#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/limits.h>
char *
getlogin_r(char *buf, int len)
{
int f, n;
f = open("/dev/user", O_RDONLY);
if(f < 0)
return 0;
n = read(f, buf, len);
buf[len-1] = 0;
close(f);
return (n>=0)? buf : 0;
}
char *
getlogin(void)
{
static char buf[NAME_MAX+1];
return getlogin_r(buf, sizeof(buf));
}
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