}
rc = ecryptfs_create_underlying_file(lower_dir_dentry->d_inode,
ecryptfs_dentry, mode, nd);
- if (unlikely(rc)) {
- ecryptfs_printk(KERN_ERR,
- "Failure to create underlying file\n");
- goto out_lock;
+ if (rc) {
+ struct inode *ecryptfs_inode = ecryptfs_dentry->d_inode;
+ struct ecryptfs_inode_info *inode_info =
+ ecryptfs_inode_to_private(ecryptfs_inode);
+
+ printk(KERN_WARNING "%s: Error creating underlying file; "
+ "rc = [%d]; checking for existing\n", __FUNCTION__, rc);
+ if (inode_info) {
+ mutex_lock(&inode_info->lower_file_mutex);
+ if (!inode_info->lower_file) {
+ mutex_unlock(&inode_info->lower_file_mutex);
+ printk(KERN_ERR "%s: Failure to set underlying "
+ "file; rc = [%d]\n", __FUNCTION__, rc);
+ goto out_lock;
+ }
+ mutex_unlock(&inode_info->lower_file_mutex);
+ }
}
rc = ecryptfs_interpose(lower_dentry, ecryptfs_dentry,
directory_inode->i_sb, 0);
/**
* grow_file
- * @ecryptfs_dentry: the ecryptfs dentry
- * @lower_file: The lower file
- * @inode: The ecryptfs inode
- * @lower_inode: The lower inode
+ * @ecryptfs_dentry: the eCryptfs dentry
*
* This is the code which will grow the file to its correct size.
*/
-static int grow_file(struct dentry *ecryptfs_dentry, struct file *lower_file,
- struct inode *inode, struct inode *lower_inode)
+static int grow_file(struct dentry *ecryptfs_dentry)
{
- int rc = 0;
+ struct inode *ecryptfs_inode = ecryptfs_dentry->d_inode;
struct file fake_file;
struct ecryptfs_file_info tmp_file_info;
+ char zero_virt[] = { 0x00 };
+ int rc = 0;
memset(&fake_file, 0, sizeof(fake_file));
fake_file.f_path.dentry = ecryptfs_dentry;
memset(&tmp_file_info, 0, sizeof(tmp_file_info));
ecryptfs_set_file_private(&fake_file, &tmp_file_info);
- ecryptfs_set_file_lower(&fake_file, lower_file);
- rc = ecryptfs_fill_zeros(&fake_file, 1);
- if (rc) {
- ecryptfs_inode_to_private(inode)->crypt_stat.flags |=
- ECRYPTFS_SECURITY_WARNING;
- ecryptfs_printk(KERN_WARNING, "Error attempting to fill zeros "
- "in file; rc = [%d]\n", rc);
- goto out;
- }
- i_size_write(inode, 0);
- rc = ecryptfs_write_inode_size_to_metadata(lower_file, lower_inode,
- inode, ecryptfs_dentry,
- ECRYPTFS_LOWER_I_MUTEX_NOT_HELD);
- ecryptfs_inode_to_private(inode)->crypt_stat.flags |= ECRYPTFS_NEW_FILE;
-out:
+ ecryptfs_set_file_lower(
+ &fake_file,
+ ecryptfs_inode_to_private(ecryptfs_inode)->lower_file);
+ rc = ecryptfs_write(&fake_file, zero_virt, 0, 1);
+ i_size_write(ecryptfs_inode, 0);
+ rc = ecryptfs_write_inode_size_to_metadata(ecryptfs_inode);
+ ecryptfs_inode_to_private(ecryptfs_inode)->crypt_stat.flags |=
+ ECRYPTFS_NEW_FILE;
return rc;
}
*/
static int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry)
{
+ struct ecryptfs_crypt_stat *crypt_stat =
+ &ecryptfs_inode_to_private(ecryptfs_dentry->d_inode)->crypt_stat;
int rc = 0;
- int lower_flags;
- struct ecryptfs_crypt_stat *crypt_stat;
- struct dentry *lower_dentry;
- struct file *lower_file;
- struct inode *inode, *lower_inode;
- struct vfsmount *lower_mnt;
- lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
