6 int ttyname_r(int fd, char *name, size_t size)
9 char procname[sizeof "/proc/self/fd/" + 3*sizeof(int) + 2];
12 if (!isatty(fd)) return errno;
14 __procfdname(procname, fd);
15 l = readlink(procname, name, size);
17 if (l < 0) return errno;
18 else if (l == size) return ERANGE;
22 if (stat(name, &st1) || fstat(fd, &st2))
24 if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)