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create_module(2) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | HISTORY | SEE ALSO | COLOPHON

create_module(2)           System Calls Manual           create_module(2)

NAME         top

       create_module - create a loadable module entry

SYNOPSIS         top

       #include <linux/module.h>
       [[deprecated]] caddr_t create_module(const char *name, size_t size);

DESCRIPTION         top

       Note: This system call is present only before Linux 2.6.
       create_module() attempts to create a loadable module entry and
       reserve the kernel memory that will be needed to hold the module.
       This system call requires privilege.

RETURN VALUE         top

       On success, returns the kernel address at which the module will
       reside.  On error, -1 is returned and errno is set to indicate the
       error.

ERRORS         top

       EEXIST A module by that name already exists.
       EFAULT name is outside the program's accessible address space.
       EINVAL The requested size is too small even for the module header
              information.
       ENOMEM The kernel could not allocate a contiguous block of memory
              large enough for the module.
       ENOSYS create_module() is not supported in this version of the
              kernel (e.g., Linux 2.6 or later).
       EPERM  The caller was not privileged (did not have the
              CAP_SYS_MODULE capability).

STANDARDS         top

       Linux.

HISTORY         top

       Removed in Linux 2.6.
       This obsolete system call is not supported by glibc.  No
       declaration is provided in glibc headers, but, through a quirk of
       history, glibc versions before glibc 2.23 did export an ABI for
       this system call.  Therefore, in order to employ this system call,
       it was sufficient to manually declare the interface in your code;
       alternatively, you could invoke the system call using syscall(2).

SEE ALSO         top

       delete_module(2), init_module(2), query_module(2)

COLOPHON         top

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.15.tar.gz
       fetched from
       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
       2025-08-11.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-
       to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to
       man-pages@man7.org
Linux man-pages 6.15            2025-05-17               create_module(2)

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Pages that refer to this page: delete_module(2),  get_kernel_syms(2),  init_module(2),  query_module(2),  syscalls(2),  unimplemented(2),  systemd.exec(5)

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