man:unimplemented(2)

UNIMPLEMENTED(2) Linux Programmer's Manual UNIMPLEMENTED(2) NAME afs_syscall, break, ftime, getpmsg, gtty, lock, mpx, prof, profil, putpmsg, security, stty, ulimit - unimplemented system calls SYNOPSIS Unimplemented system calls. DESCRIPTION These system calls are not implemented in the Linux 2.4 kernel. RETURN VALUE These system calls always return -1 and set errno to ENOSYS. NOTES Note that ftime(3), profil(3) and ulimit(3) are implemented as library functions. Some system calls, like alloc_hugepages(2), free_hugepages(2), iop- erm(2), iopl(2), and vm86(2) only exist on certain architectures. Some system calls, like ipc(2), create_module(2), init_module(2), and delete_module(2) only exist when the Linux kernel was built with sup- port for them. SEE ALSO obsolete(2) Linux 2.4 2003-02-28 UNIMPLEMENTED(2)