DEBUGFS_CREATE_FILE_(9)               The debugfs filesystem              DEBUGFS_CREATE_FILE_(9)



NAME
       debugfs_create_file_size - create a file in the debugfs filesystem

SYNOPSIS
       struct dentry * debugfs_create_file_size(const char * name, umode_t mode,
                                                struct dentry * parent, void * data,
                                                const struct file_operations * fops,
                                                loff_t file_size);

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 parameter 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.

       file_size
           initial file size

DESCRIPTION
       This is the basic “create a file” function for debugfs. It allows for a wide range of
       flexibility in creating 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.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   DEBUGFS_CREATE_FILE_(9)