ecryptfs_dentry_to_lower_mnt(ecryptfs_dentry);
lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
- /* Corresponding dput() and mntput() are done when the
- * persistent file is fput() when the eCryptfs inode
- * is destroyed. */
- dget(lower_dentry);
- mntget(lower_mnt);
- inode_info->lower_file = dentry_open(lower_dentry,
- lower_mnt,
- (O_RDWR | O_LARGEFILE));
- if (IS_ERR(inode_info->lower_file)) {
- dget(lower_dentry);
- mntget(lower_mnt);
- inode_info->lower_file = dentry_open(lower_dentry,
- lower_mnt,
- (O_RDONLY
- | O_LARGEFILE));
- }
- if (IS_ERR(inode_info->lower_file)) {
+ rc = ecryptfs_privileged_open(&inode_info->lower_file,
+ lower_dentry, lower_mnt);
+ if (rc || IS_ERR(inode_info->lower_file)) {
printk(KERN_ERR "Error opening lower persistent file "
- "for lower_dentry [0x%p] and lower_mnt [0x%p]\n",
- lower_dentry, lower_mnt);
+ "for lower_dentry [0x%p] and lower_mnt [0x%p]; "
+ "rc = [%d]\n", lower_dentry, lower_mnt, rc);
rc = PTR_ERR(inode_info->lower_file);
inode_info->lower_file = NULL;
}
* @lower_dentry: Existing dentry in the lower filesystem
* @dentry: ecryptfs' dentry
* @sb: ecryptfs's super_block
- * @flag: If set to true, then d_add is called, else d_instantiate is called
+ * @flags: flags to govern behavior of interpose procedure
*
* Interposes upper and lower dentries.
*
* Returns zero on success; non-zero otherwise
*/
int ecryptfs_interpose(struct dentry *lower_dentry, struct dentry *dentry,
- struct super_block *sb, int flag)
+ struct super_block *sb, u32 flags)
{
struct inode *lower_inode;
struct inode *inode;
init_special_inode(inode, lower_inode->i_mode,
lower_inode->i_rdev);
dentry->d_op = &ecryptfs_dops;
- if (flag)
+ if (flags & ECRYPTFS_INTERPOSE_FLAG_D_ADD)
d_add(dentry, inode);
else
d_instantiate(dentry, inode);
/* This size will be overwritten for real files w/ headers and
* other metadata */
fsstack_copy_inode_size(inode, lower_inode);
- rc = ecryptfs_init_persistent_file(dentry);
- if (rc) {
- printk(KERN_ERR "%s: Error attempting to initialize the "
- "persistent file for the dentry with name [%s]; "
- "rc = [%d]\n", __FUNCTION__, dentry->d_name.name, rc);
- goto out;
- }
out:
return rc;
}
-enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig, ecryptfs_opt_debug,
- ecryptfs_opt_ecryptfs_debug, ecryptfs_opt_cipher,
- ecryptfs_opt_ecryptfs_cipher, ecryptfs_opt_ecryptfs_key_bytes,
+enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig,
+ ecryptfs_opt_cipher, ecryptfs_opt_ecryptfs_cipher,
+ ecryptfs_opt_ecryptfs_key_bytes,
ecryptfs_opt_passthrough, ecryptfs_opt_xattr_metadata,
ecryptfs_opt_encrypted_view, ecryptfs_opt_err };
static match_table_t tokens = {
{ecryptfs_opt_sig, "sig=%s"},
{ecryptfs_opt_ecryptfs_sig, "ecryptfs_sig=%s"},
- {ecryptfs_opt_debug, "debug=%u"},
- {ecryptfs_opt_ecryptfs_debug, "ecryptfs_debug=%u"},
{ecryptfs_opt_cipher, "cipher=%s"},
{ecryptfs_opt_ecryptfs_cipher, "ecryptfs_cipher=%s"},
{ecryptfs_opt_ecryptfs_key_bytes, "ecryptfs_key_bytes=%u"},
"session keyring for sig specified in mount "
"option: [%s]\n", global_auth_tok->sig);
global_auth_tok->flags |= ECRYPTFS_AUTH_TOK_INVALID;
- rc = 0;
+ goto out;
} else
global_auth_tok->flags &= ~ECRYPTFS_AUTH_TOK_INVALID;
}
+out:
return rc;
}
substring_t args[MAX_OPT_ARGS];
int token;
char *sig_src;
- char *debug_src;
char *cipher_name_dst;
char *cipher_name_src;
char *cipher_key_bytes_src;
- int cipher_name_len;
if (!options) {
rc = -EINVAL;
}
sig_set = 1;
break;
