fs/devpts/inode.c

149 struct vfsmount *devpts_mntget(struct file *filp, struct pts_fs_info *fsi)
166 	    (DEVPTS_SB(path.mnt->mnt_sb) != fsi))
170 		if (DEVPTS_SB(path.mnt->mnt_sb) == fsi)
212 void devpts_release(struct pts_fs_info *fsi)
214 	deactivate_super(fsi->sb);
310 	struct pts_fs_info *fsi = DEVPTS_SB(sb);
311 	struct pts_mount_opts *opts = &fsi->mount_opts;
318 	if (fsi->ptmx_dentry) {
349 	fsi->ptmx_dentry = dentry;
356 static void update_ptmx_mode(struct pts_fs_info *fsi)
359 	if (fsi->ptmx_dentry) {
360 		inode = d_inode(fsi->ptmx_dentry);
361 		inode->i_mode = S_IFCHR|fsi->mount_opts.ptmxmode;
368 	struct pts_fs_info *fsi = DEVPTS_SB(sb);
369 	struct pts_mount_opts *opts = &fsi->mount_opts;
379 	update_ptmx_mode(fsi);
386 	struct pts_fs_info *fsi = DEVPTS_SB(root->d_sb);
387 	struct pts_mount_opts *opts = &fsi->mount_opts;
411 	struct pts_fs_info *fsi;
413 	fsi = kzalloc(sizeof(struct pts_fs_info), GFP_KERNEL);
414 	if (!fsi)
417 	ida_init(&fsi->allocated_ptys);
418 	fsi->mount_opts.mode = DEVPTS_DEFAULT_MODE;
419 	fsi->mount_opts.ptmxmode = DEVPTS_DEFAULT_PTMX_MODE;
420 	fsi->sb = sb;
422 	return fsi;
491 	struct pts_fs_info *fsi = DEVPTS_SB(sb);
493 	if (fsi)
494 		ida_destroy(&fsi->allocated_ptys);
495 	kfree(fsi);
511 int devpts_new_index(struct pts_fs_info *fsi)
516 			  (fsi->mount_opts.reserve ? 0 : pty_reserve)))
519 	index = ida_alloc_max(&fsi->allocated_ptys, fsi->mount_opts.max - 1,
528 void devpts_kill_index(struct pts_fs_info *fsi, int idx)
530 	ida_free(&fsi->allocated_ptys, idx);
536  * @fsi: Filesystem info for this instance.
543 struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv)
546 	struct super_block *sb = fsi->sb;
553 	opts = &fsi->mount_opts;