1451 static struct dentry *lookup_dcache(struct qstr *name, struct dentry *dir,  in lookup_dcache()  argument
1458 	dentry = d_lookup(dir, name);  in lookup_dcache()
1476 		dentry = d_alloc(dir, name);  in lookup_dcache()
1491 static struct dentry *lookup_real(struct inode *dir, struct dentry *dentry,  in lookup_real()  argument
1497 	if (unlikely(IS_DEADDIR(dir))) {  in lookup_real()
1502 	old = dir->i_op->lookup(dir, dentry, flags);  in lookup_real()
2387 	struct dentry *dir = nd->path.dentry;  in mountpoint_last()  local
2405 	mutex_lock(&dir->d_inode->i_mutex);  in mountpoint_last()
2406 	dentry = d_lookup(dir, &nd->last);  in mountpoint_last()
2413 		dentry = d_alloc(dir, &nd->last);  in mountpoint_last()
2415 			mutex_unlock(&dir->d_inode->i_mutex);  in mountpoint_last()
2418 		dentry = lookup_real(dir->d_inode, dentry, nd->flags);  in mountpoint_last()
2420 			mutex_unlock(&dir->d_inode->i_mutex);  in mountpoint_last()
2424 	mutex_unlock(&dir->d_inode->i_mutex);  in mountpoint_last()
2522 int __check_sticky(struct inode *dir, struct inode *inode)  in __check_sticky()  argument
2528 	if (uid_eq(dir->i_uid, fsuid))  in __check_sticky()
2553 static int may_delete(struct inode *dir, struct dentry *victim, bool isdir)  in may_delete()  argument
2562 	BUG_ON(victim->d_parent->d_inode != dir);  in may_delete()
2563 	audit_inode_child(dir, victim, AUDIT_TYPE_CHILD_DELETE);  in may_delete()
2565 	error = inode_permission(dir, MAY_WRITE | MAY_EXEC);  in may_delete()
2568 	if (IS_APPEND(dir))  in may_delete()
2571 	if (check_sticky(dir, inode) || IS_APPEND(inode) ||  in may_delete()
2581 	if (IS_DEADDIR(dir))  in may_delete()
2596 static inline int may_create(struct inode *dir, struct dentry *child)  in may_create()  argument
2598 	audit_inode_child(dir, child, AUDIT_TYPE_CHILD_CREATE);  in may_create()
2601 	if (IS_DEADDIR(dir))  in may_create()
2603 	return inode_permission(dir, MAY_WRITE | MAY_EXEC);  in may_create()
2650 int vfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,  in vfs_create()  argument
2653 	int error = may_create(dir, dentry);  in vfs_create()
2657 	if (!dir->i_op->create)  in vfs_create()
2661 	error = security_inode_create(dir, dentry, mode);  in vfs_create()
2664 	error = dir->i_op->create(dir, dentry, mode, want_excl);  in vfs_create()
2666 		fsnotify_create(dir, dentry);  in vfs_create()
2752 static int may_o_create(struct path *dir, struct dentry *dentry, umode_t mode)  in may_o_create()  argument
2754 	int error = security_path_mknod(dir, dentry, mode, 0);  in may_o_create()
2758 	error = inode_permission(dir->dentry->d_inode, MAY_WRITE | MAY_EXEC);  in may_o_create()
2762 	return security_inode_create(dir->dentry->d_inode, dentry, mode);  in may_o_create()
2784 	struct inode *dir =  nd->path.dentry->d_inode;  in atomic_open()  local
2796 	if (unlikely(IS_DEADDIR(dir))) {  in atomic_open()
2802 	if ((open_flag & O_CREAT) && !IS_POSIXACL(dir))  in atomic_open()
2852 	error = dir->i_op->atomic_open(dir, dentry, file, open_flag, mode,  in atomic_open()
2870 			fsnotify_create(dir, dentry);  in atomic_open()
2893 		fsnotify_create(dir, dentry);  in atomic_open()
2906 		dentry = lookup_real(dir, dentry, nd->flags);  in atomic_open()
2943 	struct dentry *dir = nd->path.dentry;  in lookup_open()  local
2944 	struct inode *dir_inode = dir->d_inode;  in lookup_open()
2950 	dentry = lookup_dcache(&nd->last, dir, nd->flags, &need_lookup);  in lookup_open()
2974 		if (!IS_POSIXACL(dir->d_inode))  in lookup_open()
2991 		error = vfs_create(dir->d_inode, dentry, mode,  in lookup_open()
