#include <linux/mount.h>
#include <linux/crypto.h>
#include <linux/fs_stack.h>
+#include <linux/slab.h>
#include <asm/unaligned.h>
#include "ecryptfs_kernel.h"
static int grow_file(struct dentry *ecryptfs_dentry)
{
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,
- ecryptfs_inode_to_private(ecryptfs_inode)->lower_file);
- rc = ecryptfs_write(&fake_file, zero_virt, 0, 1);
+ rc = ecryptfs_write(ecryptfs_inode, 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 |=
mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
if (IS_ERR(lower_dentry)) {
rc = PTR_ERR(lower_dentry);
- printk(KERN_ERR "%s: lookup_one_len() returned [%d] on "
- "lower_dentry = [%s]\n", __func__, rc,
- ecryptfs_dentry->d_name.name);
+ ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
+ "[%d] on lower_dentry = [%s]\n", __func__, rc,
+ encrypted_and_encoded_name);
goto out_d_drop;
}
if (lower_dentry->d_inode)
mutex_unlock(&lower_dir_dentry->d_inode->i_mutex);
if (IS_ERR(lower_dentry)) {
rc = PTR_ERR(lower_dentry);
- printk(KERN_ERR "%s: lookup_one_len() returned [%d] on "
- "lower_dentry = [%s]\n", __func__, rc,
- encrypted_and_encoded_name);
+ ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
+ "[%d] on lower_dentry = [%s]\n", __func__, rc,
+ encrypted_and_encoded_name);
goto out_d_drop;
}
lookup_and_interpose:
rc = ecryptfs_interpose(lower_new_dentry, new_dentry, dir->i_sb, 0);
if (rc)
goto out_lock;
- fsstack_copy_attr_times(dir, lower_new_dentry->d_inode);
- fsstack_copy_inode_size(dir, lower_new_dentry->d_inode);
+ fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
+ fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
old_dentry->d_inode->i_nlink =
ecryptfs_inode_to_lower(old_dentry->d_inode)->i_nlink;
i_size_write(new_dentry->d_inode, file_size_save);
{
int rc = 0;
struct inode *inode = dentry->d_inode;
- struct dentry *lower_dentry;
- struct file fake_ecryptfs_file;
struct ecryptfs_crypt_stat *crypt_stat;
loff_t i_size = i_size_read(inode);
loff_t lower_size_before_truncate;
goto out;
}
crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
- /* Set up a fake ecryptfs file, this is used to interface with
- * the file in the underlying filesystem so that the
- * truncation has an effect there as well. */
- memset(&fake_ecryptfs_file, 0, sizeof(fake_ecryptfs_file));
- fake_ecryptfs_file.f_path.dentry = dentry;
- /* Released at out_free: label */
- ecryptfs_set_file_private(&fake_ecryptfs_file,
- kmem_cache_alloc(ecryptfs_file_info_cache,
- GFP_KERNEL));
- if (unlikely(!ecryptfs_file_to_private(&fake_ecryptfs_file))) {
- rc = -ENOMEM;
- goto out;
- }
- lower_dentry = ecryptfs_dentry_to_lower(dentry);
- ecryptfs_set_file_lower(
- &fake_ecryptfs_file,
- ecryptfs_inode_to_private(dentry->d_inode)->lower_file);
/* Switch on growing or shrinking file */
if (ia->ia_size > i_size) {
char zero[] = { 0x00 };
* this triggers code that will fill in 0's throughout
* the intermediate portion of the previous end of the
* file and the new and of the file */
- rc = ecryptfs_write(&fake_ecryptfs_file, zero,
+ rc = ecryptfs_write(inode, zero,
(ia->ia_size - 1), 1);
} else { /* ia->ia_size < i_size_read(inode) */
/* We're chopping off all the pages down to the page
if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
rc = vmtruncate(inode, ia->ia_size);
if (rc)
- goto out_free;
+ goto out;
lower_ia->ia_size = ia->ia_size;
lower_ia->ia_valid |= ATTR_SIZE;
- goto out_free;
+ goto out;
}
if (num_zeros) {
char *zeros_virt;
zeros_virt = kzalloc(num_zeros, GFP_KERNEL);
if (!zeros_virt) {
rc = -ENOMEM;
- goto out_free;
+ goto out;
}
- rc = ecryptfs_write(&fake_ecryptfs_file, zeros_virt,
+ rc = ecryptfs_write(inode, zeros_virt,
ia->ia_size, num_zeros);
kfree(zeros_virt);
if (rc) {
printk(KERN_ERR "Error attempting to zero out "
"the remainder of the end page on "
"reducing truncate; rc = [%d]\n", rc);
- goto out_free;
+ goto out;
}
}
vmtruncate(inode, ia->ia_size);
printk(KERN_ERR "Problem with "
"ecryptfs_write_inode_size_to_metadata; "
"rc = [%d]\n", rc);
- goto out_free;
+ goto out;
}
/* We are reducing the size of the ecryptfs file, and need to
* know if we need to reduce the size of the lower file. */
} else
lower_ia->ia_valid &= ~ATTR_SIZE;
}
-out_free:
- if (ecryptfs_file_to_private(&fake_ecryptfs_file))
- kmem_cache_free(ecryptfs_file_info_cache,
- ecryptfs_file_to_private(&fake_ecryptfs_file));
out:
return rc;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff