03-14-2011
Howto compile my own module into the kernel
Hi there,
I'm currently writing a program/module which makes use of the Linux Security Modules (LSM), which provide hooks for some security .
The bad thing about it is: The function to set the hook to the LSM is not exported. That means, I can't just write a loadable kernel module, but have to compile my code directly into the kernel.
Unfortunately I have only experience with writing loadable kernel modules so far, now I would like to know what do I have to do to compile my code into the kernel?
Googleing only told me how to load a module, so hopefully you can help me
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
I have the following simple CGI script, just containg header:
#!/usr/bin/perl -w
use CGI ':standard';
use lib "/home/myname/lib/perl5/site_perl/5.8.5/";
use Mail::Sendmail;
I also have included this directive in ~/public_html/.htaccess :
SetEnv PERL5LIB... (0 Replies)
Discussion started by: monkfan
0 Replies
2. SuSE
Hi All,
Is there a max number of slabs that can be used per kernel module? I'm having a tough time finding out that kind of information, but the array 'node_zonelists' (mmzone.h) has a size of 5. I just want to avoid buffer overruns and other bad stuff.
Cheers,
Brendan (4 Replies)
Discussion started by: Brendan Kennedy
4 Replies
3. Linux
Hi all,
I am working on USB data monitoring on Fedora Core 9. Kernel 2.6.25 has a built-in module (the one that isn't loadable, but compiles and links statically with the kernel during compilation) to snoop USB data. It is in <kernel_source_code>/drivers/usb/mon/.
I need to know if I can... (0 Replies)
Discussion started by: anitemp
0 Replies
4. Linux
Hi All,
I try to compile new kernel in FC5.
New kernel version - 2.6.20.21
Operating System - Fedora 5
I have followed these steps,
make menuconfig
make
make modules
make modules_install
make install
Then i have changed the grub.cong and reboot the system with new kernel.
The... (0 Replies)
Discussion started by: viveksnv
0 Replies
5. Debian
Hello Friends,
I know how to compile the kernel .
But I don't know how to compile the kernel with OFED.
Can any one assist me on that.
Or can anyone send me the link.
Thank you. (0 Replies)
Discussion started by: pradeepreddy
0 Replies
6. Linux
Dear experts,
How can compile the kernel as application mode?
Thanks in advance. (2 Replies)
Discussion started by: Zaxon
2 Replies
7. Ubuntu
Hi
I'm compiling a real-time kernel in linux, but after I type make bzImage things end with this:
(Things going well doing CC and things)....
CC arch/x86/kernel/kgdb.o
CC arch/x86/kernel/vm86_32.o
CC arch/x86/kernel/early_printk.o
CC arch/x86/kernel/ipipe.o... (2 Replies)
Discussion started by: mdop
2 Replies
8. Ubuntu
Is there any way to compile smbfs module in kernel 3.10 running Ubuntu 12.04 LTS. I did a 'make menuconfig' and it shows cifs. I found out online that smbfs is deprecated and replaced by cifs. I have an old system with kernel version 2.4 which only has smbfs (no cifs). Is it possible to compile... (1 Reply)
Discussion started by: Monil
1 Replies
9. Linux
Hi everyone,
I am trying to prevent the ehci_hcd kernel module to load at boot time.
Here's what I've tried so far:
1) Add the following line to /etc/modprobe.d/blacklist.conf (as suggested here):
2) Blacklisted the module by adding the following string to
3) Tried to blacklist the module... (0 Replies)
Discussion started by: gacanepa
0 Replies
10. Solaris
Hi,
I need to install php 5.5.30 as an apache (2.4.17) module on Solaris 10.
Please any help is wellcome.
Some aditional info:
/usr/sfw/bin/gcc -v
Reading specs from /usr/sfw/lib/gcc/sparc-sun-solaris2.10/3.4.3/specs
bash-3.2# g++ -v
Reading specs from... (0 Replies)
Discussion started by: lbslbs
0 Replies
KLD(4) BSD Kernel Interfaces Manual KLD(4)
NAME
kld -- dynamic kernel linker facility
DESCRIPTION
The LKM (Loadable Kernel Modules) facility has been deprecated in FreeBSD 3.0 and above in favor of the kld interface. This interface, like
its predecessor, allows the system administrator to dynamically add and remove functionality from a running system. This ability also helps
software developers to develop new parts of the kernel without constantly rebooting to test their changes.
Various types of modules can be loaded into the system. There are several defined module types, listed below, which can be added to the sys-
tem in a predefined way. In addition, there is a generic type, for which the module itself handles loading and unloading.
The FreeBSD system makes extensive use of loadable kernel modules, and provides loadable versions of most file systems, the NFS client and
server, all the screen-savers, and the iBCS2 and Linux emulators. kld modules are placed by default in the /boot/kernel directory along with
their matching kernel.
The kld interface is used through the kldload(8), kldunload(8) and kldstat(8) programs.
The kldload(8) program can load either a.out(5) or ELF formatted loadable modules. The kldunload(8) program unloads any given loaded module,
if no other module is dependent upon the given module. The kldstat(8) program is used to check the status of the modules currently loaded
into the system.
Kernel modules may only be loaded or unloaded if the system security level kern.securelevel is less than one.
MODULE TYPES
Device Driver modules
New block and character device drivers may be loaded into the system with kld. Device nodes for the loaded drivers are automatically created
when a module is loaded and destroyed when it is unloaded by devfs(5). You can specify userland programs that will run when new devices
become available as a result of loading modules, or existing devices go away when modules are unloaded, by configuring devd(8).
FILES
/boot/kernel directory containing module binaries built for the kernel also residing in the directory.
/usr/include/sys/module.h file containing definitions required to compile a kld module
/usr/share/examples/kld example source code implementing a sample kld module
SEE ALSO
kldfind(2), kldfirstmod(2), kldload(2), kldnext(2), kldstat(2), kldunload(2), devfs(5), devd(8), kldload(8), kldstat(8), kldunload(8),
sysctl(8)
HISTORY
The kld facility appeared in FreeBSD 3.0 and was designed as a replacement for the lkm facility, which was similar in functionality to the
loadable kernel modules facility provided by SunOS 4.1.3.
AUTHORS
The kld facility was originally implemented by Doug Rabson <dfr@FreeBSD.org>.
BUGS
If a module B, is dependent on another module A, but is not compiled with module A as a dependency, then kldload(8) fails to load module B,
even if module A is already present in the system.
If multiple modules are dependent on module A, and are compiled with module A as a dependency, then kldload(8) loads an instance of module A
when any of the modules are loaded.
If a custom entry point is used for a module, and the module is compiled as an 'ELF' binary, then kldload(8) fails to execute the entry
point.
kldload(8) points the user to read dmesg(8) for any error encountered while loading a module.
When system internal interfaces change, old modules often cannot detect this, and such modules when loaded will often cause crashes or myste-
rious failures.
BSD
January 13, 2014 BSD