Hi,
I want to add a virtual file under /proc for my module (kernel 2.4.21). The
"registration" seems to work because /proc/foo shows up once my module is
loaded. Here's the call:
create_proc_read_entry("foo", 0, NULL, foo_read, NULL);
My problem is that nothing shows up when I read foo with 'cat' or 'less'.
Here's foo():
int foo_read(char *buf, char **start, off_t offset, int count, int *eof,
void *data)
{
printk("Got into foo_read\n");
int len = sprintf(buf, "hello");
*eof = 1;
return len;
}
As you can see, I've used printk() in the hope of asserting that foo() is
called. Unfortunately, I can't see anything in /var/log/messages. I don't
even know if I should expect printk() to work in this context. I tried both
with and without with the same result.
What am I missing?
Thanks,
JP
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