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;
}
static int
_linux_ntfs_mkdir(struct inode *dir, struct dentry* d, int mode)
{
int error;
struct inode *r = 0;
ntfs_volume *vol;
ntfs_inode *ino;
ntfs_attribute *si;
ntfs_debug (DEBUG_DIR1, "mkdir %s in %x\n",d->d_name.name, dir->i_ino);
error = ENAMETOOLONG;
if (d->d_name.len > /* FIXME */255)
goto out;
error = EIO;
r = get_empty_inode();
if (!r)
goto out;
vol = NTFS_INO2VOL(dir);
#ifdef NTFS_IN_LINUX_KERNEL
ino = NTFS_LINO2NINO(r);
#else
ino = ntfs_malloc(sizeof(ntfs_inode));
error = ENOMEM;
if(!ino)
goto out;
r->u.generic_ip = ino;
#endif
error = ntfs_mkdir(NTFS_LINO2NINO(dir),
d->d_name.name, d->d_name.len, ino);
if(error)
goto out;
r->i_uid = vol->uid;
r->i_gid = vol->gid;
r->i_nlink = 1;
r->i_sb = dir->i_sb;
si = ntfs_find_attr(ino,vol->at_standard_information,NULL);
if(si){
char *attr = si->d.data;
r->i_atime = ntfs_ntutc2unixutc(NTFS_GETU64(attr+0x18));
r->i_ctime = ntfs_ntutc2unixutc(NTFS_GETU64(attr));
r->i_mtime = ntfs_ntutc2unixutc(NTFS_GETU64(attr+8));
}
/* It's a directory */
r->i_op = &ntfs_dir_inode_operations;
r->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
#ifdef CONFIG_NTFS_RW
r->i_mode|=S_IWUGO;
#endif
r->i_mode &= ~vol->umask;
insert_inode_hash(r);
d_instantiate(d, r);
error = 0;
out:
ntfs_debug (DEBUG_DIR1, "mkdir returns %d\n", -error);
return -error;
}
static int ntfs_create(struct inode* dir, struct dentry *d, int mode)
{
struct inode *r = 0;
ntfs_inode *ino = 0;
ntfs_volume *vol;
int error = 0;
ntfs_attribute *si;
r = new_inode(dir->i_sb);
if (!r) {
error = -ENOMEM;
goto fail;
}
ntfs_debug(DEBUG_OTHER, "ntfs_create %s\n", d->d_name.name);
vol = NTFS_INO2VOL(dir);
ino = NTFS_LINO2NINO(r);
error = ntfs_alloc_file(NTFS_LINO2NINO(dir), ino, (char*)d->d_name.name,
d->d_name.len);
if (error) {
ntfs_error("ntfs_alloc_file FAILED: error = %i", error);
goto fail;
}
/* Not doing this one was causing a huge amount of corruption! Now the
* bugger bytes the dust! (-8 (AIA) */
r->i_ino = ino->i_number;
error = ntfs_update_inode(ino);
if (error)
goto fail;
error = ntfs_update_inode(NTFS_LINO2NINO(dir));
if (error)
goto fail;
r->i_uid = vol->uid;
r->i_gid = vol->gid;
/* FIXME: dirty? dev? */
/* Get the file modification times from the standard information. */
si = ntfs_find_attr(ino, vol->at_standard_information, NULL);
if (si) {
char *attr = si->d.data;
r->i_atime = ntfs_ntutc2unixutc(NTFS_GETU64(attr + 0x18));
r->i_ctime = ntfs_ntutc2unixutc(NTFS_GETU64(attr));
r->i_mtime = ntfs_ntutc2unixutc(NTFS_GETU64(attr + 8));
}
/* It's not a directory */
r->i_op = &ntfs_inode_operations;
r->i_fop = &ntfs_file_operations;
r->i_mode = S_IFREG | S_IRUGO;
#ifdef CONFIG_NTFS_RW
r->i_mode |= S_IWUGO;
#endif
r->i_mode &= ~vol->umask;
insert_inode_hash(r);
d_instantiate(d, r);
return 0;
fail:
if (r)
iput(r);
return error;
}
static int _linux_ntfs_mkdir(struct inode *dir, struct dentry* d, int mode)
{
int error;
struct inode *r = 0;
ntfs_volume *vol;
ntfs_inode *ino;
ntfs_attribute *si;
ntfs_debug (DEBUG_DIR1, "mkdir %s in %x\n", d->d_name.name, dir->i_ino);
error = -ENAMETOOLONG;
if (d->d_name.len > /* FIXME: */ 255)
goto out;
error = -EIO;
r = new_inode(dir->i_sb);
if (!r)
goto out;
vol = NTFS_INO2VOL(dir);
ino = NTFS_LINO2NINO(r);
error = ntfs_mkdir(NTFS_LINO2NINO(dir), d->d_name.name, d->d_name.len,
