Problem with registering security structure.

["Prasad Joshi" <prasadjoshi124@xxxxxxxxx>]

Hi All,

I way trying to make use of         struct security_operations      and add a hook on inode_create, but my module is not getting loaded.

This is how my code look like.

#define MY_NAME "Some_String"

int inode_created (struct inode *dir, struct dentry *dentry, int mode)
{
    printk (KERN_INFO "Inode Created.\n" );
    return 0 ;
}

struct security_operations my_security =
{
    .inode_create = inode_created
} ;

static int __init initialize_module (void)
{  
    /* register ourselves with the security framework */
    if (register_security (&my_security)) 
    {
        printk (KERN_INFO "Failure registering Root Plug module with the kernel\n");

        /* try registering with primary module */
        if (mod_reg_security (MY_NAME, &my_security)) 
        {
            printk (KERN_INFO "Failure registering Root Plug module with primary security module.\n");
            return -EINVAL;
        }
        secondary = 1;
    }
    return 0 ;
}

.......
......

Code is compiled successfully. But, when I try inserting modules it gives me error

root@prasad-desktop:/home/prasad/programs/ldd/inode_hooks# insmod inode_hook.ko 
insmod: error inserting 'inode_hook.ko': -1 Invalid parameters

Code for       register_security()       is 

int register_security(struct security_operations *ops)
{
    if (verify(ops)) {
        printk(KERN_DEBUG "%s could not verify "
               "security_operations structure.\n", __FUNCTION__);
        return -EINVAL;
    }

    if (security_ops != &dummy_security_ops)
        return -EAGAIN;

    security_ops = ops;

    return 0;
}

static inline int verify(struct security_operations *ops)
{
    /* verify the security_operations structure exists */
    if (!ops)
        return -EINVAL;
    security_fixup_ops(ops);
    return 0;
}

A main surprise to me is only these two messages are printed there in dmesg. 

Mar 10 16:34:53 prasad-desktop kernel: [  756.143003
] Failure registering Root Plug module with the kernel
Mar 10 16:34:53 prasad-desktop kernel: [  756.143015] Failure registering Root Plug module with primary security module.


Please help...........
Thanks in advance.

Thanks and Regards,
Prasad.