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DEBUGFS_CREATE_FILE_(9) The debugfs filesystem DEBUGFS_CREATE_FILE_(9)

NAME

debugfs_create_file_unsafe - create a file in the debugfs filesystem

SYNOPSIS

struct dentry * debugfs_create_file_unsafe(const char * name, umode_t mode, struct dentry * parent, void * data, const struct file_operations * fops);

ARGUMENTS

const char * name

a pointer to a string containing the name of the file to create.

umode_t mode

the permission that the file should have.

struct dentry * 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.

void * 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.

const struct file_operations * fops

a pointer to a struct file_operations that should be used for this file.

DESCRIPTION

debugfs_create_file_unsafe is completely analogous to debugfs_create_file, the only difference being that the fops handed it will not get protected against file removals by the debugfs core.

It is your responsibility to protect your struct file_operation methods against file removals by means of debugfs_use_file_start and debugfs_use_file_finish. ->open is still protected by debugfs though.

Any struct file_operations defined by means of DEFINE_DEBUGFS_ATTRIBUTE is protected against file removals and thus, may be used here.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12