ino);
if (error)
goto out;
/* Not doing this one was causing a huge amount of corruption! Now the
* bugger bytes the dust! (-8 (AIA) */
r->i_ino = ino->i_number;
r->i_uid = vol->uid;
r->i_gid = vol->gid;
si = ntfs_find_attr(ino, vol->at_standard_information, NULL);
if (si) {
char *attr = si->d.data;
r->i_atime = ntfs_ntutc2unixutc(NTFS_GETU64(attr + 0x18));
r->i_ctime = ntfs_ntutc2unixutc(NTFS_GETU64(attr));
r->i_mtime = ntfs_ntutc2unixutc(NTFS_GETU64(attr + 8));
}
/* It's a directory. */
r->i_op = &ntfs_dir_inode_operations;
r->i_fop = &ntfs_dir_operations;
r->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
#ifdef CONFIG_NTFS_RW
r->i_mode |= S_IWUGO;
#endif
r->i_mode &= ~vol->umask;
insert_inode_hash(r);
d_instantiate(d, r);
error = 0;
out:
ntfs_debug (DEBUG_DIR1, "mkdir returns %d\n", error);
return error;
}
static ssize_t ntfs_write(struct file *filp, const char *buf, size_t count,
loff_t *pos)
{
int err;
struct inode *vfs_ino = filp->f_dentry->d_inode;
ntfs_inode *ntfs_ino = NTFS_LINO2NINO(vfs_ino);
ntfs_attribute *data;
ntfs_io io;
struct ntfs_getuser_update_vm_s param;
if (!ntfs_ino)
return -EINVAL;
ntfs_debug(DEBUG_LINUX, __FUNCTION__ "(): Entering for inode 0x%lx, "
"*pos 0x%Lx, count 0x%x.\n", ntfs_ino->i_number, *pos,
count);
/* Allows to lock fs ro at any time. */
if (vfs_ino->i_sb->s_flags & MS_RDONLY)
return -EROFS;
data = ntfs_find_attr(ntfs_ino, ntfs_ino->vol->at_data, NULL);
if (!data)
return -EINVAL;
/* Evaluating O_APPEND is the file system's job... */
if (filp->f_flags & O_APPEND)
*pos = vfs_ino->i_size;
if (!data->resident && *pos + count > data->allocated) {
err = ntfs_extend_attr(ntfs_ino, data, *pos + count);
if (err < 0)
return err;
}
param.user = buf;
param.ino = vfs_ino;
param.off = *pos;
io.fn_put = 0;
io.fn_get = ntfs_getuser_update_vm;
io.param = ¶m;
io.size = count;
io.do_read = 0;
err = ntfs_readwrite_attr(ntfs_ino, data, *pos, &io);
ntfs_debug(DEBUG_LINUX, __FUNCTION__ "(): Returning %i\n", -err);
if (!err) {
*pos += io.size;
if (*pos > vfs_ino->i_size)
vfs_ino->i_size = *pos;
mark_inode_dirty(vfs_ino);
return io.size;
}
return err;
}
static ssize_t
ntfs_write(struct file *filp,const char* buf,size_t count,loff_t *pos)
{
int ret;
ntfs_io io;
struct inode *inode = filp->f_dentry->d_inode;
ntfs_inode *ino = NTFS_LINO2NINO(inode);
struct ntfs_getuser_update_vm_s param;
if (!ino)
return -EINVAL;
ntfs_debug (DEBUG_LINUX, "ntfs_write %x,%x,%x ->\n",
(unsigned)ino->i_number, (unsigned)*pos, (unsigned)count);
/* Allows to lock fs ro at any time */
if (inode->i_sb->s_flags & MS_RDONLY)
return -ENOSPC;
if (!ntfs_find_attr(ino,ino->vol->at_data,NULL))
return -EINVAL;
/* Evaluating O_APPEND is the file system's job... */
if (filp->f_flags & O_APPEND)
*pos = inode->i_size;
param.user = buf;
param.ino = inode;
param.off = *pos;
io.fn_put = 0;
io.fn_get = ntfs_getuser_update_vm;
io.param = ¶m;
io.size = count;
ret = ntfs_write_attr (ino, ino->vol->at_data, NULL, *pos, &io);
ntfs_debug (DEBUG_LINUX, "write -> %x\n", ret);
if(ret<0)
return -EINVAL;
*pos += io.size;
if (*pos > inode->i_size)
inode->i_size = *pos;
mark_inode_dirty (filp->f_dentry->d_inode);
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;
}
/* ntfs_read_inode() is called by the Virtual File System (the kernel layer
