From mboxrd@z Thu Jan  1 00:00:00 1970
From: mohit89mlnc@gmail.com (mohit verma)
Date: Tue, 22 Feb 2011 20:48:18 +0530
Subject: adding a system call
In-Reply-To: <AANLkTi=1wH+uVCPEGhXB7_UnAQp61ayKO6vee5Lg7GaD@mail.gmail.com>
References: <AANLkTi=1wH+uVCPEGhXB7_UnAQp61ayKO6vee5Lg7GaD@mail.gmail.com>
Message-ID: <AANLkTin_GxoXJai071w81mgkVeCX6awTsYFrvccXHOWE@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

hi all ,

> i followed the link and tried to add a system call in kernel-version 2.6.37
>
> here is the code :
>
>
> #include<linux/linkage.h>
> #include<linux/kernel.h>
> #include<linux/fs.h>  //for getname
> #include<linux/err.h> //for PTR_ERR
> asmlinkage int sys_hariohm(const char __user *filename)
> {
>     char *tmp = getname(filename);
>      int fd=PTR_ERR(tmp);
>         if (!IS_ERR(tmp))
>         {
>         printk("filename %s \n",tmp);
>         putname(tmp);
>         return fd;
>         }
>         else
>         {
>         return 2;
>         }
> }
>
>
> the compilation process was silent (without any error).
>  but when i try to boot into the kernel having this system call , i get the
> errors like :
>
> do_exit() ,do_group_exit() , syscall_init() error lines with some
> addresses.
>
> can someone help me understand what is wrong with this code?
>
> thanks in advance :)
>
> and also when i  tried to boot into this kernel , it was showing some *
initrafs*  error.

> --
> ........................
> *MOHIT VERMA*
>
>


-- 
........................
*MOHIT VERMA*
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