/*
* Lookup the data. This is trivial - if the dentry didn't already
* exist, we know it is negative.
*/
static struct dentry * ptpfs_root_lookup(struct inode *dir, struct dentry *dentry)
{
// printk(KERN_INFO "%s\n", __FUNCTION__);
struct ptp_storage_ids storageids;
int x;
char fsname[256];
int typeCount[5];
memset(&storageids,0,sizeof(storageids)); //add by evan
memset(typeCount,0,sizeof(typeCount));
if (ptp_getstorageids(PTPFSSB(dir->i_sb), &storageids)!=PTP_RC_OK)
{
printk(KERN_INFO "Error getting storage ids\n");
storageids.n = 0;
storageids.storage = NULL;
}
int offset = 0;
for (x = 0; x < storageids.n; x++)
{
struct ptp_storage_info storageinfo;
if ((storageids.storage[x]&0x0000ffff)==0) continue;
memset(&storageinfo,0,sizeof(storageinfo));
if (ptp_getstorageinfo(PTPFSSB(dir->i_sb), storageids.storage[x],&storageinfo)!=PTP_RC_OK)
{
printk(KERN_INFO "Error getting storage info\n");
}
else
{
get_root_dir_name(&storageinfo,fsname,typeCount);
offset++;
if (!memcmp(fsname,dentry->d_name.name,dentry->d_name.len))
{
struct inode *newi = ptpfs_get_inode(dir->i_sb, S_IFDIR | S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH , 0,storageids.storage[x]);
PTPFSINO(newi)->parent = dir; //dir should be root directory
//newi->i_fop = &ptpfs_stgdir_operations;
//newi->i_op = &ptpfs_stgdir_inode_operations;
PTPFSINO(newi)->type = INO_TYPE_STGDIR;
PTPFSINO(newi)->storage = storageids.storage[x];
if (newi) d_add(dentry, newi);
ptp_free_storage_ids(&storageids);
ptp_free_storage_info(&storageinfo);
return NULL;
}
ptp_free_storage_info(&storageinfo);
}
}
ptp_free_storage_ids(&storageids);
return NULL;
}
static int ptpfs_release(struct inode *ino, struct file *filp)
{
//printk(KERN_INFO "%s object:%X dcount: %d\n", __FUNCTION__,ino->i_ino, filp->f_dentry->d_count);
struct ptp_data_buffer *data=(struct ptp_data_buffer*)filp->private_data;
if (data)
{
switch (filp->f_flags & O_ACCMODE)
{
case O_RDWR:
case O_WRONLY:
{
struct ptp_object_info object;
memset(&object,0,sizeof(object));
if (ptp_getobjectinfo(PTPFSSB(ino->i_sb),ino->i_ino,&object)!=PTP_RC_OK)
{
ptp_free_data_buffer(data);
kfree(data);
return -EPERM;
}
ptp_deleteobject(PTPFSSB(ino->i_sb),ino->i_ino,0);
int count = 0;
int x;
for (x = 0; x < data->num_blocks; x++)
{
count += data->blocks[x].block_size;
}
int storage = object.storage_id;
int parent = object.parent_object;
int handle = ino->i_ino;
object.object_compressed_size=count;
int ret = ptp_sendobjectinfo(PTPFSSB(ino->i_sb), &storage, &parent, &handle, &object);
ret = ptp_sendobject(PTPFSSB(ino->i_sb),data,count);
ino->i_size = count;
ino->i_mtime = CURRENT_TIME;
ptpfs_free_inode_data(ino);//uncache
ptpfs_free_inode_data(PTPFSINO(ino) -> parent);//uncache
//the inode number will change. Kill this inode so next dir lookup will create a new one
dput(filp->f_dentry);
//iput(ino);
}
break;
}
ptp_free_data_buffer(data);
kfree(data);
}
return 0;
}
int ptpfs_unlink(struct inode *dir,struct dentry *d)
{
//printk(KERN_INFO "%s %s\n",__FUNCTION__,d->d_name.name);
