Messages in this thread |  | | | From | Roland Kuhn <> | | Subject | Re: Two questions regarding Opening files within Kernel! | | Date | Sat, 7 Apr 2007 11:22:57 +0200 | |
Hi!
On 7 Apr 2007, at 08:58, JanuGerman wrote:
> 1) I have just a file path with me, an absolute path, but no
> dentry, no inode, no vfsmount object, which function i can call to
> get a "file" object associated with the absoulte file path. I have
> surfed arround the source code especially fs/open.c and some other
> files, but each function requires a parameter "mode" and "fd"
> beside file path. Actually, i was confuse about the "mode"
> parameter (and its differece with "flag"), like what to send, and
> secondly for "fd", i am not sure, what value to send as there is no
> file infact and only file path exists. Any idea?
>
No, but I'm no guru either.
> 2) Any functionality within linux kernel source code, to read one
> line per file? or some indirect way to set buffer size for one
> read?. That is, any existing header file for doing text I/O rather
> than binary within the kernel source code?
>
Do you have a compelling reason for not letting userspace feed the
file to your driver? That would be the natural and much easier way, I
suppose...
Ciao,
Roland
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