ref: 0d7e3fd4a27a8494d8e513b43cac12b7d9b9dea6 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