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편집 파일: context-envvar.stp

// context-envvar tapset // Copyright (C) 2012 Red Hat, Inc. // // This file is part of systemtap, and is free software. You can // redistribute it and/or modify it under the terms of the GNU General // Public License (GPL); either version 2, or (at your option) any // later version. // NB: functionally equivalent to linux/context-envvar.stp %{ #include <stdlib.h> %} function env_var:string(name:string) %{ /* pure */ /* unmodified-fnargs */ // XXX getenv may not be reentrant! const char* env = getenv(STAP_ARG_name); if (env) strlcpy (STAP_RETVALUE, env, MAXSTRINGLEN); else STAP_RETVALUE[0] = '\0'; %}