ref: 6b6b9a236d773c704daaf7f7b5b090111e28ac87
dir: /sys/src/ape/lib/ap/plan9/execle.c/
#include <unistd.h> int execle(const char *name, const char *arg0, const char *, ...) { char *p; for(p=(char *)(&name)+1; *p; ) p++; return execve(name, &arg0, (char **)p+1); }