286 int env_set(const char *varname, const char *varvalue)  in env_set()  argument
288 	const char * const argv[4] = { "setenv", varname, varvalue, NULL };  in env_set()
294 	if (varvalue == NULL || varvalue[0] == '\0')  in env_set()
300 static int env_append(const char *varname, const char *varvalue)  in env_append()  argument
305 	debug("%s: varvalue = %s\n", __func__, varvalue);  in env_append()
311 	if (env_exist(varname, varvalue))  in env_append()
314 	debug("%s: reall append: %s\n", __func__, varvalue);  in env_append()
316 	if (varvalue)  in env_append()
317 		len += strlen(varvalue);  in env_append()
336 	if (varvalue)  in env_append()
337 		strcat(newvalue, varvalue);  in env_append()
406 int env_update_filter(const char *varname, const char *varvalue,  in env_update_filter()  argument
426 		env_set(varname, varvalue);  in env_update_filter()
427 		if (ignore && strstr(varvalue, ignore))  in env_update_filter()
440 	v_string_tok = strdup(varvalue);  in env_update_filter()
537 int env_update(const char *varname, const char *varvalue)  in env_update()  argument
539 	return env_update_filter(varname, varvalue, NULL);  in env_update()
549 	char *varvalue;  in env_update_extract_subset()  local
554 	varvalue = env_get(varname);  in env_update_extract_subset()
555 	if (!varvalue)  in env_update_extract_subset()
558 	len = strlen(varvalue) + 1;  in env_update_extract_subset()
561 	tmp_varvalue = strdup(varvalue);  in env_update_extract_subset()
589 char *env_exist(const char *varname, const char *varvalue)  in env_exist()  argument
599 	len = strlen(varvalue) + 8; /* extra 8 byte is enough*/  in env_exist()
607 		snprintf(buf, len, " %s ", varvalue);  in env_exist()
611 			      __func__, varvalue, varname);  in env_exist()
619 		snprintf(buf, len, " %s", varvalue);  in env_exist()
622 			if (*(p + strlen(varvalue) + 1) == '\0') {  in env_exist()
624 				      __func__, varvalue, varname);  in env_exist()
633 		snprintf(buf, len, "%s ", varvalue);  in env_exist()
637 			if (len == strlen(varvalue)) {  in env_exist()
639 				      __func__, varvalue, varname);  in env_exist()
653 int env_delete(const char *varname, const char *varvalue, int complete_match)  in env_delete()  argument
667 		env_exist(varname, varvalue) : strstr(value, varvalue);  in env_delete()