* that deals with filesystems) when iget is called requesting an inode not
* already present in the inode table. Typically filesystems have separate
* inode_operations for directories, files and symlinks. */
static void ntfs_read_inode(struct inode* inode)
{
ntfs_volume *vol;
ntfs_inode *ino;
ntfs_attribute *data;
ntfs_attribute *si;
vol = NTFS_INO2VOL(inode);
inode->i_mode = 0;
ntfs_debug(DEBUG_OTHER, "ntfs_read_inode 0x%lx\n", inode->i_ino);
switch (inode->i_ino) {
/* Those are loaded special files. */
case FILE_Mft:
if (!vol->mft_ino || ((vol->ino_flags & 1) == 0))
goto sys_file_error;
ntfs_memcpy(&inode->u.ntfs_i, vol->mft_ino, sizeof(ntfs_inode));
ino = vol->mft_ino;
vol->mft_ino = &inode->u.ntfs_i;
vol->ino_flags &= ~1;
ntfs_free(ino);
ino = vol->mft_ino;
ntfs_debug(DEBUG_OTHER, "Opening $MFT!\n");
break;
case FILE_MftMirr:
if (!vol->mftmirr || ((vol->ino_flags & 2) == 0))
goto sys_file_error;
ntfs_memcpy(&inode->u.ntfs_i, vol->mftmirr, sizeof(ntfs_inode));
ino = vol->mftmirr;
vol->mftmirr = &inode->u.ntfs_i;
vol->ino_flags &= ~2;
ntfs_free(ino);
ino = vol->mftmirr;
ntfs_debug(DEBUG_OTHER, "Opening $MFTMirr!\n");
break;
case FILE_BitMap:
if (!vol->bitmap || ((vol->ino_flags & 4) == 0))
goto sys_file_error;
ntfs_memcpy(&inode->u.ntfs_i, vol->bitmap, sizeof(ntfs_inode));
ino = vol->bitmap;
vol->bitmap = &inode->u.ntfs_i;
vol->ino_flags &= ~4;
ntfs_free(ino);
ino = vol->bitmap;
ntfs_debug(DEBUG_OTHER, "Opening $Bitmap!\n");
break;
case FILE_LogFile ... FILE_AttrDef:
/* No need to log root directory accesses. */
case FILE_Boot ... FILE_UpCase:
ntfs_debug(DEBUG_OTHER, "Opening system file %i!\n",
inode->i_ino);
default:
ino = &inode->u.ntfs_i;
if (!ino || ntfs_init_inode(ino, NTFS_INO2VOL(inode),
inode->i_ino))
{
ntfs_debug(DEBUG_OTHER, "NTFS: Error loading inode "
"0x%x\n", (unsigned int)inode->i_ino);
return;
}
}
/* Set uid/gid from mount options */
inode->i_uid = vol->uid;
inode->i_gid = vol->gid;
inode->i_nlink = 1;
/* Use the size of the data attribute as file size */
data = ntfs_find_attr(ino, vol->at_data, NULL);
if (!data)
inode->i_size = 0;
else
inode->i_size = data->size;
/* Get the file modification times from the standard information. */
si = ntfs_find_attr(ino, vol->at_standard_information, NULL);
if (si) {
char *attr = si->d.data;
inode->i_atime = ntfs_ntutc2unixutc(NTFS_GETU64(attr + 0x18));
inode->i_ctime = ntfs_ntutc2unixutc(NTFS_GETU64(attr));
inode->i_mtime = ntfs_ntutc2unixutc(NTFS_GETU64(attr + 8));
}
/* If it has an index root, it's a directory. */
if (ntfs_find_attr(ino, vol->at_index_root, "$I30")) {
ntfs_attribute *at;
at = ntfs_find_attr(ino, vol->at_index_allocation, "$I30");
inode->i_size = at ? at->size : 0;
inode->i_op = &ntfs_dir_inode_operations;
inode->i_fop = &ntfs_dir_operations;
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
} else {
inode->i_op = &ntfs_inode_operations;
inode->i_fop = &ntfs_file_operations;
inode->i_mode = S_IFREG | S_IRUGO;
}
#ifdef CONFIG_NTFS_RW
if (!data || !(data->flags & (ATTR_IS_COMPRESSED | ATTR_IS_ENCRYPTED)))
inode->i_mode |= S_IWUGO;
#endif
inode->i_mode &= ~vol->umask;
return;
sys_file_error:
ntfs_error("Critical error. Tried to call ntfs_read_inode() before we "
"have completed read_super() or VFS error.\n");
// FIXME: Should we panic() at this stage?
