checkenv
extern char *checkenv(const char *);
if (checkenv((const char *)"TRUSS_PID")) {
if (checkenv((const char *)"TRUSS_NOEXIT")) {
if (checkenv((const char *)"TRUSS_NOINDENT"))
if (checkenv((const char *)"TRUSS_ALL"))
str = checkenv((const char *)"TRUSS_OUTPUT");
if (checkenv((const char *)"WHO_DETAIL"))
extern char *checkenv(char const *);
if (checkenv("APPTRACE_PID") != NULL) {
if ((str = checkenv("APPTRACE_OUTPUT")) != NULL) {