3013 	struct dentry *dir = nd->path.dentry;  in do_last()  local
3046 		BUG_ON(nd->inode != dir->d_inode);  in do_last()
3058 		audit_inode(nd->name, dir, LOOKUP_PARENT);  in do_last()
3075 	mutex_lock(&dir->d_inode->i_mutex);  in do_last()
3077 	mutex_unlock(&dir->d_inode->i_mutex);  in do_last()
3223 	BUG_ON(save_parent.dentry != dir);  in do_last()
3226 	nd->inode = dir->d_inode;  in do_last()
3243 	struct inode *dir;  in do_tmpfile()  local
3251 	dir = path.dentry->d_inode;  in do_tmpfile()
3253 	error = inode_permission(dir, MAY_WRITE | MAY_EXEC);  in do_tmpfile()
3256 	if (!dir->i_op->tmpfile) {  in do_tmpfile()
3267 	error = dir->i_op->tmpfile(dir, child, op->mode);  in do_tmpfile()
3487 int vfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)  in vfs_mknod()  argument
3489 	int error = may_create(dir, dentry);  in vfs_mknod()
3497 	if (!dir->i_op->mknod)  in vfs_mknod()
3504 	error = security_inode_mknod(dir, dentry, mode, dev);  in vfs_mknod()
3508 	error = dir->i_op->mknod(dir, dentry, mode, dev);  in vfs_mknod()
3510 		fsnotify_create(dir, dentry);  in vfs_mknod()
3579 int vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)  in vfs_mkdir()  argument
3581 	int error = may_create(dir, dentry);  in vfs_mkdir()
3582 	unsigned max_links = dir->i_sb->s_max_links;  in vfs_mkdir()
3587 	if (!dir->i_op->mkdir)  in vfs_mkdir()
3591 	error = security_inode_mkdir(dir, dentry, mode);  in vfs_mkdir()
3595 	if (max_links && dir->i_nlink >= max_links)  in vfs_mkdir()
3598 	error = dir->i_op->mkdir(dir, dentry, mode);  in vfs_mkdir()
3600 		fsnotify_mkdir(dir, dentry);  in vfs_mkdir()
3660 int vfs_rmdir(struct inode *dir, struct dentry *dentry)  in vfs_rmdir()  argument
3662 	int error = may_delete(dir, dentry, 1);  in vfs_rmdir()
3667 	if (!dir->i_op->rmdir)  in vfs_rmdir()
3677 	error = security_inode_rmdir(dir, dentry);  in vfs_rmdir()
3682 	error = dir->i_op->rmdir(dir, dentry);  in vfs_rmdir()
3781 int vfs_unlink(struct inode *dir, struct dentry *dentry, struct inode **delegated_inode)  in vfs_unlink()  argument
3784 	int error = may_delete(dir, dentry, 0);  in vfs_unlink()
3789 	if (!dir->i_op->unlink)  in vfs_unlink()
3796 		error = security_inode_unlink(dir, dentry);  in vfs_unlink()
3801 			error = dir->i_op->unlink(dir, dentry);  in vfs_unlink()
3916 int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)  in vfs_symlink()  argument
3918 	int error = may_create(dir, dentry);  in vfs_symlink()
3923 	if (!dir->i_op->symlink)  in vfs_symlink()
3926 	error = security_inode_symlink(dir, dentry, oldname);  in vfs_symlink()
3930 	error = dir->i_op->symlink(dir, dentry, oldname);  in vfs_symlink()
3932 		fsnotify_create(dir, dentry);  in vfs_symlink()
3992 int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry, struct inode …  in vfs_link()  argument
3995 	unsigned max_links = dir->i_sb->s_max_links;  in vfs_link()
4001 	error = may_create(dir, new_dentry);  in vfs_link()
4005 	if (dir->i_sb != inode->i_sb)  in vfs_link()
4013 	if (!dir->i_op->link)  in vfs_link()
4018 	error = security_inode_link(old_dentry, dir, new_dentry);  in vfs_link()
4031 			error = dir->i_op->link(old_dentry, dir, new_dentry);  in vfs_link()
4041 		fsnotify_link(dir, inode, new_dentry);  in vfs_link()
4466 int vfs_whiteout(struct inode *dir, struct dentry *dentry)  in vfs_whiteout()  argument
4468 	int error = may_create(dir, dentry);  in vfs_whiteout()
4472 	if (!dir->i_op->mknod)  in vfs_whiteout()
4475 	return dir->i_op->mknod(dir, dentry,  in vfs_whiteout()