ref: 7f8c46e27f55c89bef41f7e089d1f6f276c1696c dir: /sys/src/cmd/aux/flashfs/aux.h/
void* emalloc9p(ulong sz); void* erealloc9p(void *v, ulong sz); char* estrdup9p(char *s); #define DMDIR CHDIR