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CREATE_MODULE(2) Linux Programmer's Manual CREATE_MODULE(2)

NAME

     create_module - create a loadable module entry

SYNOPSIS

     #include <linux/module.h>

     caddr_t create_module(const char *name, size_t size);

     Note:  No declaration of this system call is provided in glibc headers;
     see NOTES.

DESCRIPTION

     Note: This system call is present only in kernels 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

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

ERRORS

     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., the kernel is version 2.6 or later).

     EPERM  The caller was not privileged (did not have  the  CAP_SYS_MODULE
            capability).

VERSIONS

     This  system  call is present on Linux only up until kernel 2.4; it was
     removed in Linux 2.6.

CONFORMING TO

     create_module() is Linux-specific.

NOTES

     This obsolete system call is not supported by glibc.  No declaration is
     provided  in glibc headers, but, through a quirk of history, glibc ver-
     sions before 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).