mnt->mnt_pinned = 0;
spin_unlock(&vfsmount_lock);
acct_auto_close_mnt(mnt);
- security_sb_umount_close(mnt);
goto repeat;
}
}
retval = 0;
}
spin_unlock(&vfsmount_lock);
- if (retval)
- security_sb_umount_busy(mnt);
up_write(&namespace_sem);
release_mounts(&umount_list);
return retval;
{
struct path path;
int retval;
+ int lookup_flags = 0;
+
+ if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
+ return -EINVAL;
- retval = user_path(name, &path);
+ if (!(flags & UMOUNT_NOFOLLOW))
+ lookup_flags |= LOOKUP_FOLLOW;
+
+ retval = user_path_at(AT_FDCWD, name, lookup_flags, &path);
if (retval)
goto out;
retval = -EINVAL;
err = -ENOENT;
mutex_lock(&path->dentry->d_inode->i_mutex);
- if (IS_DEADDIR(path->dentry->d_inode))
+ if (cant_mount(path->dentry))
goto out_unlock;
- err = security_sb_check_sb(mnt, path);
- if (err)
- goto out_unlock;
-
- err = -ENOENT;
if (!d_unlinked(path->dentry))
err = attach_recursive_mnt(mnt, path, NULL);
out_unlock:
mutex_unlock(&path->dentry->d_inode->i_mutex);
- if (!err)
- security_sb_post_addmount(mnt, path);
return err;
}
}
up_write(&sb->s_umount);
if (!err) {
- security_sb_post_remount(path->mnt, flags, data);
-
spin_lock(&vfsmount_lock);
touch_mnt_namespace(path->mnt->mnt_ns);
spin_unlock(&vfsmount_lock);
err = -ENOENT;
mutex_lock(&path->dentry->d_inode->i_mutex);
- if (IS_DEADDIR(path->dentry->d_inode))
+ if (cant_mount(path->dentry))
goto out1;
if (d_unlinked(path->dentry))
{
int err;
- mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD);
+ mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL);
down_write(&namespace_sem);
/* Something was mounted here while we slept */
if (!check_mnt(root.mnt))
goto out2;
error = -ENOENT;
- if (IS_DEADDIR(new.dentry->d_inode))
+ if (cant_mount(old.dentry))
goto out2;
if (d_unlinked(new.dentry))
goto out2;
touch_mnt_namespace(current->nsproxy->mnt_ns);
spin_unlock(&vfsmount_lock);
chroot_fs_refs(&root, &new);
- security_sb_post_pivotroot(&root, &new);
error = 0;
path_put(&root_parent);
path_put(&parent_path);
void put_mnt_ns(struct mnt_namespace *ns)
{
- struct vfsmount *root;
LIST_HEAD(umount_list);
- if (!atomic_dec_and_lock(&ns->count, &vfsmount_lock))
+ if (!atomic_dec_and_test(&ns->count))
return;
- root = ns->root;
- ns->root = NULL;
- spin_unlock(&vfsmount_lock);
down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
- umount_tree(root, 0, &umount_list);
+ umount_tree(ns->root, 0, &umount_list);
spin_unlock(&vfsmount_lock);
up_write(&namespace_sem);
release_mounts(&umount_list);