Subversion Repositories or1k

/*

 * Directory notification for Linux

 *

 * Copyright (C) 2000,2002 Stephen Rothwell

 */

struct dnotify_struct {

        struct dnotify_struct * dn_next;

        unsigned long           dn_mask;        /* Events to be notified

                                                   see linux/fcntl.h */

        int                     dn_fd;

        struct file *           dn_filp;

        fl_owner_t              dn_owner;

};

extern void __inode_dir_notify(struct inode *, unsigned long);

extern void dnotify_flush(struct file *filp, fl_owner_t id);

extern int fcntl_dirnotify(int, struct file *, unsigned long);

static inline void inode_dir_notify(struct inode *inode, unsigned long event)

{

        if ((inode)->i_dnotify_mask & (event))

                __inode_dir_notify(inode, event);

}

/*

 * This is hopelessly wrong, but unfixable without API changes.  At

 * least it doesn't oops the kernel...

 */

static inline void dnotify_parent(struct dentry *dentry, unsigned long event)

{

        struct dentry *parent;

        spin_lock(&dcache_lock);

        parent = dentry->d_parent;

        if (parent->d_inode->i_dnotify_mask & event) {

                dget(parent);

                spin_unlock(&dcache_lock);

                __inode_dir_notify(parent->d_inode, event);

                dput(parent);

        } else

                spin_unlock(&dcache_lock);

}