ref: 1d891d163e814a93ee5346cf05b4fac297bf3a5c
dir: /sys/src/ape/lib/ap/plan9/cuserid.c/
#include <unistd.h> #include <stdio.h> #include <string.h> /* * BUG: supposed to be for effective uid, * but plan9 doesn't have that concept */ char * cuserid(char *s) { char *logname; static char buf[L_cuserid]; if((logname = getlogin()) == NULL) return(NULL); if(s == 0) s = buf; strncpy(s, logname, sizeof buf); return(s); }