1350 static struct dentry *lookup_dcache(struct qstr *name, struct dentry *dir,  in lookup_dcache()  argument
1357 	dentry = d_lookup(dir, name);  in lookup_dcache()
1375 		dentry = d_alloc(dir, name);  in lookup_dcache()
1390 static struct dentry *lookup_real(struct inode *dir, struct dentry *dentry,  in lookup_real()  argument
1396 	if (unlikely(IS_DEADDIR(dir))) {  in lookup_real()
1401 	old = dir->i_op->lookup(dir, dentry, flags);  in lookup_real()
2307 	struct dentry *dir = nd->path.dentry;  in mountpoint_last()  local
2327 	mutex_lock(&dir->d_inode->i_mutex);  in mountpoint_last()
2328 	dentry = d_lookup(dir, &nd->last);  in mountpoint_last()
2335 		dentry = d_alloc(dir, &nd->last);  in mountpoint_last()
2338 			mutex_unlock(&dir->d_inode->i_mutex);  in mountpoint_last()
2341 		dentry = lookup_real(dir->d_inode, dentry, nd->flags);  in mountpoint_last()
2344 			mutex_unlock(&dir->d_inode->i_mutex);  in mountpoint_last()
2348 	mutex_unlock(&dir->d_inode->i_mutex);  in mountpoint_last()
2455 int __check_sticky(struct inode *dir, struct inode *inode)  in __check_sticky()  argument
2461 	if (uid_eq(dir->i_uid, fsuid))  in __check_sticky()
2486 static int may_delete(struct inode *dir, struct dentry *victim, bool isdir)  in may_delete()  argument
2495 	BUG_ON(victim->d_parent->d_inode != dir);  in may_delete()
2496 	audit_inode_child(dir, victim, AUDIT_TYPE_CHILD_DELETE);  in may_delete()
2498 	error = inode_permission(dir, MAY_WRITE | MAY_EXEC);  in may_delete()
2501 	if (IS_APPEND(dir))  in may_delete()
2504 	if (check_sticky(dir, inode) || IS_APPEND(inode) ||  in may_delete()
2514 	if (IS_DEADDIR(dir))  in may_delete()
2529 static inline int may_create(struct inode *dir, struct dentry *child)  in may_create()  argument
2531 	audit_inode_child(dir, child, AUDIT_TYPE_CHILD_CREATE);  in may_create()
2534 	if (IS_DEADDIR(dir))  in may_create()
2536 	return inode_permission(dir, MAY_WRITE | MAY_EXEC);  in may_create()
2583 int vfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,  in vfs_create()  argument
2586 	int error = may_create(dir, dentry);  in vfs_create()
2590 	if (!dir->i_op->create)  in vfs_create()
2594 	error = security_inode_create(dir, dentry, mode);  in vfs_create()
2597 	error = dir->i_op->create(dir, dentry, mode, want_excl);  in vfs_create()
2599 		fsnotify_create(dir, dentry);  in vfs_create()
2685 static int may_o_create(struct path *dir, struct dentry *dentry, umode_t mode)  in may_o_create()  argument
2687 	int error = security_path_mknod(dir, dentry, mode, 0);  in may_o_create()
2691 	error = inode_permission(dir->dentry->d_inode, MAY_WRITE | MAY_EXEC);  in may_o_create()
2695 	return security_inode_create(dir->dentry->d_inode, dentry, mode);  in may_o_create()
2717 	struct inode *dir =  nd->path.dentry->d_inode;  in atomic_open()  local
2729 	if (unlikely(IS_DEADDIR(dir))) {  in atomic_open()
2735 	if ((open_flag & O_CREAT) && !IS_POSIXACL(dir))  in atomic_open()
2785 	error = dir->i_op->atomic_open(dir, dentry, file, open_flag, mode,  in atomic_open()
2803 			fsnotify_create(dir, dentry);  in atomic_open()
2826 		fsnotify_create(dir, dentry);  in atomic_open()
2839 		dentry = lookup_real(dir, dentry, nd->flags);  in atomic_open()
2876 	struct dentry *dir = nd->path.dentry;  in lookup_open()  local
2877 	struct inode *dir_inode = dir->d_inode;  in lookup_open()
2883 	dentry = lookup_dcache(&nd->last, dir, nd->flags, &need_lookup);  in lookup_open()
2907 		if (!IS_POSIXACL(dir->d_inode))  in lookup_open()
