ref: 80a1d1ab934b9dcb89833410a48f9da7260c32fe dir: /sys/src/ape/lib/ap/plan9/setuid.c/
#include <sys/types.h> #include <unistd.h> #include <errno.h> /* * BUG: never works */ int setuid(uid_t uid) { errno = EPERM; return -1; }