Exemplos de set_sensitive_mapping_pages em C++ (Cpp)

Exemplo n.º 1

Arquivo: ecryptfs_dek.c Projeto: Fevax/kernel_samsung_exynos5422

static int ecryptfs_update_crypt_flag(struct dentry *dentry, int is_sensitive)
{
	int rc = 0;
	struct inode *inode;
	struct inode *lower_inode;
	struct ecryptfs_crypt_stat *crypt_stat;
	u32 tmp_flags;

	crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
	if (!(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED))
		ecryptfs_init_crypt_stat(crypt_stat);
	inode = dentry->d_inode;
	lower_inode = ecryptfs_inode_to_lower(inode);

	mutex_lock(&crypt_stat->cs_mutex);
	rc = ecryptfs_get_lower_file(dentry, inode);
	if (rc) {
		mutex_unlock(&crypt_stat->cs_mutex);
		DEK_LOGE("ecryptfs_get_lower_file rc=%d\n", rc);
		goto out;
	}

	tmp_flags = crypt_stat->flags;
	if (is_sensitive) {
		crypt_stat->flags |= ECRYPTFS_DEK_IS_SENSITIVE;
		/*
		* Set sensirive for all the pages in the inode 
		*/
		set_sensitive_mapping_pages(inode->i_mapping, 0, -1);
	}
	else{
		crypt_stat->flags &= ~ECRYPTFS_DEK_IS_SENSITIVE;
	}

	rc = ecryptfs_write_metadata(dentry, inode);
	if (rc) {
		crypt_stat->flags = tmp_flags;
		mutex_unlock(&crypt_stat->cs_mutex);
		DEK_LOGE("ecryptfs_write_metadata rc=%d\n", rc);
		goto out;
	}

	rc = ecryptfs_write_inode_size_to_metadata(inode);
	if (rc) {
		mutex_unlock(&crypt_stat->cs_mutex);
		DEK_LOGE("Problem with "
				"ecryptfs_write_inode_size_to_metadata; "
				"rc = [%d]\n", rc);
		goto out;
	}

	ecryptfs_put_lower_file(inode);
	mutex_unlock(&crypt_stat->cs_mutex);
out:
	fsstack_copy_attr_all(inode, lower_inode);
	return rc;
}

Exemplo n.º 2

Arquivo: ecryptfs_dek.c Projeto: StarKissed/Note-4-AEL-Kernel

static int ecryptfs_update_crypt_flag(struct dentry *dentry, int is_sensitive)
{
	int rc = 0;
	struct dentry *lower_dentry;
	struct inode *inode;
	struct inode *lower_inode;
	struct ecryptfs_crypt_stat *crypt_stat;
	struct ecryptfs_mount_crypt_stat *mount_crypt_stat;

	crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
	if (!(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED))
		ecryptfs_init_crypt_stat(crypt_stat);
	inode = dentry->d_inode;
	lower_inode = ecryptfs_inode_to_lower(inode);
	lower_dentry = ecryptfs_dentry_to_lower(dentry);

	mutex_lock(&crypt_stat->cs_mutex);

	mount_crypt_stat = &ecryptfs_superblock_to_private(
			dentry->d_sb)->mount_crypt_stat;
	rc = ecryptfs_get_lower_file(dentry, inode);
	if (rc) {
		mutex_unlock(&crypt_stat->cs_mutex);
		DEK_LOGE("ecryptfs_get_lower_file rc=%d\n", rc);
		goto out;
	}

	if (is_sensitive) {
		crypt_stat->flags |= ECRYPTFS_DEK_IS_SENSITIVE;
		/*
		* Set sensirive for all the pages in the inode 
		*/
		set_sensitive_mapping_pages(inode->i_mapping, 0, -1);
	}
	else{
		crypt_stat->flags &= ~ECRYPTFS_DEK_IS_SENSITIVE;
	}

	rc = ecryptfs_write_metadata(dentry, inode);
	if (rc) {
		if (!(mount_crypt_stat->flags
				& ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)) {
			rc = -EIO;
			DEK_LOGE("Either the lower file "
					"is not in a valid eCryptfs format, "
					"or the key could not be retrieved. "
					"Plaintext passthrough mode is not "
					"enabled; returning -EIO\n");
			mutex_unlock(&crypt_stat->cs_mutex);
			DEK_LOGD("ecryptfs_write_metadata rc=%d\n", rc);
			goto out;
		}
		rc = 0;
		crypt_stat->flags &= ~(ECRYPTFS_I_SIZE_INITIALIZED
				| ECRYPTFS_ENCRYPTED);
	}

	rc = ecryptfs_write_inode_size_to_metadata(inode);
	if (rc) {
		mutex_unlock(&crypt_stat->cs_mutex);
		DEK_LOGE("Problem with "
				"ecryptfs_write_inode_size_to_metadata; "
				"rc = [%d]\n", rc);
		goto out;
	}

	ecryptfs_put_lower_file(inode);

	mutex_unlock(&crypt_stat->cs_mutex);

out:
	fsstack_copy_attr_all(inode, lower_inode);
	return rc;
}