[ale] Programming /proc

[Benjamin Dixon]

Hi all,

I'm trying to write a kernel module that has proc support but I don't
fully understand the new calling procedures under 2.4. I have successfully
set up my module code (easy enough) and now I want to let the user access
some information using my output function which I register for "read" in a
file_operations structure. So my function prototype looks like this:

static ssize_t output(struct file *file, char *buffer, size_t len,
                      loff_t *offset);

My only problem is, I'm not entirely sure how to handle the *file. Does
anyone know where that structure is defined? I've searched through the
kernel, specifically includes, but can't find it. And more generally, does
anyone know of a good resource for *2.4 kernel* /proc programming, its a
bit different from 2.2 and previous kernels and I can't find any updated
information. (BTW, I did find a procfs_example.c file in the Documentation
directory but it doesn't tell me what I want to know, which is what those
structures look like).

Ben


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