HelenOS sources
fileno 195 uspace/app/bdsh/cmds/modules/cat/cat.c fd = fileno(stdin);
fileno 130 uspace/app/kio/kio.c vfs_sync(fileno(log));
fileno 175 uspace/lib/bithenge/src/file.c int fd = fileno(file);
fileno 215 uspace/lib/c/include/stdio.h extern int fileno(FILE *);
fileno 179 uspace/lib/pcut/src/os/helenos.c fileno(stdin), tempfile, tempfile);
fileno 215 uspace/lib/posix/include/libc/stdio.h extern int fileno(FILE *);
fileno 54 uspace/lib/posix/include/posix/stdio.h extern int fileno(FILE *);
fileno 50 uspace/lib/posix/include/posix/unistd.h #define STDIN_FILENO (fileno(stdin))
fileno 51 uspace/lib/posix/include/posix/unistd.h #define STDOUT_FILENO (fileno(stdout))
fileno 52 uspace/lib/posix/include/posix/unistd.h #define STDERR_FILENO (fileno(stderr))
HelenOS homepage, sources at GitHub