- case ecryptfs_opt_debug:
- case ecryptfs_opt_ecryptfs_debug:
- debug_src = args[0].from;
- ecryptfs_verbosity =
- (int)simple_strtol(debug_src, &debug_src,
- 0);
- ecryptfs_printk(KERN_DEBUG,
- "Verbosity set to [%d]" "\n",
- ecryptfs_verbosity);
- break;
case ecryptfs_opt_cipher:
case ecryptfs_opt_ecryptfs_cipher:
cipher_name_src = args[0].from;
goto out;
}
if (!cipher_name_set) {
- cipher_name_len = strlen(ECRYPTFS_DEFAULT_CIPHER);
- if (unlikely(cipher_name_len
- >= ECRYPTFS_MAX_CIPHER_NAME_SIZE)) {
- rc = -EINVAL;
- BUG();
- goto out;
- }
- memcpy(mount_crypt_stat->global_default_cipher_name,
- ECRYPTFS_DEFAULT_CIPHER, cipher_name_len);
- mount_crypt_stat->global_default_cipher_name[cipher_name_len]
- = '\0';
+ int cipher_name_len = strlen(ECRYPTFS_DEFAULT_CIPHER);
+
+ BUG_ON(cipher_name_len >= ECRYPTFS_MAX_CIPHER_NAME_SIZE);
+
+ strcpy(mount_crypt_stat->global_default_cipher_name,
+ ECRYPTFS_DEFAULT_CIPHER);
}
if (!cipher_key_bytes_set) {
mount_crypt_stat->global_default_cipher_key_size = 0;
}
- rc = ecryptfs_add_new_key_tfm(
- NULL, mount_crypt_stat->global_default_cipher_name,
- mount_crypt_stat->global_default_cipher_key_size);
+ mutex_lock(&key_tfm_list_mutex);
+ if (!ecryptfs_tfm_exists(mount_crypt_stat->global_default_cipher_name,
+ NULL))
+ rc = ecryptfs_add_new_key_tfm(
+ NULL, mount_crypt_stat->global_default_cipher_name,
+ mount_crypt_stat->global_default_cipher_key_size);
+ mutex_unlock(&key_tfm_list_mutex);
if (rc) {
printk(KERN_ERR "Error attempting to initialize cipher with "
"name = [%s] and key size = [%td]; rc = [%d]\n",
printk(KERN_WARNING "One or more global auth toks could not "
"properly register; rc = [%d]\n", rc);
}
- rc = 0;
out:
return rc;
}
ecryptfs_printk(KERN_WARNING, "path_lookup() failed\n");
goto out;
}
- lower_root = nd.dentry;
- lower_mnt = nd.mnt;
+ lower_root = nd.path.dentry;
+ lower_mnt = nd.path.mnt;
ecryptfs_set_superblock_lower(sb, lower_root->d_sb);
sb->s_maxbytes = lower_root->d_sb->s_maxbytes;
sb->s_blocksize = lower_root->d_sb->s_blocksize;
rc = 0;
goto out;
out_free:
- path_release(&nd);
+ path_put(&nd.path);
out:
return rc;
}
* Initializes the ecryptfs_inode_info_cache when it is created
*/
static void
-inode_info_init_once(struct kmem_cache *cachep, void *vptr)
+inode_info_init_once(void *vptr)
{
struct ecryptfs_inode_info *ei = (struct ecryptfs_inode_info *)vptr;
struct kmem_cache **cache;
const char *name;
size_t size;
- void (*ctor)(struct kmem_cache *cache, void *obj);
+ void (*ctor)(void *obj);
} ecryptfs_cache_infos[] = {
{
.cache = &ecryptfs_auth_tok_list_item_cache,
.size = sizeof(struct ecryptfs_sb_info),
},
{
- .cache = &ecryptfs_header_cache_0,
- .name = "ecryptfs_headers_0",
- .size = PAGE_CACHE_SIZE,
- },
- {
.cache = &ecryptfs_header_cache_1,
.name = "ecryptfs_headers_1",
.size = PAGE_CACHE_SIZE,
.name = "ecryptfs_key_tfm_cache",
.size = sizeof(struct ecryptfs_key_tfm),
},
+ {
+ .cache = &ecryptfs_open_req_cache,
+ .name = "ecryptfs_open_req_cache",
+ .size = sizeof(struct ecryptfs_open_req),
+ },
};
static void ecryptfs_free_kmem_caches(void)
return 0;
}
-static struct kset *ecryptfs_kset;
+static struct kobject *ecryptfs_kobj;
-static ssize_t version_show(struct kset *kset, char *buff)
+static ssize_t version_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buff)
{
return snprintf(buff, PAGE_SIZE, "%d\n", ECRYPTFS_VERSIONING_MASK);
}
-static struct subsys_attribute version_attr = __ATTR_RO(version);
-
-static struct ecryptfs_version_str_map_elem {