int x;
struct ptpfs_inode_data* ptpfs_data = PTPFSINO(dir);
if (!ptpfs_get_dir_data(dir))
{
return -EPERM;
}
if (ptpfs_data->type != INO_TYPE_DIR && ptpfs_data->type != INO_TYPE_STGDIR)
{
return -EPERM;
}
for (x = 0; x < ptpfs_data->data.dircache.num_files; x++)
{
if (!memcmp(ptpfs_data->data.dircache.file_info[x].filename,d->d_name.name,d->d_name.len))
{
int ret = ptp_deleteobject(PTPFSSB(dir->i_sb),ptpfs_data->data.dircache.file_info[x].handle,0);
if (ret == PTP_RC_OK)
{
ptpfs_free_inode_data(dir);//uncache
dir->i_version++;
return 0;
}
}
}
return -EPERM;
}
static int ptpfs_open(struct inode *ino, struct file *filp)
{
//printk(KERN_INFO "%s flags: %X\n", __FUNCTION__, filp->f_flags);
struct ptp_data_buffer *data=(struct ptp_data_buffer*)kmalloc(sizeof(struct ptp_data_buffer), GFP_KERNEL);
int retval;
memset(data,0,sizeof(struct ptp_data_buffer));
switch (filp->f_flags & O_ACCMODE)
{
case O_RDWR:
return -EFAULT;
case O_RDONLY:
retval = ptp_getobject(PTPFSSB(ino->i_sb),ino->i_ino,data);
if (retval == PTP_RC_OK)
{
filp->private_data = data;
return 0;
}
break;
case O_WRONLY:
filp->private_data = data;
return 0;
}
kfree(data);
return -EFAULT;
}
static struct dentry * ptpfs_lookup(struct inode *dir, struct dentry *dentry)
{
int x;
//printk(KERN_INFO "%s\n", __FUNCTION__);
struct ptpfs_inode_data* ptpfs_data = PTPFSINO(dir);
if (!ptpfs_get_dir_data(dir))
{
d_add(dentry, NULL);
return NULL;
}
if (ptpfs_data->type != INO_TYPE_DIR && ptpfs_data->type != INO_TYPE_STGDIR)
{
d_add(dentry, NULL);
return NULL;
}
for (x = 0; x < ptpfs_data->data.dircache.num_files; x++)
{
if (!memcmp(ptpfs_data->data.dircache.file_info[x].filename,dentry->d_name.name,dentry->d_name.len))
{
struct ptp_object_info object;
if (ptp_getobjectinfo(PTPFSSB(dir->i_sb),ptpfs_data->data.dircache.file_info[x].handle,&object)!=PTP_RC_OK)
{
d_add(dentry, NULL);
return NULL;
}
int mode = S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH;
if (object.object_format==PTP_OFC_Association && object.association_type == PTP_AT_GenericFolder)
{
mode |= S_IFDIR;
}
else
{
mode |= S_IFREG;
}
struct inode *newi = ptpfs_get_inode(dir->i_sb, mode , 0,ptpfs_data->data.dircache.file_info[x].handle);
PTPFSINO(newi)->parent = dir;
ptpfs_set_inode_info(newi,&object);
//atomic_inc(&newi->i_count); /* New dentry reference */
d_add(dentry, newi);
ptp_free_object_info(&object);
return NULL;
}
}
d_add(dentry, NULL);
return NULL;
}
static int ptpfs_mkdir(struct inode *ino,struct dentry *d,int i)
{
//printk(KERN_INFO "%s %s %d\n",__FUNCTION__,d->d_name.name,i);
__u32 storage;
__u32 parent;
__u32 handle;
struct ptp_object_info objectinfo;
memset(&objectinfo,0,sizeof(objectinfo));
storage = PTPFSINO(ino)->storage;
if (PTPFSINO(ino)->type == INO_TYPE_STGDIR)
{
parent = 0xffffffff;
}
else
{
parent = ino->i_ino;
}
objectinfo.filename = (unsigned char *)d->d_name.name;
objectinfo.object_format=PTP_OFC_Association;
objectinfo.association_type = PTP_AT_GenericFolder;
int ret = ptp_sendobjectinfo(PTPFSSB(ino->i_sb), &storage, &parent, &handle, &objectinfo);
