loff_t au_dir_size(struct file *file, struct dentry *dentry)
{
loff_t sz;
aufs_bindex_t bindex, bend;
struct file *h_file;
struct dentry *h_dentry;
sz = 0;
if (file) {
AuDebugOn(!file_inode(file));
AuDebugOn(!S_ISDIR(file_inode(file)->i_mode));
bend = au_fbend_dir(file);
for (bindex = au_fbstart(file);
bindex <= bend && sz < KMALLOC_MAX_SIZE;
bindex++) {
h_file = au_hf_dir(file, bindex);
if (h_file && file_inode(h_file))
sz += vfsub_f_size_read(h_file);
}
} else {
AuDebugOn(!dentry);
AuDebugOn(!dentry->d_inode);
AuDebugOn(!S_ISDIR(dentry->d_inode->i_mode));
bend = au_dbtaildir(dentry);
for (bindex = au_dbstart(dentry);
bindex <= bend && sz < KMALLOC_MAX_SIZE;
bindex++) {
h_dentry = au_h_dptr(dentry, bindex);
if (h_dentry && h_dentry->d_inode)
sz += i_size_read(h_dentry->d_inode);
}
}
if (sz < KMALLOC_MAX_SIZE)
sz = roundup_pow_of_two(sz);
if (sz > KMALLOC_MAX_SIZE)
sz = KMALLOC_MAX_SIZE;
else if (sz < NAME_MAX) {
BUILD_BUG_ON(AUFS_RDBLK_DEF < NAME_MAX);
sz = AUFS_RDBLK_DEF;
}
return sz;
}
loff_t au_dir_size(struct file *file, struct dentry *dentry)
{
loff_t sz;
aufs_bindex_t bindex, bbot;
struct file *h_file;
struct dentry *h_dentry;
sz = 0;
if (file) {
AuDebugOn(!d_is_dir(file->f_path.dentry));
bbot = au_fbbot_dir(file);
for (bindex = au_fbtop(file);
bindex <= bbot && sz < KMALLOC_MAX_SIZE;
bindex++) {
h_file = au_hf_dir(file, bindex);
if (h_file && file_inode(h_file))
sz += vfsub_f_size_read(h_file);
}
} else {
AuDebugOn(!dentry);
AuDebugOn(!d_is_dir(dentry));
bbot = au_dbtaildir(dentry);
for (bindex = au_dbtop(dentry);
bindex <= bbot && sz < KMALLOC_MAX_SIZE;
bindex++) {
h_dentry = au_h_dptr(dentry, bindex);
if (h_dentry && d_is_positive(h_dentry))
sz += i_size_read(d_inode(h_dentry));
}
}
if (sz < KMALLOC_MAX_SIZE)
sz = roundup_pow_of_two(sz);
if (sz > KMALLOC_MAX_SIZE)
sz = KMALLOC_MAX_SIZE;
else if (sz < NAME_MAX) {
BUILD_BUG_ON(AUFS_RDBLK_DEF < NAME_MAX);
sz = AUFS_RDBLK_DEF;
}
return sz;
}