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Commit 959c2de2 authored by Richard Weinberger's avatar Richard Weinberger
Browse files

ubifs: Enforce crypto policy in mmap 



We need this extra check in mmap because a process could
gain an already opened fd.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 700eada8

fs/ubifs/file.c

+9 −0
Original line number Diff line number Diff line
@@ -1594,6 +1594,15 @@ static const struct vm_operations_struct ubifs_file_vm_ops = { 
static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma)

{

	int err;

	struct inode *inode = file->f_mapping->host;



	if (ubifs_crypt_is_encrypted(inode)) {

		err = fscrypt_get_encryption_info(inode);

		if (err)

			return -EACCES;

		if (!fscrypt_has_encryption_key(inode))

			return -ENOKEY;

	}



	err = generic_file_mmap(file, vma);

	if (err)