afs_syscall, break, fattach, fdetach, ftime, getmsg, getpmsg, gtty, isastream,
lock, madvise1, mpx, prof, profil, putmsg, putpmsg, security, stty, tuxcall,
ulimit, vserver - unimplemented system calls
Unimplemented system calls.
These system calls are not implemented in the Linux kernel.
These system calls always return -1 and set errno
Note that ftime(3)
, and ulimit(3)
implemented as library functions.
Some system calls, like alloc_hugepages(2)
, and vm86(2)
exist only on certain
Some system calls, like ipc(2)
, and delete_module(2)
exist only when the Linux
kernel was built with support for them.
This page is part of release 4.15 of the Linux man-pages
description of the project, information about reporting bugs, and the latest
version of this page, can be found at