#include "ext4.h"
#include "xattr.h"
-#ifdef CONFIG_EXT4_FS_ENCRYPTION
static const char *ext4_encrypted_get_link(struct dentry *dentry,
struct inode *inode,
struct delayed_call *done)
{
struct page *cpage = NULL;
char *caddr, *paddr = NULL;
- struct ext4_str cstr, pstr;
- struct ext4_encrypted_symlink_data *sd;
+ struct fscrypt_str cstr, pstr;
+ struct fscrypt_symlink_data *sd;
loff_t size = min_t(loff_t, i_size_read(inode), PAGE_SIZE - 1);
int res;
- u32 plen, max_size = inode->i_sb->s_blocksize;
+ u32 max_size = inode->i_sb->s_blocksize;
if (!dentry)
return ERR_PTR(-ECHILD);
- res = ext4_get_encryption_info(inode);
+ res = fscrypt_get_encryption_info(inode);
if (res)
return ERR_PTR(res);
}
/* Symlink is encrypted */
- sd = (struct ext4_encrypted_symlink_data *)caddr;
+ sd = (struct fscrypt_symlink_data *)caddr;
cstr.name = sd->encrypted_path;
cstr.len = le16_to_cpu(sd->len);
- if ((cstr.len +
- sizeof(struct ext4_encrypted_symlink_data) - 1) >
- max_size) {
+ if ((cstr.len + sizeof(struct fscrypt_symlink_data) - 1) > max_size) {
/* Symlink data on the disk is corrupted */
res = -EFSCORRUPTED;
goto errout;
}
- plen = (cstr.len < EXT4_FNAME_CRYPTO_DIGEST_SIZE*2) ?
- EXT4_FNAME_CRYPTO_DIGEST_SIZE*2 : cstr.len;
- paddr = kmalloc(plen + 1, GFP_NOFS);
- if (!paddr) {
- res = -ENOMEM;
+
+ res = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr);
+ if (res)
goto errout;
- }
- pstr.name = paddr;
- pstr.len = plen;
- res = _ext4_fname_disk_to_usr(inode, NULL, &cstr, &pstr);
+
+ res = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr);
if (res < 0)
goto errout;
+
+ paddr = pstr.name;
+
/* Null-terminate the name */
- if (res <= plen)
+ if (res <= pstr.len)
paddr[res] = '\0';
if (cpage)
put_page(cpage);
.listxattr = ext4_listxattr,
.removexattr = generic_removexattr,
};
-#endif
const struct inode_operations ext4_symlink_inode_operations = {
.readlink = generic_readlink,