static ssize_t
ntfs_read(struct file * filp, char *buf, size_t count, loff_t *off)
{
int error;
ntfs_io io;
ntfs_inode *ino=NTFS_LINO2NINO(filp->f_dentry->d_inode);
/* inode is not properly initialized */
if(!ino)return -EINVAL;
ntfs_debug(DEBUG_OTHER, "ntfs_read %x,%x,%x ->",
(unsigned)ino->i_number,(unsigned)*off,(unsigned)count);
/* inode has no unnamed data attribute */
if(!ntfs_find_attr(ino,ino->vol->at_data,NULL))
return -EINVAL;
/* read the data */
io.fn_put=ntfs_putuser;
io.fn_get=0;
io.param=buf;
io.size=count;
error=ntfs_read_attr(ino,ino->vol->at_data,NULL,*off,&io);
if(error && !io.size)return -error;
*off+=io.size;
return io.size;
}
/* loff_t is 64 bit signed, so is cool. */
static ssize_t ntfs_read(struct file *filp, char *buf, size_t count,loff_t *off)
{
int error;
ntfs_io io;
ntfs_attribute *attr;
ntfs_inode *ino = NTFS_LINO2NINO(filp->f_dentry->d_inode);
/* Inode is not properly initialized. */
if (!ino)
return -EINVAL;
ntfs_debug(DEBUG_OTHER, "ntfs_read %x, %Lx, %x ->",
(unsigned)ino->i_number, (unsigned long long)*off,
(unsigned)count);
attr = ntfs_find_attr(ino, ino->vol->at_data, NULL);
/* Inode has no unnamed data attribute. */
if (!attr) {
ntfs_debug(DEBUG_OTHER, "ntfs_read: $DATA not found!\n");
return -EINVAL;
}
if (attr->flags & ATTR_IS_ENCRYPTED)
return -EACCES;
/* Read the data. */
io.fn_put = ntfs_putuser;
io.fn_get = 0;
io.param = buf;
io.size = count;
error = ntfs_read_attr(ino, ino->vol->at_data, NULL, *off, &io);
if (error && !io.size) {
ntfs_debug(DEBUG_OTHER, "ntfs_read: read_attr failed with "
"error %i, io size %u.\n", error, io.size);
return error;
}
*off += io.size;
ntfs_debug(DEBUG_OTHER, "ntfs_read: finished. read %u bytes.\n",
io.size);
return io.size;
}
