src/stdio/fileno.c

   1 #include "stdio_impl.h"
   2 #include <errno.h>
   3
   4 int fileno(FILE *f)
   5 {
   6         FLOCK(f);
   7         int fd = f->fd;
   8         FUNLOCK(f);
   9         if (fd < 0) {
  10                 errno = EBADF;
  11                 return -1;
  12         }
  13         return fd;
  14 }
  15
  16 weak_alias(fileno, fileno_unlocked);