linux kernel: how to remove a file in kernel space

Question

I know this is strongly not recommended. But does is possible to do this in kernel space.

Given the file path, can we remove the corresponding file in kernel space?

Answer 1

Maybe it's too late, I'll try to reply. As Tsyvarev said in his comment probably you are looking for the vfs_unlink function that you can find here namei.c. Before the implementation there is a description, but a simple example can be this one /* fcheck's prototype is in linux/fdtable.h and returns a file pointer given a given a file descriptor */

struct file *filp= fcheck(fd);
struct inode *parent_inode = filp->f_path.dentry->d_parent->d_inode;
inode_lock(parent_inode);
vfs_unlink(parent_inode, filp->f_path.dentry, NULL);    
inode_unlock(parent_inode);

I hope it's can be useful to someone.