- ecryptfs_printk(KERN_DEBUG, "lower_dentry->d_name.name = [%s]\n",
- lower_dentry->d_name.name);
- inode = ecryptfs_dentry->d_inode;
- crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat;
- lower_flags = ((O_CREAT | O_TRUNC) & O_ACCMODE) | O_RDWR;
- lower_mnt = ecryptfs_dentry_to_lower_mnt(ecryptfs_dentry);
- /* Corresponding fput() at end of this function */
- if ((rc = ecryptfs_open_lower_file(&lower_file, lower_dentry, lower_mnt,
- lower_flags))) {
- ecryptfs_printk(KERN_ERR,
- "Error opening dentry; rc = [%i]\n", rc);
- goto out;
- }
- lower_inode = lower_dentry->d_inode;
if (S_ISDIR(ecryptfs_dentry->d_inode->i_mode)) {
ecryptfs_printk(KERN_DEBUG, "This is a directory\n");
crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
- goto out_fput;
+ goto out;
}
crypt_stat->flags |= ECRYPTFS_NEW_FILE;
ecryptfs_printk(KERN_DEBUG, "Initializing crypto context\n");
rc = ecryptfs_new_file_context(ecryptfs_dentry);
if (rc) {
- ecryptfs_printk(KERN_DEBUG, "Error creating new file "
- "context\n");
- goto out_fput;
+ ecryptfs_printk(KERN_ERR, "Error creating new file "
+ "context; rc = [%d]\n", rc);
+ goto out;
}
- rc = ecryptfs_write_metadata(ecryptfs_dentry, lower_file);
+ rc = ecryptfs_write_metadata(ecryptfs_dentry);
if (rc) {
- ecryptfs_printk(KERN_DEBUG, "Error writing headers\n");
- goto out_fput;
+ printk(KERN_ERR "Error writing headers; rc = [%d]\n", rc);
+ goto out;
}
- rc = grow_file(ecryptfs_dentry, lower_file, inode, lower_inode);
-out_fput:
- if ((rc = ecryptfs_close_lower_file(lower_file)))
- printk(KERN_ERR "Error closing lower_file\n");
+ rc = grow_file(ecryptfs_dentry);
+ if (rc)
+ printk(KERN_ERR "Error growing file; rc = [%d]\n", rc);
out:
return rc;
}
{
int rc;
+ /* ecryptfs_do_create() calls ecryptfs_interpose(), which opens
+ * the crypt_stat->lower_file (persistent file) */
rc = ecryptfs_do_create(directory_inode, ecryptfs_dentry, mode, nd);
if (unlikely(rc)) {
ecryptfs_printk(KERN_WARNING, "Failed to create file in"
crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED))
ecryptfs_set_default_sizes(crypt_stat);
- rc = ecryptfs_read_and_validate_header_region(page_virt, lower_dentry,
- nd->mnt);
+ rc = ecryptfs_read_and_validate_header_region(page_virt,
+ dentry->d_inode);
if (rc) {
rc = ecryptfs_read_and_validate_xattr_region(page_virt, dentry);
if (rc) {
dentry->d_sb)->mount_crypt_stat;
if (mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED) {
if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR)
- file_size = (crypt_stat->header_extent_size
+ file_size = ((crypt_stat->extent_size
+ * crypt_stat->num_header_extents_at_front)
+ i_size_read(lower_dentry->d_inode));
else
file_size = i_size_read(lower_dentry->d_inode);
{
loff_t lower_size;
- lower_size = ( crypt_stat->header_extent_size
- * crypt_stat->num_header_extents_at_front );
+ lower_size = (crypt_stat->extent_size
+ * crypt_stat->num_header_extents_at_front);
if (upper_size != 0) {
loff_t num_extents;
lower_dentry = ecryptfs_dentry_to_lower(dentry);
