Messages in this thread | | | From | Stephen Hemminger <> | Subject | Re: [Question] how to follow a symlink via a dentry? | Date | Tue, 23 May 2006 10:08:47 -0700 |
| |
On Tue, 23 May 2006 12:56:03 -0400 Steven Rostedt <rostedt@goodmis.org> wrote:
> What is the best way from inside the kernel, to find the dentry that > another dentry points to via symlink? > > Scenario: > > I have a kobj of a device in the sysfs system. Inside a directory of > the kobj, is a symlink to another device I need to get. I can find the > dentry of the symlink, but I haven't found a good way to get to the > dentry of what the symlink points to. > > Is there a standard way to do this, or do I need to start hacking at the > follow_link of the sysfs directory to get what I want? > > Do I need to hack up something like page_readlink to get the path, and > then do vfs_follow_link to get the rest. Another thing is that I can't > rely on what current->fs points to. > > Thanks, > > -- Steve >
Sysfs reflects kernel object linkage, you should not be using file access to find kernel objects. You should use the pointers instead. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |