From mboxrd@z Thu Jan  1 00:00:00 1970
From: rishi.b.agrawal@gmail.com (Rishi Agrawal)
Date: Tue, 7 Aug 2012 20:11:45 +0530
Subject: How to get the inode - no path_lookup
Message-ID: <CADDndfOdwMKt_ZQfOwAStKUmfd+=t_27ypoj-aePwU3Lo6mB8g@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hi All,


I had a module which used the path_lookup function to print the details of
any file's inode. I now want to rewrite that module in order to show some
juniors how to write some code in kernel.

I am using 3.4.6 kernel, I tried finding out path_lookup but google showed
that it has been removed.

I tried the following code then which did not work

.
.
.
dentry = kern_path_create(AT_FDCWD, filename, &path, 1);

if (IS_ERR(dentry)) {
              printk("Failed to obtain the dentry");
               return;
       }

its not returning dentry

I again tried after seeing the implementation of vfs_stat function

user_path_at(AT_FDCWD, filename, lookup_flags, &path);

but this also fails.


I am using a proc interface to pass the filename, and copying the filename
into a kernel buffer.

How can I get a copy of vfs inode for a file name.


-- 
Regards,
Rishi Agrawal
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