int au_finfo_init(struct file *file)
{
struct au_finfo *finfo;
struct dentry *dentry;
unsigned long ul;
dentry = file->f_dentry;
finfo = au_cache_alloc_finfo();
if (unlikely(!finfo))
goto out;
finfo->fi_hfile = kcalloc(au_sbend(dentry->d_sb) + 1,
sizeof(*finfo->fi_hfile), GFP_NOFS);
if (unlikely(!finfo->fi_hfile))
goto out_finfo;
au_rw_init_wlock(&finfo->fi_rwsem);
finfo->fi_bstart = -1;
finfo->fi_bend = -1;
atomic_set(&finfo->fi_generation, au_digen(dentry));
/* smp_mb(); */ /* atomic_set */
/* cf. au_store_oflag() */
/* suppress a warning in lp64 */
ul = (unsigned long)file->private_data;
file->f_mode |= (vfsub_uint_to_fmode(ul) & FMODE_EXEC);
file->private_data = finfo;
return 0; /* success */
out_finfo:
au_cache_free_finfo(finfo);
out:
return -ENOMEM;
}
void au_finfo_fin(struct file *file)
{
struct au_finfo *finfo;
finfo = au_fi(file);
AuDebugOn(finfo->fi_hdir);
AuRwDestroy(&finfo->fi_rwsem);
au_cache_free_finfo(finfo);
}
void au_finfo_fin(struct file *file)
{
struct au_finfo *finfo;
au_nfiles_dec(file->f_dentry->d_sb);
finfo = au_fi(file);
AuDebugOn(finfo->fi_hdir);
AuRwDestroy(&finfo->fi_rwsem);
au_cache_free_finfo(finfo);
}
void au_finfo_fin(struct file *file)
{
struct au_finfo *finfo;
aufs_bindex_t bindex, bend;
fi_write_lock(file);
bend = au_fbend(file);
bindex = au_fbstart(file);
if (bindex >= 0)
/*
* calls fput() instead of filp_close(),
* since no dnotify or lock for the lower file.
*/
for (; bindex <= bend; bindex++)
au_set_h_fptr(file, bindex, NULL);
finfo = au_fi(file);
au_dbg_verify_hf(finfo);
kfree(finfo->fi_hfile);
fi_write_unlock(file);
AuRwDestroy(&finfo->fi_rwsem);
au_cache_free_finfo(finfo);
}
