void au_cpup_attr_all(struct inode *inode, int force)
{
struct inode *h_inode;
h_inode = au_h_iptr(inode, au_ibstart(inode));
au_cpup_attr_changeable(inode);
if (inode->i_nlink > 0)
au_cpup_attr_nlink(inode, force);
inode->i_rdev = h_inode->i_rdev;
inode->i_blkbits = h_inode->i_blkbits;
au_cpup_igen(inode, h_inode);
}
void au_cpup_attr_all(struct inode *inode, int force)
{
struct inode *h_inode;
LKTRTrace("i%lu\n", inode->i_ino);
/* todo? IMustLock(inode); */
h_inode = au_h_iptr(inode, au_ibstart(inode));
AuDebugOn(!h_inode);
au_cpup_attr_changeable(inode);
if (inode->i_nlink > 0)
au_cpup_attr_nlink(inode, force);
switch (inode->i_mode & S_IFMT) {
case S_IFBLK:
case S_IFCHR:
inode->i_rdev = au_h_rdev(h_inode, /*h_mnt*/NULL,
/*h_dentry*/NULL);
}
inode->i_blkbits = h_inode->i_blkbits;
au_cpup_igen(inode, h_inode);
}
int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *uarg)
{
int err, e;
unsigned char dmsg;
struct au_mvd_args *args;
err = -EPERM;
if (unlikely(!capable(CAP_SYS_ADMIN)))
goto out;
err = -ENOMEM;
args = kmalloc(sizeof(*args), GFP_NOFS);
if (unlikely(!args))
goto out;
err = copy_from_user(&args->mvdown, uarg, sizeof(args->mvdown));
if (!err)
err = !access_ok(VERIFY_WRITE, uarg, sizeof(*uarg));
if (unlikely(err)) {
err = -EFAULT;
AuTraceErr(err);
goto out_free;
}
AuDbg("flags 0x%x\n", args->mvdown.flags);
args->mvdown.flags &= ~(AUFS_MVDOWN_ROLOWER_R | AUFS_MVDOWN_ROUPPER_R);
args->mvdown.au_errno = 0;
args->dentry = dentry;
args->inode = d_inode(dentry);
args->sb = dentry->d_sb;
err = -ENOENT;
dmsg = !!(args->mvdown.flags & AUFS_MVDOWN_DMSG);
args->parent = dget_parent(dentry);
args->dir = d_inode(args->parent);
mutex_lock_nested(&args->dir->i_mutex, I_MUTEX_PARENT);
dput(args->parent);
if (unlikely(args->parent != dentry->d_parent)) {
AU_MVD_PR(dmsg, "parent dir is moved\n");
goto out_dir;
}
mutex_lock_nested(&args->inode->i_mutex, I_MUTEX_CHILD);
err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH);
if (unlikely(err))
goto out_inode;
di_write_lock_parent(args->parent);
err = au_mvd_args(dmsg, args);
if (unlikely(err))
goto out_parent;
err = au_do_mvdown(dmsg, args);
if (unlikely(err))
goto out_parent;
au_cpup_attr_timesizes(args->dir);
au_cpup_attr_timesizes(args->inode);
au_cpup_igen(args->inode, au_h_iptr(args->inode, args->mvd_bdst));
/* au_digen_dec(dentry); */
out_parent:
di_write_unlock(args->parent);
aufs_read_unlock(dentry, AuLock_DW);
out_inode:
mutex_unlock(&args->inode->i_mutex);
out_dir:
mutex_unlock(&args->dir->i_mutex);
out_free:
e = copy_to_user(uarg, &args->mvdown, sizeof(args->mvdown));
if (unlikely(e))
err = -EFAULT;
kfree(args);
out:
AuTraceErr(err);
return err;
}