}
/* ntfs_read_inode is called by the Virtual File System (the kernel layer that
* deals with filesystems) when iget is called requesting an inode not already
* present in the inode table. Typically filesystems have separate
* inode_operations for directories, files and symlinks.
*/
static void ntfs_read_inode(struct inode* inode)
{
ntfs_volume *vol;
int can_mmap=0;
ntfs_inode *ino;
ntfs_attribute *data;
ntfs_attribute *si;
vol=NTFS_INO2VOL(inode);
inode->i_mode=0;
ntfs_debug(DEBUG_OTHER, "ntfs_read_inode %x\n",(unsigned)inode->i_ino);
switch(inode->i_ino)
{
/* those are loaded special files */
case FILE_MFT:
ntfs_error("Trying to open MFT\n");return;
default:
#ifdef NTFS_IN_LINUX_KERNEL
ino=&inode->u.ntfs_i;
#else
/* FIXME: check for ntfs_malloc failure */
ino=(ntfs_inode*)ntfs_malloc(sizeof(ntfs_inode));
inode->u.generic_ip=ino;
#endif
if(!ino || ntfs_init_inode(ino,
NTFS_INO2VOL(inode),inode->i_ino))
{
ntfs_debug(DEBUG_OTHER, "NTFS:Error loading inode %x\n",
(unsigned int)inode->i_ino);
return;
}
}
/* Set uid/gid from mount options */
inode->i_uid=vol->uid;
inode->i_gid=vol->gid;
inode->i_nlink=1;
/* Use the size of the data attribute as file size */
data = ntfs_find_attr(ino,vol->at_data,NULL);
if(!data)
{
inode->i_size=0;
can_mmap=0;
}
else
{
inode->i_size=data->size;
/* FIXME: once ntfs_get_block is implemented, uncomment the
* next line and remove the can_mmap = 0; */
/* can_mmap=!data->resident && !data->compressed;*/
can_mmap = 0;
}
/* get the file modification times from the standard information */
si=ntfs_find_attr(ino,vol->at_standard_information,NULL);
if(si){
char *attr=si->d.data;
inode->i_atime=ntfs_ntutc2unixutc(NTFS_GETU64(attr+0x18));
inode->i_ctime=ntfs_ntutc2unixutc(NTFS_GETU64(attr));
inode->i_mtime=ntfs_ntutc2unixutc(NTFS_GETU64(attr+8));
}
/* if it has an index root, it's a directory */
if(ntfs_find_attr(ino,vol->at_index_root,"$I30"))
{
ntfs_attribute *at;
at = ntfs_find_attr (ino, vol->at_index_allocation, "$I30");
inode->i_size = at ? at->size : 0;
inode->i_op=&ntfs_dir_inode_operations;
inode->i_fop=&ntfs_dir_operations;
inode->i_mode=S_IFDIR|S_IRUGO|S_IXUGO;
}
else
{
/* As long as ntfs_get_block() is just a call to BUG() do not
* define any [bm]map ops or we get the BUG() whenever someone
* runs mc or mpg123 on an ntfs partition!
* FIXME: Uncomment the below code when ntfs_get_block is
* implemented. */
/* if (can_mmap) {
inode->i_op = &ntfs_inode_operations;
inode->i_fop = &ntfs_file_operations;
inode->i_mapping->a_ops = &ntfs_aops;
inode->u.ntfs_i.mmu_private = inode->i_size;
} else */ {
inode->i_op=&ntfs_inode_operations_nobmap;
inode->i_fop=&ntfs_file_operations_nommap;
}
inode->i_mode=S_IFREG|S_IRUGO;
}
#ifdef CONFIG_NTFS_RW
if(!data || !data->compressed)
inode->i_mode|=S_IWUGO;
#endif
inode->i_mode &= ~vol->umask;
}
static int
ntfs_create(struct inode* dir,struct dentry *d,int mode)
{
struct inode *r=0;
ntfs_inode *ino=0;
ntfs_volume *vol;
int error=0;
ntfs_attribute *si;
r=new_inode(dir->i_sb);
if(!r){
error=ENOMEM;
goto fail;
}
ntfs_debug(DEBUG_OTHER, "ntfs_create %s\n",d->d_name.name);
vol=NTFS_INO2VOL(dir);
#ifdef NTFS_IN_LINUX_KERNEL
ino=NTFS_LINO2NINO(r);
#else
ino=ntfs_malloc(sizeof(ntfs_inode));
if(!ino){
error=ENOMEM;