- u32 flag;
- char *str;
-} ecryptfs_version_str_map[] = {
- {ECRYPTFS_VERSIONING_PASSPHRASE, "passphrase"},
- {ECRYPTFS_VERSIONING_PUBKEY, "pubkey"},
- {ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH, "plaintext passthrough"},
- {ECRYPTFS_VERSIONING_POLICY, "policy"},
- {ECRYPTFS_VERSIONING_XATTR, "metadata in extended attribute"},
- {ECRYPTFS_VERSIONING_MULTKEY, "multiple keys per file"}
-};
-
-static ssize_t version_str_show(struct kset *kset, char *buff)
-{
- int i;
- int remaining = PAGE_SIZE;
- int total_written = 0;
-
- buff[0] = '\0';
- for (i = 0; i < ARRAY_SIZE(ecryptfs_version_str_map); i++) {
- int entry_size;
-
- if (!(ECRYPTFS_VERSIONING_MASK
- & ecryptfs_version_str_map[i].flag))
- continue;
- entry_size = strlen(ecryptfs_version_str_map[i].str);
- if ((entry_size + 2) > remaining)
- goto out;
- memcpy(buff, ecryptfs_version_str_map[i].str, entry_size);
- buff[entry_size++] = '\n';
- buff[entry_size] = '\0';
- buff += entry_size;
- total_written += entry_size;
- remaining -= entry_size;
- }
-out:
- return total_written;
-}
-
-static struct subsys_attribute version_attr_str = __ATTR_RO(version_str);
+static struct kobj_attribute version_attr = __ATTR_RO(version);
static struct attribute *attributes[] = {
&version_attr.attr,
- &version_attr_str.attr,
NULL,
};
{
int rc;
- ecryptfs_kset = kset_create_and_add("ecryptfs", NULL, &fs_subsys.kobj);
- if (!ecryptfs_kset) {
+ ecryptfs_kobj = kobject_create_and_add("ecryptfs", fs_kobj);
+ if (!ecryptfs_kobj) {
printk(KERN_ERR "Unable to create ecryptfs kset\n");
rc = -ENOMEM;
goto out;
}
- rc = sysfs_create_group(&ecryptfs_kset->kobj, &attr_group);
+ rc = sysfs_create_group(ecryptfs_kobj, &attr_group);
if (rc) {
printk(KERN_ERR
"Unable to create ecryptfs version attributes\n");
- kset_unregister(ecryptfs_kset);
+ kobject_put(ecryptfs_kobj);
}
out:
return rc;
static void do_sysfs_unregistration(void)
{
- sysfs_remove_group(&ecryptfs_kset->kobj, &attr_group);
- kset_unregister(ecryptfs_kset);
+ sysfs_remove_group(ecryptfs_kobj, &attr_group);
+ kobject_put(ecryptfs_kobj);
}
static int __init ecryptfs_init(void)
printk(KERN_ERR "sysfs registration failed\n");
goto out_unregister_filesystem;
}
+ rc = ecryptfs_init_kthread();
+ if (rc) {
+ printk(KERN_ERR "%s: kthread initialization failed; "
+ "rc = [%d]\n", __func__, rc);
+ goto out_do_sysfs_unregistration;
+ }
rc = ecryptfs_init_messaging(ecryptfs_transport);
if (rc) {
- ecryptfs_printk(KERN_ERR, "Failure occured while attempting to "
+ printk(KERN_ERR "Failure occured while attempting to "
"initialize the eCryptfs netlink socket\n");
- goto out_do_sysfs_unregistration;
+ goto out_destroy_kthread;
}
rc = ecryptfs_init_crypto();
if (rc) {
"rc = [%d]\n", rc);
goto out_release_messaging;
}
+ if (ecryptfs_verbosity > 0)
+ printk(KERN_CRIT "eCryptfs verbosity set to %d. Secret values "
+ "will be written to the syslog!\n", ecryptfs_verbosity);
+
goto out;
out_release_messaging:
ecryptfs_release_messaging(ecryptfs_transport);
+out_destroy_kthread:
+ ecryptfs_destroy_kthread();
out_do_sysfs_unregistration:
do_sysfs_unregistration();
out_unregister_filesystem:
printk(KERN_ERR "Failure whilst attempting to destroy crypto; "
"rc = [%d]\n", rc);
ecryptfs_release_messaging(ecryptfs_transport);
+ ecryptfs_destroy_kthread();
do_sysfs_unregistration();
unregister_filesystem(&ecryptfs_fs_type);
ecryptfs_free_kmem_caches();
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff