+#ifdef USE_HOSTCC /* Functions only used from tools/env */
+/*
+ * Look up any flags directly from the .flags variable and the static list
+ * and convert them to the vartype enum.
+ */
+enum env_flags_vartype env_flags_get_type(const char *name)
+{
+ const char *flags_list = getenv(ENV_FLAGS_VAR);
+ char flags[ENV_FLAGS_ATTR_MAX_LEN + 1];
+
+ if (env_flags_lookup(flags_list, name, flags))
+ return env_flags_vartype_string;
+
+ if (strlen(flags) <= ENV_FLAGS_VARTYPE_LOC)
+ return env_flags_vartype_string;
+
+ return env_flags_parse_vartype(flags);
+}
+
+/*
+ * Look up the access of a variable directly from the .flags var.
+ */
+enum env_flags_varaccess env_flags_get_varaccess(const char *name)
+{
+ const char *flags_list = getenv(ENV_FLAGS_VAR);
+ char flags[ENV_FLAGS_ATTR_MAX_LEN + 1];
+
+ if (env_flags_lookup(flags_list, name, flags))
+ return env_flags_varaccess_any;
+
+ if (strlen(flags) <= ENV_FLAGS_VARACCESS_LOC)
+ return env_flags_varaccess_any;
+
+ return env_flags_parse_varaccess(flags);
+}
+
+/*
+ * Validate that the proposed new value for "name" is valid according to the
+ * defined flags for that variable, if any.
+ */
+int env_flags_validate_type(const char *name, const char *value)
+{
+ enum env_flags_vartype type;
+
+ if (value == NULL)
+ return 0;
+ type = env_flags_get_type(name);
+ if (_env_flags_validate_type(value, type) < 0) {
+ printf("## Error: flags type check failure for "
+ "\"%s\" <= \"%s\" (type: %c)\n",
+ name, value, env_flags_vartype_rep[type]);
+ return -1;
+ }
+ return 0;
+}
+
+/*
+ * Validate that the proposed access to variable "name" is valid according to
+ * the defined flags for that variable, if any.
+ */
+int env_flags_validate_varaccess(const char *name, int check_mask)
+{
+ enum env_flags_varaccess access;
+ int access_mask;
+
+ access = env_flags_get_varaccess(name);
+ access_mask = env_flags_varaccess_mask[access];
+
+ return (check_mask & access_mask) != 0;
+}
+
+/*
+ * Validate the parameters to "env set" directly
+ */
+int env_flags_validate_env_set_params(int argc, char * const argv[])
+{
+ if ((argc >= 3) && argv[2] != NULL) {
+ enum env_flags_vartype type = env_flags_get_type(argv[1]);
+
+ /*
+ * we don't currently check types that need more than
+ * one argument
+ */
+ if (type != env_flags_vartype_string && argc > 3) {
+ printf("## Error: too many parameters for setting "
+ "\"%s\"\n", argv[1]);
+ return -1;
+ }
+ return env_flags_validate_type(argv[1], argv[2]);
+ }
+ /* ok */
+ return 0;
+}
+
+#else /* !USE_HOSTCC - Functions only used from lib/hashtable.c */
+