diff options
Diffstat (limited to 'fs/f2fs/file.c')
| -rw-r--r-- | fs/f2fs/file.c | 41 |
1 files changed, 39 insertions, 2 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index a66970d..9eb0100 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -408,6 +408,12 @@ static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) { struct inode *inode = file_inode(file); + if (f2fs_encrypted_inode(inode)) { + int err = f2fs_get_encryption_info(inode); + if (err) + return 0; + } + /* we don't need to use inline_data strictly */ if (f2fs_has_inline_data(inode)) { int err = f2fs_convert_inline_inode(inode); @@ -420,6 +426,18 @@ static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) return 0; } +static int f2fs_file_open(struct inode *inode, struct file *filp) +{ + int ret = generic_file_open(inode, filp); + + if (!ret && f2fs_encrypted_inode(inode)) { + ret = f2fs_get_encryption_info(inode); + if (ret) + ret = -EACCES; + } + return ret; +} + int truncate_data_blocks_range(struct dnode_of_data *dn, int count) { int nr_free = 0, ofs = dn->ofs_in_node; @@ -627,6 +645,10 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) return err; if (attr->ia_valid & ATTR_SIZE) { + if (f2fs_encrypted_inode(inode) && + f2fs_get_encryption_info(inode)) + return -EACCES; + if (attr->ia_size != i_size_read(inode)) { truncate_setsize(inode, attr->ia_size); f2fs_truncate(inode); @@ -1061,6 +1083,9 @@ static long f2fs_fallocate(struct file *file, int mode, struct inode *inode = file_inode(file); long ret = 0; + if (f2fs_encrypted_inode(inode) && (mode & FALLOC_FL_COLLAPSE_RANGE)) + return -EOPNOTSUPP; + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE)) return -EOPNOTSUPP; @@ -1468,6 +1493,18 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) } } +static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) +{ + struct inode *inode = file_inode(iocb->ki_filp); + + if (f2fs_encrypted_inode(inode) && + !f2fs_has_encryption_key(inode) && + f2fs_get_encryption_info(inode)) + return -EACCES; + + return generic_file_write_iter(iocb, from); +} + #ifdef CONFIG_COMPAT long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { @@ -1488,8 +1525,8 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) const struct file_operations f2fs_file_operations = { .llseek = f2fs_llseek, .read_iter = generic_file_read_iter, - .write_iter = generic_file_write_iter, - .open = generic_file_open, + .write_iter = f2fs_file_write_iter, + .open = f2fs_file_open, .release = f2fs_release_file, .mmap = f2fs_file_mmap, .fsync = f2fs_sync_file, |
