diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/devpts/inode.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index 7a20d673bb8a..472e6befc54d 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -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); |