TTY: devpts, document devpts inode operations (1dcb8e6d) · Commits · 戴 / test

fs/devpts/inode.c

+21 −0

Original line number	Diff line number	Diff line
		@@ -545,6 +545,15 @@ void devpts_kill_index(struct inode *ptmx_inode, int idx)
		mutex_unlock(&allocated_ptys_lock);
		}

		/**
		* devpts_pty_new -- create a new inode in /dev/pts/
		* @ptmx_inode: inode of the master
		* @device: major+minor of the node to be created
		* @index: used as a name of the node
		* @priv: what's given back by devpts_get_priv
		*
		* The created inode is returned. Remove it from /dev/pts/ by devpts_pty_kill.
		*/
		struct inode devpts_pty_new(struct inode ptmx_inode, dev_t device, int index,
		void *priv)
		{
		@@ -585,6 +594,12 @@ struct inode devpts_pty_new(struct inode ptmx_inode, dev_t device, int index,
		return inode;
		}

		/**
		* devpts_get_priv -- get private data for a slave
		* @pts_inode: inode of the slave
		*
		* Returns whatever was passed as priv in devpts_pty_new for a given inode.
		*/
		void devpts_get_priv(struct inode pts_inode)
		{
		struct dentry *dentry;
		@@ -605,6 +620,12 @@ void devpts_get_priv(struct inode pts_inode)
		return priv;
		}

		/**
		* devpts_pty_kill -- remove inode form /dev/pts/
		* @inode: inode of the slave to be removed
		*
		* This is an inverse operation of devpts_pty_new.
		*/
		void devpts_pty_kill(struct inode *inode)
		{
		struct super_block *sb = pts_sb_from_inode(inode);