Exemple #1
0
static int au_procfs_plm_write_si(struct file *file, unsigned long id)
{
	int err;
	struct super_block *sb;
	struct au_sbinfo *sbinfo;

	err = -EBUSY;
	if (unlikely(file->private_data))
		goto out;

	sb = NULL;
	/* don't use au_sbilist_lock() here */
	spin_lock(&au_sbilist.spin);
	list_for_each_entry(sbinfo, &au_sbilist.head, si_list)
		if (id == sysaufs_si_id(sbinfo)) {
			kobject_get(&sbinfo->si_kobj);
			sb = sbinfo->si_sb;
			break;
		}
	spin_unlock(&au_sbilist.spin);

	err = -EINVAL;
	if (unlikely(!sb))
		goto out;

	err = au_plink_maint_enter(sb);
	if (!err)
		/* keep kobject_get() */
		file->private_data = sbinfo;
	else
		kobject_put(&sbinfo->si_kobj);
out:
	return err;
}
Exemple #2
0
static void sysrq_sb(struct super_block *sb)
{
	char *plevel;
	struct au_sbinfo *sbinfo;
	struct file *file;

	plevel = au_plevel;
	au_plevel = KERN_WARNING;
	au_debug(1);

	sbinfo = au_sbi(sb);
	pr_warning("si=%lx\n", sysaufs_si_id(sbinfo));
	pr_warning(AUFS_NAME ": superblock\n");
	au_dpri_sb(sb);
	pr_warning(AUFS_NAME ": root dentry\n");
	au_dpri_dentry(sb->s_root);
	pr_warning(AUFS_NAME ": root inode\n");
	au_dpri_inode(sb->s_root->d_inode);
#if 0
	struct inode *i;
	pr_warning(AUFS_NAME ": isolated inode\n");
	list_for_each_entry(i, &sb->s_inodes, i_sb_list)
		if (list_empty(&i->i_dentry))
			au_dpri_inode(i);
#endif
	pr_warning(AUFS_NAME ": files\n");
	list_for_each_entry(file, &sb->s_files, f_u.fu_list)
		if (!special_file(file->f_dentry->d_inode->i_mode))
			au_dpri_file(file);

	au_plevel = plevel;
	au_debug(0);
}
Exemple #3
0
int sysaufs_si_init(struct au_sbinfo *sbinfo)
{
	int err;

	sbinfo->si_kobj.kset = sysaufs_kset;
	/* cf. sysaufs_name() */
	err = kobject_init_and_add
		(&sbinfo->si_kobj, &au_sbi_ktype, /*&sysaufs_kset->kobj*/NULL,
		 SysaufsSiNamePrefix "%lx", sysaufs_si_id(sbinfo));

	dbgaufs_si_null(sbinfo);
	if (!err) {
		err = dbgaufs_si_init(sbinfo);
		if (unlikely(err))
			kobject_put(&sbinfo->si_kobj);
	}
	return err;
}