/* || bindex > au_sbend(dentry->d_sb) */);
d = au_di(dentry)->di_hdentry[0 + bindex].hd_dentry;
AuDebugOn(d && (atomic_read(&d->d_count) <= 0));
return d;
}
aufs_bindex_t au_dbtail(struct dentry *dentry)
{
aufs_bindex_t bend, bwh;
bend = au_dbend(dentry);
if (0 <= bend) {
bwh = au_dbwh(dentry);
if (!bwh)
return bwh;
if (0 < bwh && bwh < bend)
return bwh - 1;
}
return bend;
}
aufs_bindex_t au_dbtaildir(struct dentry *dentry)
{
aufs_bindex_t bend, bopq;
AuDebugOn(dentry->d_inode
&& dentry->d_inode->i_mode
&& !S_ISDIR(dentry->d_inode->i_mode));
bend = au_dbtail(dentry);
if (0 <= bend) {
bopq = au_dbdiropq(dentry);
AuDebugOn(bend < bopq);
if (0 <= bopq && bopq < bend)
bend = bopq;
}
return bend;
}
#if 0 /* reserved for future use */
aufs_bindex_t au_dbtail_generic(struct dentry *dentry)
{
struct inode *inode;
inode = dentry->d_inode;
if (inode && S_ISDIR(inode->i_mode))
return au_dbtaildir(dentry);
else
return au_dbtail(dentry);
}
aufs_bindex_t au_dbtaildir(struct dentry *dentry)
{
aufs_bindex_t bend, bopq;
bend = au_dbtail(dentry);
if (0 <= bend) {
bopq = au_dbdiropq(dentry);
if (0 <= bopq && bopq < bend)
bend = bopq;
}
return bend;
}
aufs_bindex_t au_dbtaildir(struct dentry *dentry)
{
aufs_bindex_t bend, bopq;
AuDebugOn(dentry->d_inode
&& dentry->d_inode->i_mode
&& !S_ISDIR(dentry->d_inode->i_mode));
bend = au_dbtail(dentry);
if (0 <= bend) {
bopq = au_dbdiropq(dentry);
AuDebugOn(bend < bopq);
if (0 <= bopq && bopq < bend)
bend = bopq;
}
return bend;
}
static int set_inode(struct inode *inode, struct dentry *dentry)
{
int err;
unsigned int flags;
umode_t mode;
aufs_bindex_t bindex, bstart, btail;
unsigned char isdir;
struct dentry *h_dentry;
struct inode *h_inode;
struct au_iinfo *iinfo;
IiMustWriteLock(inode);
err = 0;
isdir = 0;
bstart = au_dbstart(dentry);
h_inode = au_h_dptr(dentry, bstart)->d_inode;
mode = h_inode->i_mode;
switch (mode & S_IFMT) {
case S_IFREG:
btail = au_dbtail(dentry);
inode->i_op = &aufs_iop;
inode->i_fop = &aufs_file_fop;
inode->i_mapping->a_ops = &aufs_aop;
break;
case S_IFDIR:
isdir = 1;
btail = au_dbtaildir(dentry);
inode->i_op = &aufs_dir_iop;
inode->i_fop = &aufs_dir_fop;
break;
case S_IFLNK:
btail = au_dbtail(dentry);
inode->i_op = &aufs_symlink_iop;
break;
case S_IFBLK:
case S_IFCHR:
case S_IFIFO:
case S_IFSOCK:
btail = au_dbtail(dentry);
inode->i_op = &aufs_iop;
au_init_special_fop(inode, mode, h_inode->i_rdev);
break;
default:
AuIOErr("Unknown file type 0%o\n", mode);
err = -EIO;
goto out;
}
/* do not set inotify for whiteouted dirs (SHWH mode) */
flags = au_hi_flags(inode, isdir);
if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)
&& au_ftest_hi(flags, HINOTIFY)
&& dentry->d_name.len > AUFS_WH_PFX_LEN
&& !memcmp(dentry->d_name.name, AUFS_WH_PFX, AUFS_WH_PFX_LEN))
au_fclr_hi(flags, HINOTIFY);
iinfo = au_ii(inode);
iinfo->ii_bstart = bstart;
iinfo->ii_bend = btail;
for (bindex = bstart; bindex <= btail; bindex++) {
h_dentry = au_h_dptr(dentry, bindex);
if (h_dentry)
au_set_h_iptr(inode, bindex,
au_igrab(h_dentry->d_inode), flags);
}
au_cpup_attr_all(inode, /*force*/1);
out:
return err;
}