/*
if (ret == PTP_RC_OK)
{
struct ptp_data_buffer data;
memset(&data,0,sizeof(data));
ret = ptp_sendobject(PTPFSSB(ino->i_sb),&data,0);
}
*/
objectinfo.filename = NULL;
ptp_free_object_info(&objectinfo);
if (ret == PTP_RC_OK)
{
ptpfs_free_inode_data(ino);//uncache
ino->i_version++;
return 0;
}
return -EPERM;
}
static int ptpfs_root_readdir(struct file *filp, void *dirent, filldir_t filldir)
{
// printk(KERN_INFO "%s\n", __FUNCTION__);
struct inode *inode = filp->f_dentry->d_inode;
struct dentry *dentry = filp->f_dentry;
struct ptp_storage_ids storageids;
int ino;
int x;
char fsname[256];
int typeCount[5];
memset(typeCount,0,sizeof(typeCount));
memset(&storageids,0,sizeof(storageids));
int offset = filp->f_pos;
if (offset)
{
return 1;
}
switch (offset)
{
case 0:
if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0)
return 0;
offset++;
filp->f_pos++;
// fall through
case 1:
spin_lock(&dcache_lock);
ino = dentry->d_parent->d_inode->i_ino;
spin_unlock(&dcache_lock);
if (filldir(dirent, "..", 2, offset, ino, DT_DIR) < 0)
break;
filp->f_pos++;
offset++;
default:
if (ptp_getstorageids(PTPFSSB(inode->i_sb), &storageids)!=PTP_RC_OK)
{
printk(KERN_INFO "Error getting storage ids\n");
storageids.n = 0;
storageids.storage = NULL;
}
for (x = 0; x < storageids.n; x++)
{
struct ptp_storage_info storageinfo;
if ((storageids.storage[x]&0x0000ffff)==0) continue;
memset(&storageinfo,0,sizeof(storageinfo));
if (ptp_getstorageinfo(PTPFSSB(inode->i_sb), storageids.storage[x],&storageinfo)!=PTP_RC_OK)
{
printk(KERN_INFO "Error getting storage info\n");
}
else
{
get_root_dir_name(&storageinfo, fsname, typeCount) ;
ino = storageids.storage[x];
ptp_free_storage_info(&storageinfo);
if (filldir(dirent, fsname, strlen(fsname), filp->f_pos, ino ,DT_DIR) < 0)
{
ptp_free_storage_ids(&storageids);
return 0;
}
filp->f_pos++;
}
}
ptp_free_storage_ids(&storageids);
return 1;
}
return 0;
}
static int ptpfs_create(struct inode *dir,struct dentry *d,int i)
{
//printk(KERN_INFO "%s %s %d\n",__FUNCTION__,d->d_name.name,i);
__u32 storage;
__u32 parent;
__u32 handle;
struct ptp_object_info objectinfo;
memset(&objectinfo,0,sizeof(objectinfo));
storage = PTPFSINO(dir)->storage;
if (PTPFSINO(dir)->type == INO_TYPE_STGDIR)
{
parent = 0xffffffff;
}
else
{
parent = dir->i_ino;
}
objectinfo.filename = (unsigned char *)d->d_name.name;
objectinfo.object_format=get_format((unsigned char *)d->d_name.name,d->d_name.len);
objectinfo.object_compressed_size=0;
int ret = ptp_sendobjectinfo(PTPFSSB(dir->i_sb), &storage, &parent, &handle, &objectinfo);
if (ret == PTP_RC_OK)
{
struct ptp_data_buffer data;
struct ptp_block block;
unsigned char buf[10];
memset(&data,0,sizeof(data));
memset(&block,0,sizeof(block));
data.blocks=█
data.num_blocks = 1;
block.block_size = 0;
block.block = buf;
ret = ptp_sendobject(PTPFSSB(dir->i_sb),&data,0);
if (handle == 0)
{
//problem - it didn't return the right handle - need to do something find it
struct ptp_object_handles objects;
