int au_finfo_init(struct file *file, struct au_fidir *fidir)
{
int err, lc_idx;
struct au_finfo *finfo;
struct dentry *dentry;
err = -ENOMEM;
dentry = file->f_dentry;
finfo = au_cache_alloc_finfo();
if (unlikely(!finfo))
goto out;
err = 0;
au_nfiles_inc(dentry->d_sb);
lc_idx = AuLcNonDir_FIINFO;
if (fidir)
lc_idx = AuLcDir_FIINFO;
au_rw_class(&finfo->fi_rwsem, au_lc_key + lc_idx);
au_rw_write_lock(&finfo->fi_rwsem);
finfo->fi_btop = -1;
finfo->fi_hdir = fidir;
atomic_set(&finfo->fi_generation, au_digen(dentry));
/* smp_mb(); */ /* atomic_set */
file->private_data = finfo;
out:
return err;
}
/*
* they are necessary regardless sysfs is disabled.
*/
void au_si_free(struct kobject *kobj)
{
struct au_sbinfo *sbinfo;
char *locked __maybe_unused; /* debug only */
sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
AuDebugOn(!list_empty(&sbinfo->si_plink.head));
AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len));
au_rw_write_lock(&sbinfo->si_rwsem);
au_br_free(sbinfo);
au_rw_write_unlock(&sbinfo->si_rwsem);
AuDebugOn(radix_tree_gang_lookup
(&sbinfo->au_si_pid.tree, (void **)&locked,
/*first_index*/PID_MAX_DEFAULT - 1,
/*max_items*/sizeof(locked)/sizeof(*locked)));
kfree(sbinfo->si_branch);
kfree(sbinfo->au_si_pid.bitmap);
mutex_destroy(&sbinfo->si_xib_mtx);
AuRwDestroy(&sbinfo->si_rwsem);
kfree(sbinfo);
}
int au_finfo_init(struct file *file, struct au_fidir *fidir)
{
int err;
unsigned long ul;
struct au_finfo *finfo;
struct dentry *dentry;
err = -ENOMEM;
dentry = file->f_dentry;
finfo = au_cache_alloc_finfo();
if (unlikely(!finfo))
goto out;
err = 0;
au_rw_write_lock(&finfo->fi_rwsem);
finfo->fi_btop = -1;
finfo->fi_hdir = fidir;
atomic_set(&finfo->fi_generation, au_digen(dentry));
/* smp_mb(); */ /* atomic_set */
/* cf. au_store_oflag() */
ul = (unsigned long)file->private_data;
file->f_mode |= (ul & FMODE_EXEC);
file->private_data = finfo;
out:
return err;
}
