Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6: eCryptfs: Print mount_auth_tok_only param in ecryptfs_show_options ecryptfs: added ecryptfs_mount_auth_tok_only mount parameter ecryptfs: checking return code of ecryptfs_find_auth_tok_for_sig() ecryptfs: release keys loaded in ecryptfs_keyring_auth_tok_for_sig() eCryptfs: Clear LOOKUP_OPEN flag when creating lower file ecryptfs: call vfs_setxattr() in ecryptfs_setxattr()
This commit is contained in:
Linus Torvalds
Коммит
12462f2df4
|
|
@ -377,6 +377,7 @@ struct ecryptfs_mount_crypt_stat {
|
|||
#define ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES 0x00000010
|
||||
#define ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK 0x00000020
|
||||
#define ECRYPTFS_GLOBAL_ENCFN_USE_FEK 0x00000040
|
||||
#define ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY 0x00000080
|
||||
u32 flags;
|
||||
struct list_head global_auth_tok_list;
|
||||
struct mutex global_auth_tok_list_mutex;
|
||||
|
|
|
|||
|
|
@ -32,6 +32,7 @@
|
|||
#include <linux/crypto.h>
|
||||
#include <linux/fs_stack.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/xattr.h>
|
||||
#include <asm/unaligned.h>
|
||||
#include "ecryptfs_kernel.h"
|
||||
|
||||
|
|
@ -70,15 +71,19 @@ ecryptfs_create_underlying_file(struct inode *lower_dir_inode,
|
|||
struct vfsmount *lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry);
|
||||
struct dentry *dentry_save;
|
||||
struct vfsmount *vfsmount_save;
|
||||
unsigned int flags_save;
|
||||
int rc;
|
||||
|
||||
dentry_save = nd->path.dentry;
|
||||
vfsmount_save = nd->path.mnt;
|
||||
flags_save = nd->flags;
|
||||
nd->path.dentry = lower_dentry;
|
||||
nd->path.mnt = lower_mnt;
|
||||
nd->flags &= ~LOOKUP_OPEN;
|
||||
rc = vfs_create(lower_dir_inode, lower_dentry, mode, nd);
|
||||
nd->path.dentry = dentry_save;
|
||||
nd->path.mnt = vfsmount_save;
|
||||
nd->flags = flags_save;
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -1108,10 +1113,8 @@ ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
|
|||
rc = -EOPNOTSUPP;
|
||||
goto out;
|
||||
}
|
||||
mutex_lock(&lower_dentry->d_inode->i_mutex);
|
||||
rc = lower_dentry->d_inode->i_op->setxattr(lower_dentry, name, value,
|
||||
size, flags);
|
||||
mutex_unlock(&lower_dentry->d_inode->i_mutex);
|
||||
|
||||
rc = vfs_setxattr(lower_dentry, name, value, size, flags);
|
||||
out:
|
||||
return rc;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -446,6 +446,7 @@ out:
|
|||
*/
|
||||
static int
|
||||
ecryptfs_find_auth_tok_for_sig(
|
||||
struct key **auth_tok_key,
|
||||
struct ecryptfs_auth_tok **auth_tok,
|
||||
struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
|
||||
char *sig)
|
||||
|
|
@ -453,12 +454,21 @@ ecryptfs_find_auth_tok_for_sig(
|
|||
struct ecryptfs_global_auth_tok *global_auth_tok;
|
||||
int rc = 0;
|
||||
|
||||
(*auth_tok_key) = NULL;
|
||||
(*auth_tok) = NULL;
|
||||
if (ecryptfs_find_global_auth_tok_for_sig(&global_auth_tok,
|
||||
mount_crypt_stat, sig)) {
|
||||
struct key *auth_tok_key;
|
||||
|
||||
rc = ecryptfs_keyring_auth_tok_for_sig(&auth_tok_key, auth_tok,
|
||||
/* if the flag ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY is set in the
|
||||
* mount_crypt_stat structure, we prevent to use auth toks that
|
||||
* are not inserted through the ecryptfs_add_global_auth_tok
|
||||
* function.