objects.n = 0;
objects.handles = NULL;
ptpfs_get_dir_data(dir);
if (PTPFSINO(dir)->type == INO_TYPE_DIR)
{
ptp_getobjecthandles(PTPFSSB(dir->i_sb), PTPFSINO(dir)->storage, 0x000000, dir->i_ino,&objects);
}
else
{
ptp_getobjecthandles(PTPFSSB(dir->i_sb), dir->i_ino, 0x000000, 0xffffffff ,&objects);
}
int x,y;
for (x = 0; x < objects.n && !handle; x++ )
{
for (y = 0; y < PTPFSINO(dir)->data.dircache.num_files; y++)
{
if (PTPFSINO(dir)->data.dircache.file_info[y].handle == objects.handles[x])
{
objects.handles[x] = 0;
y = PTPFSINO(dir)->data.dircache.num_files;
}
}
if (objects.handles[x])
{
handle = objects.handles[x];
}
}
ptp_free_object_handles(&objects);
}
int mode = S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH | S_IFREG;
struct inode *newi = ptpfs_get_inode(dir->i_sb, mode , 0,handle);
PTPFSINO(newi)->parent = dir;
ptpfs_set_inode_info(newi,&objectinfo);
atomic_inc(&newi->i_count); /* New dentry reference */
d_instantiate(d, newi);
objectinfo.filename = NULL;
ptp_free_object_info(&objectinfo);
ptpfs_free_inode_data(dir);//uncache
dir->i_version++;
newi->i_mtime = CURRENT_TIME;
return 0;
}
objectinfo.filename = NULL;
ptp_free_object_info(&objectinfo);
return -EPERM;
}
static int ptpfs_get_dir_data(struct inode *inode)
{
int x;
struct ptpfs_inode_data* ptpfs_data = PTPFSINO(inode);
if (ptpfs_data->data.dircache.file_info == NULL)
{
struct ptp_object_handles objects;
objects.n = 0;
objects.handles = NULL;
ptpfs_free_inode_data(inode);
ptpfs_data->data.dircache.num_files = 0;
ptpfs_data->data.dircache.file_info = NULL;
if (ptpfs_data->type == INO_TYPE_DIR)
{
if (ptp_getobjecthandles(PTPFSSB(inode->i_sb), ptpfs_data->storage, 0x000000, inode->i_ino,&objects) != PTP_RC_OK)
{
return 0;
}
}
else
{
if (ptp_getobjecthandles(PTPFSSB(inode->i_sb), inode->i_ino, 0x000000, 0xffffffff ,&objects) != PTP_RC_OK)
{
return 0;
}
}
int size = objects.n*sizeof(struct ptpfs_dirinode_fileinfo);
struct ptpfs_dirinode_fileinfo* finfo = (struct ptpfs_dirinode_fileinfo*)kmalloc(size, GFP_KERNEL);
ptpfs_data->data.dircache.file_info = finfo;
if (finfo == NULL)
{
return 0;
}
memset(ptpfs_data->data.dircache.file_info,0,size);
for (x = 0; x < objects.n; x++)
{
struct ptp_object_info object;
memset(&object,0,sizeof(object));
if (ptp_getobjectinfo(PTPFSSB(inode->i_sb),objects.handles[x],&object)!=PTP_RC_OK)
{
ptpfs_free_inode_data(inode);
ptp_free_object_handles(&objects);
return 0;
}
if (ptpfs_data->type == INO_TYPE_STGDIR &&
(object.storage_id != inode->i_ino || object.parent_object != 0))
{
continue;
}
int mode = DT_REG;
if (object.object_format==PTP_OFC_Association && object.association_type == PTP_AT_GenericFolder)
mode = DT_DIR;
finfo[ptpfs_data->data.dircache.num_files].filename = object.filename;
finfo[ptpfs_data->data.dircache.num_files].handle = objects.handles[x];
finfo[ptpfs_data->data.dircache.num_files].mode = mode;
ptpfs_data->data.dircache.num_files++;
object.filename = NULL;
ptp_free_object_info(&object);
}
ptp_free_object_handles(&objects);
}
return 1;
}