I wrote a kernel module that did a virtual network protocol and library that provide interface for application use to interact with the kernel module by ioctl actions.
insmod the module and unload the module, there will be no problem. But once I call the library with my example application. The system freezed. And there is almost no any information on the console. So Are there any better solutions to track what happened?
Hi,
We are in the process of migrating from AIX to Linux. There is a script of type "executable (RISC System/6000) or object module not stripped" on AIX and we are unable to read the contents of it.
Is there a way to read the contents of the file on AIX, so that we can rewrite the code in... (3 Replies)
Hello friends
Today i have changed my passwd policy for strong password
Everything is working correctly but when i changed my password , it did not ask me my old password
my /etc/pam.d/system-auth file is (only passwdqc.so module line)
password required pam_passwdqc.so retry=3... (0 Replies)
All,
Kindly let me know command which is used to trace the system calls on HP - UX server when an executable is run.
On Solaris we have TRUSS which does the need. On HP UX we have TUSC command which is a third party software. Currently this is not installed on my HP Server. If there... (3 Replies)
Hi,
My SCO server freezes suddenly. I just want to know if there any tools / commands availble that can find which is causing the freeze?
Any help on this would be greatly appreciated.
Regards,
Ravikumar R (4 Replies)
Hello,
I'm writing a linux driver that reading the data of a page frame of an process. But when I use it, it make immediately freeze the system. Can you help me? Thank for reading my question!
system: Ubuntu 9.04, kernel 2.6.28.15, Intel Duo
static int read_addr(int pid, unsigned long... (2 Replies)
Dear all,
I've just installed a Vanilla kernel (last stable version downloaded from www.kernel.org) as an exercice in order to better understand how to compile linux kernel. I loaded the .config file of the current kernel (Redhat kernel) in the menuconfig in order to restore all already... (0 Replies)
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)
Hi Everyone!
How can we make a socket() system call from a linux module executing in kernel space?
If any one knows, kindly tell me. It will be great.
I want to use the socket interface in linux kernel space for sending raw packets over the network.
Hamayun (0 Replies)
MODULE(9) BSD Kernel Developer's Manual MODULE(9)NAME
module -- structure describing a kernel module
DESCRIPTION
Each module in the kernel is described by a module_t structure. The structure contains the name of the device, a unique ID number, a pointer
to an event handler function and to an argument, which is given to the event handler, as well as some kernel internal data.
The DECLARE_MODULE(9) macro registers the module with the system.
When the module is loaded, the event handler function is called with the what argument set to MOD_LOAD.
On unload it is first called with what set to MOD_QUIESCE. If the unload was not forced, a non-zero return will prevent the unload from hap-
pening.
If the unload continues what is set to MOD_UNLOAD. If the module returns non-zero to this, the unload will not happen.
The difference between MOD_QUIESCE and MOD_UNLOAD is that the module should fail MOD_QUIESCE if it is currently in use, whereas MOD_UNLOAD
should only fail if it is impossible to unload the module, for instance because there are memory references to the module which cannot be
revoked.
When the system is shutting down, what contains the value of MOD_SHUTDOWN.
The module should return EOPNOTSUPP for unsupported and unrecognized values of what.
EXAMPLES
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/module.h>
static int foo_handler(module_t mod, int /*modeventtype_t*/ what,
void *arg);
static moduledata_t mod_data= {
"foo",
foo_handler,
NULL
};
MODULE_VERSION(foo, 1);
MODULE_DEPEND(foo, bar, 1, 3, 4);
DECLARE_MODULE(foo, mod_data, SI_SUB_EXEC, SI_ORDER_ANY);
SEE ALSO DECLARE_MODULE(9), DEV_MODULE(9), DRIVER_MODULE(9), MODULE_DEPEND(9), MODULE_VERSION(9), SYSCALL_MODULE(9)
/usr/share/examples/kld
AUTHORS
This manual page was written by Alexander Langer <alex@FreeBSD.org>.
BSD July 19, 2007 BSD
09-19-2009
How to trace the module after system freeze?