|
||||
*/
|
||||
if (mount_crypt_stat->flags
|
||||
& ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY)
|
||||
return -EINVAL;
|
||||
|
||||
rc = ecryptfs_keyring_auth_tok_for_sig(auth_tok_key, auth_tok,
|
||||
sig);
|
||||
} else
|
||||
(*auth_tok) = global_auth_tok->global_auth_tok;
|
||||
|
|
@ -509,6 +519,7 @@ ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
|
|||
char *filename, size_t filename_size)
|
||||
{
|
||||
struct ecryptfs_write_tag_70_packet_silly_stack *s;
|
||||
struct key *auth_tok_key = NULL;
|
||||
int rc = 0;
|
||||
|
||||
s = kmalloc(sizeof(*s), GFP_KERNEL);
|
||||
|
|
@ -606,6 +617,7 @@ ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes,
|
|||
}
|
||||
dest[s->i++] = s->cipher_code;
|
||||
rc = ecryptfs_find_auth_tok_for_sig(
|
||||
&auth_tok_key,
|
||||
&s->auth_tok, mount_crypt_stat,
|
||||
mount_crypt_stat->global_default_fnek_sig);
|
||||
if (rc) {
|
||||
|
|
@ -753,6 +765,8 @@ out_free_unlock:
|
|||
out_unlock:
|
||||
mutex_unlock(s->tfm_mutex);
|
||||
out:
|
||||
if (auth_tok_key)
|
||||
key_put(auth_tok_key);
|
||||
kfree(s);
|
||||
return rc;
|
||||
}
|
||||
|
|
@ -798,6 +812,7 @@ ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
|
|||
char *data, size_t max_packet_size)
|
||||
{
|
||||
struct ecryptfs_parse_tag_70_packet_silly_stack *s;
|
||||
struct key *auth_tok_key = NULL;
|
||||
int rc = 0;
|
||||
|
||||
(*packet_size) = 0;
|
||||
|
|
@ -910,7 +925,8 @@ ecryptfs_parse_tag_70_packet(char **filename, size_t *filename_size,
|
|||
* >= ECRYPTFS_MAX_IV_BYTES. */
|
||||
memset(s->iv, 0, ECRYPTFS_MAX_IV_BYTES);
|
||||
s->desc.info = s->iv;
|
||||
rc = ecryptfs_find_auth_tok_for_sig(&s->auth_tok, mount_crypt_stat,
|
||||
rc = ecryptfs_find_auth_tok_for_sig(&auth_tok_key,
|
||||
&s->auth_tok, mount_crypt_stat,
|
||||
s->fnek_sig_hex);
|
||||
if (rc) {
|
||||
printk(KERN_ERR "%s: Error attempting to find auth tok for "
|
||||
|
|
@ -986,6 +1002,8 @@ out:
|
|||
(*filename_size) = 0;
|
||||
(*filename) = NULL;
|
||||
}
|
||||
if (auth_tok_key)
|
||||
key_put(auth_tok_key);
|
||||
kfree(s);
|
||||
return rc;
|
||||
}
|
||||
|
|
@ -1557,14 +1575,19 @@ int ecryptfs_keyring_auth_tok_for_sig(struct key **auth_tok_key,
|
|||
ECRYPTFS_VERSION_MAJOR,
|
||||
ECRYPTFS_VERSION_MINOR);
|
||||
rc = -EINVAL;
|
||||
goto out;
|
||||
goto out_release_key;
|
||||
}
|
||||
if ((*auth_tok)->token_type != ECRYPTFS_PASSWORD
|
||||
&& (*auth_tok)->token_type != ECRYPTFS_PRIVATE_KEY) {
|
||||
printk(KERN_ERR "Invalid auth_tok structure "
|
||||
"returned from key query\n");
|
||||
rc = -EINVAL;
|
||||
goto out;
|
||||
goto out_release_key;
|
||||
}
|
||||
out_release_key:
|
||||
if (rc) {
|
||||
key_put(*auth_tok_key);
|
||||
(*auth_tok_key) = NULL;
|
||||
}
|
||||
out:
|
||||
return rc;
|
||||
|
|
@ -1688,6 +1711,7 @@ int ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
|
|||
struct ecryptfs_auth_tok_list_item *auth_tok_list_item;
|
||||
size_t tag_11_contents_size;
|
||||
size_t tag_11_packet_size;
|
||||
struct key *auth_tok_key = NULL;
