ref: d9eecc2d1a05bee01d8dc8d7c331f78c223bdce3 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; }