ref: 908dba2489d98dab1f1e9a3e8ba9d45aa65a3511 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