|
||||
int rc = 0;
|
||||
|
||||
INIT_LIST_HEAD(&auth_tok_list);
|
||||
|
|
@ -1784,6 +1808,10 @@ int ecryptfs_parse_packet_set(struct ecryptfs_crypt_stat *crypt_stat,
|
|||
* just one will be sufficient to decrypt to get the FEK. */
|
||||
find_next_matching_auth_tok:
|
||||
found_auth_tok = 0;
|
||||
if (auth_tok_key) {
|
||||
key_put(auth_tok_key);
|
||||
auth_tok_key = NULL;
|
||||
}
|
||||
list_for_each_entry(auth_tok_list_item, &auth_tok_list, list) {
|
||||
candidate_auth_tok = &auth_tok_list_item->auth_tok;
|
||||
if (unlikely(ecryptfs_verbosity > 0)) {
|
||||
|
|
@ -1800,10 +1828,11 @@ find_next_matching_auth_tok:
|
|||
rc = -EINVAL;
|
||||
goto out_wipe_list;
|
||||
}
|
||||
ecryptfs_find_auth_tok_for_sig(&matching_auth_tok,
|
||||
rc = ecryptfs_find_auth_tok_for_sig(&auth_tok_key,
|
||||
&matching_auth_tok,
|
||||
crypt_stat->mount_crypt_stat,
|
||||
candidate_auth_tok_sig);
|
||||
if (matching_auth_tok) {
|
||||
if (!rc) {
|
||||
found_auth_tok = 1;
|
||||
goto found_matching_auth_tok;
|
||||
}
|
||||
|
|
@ -1866,6 +1895,8 @@ found_matching_auth_tok:
|
|||
out_wipe_list:
|
||||
wipe_auth_tok_list(&auth_tok_list);
|
||||
out:
|
||||
if (auth_tok_key)
|
||||
key_put(auth_tok_key);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -208,7 +208,8 @@ enum { ecryptfs_opt_sig, ecryptfs_opt_ecryptfs_sig,
|
|||
ecryptfs_opt_passthrough, ecryptfs_opt_xattr_metadata,
|
||||
ecryptfs_opt_encrypted_view, ecryptfs_opt_fnek_sig,
|
||||
ecryptfs_opt_fn_cipher, ecryptfs_opt_fn_cipher_key_bytes,
|
||||
ecryptfs_opt_unlink_sigs, ecryptfs_opt_err };
|
||||
ecryptfs_opt_unlink_sigs, ecryptfs_opt_mount_auth_tok_only,
|
||||
ecryptfs_opt_err };
|
||||
|
||||
static const match_table_t tokens = {
|
||||
{ecryptfs_opt_sig, "sig=%s"},
|
||||
|
|
@ -223,6 +224,7 @@ static const match_table_t tokens = {
|
|||
{ecryptfs_opt_fn_cipher, "ecryptfs_fn_cipher=%s"},
|
||||
{ecryptfs_opt_fn_cipher_key_bytes, "ecryptfs_fn_key_bytes=%u"},
|
||||
{ecryptfs_opt_unlink_sigs, "ecryptfs_unlink_sigs"},
|
||||
{ecryptfs_opt_mount_auth_tok_only, "ecryptfs_mount_auth_tok_only"},
|
||||
{ecryptfs_opt_err, NULL}
|
||||
};
|
||||
|
||||
|
|
@ -406,6 +408,10 @@ static int ecryptfs_parse_options(struct ecryptfs_sb_info *sbi, char *options)
|
|||
case ecryptfs_opt_unlink_sigs:
|
||||
mount_crypt_stat->flags |= ECRYPTFS_UNLINK_SIGS;
|
||||
break;
|
||||
case ecryptfs_opt_mount_auth_tok_only:
|
||||
mount_crypt_stat->flags |=
|
||||
ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY;
|
||||
break;
|
||||
case ecryptfs_opt_err:
|
||||
default:
|
||||
printk(KERN_WARNING
|
||||
|
|
|
|||
|
|
@ -180,6 +180,8 @@ static int ecryptfs_show_options(struct seq_file *m, struct vfsmount *mnt)
|
|||
seq_printf(m, ",ecryptfs_encrypted_view");
|
||||
if (mount_crypt_stat->flags & ECRYPTFS_UNLINK_SIGS)
|
||||
seq_printf(m, ",ecryptfs_unlink_sigs");
|
||||
if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY)
|
||||
seq_printf(m, ",ecryptfs_mount_auth_tok_only");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче