yesno(const char *var) */ char *env_get_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 = ENV_INVALID; - ret_val = env_get(name); - gd->env_valid = really_valid; - gd->flags = real_gd_flags; - return ret_val; + if (env_get_from_linear(default_environment, name, + (char *)(gd->env_buf), + sizeof(gd->env_buf)) >= 0) + return (char *)(gd->env_buf); + + return NULL; }
void env_set_default(const char *s, int flags)