2924 		error = vfs_create(dir->d_inode, dentry, mode,  in lookup_open()
2946 	struct dentry *dir = nd->path.dentry;  in do_last()  local
2980 		BUG_ON(nd->inode != dir->d_inode);  in do_last()
2992 		audit_inode(name, dir, LOOKUP_PARENT);  in do_last()
3010 	mutex_lock(&dir->d_inode->i_mutex);  in do_last()
3012 	mutex_unlock(&dir->d_inode->i_mutex);  in do_last()
3166 	BUG_ON(save_parent.dentry != dir);  in do_last()
3169 	nd->inode = dir->d_inode;  in do_last()
3187 	struct inode *dir;  in do_tmpfile()  local
3200 	dir = dentry->d_inode;  in do_tmpfile()
3201 	if (!dir->i_op->tmpfile) {  in do_tmpfile()
3214 	error = dir->i_op->tmpfile(dir, nd->path.dentry, op->mode);  in do_tmpfile()
3453 int vfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)  in vfs_mknod()  argument
3455 	int error = may_create(dir, dentry);  in vfs_mknod()
3463 	if (!dir->i_op->mknod)  in vfs_mknod()
3470 	error = security_inode_mknod(dir, dentry, mode, dev);  in vfs_mknod()
3474 	error = dir->i_op->mknod(dir, dentry, mode, dev);  in vfs_mknod()
3476 		fsnotify_create(dir, dentry);  in vfs_mknod()
3545 int vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)  in vfs_mkdir()  argument
3547 	int error = may_create(dir, dentry);  in vfs_mkdir()
3548 	unsigned max_links = dir->i_sb->s_max_links;  in vfs_mkdir()
3553 	if (!dir->i_op->mkdir)  in vfs_mkdir()
3557 	error = security_inode_mkdir(dir, dentry, mode);  in vfs_mkdir()
3561 	if (max_links && dir->i_nlink >= max_links)  in vfs_mkdir()
3564 	error = dir->i_op->mkdir(dir, dentry, mode);  in vfs_mkdir()
3566 		fsnotify_mkdir(dir, dentry);  in vfs_mkdir()
3626 int vfs_rmdir(struct inode *dir, struct dentry *dentry)  in vfs_rmdir()  argument
3628 	int error = may_delete(dir, dentry, 1);  in vfs_rmdir()
3633 	if (!dir->i_op->rmdir)  in vfs_rmdir()
3643 	error = security_inode_rmdir(dir, dentry);  in vfs_rmdir()
3648 	error = dir->i_op->rmdir(dir, dentry);  in vfs_rmdir()
3745 int vfs_unlink(struct inode *dir, struct dentry *dentry, struct inode **delegated_inode)  in vfs_unlink()  argument
3748 	int error = may_delete(dir, dentry, 0);  in vfs_unlink()
3753 	if (!dir->i_op->unlink)  in vfs_unlink()
3760 		error = security_inode_unlink(dir, dentry);  in vfs_unlink()
3765 			error = dir->i_op->unlink(dir, dentry);  in vfs_unlink()
3878 int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)  in vfs_symlink()  argument
3880 	int error = may_create(dir, dentry);  in vfs_symlink()
3885 	if (!dir->i_op->symlink)  in vfs_symlink()
3888 	error = security_inode_symlink(dir, dentry, oldname);  in vfs_symlink()
3892 	error = dir->i_op->symlink(dir, dentry, oldname);  in vfs_symlink()
3894 		fsnotify_create(dir, dentry);  in vfs_symlink()
3954 int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry, struct inode …  in vfs_link()  argument
3957 	unsigned max_links = dir->i_sb->s_max_links;  in vfs_link()
3963 	error = may_create(dir, new_dentry);  in vfs_link()
3967 	if (dir->i_sb != inode->i_sb)  in vfs_link()
3975 	if (!dir->i_op->link)  in vfs_link()
3980 	error = security_inode_link(old_dentry, dir, new_dentry);  in vfs_link()
3993 			error = dir->i_op->link(old_dentry, dir, new_dentry);  in vfs_link()
4003 		fsnotify_link(dir, inode, new_dentry);  in vfs_link()
4425 int vfs_whiteout(struct inode *dir, struct dentry *dentry)  in vfs_whiteout()  argument
4427 	int error = may_create(dir, dentry);  in vfs_whiteout()
4431 	if (!dir->i_op->mknod)  in vfs_whiteout()
4434 	return dir->i_op->mknod(dir, dentry,  in vfs_whiteout()