Re: [PATCH] filename in tapset nfs.proc.open and nfs.proc.release

[hai wu <haiwu.us@gmail.com>]

It turns out the above works fine in RHEL5.9 but not in RHEL6. In
RHEL6, the line needs to be changed to the following instead:

filename = task_dentry_path(task_current(), $filp->f_path->dentry,
$filp->f_path->mnt)

On Sat, Dec 13, 2014 at 10:35 PM, hai wu <haiwu.us@gmail.com> wrote:
> tapset nfs.proc.open and nfs.proc.release in nfs_proc.stp only records
> file's basename, which is not helpful when we use it to monitor NFS
> file access activities.
>
> The following patch would allow us to be able to see the full path for
> NFS file, along with its NFS mount information.
>
> diff --git a/tapset/linux/nfs_proc.stp b/tapset/linux/nfs_proc.stp
> index 1339aee..5a804e4 100644
> --- a/tapset/linux/nfs_proc.stp
> +++ b/tapset/linux/nfs_proc.stp
> @@ -1658,7 +1658,7 @@ probe nfs.proc.open = kernel.function("nfs_open") !,
>         prot = get_prot_from_client(client)
>         version = __nfs_version($inode)
>
> -       filename = __file_filename($filp)
> +  filename = task_dentry_path(task_current(), $filp->f_dentry, $filp->f_vfsmnt)
>         flag = $filp->f_flags
>         mode = $filp->f_mode
>
> @@ -1693,7 +1693,7 @@ probe nfs.proc.release = kernel.function("nfs_release") !,
>         prot = get_prot_from_client(client)
>         version = __nfs_version($inode)
>
> -       filename = __file_filename($filp)
> +  filename = task_dentry_path(task_current(), $filp->f_dentry, $filp->f_vfsmnt)
>         flag = $filp->f_flags
>         mode = $filp->f_mode