goto fail;
}
r->u.generic_ip=ino;
#endif
error=ntfs_alloc_file(NTFS_LINO2NINO(dir),ino,(char*)d->d_name.name,
d->d_name.len);
if(error)goto fail;
error=ntfs_update_inode(ino);
if(error)goto fail;
error=ntfs_update_inode(NTFS_LINO2NINO(dir));
if(error)goto fail;
r->i_uid=vol->uid;
r->i_gid=vol->gid;
/* FIXME: dirty? dev? */
/* get the file modification times from the standard information */
si=ntfs_find_attr(ino,vol->at_standard_information,NULL);
if(si){
char *attr=si->d.data;
r->i_atime=ntfs_ntutc2unixutc(NTFS_GETU64(attr+0x18));
r->i_ctime=ntfs_ntutc2unixutc(NTFS_GETU64(attr));
r->i_mtime=ntfs_ntutc2unixutc(NTFS_GETU64(attr+8));
}
/* It's not a directory */
r->i_op=&ntfs_inode_operations_nobmap;
r->i_fop=&ntfs_file_operations_nommap,
r->i_mode=S_IFREG|S_IRUGO;
#ifdef CONFIG_NTFS_RW
r->i_mode|=S_IWUGO;
#endif
r->i_mode &= ~vol->umask;
insert_inode_hash(r);
d_instantiate(d,r);
return 0;
fail:
#ifndef NTFS_IN_LINUX_KERNEL
if(ino)ntfs_free(ino);
#endif
if(r)iput(r);
return -error;
}
/* ntfs_read_inode is called by the Virtual File System (the kernel layer that
* deals with filesystems) when iget is called requesting an inode not already
* present in the inode table. Typically filesystems have separate
* inode_operations for directories, files and symlinks.
*/
static void ntfs_read_inode(struct inode* inode)
{
ntfs_volume *vol;
int can_mmap=0;
ntfs_inode *ino;
ntfs_attribute *data;
ntfs_attribute *si;
vol=NTFS_INO2VOL(inode);
inode->i_op=NULL;
inode->i_mode=0;
ntfs_debug(DEBUG_OTHER, "ntfs_read_inode %x\n",(unsigned)inode->i_ino);
switch(inode->i_ino)
{
/* those are loaded special files */
case FILE_MFT:
ntfs_error("Trying to open MFT\n");return;
default:
#ifdef NTFS_IN_LINUX_KERNEL
ino=&inode->u.ntfs_i;
#else
/* FIXME: check for ntfs_malloc failure */
ino=(ntfs_inode*)ntfs_malloc(sizeof(ntfs_inode));
inode->u.generic_ip=ino;
#endif
if(!ino || ntfs_init_inode(ino,
NTFS_INO2VOL(inode),inode->i_ino))
{
ntfs_debug(DEBUG_OTHER, "NTFS:Error loading inode %x\n",
(unsigned int)inode->i_ino);
return;
}
}
/* Set uid/gid from mount options */
inode->i_uid=vol->uid;
inode->i_gid=vol->gid;
inode->i_nlink=1;
/* Use the size of the data attribute as file size */
data = ntfs_find_attr(ino,vol->at_data,NULL);
if(!data)
{
inode->i_size=0;
can_mmap=0;
}
else
{
inode->i_size=data->size;
can_mmap=!data->resident && !data->compressed;
}
/* get the file modification times from the standard information */
si=ntfs_find_attr(ino,vol->at_standard_information,NULL);
if(si){
char *attr=si->d.data;
inode->i_atime=ntfs_ntutc2unixutc(NTFS_GETU64(attr+0x18));
inode->i_ctime=ntfs_ntutc2unixutc(NTFS_GETU64(attr));
inode->i_mtime=ntfs_ntutc2unixutc(NTFS_GETU64(attr+8));
}
/* if it has an index root, it's a directory */
if(ntfs_find_attr(ino,vol->at_index_root,"$I30"))
{
ntfs_attribute *at;
at = ntfs_find_attr (ino, vol->at_index_allocation, "$I30");
inode->i_size = at ? at->size : 0;
inode->i_op=&ntfs_dir_inode_operations;
inode->i_mode=S_IFDIR|S_IRUGO|S_IXUGO;
}
else
{
inode->i_op=can_mmap ? &ntfs_inode_operations :
&ntfs_inode_operations_nobmap;
inode->i_mode=S_IFREG|S_IRUGO;
}
#ifdef CONFIG_NTFS_RW
if(!data || !data->compressed)
inode->i_mode|=S_IWUGO;
#endif
inode->i_mode &= ~vol->umask;
}
