DEBUGFS_CREATE_FILE(9) The debugfs filesystem DEBUGFS_CREATE_FILE(9)NAME
debugfs_create_file - create a file in the debugfs filesystem
SYNOPSIS
struct dentry * debugfs_create_file(const char * name, mode_t mode,
struct dentry * parent,
void * data,
const struct file_operations * fops);
ARGUMENTS
name
a pointer to a string containing the name of the file to create.
mode
the permission that the file should have
parent
a pointer to the parent dentry for this file. This should be a
directory dentry if set. If this paramater is NULL, then the file
will be created in the root of the debugfs filesystem.
data
a pointer to something that the caller will want to get to later
on. The inode.i_private pointer will point to this value on the
open call.
fops
a pointer to a struct file_operations that should be used for this
file.
DESCRIPTION
This is the basic “create a file” function for debugfs. It allows for a
wide range of flexibility in createing a file, or a directory (if you
want to create a directory, the debugfs_create_dir function is
recommended to be used instead.)
This function will return a pointer to a dentry if it succeeds. This
pointer must be passed to the debugfs_remove function when the file is
to be removed (no automatic cleanup happens if your module is unloaded,
you are responsible here.) If an error occurs, NULL will be returned.
If debugfs is not enabled in the kernel, the value -ENODEV will be
returned.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 DEBUGFS_CREATE_FILE(9)