Filename in Kernel Module file_operations.read

[jdparent]

I'm writing a kernel module that will create a directory in /proc and will dynamically create a set of files based on parameters passed in when the module is loaded. I want to have a single read function for all these files and then figure out which file it is from inside that function.

So if I do a `cat /proc/registers/2` I'd call procfs_read_registers and somehow figure out that I'm reading "2".

static ssize_t procfs_read_registers(
  struct file *filp,
  char *buff,
  size_t len,
  loff_t *offset)
{
  // Find File Name and write back the data for that register.
}

static const struct file_operations procfs_operations_registers = 
{
  .owner = THIS_MODULE,
  .open = procfs_open_registers,
  .read = procfs_read_registers,
  .release = procfs_read_registers,
};

Dug through the kernel source but between that and the man pages I'm a bit lost.

[jdparent]

Figured it out.

filp->f_path.dentry->d_iname