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 2.6. April 2016 DEBUGFS_CREATE_FILE_(9)