/* This dget & mntget is released through fput at out_fput: */
lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
- if ((rc = ecryptfs_open_lower_file(&lower_file, lower_dentry, lower_mnt,
- O_RDWR))) {
+ rc = ecryptfs_open_lower_file(&lower_file, lower_dentry, lower_mnt,
+ O_RDWR);
+ if (rc) {
ecryptfs_printk(KERN_ERR,
"Error opening dentry; rc = [%i]\n", rc);
goto out_free;
goto out_fput;
}
i_size_write(inode, new_length);
- rc = ecryptfs_write_inode_size_to_metadata(
- lower_file, lower_dentry->d_inode, inode, dentry,
- ECRYPTFS_LOWER_I_MUTEX_NOT_HELD);
+ rc = ecryptfs_write_inode_size_to_metadata(inode);
if (rc) {
printk(KERN_ERR "Problem with "
"ecryptfs_write_inode_size_to_metadata; "
end_pos_in_page = ((new_length - 1) & ~PAGE_CACHE_MASK);
}
if (end_pos_in_page != (PAGE_CACHE_SIZE - 1)) {
- if ((rc = ecryptfs_write_zeros(&fake_ecryptfs_file,
- index,
- (end_pos_in_page + 1),
- ((PAGE_CACHE_SIZE - 1)
- - end_pos_in_page)))) {
+ rc = ecryptfs_write_zeros(&fake_ecryptfs_file,
+ index,
+ (end_pos_in_page + 1),
+ ((PAGE_CACHE_SIZE - 1)
+ - end_pos_in_page));
+ if (rc) {
printk(KERN_ERR "Error attempting to zero out "
"the remainder of the end page on "
"reducing truncate; rc = [%d]\n", rc);
}
}
vmtruncate(inode, new_length);
- rc = ecryptfs_write_inode_size_to_metadata(
- lower_file, lower_dentry->d_inode, inode, dentry,
- ECRYPTFS_LOWER_I_MUTEX_NOT_HELD);
+ rc = ecryptfs_write_inode_size_to_metadata(inode);
if (rc) {
printk(KERN_ERR "Problem with "
"ecryptfs_write_inode_size_to_metadata; "
= CURRENT_TIME;
mark_inode_dirty_sync(inode);
out_fput:
- if ((rc = ecryptfs_close_lower_file(lower_file)))
+ rc = ecryptfs_close_lower_file(lower_file);
+ if (rc)
printk(KERN_ERR "Error closing lower_file\n");
out_free:
if (ecryptfs_file_to_private(&fake_ecryptfs_file))
lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
lower_flags = O_RDONLY;
- if ((rc = ecryptfs_open_lower_file(&lower_file, lower_dentry,
- lower_mnt, lower_flags))) {
+ rc = ecryptfs_open_lower_file(&lower_file, lower_dentry,
+ lower_mnt, lower_flags);
+ if (rc) {
printk(KERN_ERR
"Error opening lower file; rc = [%d]\n", rc);
mutex_unlock(&crypt_stat->cs_mutex);
}
mount_crypt_stat = &ecryptfs_superblock_to_private(
dentry->d_sb)->mount_crypt_stat;
- if ((rc = ecryptfs_read_metadata(dentry, lower_file))) {
+ rc = ecryptfs_read_metadata(dentry);
+ if (rc) {
if (!(mount_crypt_stat->flags
& ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED)) {
rc = -EIO;
}
ssize_t
+ecryptfs_getxattr_lower(struct dentry *lower_dentry, const char *name,
+ void *value, size_t size)
+{
+ int rc = 0;
+
+ if (!lower_dentry->d_inode->i_op->getxattr) {
+ rc = -ENOSYS;
+ goto out;
+ }
+ mutex_lock(&lower_dentry->d_inode->i_mutex);
+ rc = lower_dentry->d_inode->i_op->getxattr(lower_dentry, name, value,
+ size);
+ mutex_unlock(&lower_dentry->d_inode->i_mutex);
+out:
+ return rc;
+}
+
+ssize_t
ecryptfs_getxattr(struct dentry *dentry, const char *name, void *value,
size_t size)
{
projects / profile / ivi / kernel-adaptation-intel-automotive.git / blobdiff