proc_create() example for kernel module

Question

Can someone give me proc_create() example?

Earlier they used create_proc_entry() in the kernel but now they are using proc_create()<

Answer 1

Here is a 'hello_proc' code, which makes use of the newer 'proc_create()' interface.

#include 
#include 
#include 

static int hello_proc_show(struct seq_file *m, void *v) {
  seq_printf(m, "Hello proc!\n");
  return 0;
}

static int hello_proc_open(struct inode *inode, struct  file *file) {
  return single_open(file, hello_proc_show, NULL);
}

static const struct file_operations hello_proc_fops = {
  .owner = THIS_MODULE,
  .open = hello_proc_open,
  .read = seq_read,
  .llseek = seq_lseek,
  .release = single_release,
};

static int __init hello_proc_init(void) {
  proc_create("hello_proc", 0, NULL, &hello_proc_fops);
  return 0;
}

static void __exit hello_proc_exit(void) {
  remove_proc_entry("hello_proc", NULL);
}

MODULE_LICENSE("GPL");
module_init(hello_proc_init);
module_exit(hello_proc_exit);

This code has been taken from http://pointer-overloading.blogspot.com/2013/09/linux-creating-entry-in-proc-file.html