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-rw-r--r--security/keys/internal.h1
-rw-r--r--security/keys/keyctl.c2
-rw-r--r--security/keys/keyring.c11
-rw-r--r--security/keys/request_key.c39
4 files changed, 36 insertions, 17 deletions
diff --git a/security/keys/internal.h b/security/keys/internal.h
index 5a561f5f199e..f1f2b076f3a1 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -156,6 +156,7 @@ extern int install_session_keyring_to_cred(struct cred *, struct key *);
extern struct key *request_key_and_link(struct key_type *type,
const char *description,
+ struct key_tag *domain_tag,
const void *callout_info,
size_t callout_len,
void *aux,
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 4bb5781d3ddf..d2f8eabcbcf4 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -224,7 +224,7 @@ SYSCALL_DEFINE4(request_key, const char __user *, _type,
}
/* do the search */
- key = request_key_and_link(ktype, description, callout_info,
+ key = request_key_and_link(ktype, description, NULL, callout_info,
callout_len, NULL, key_ref_to_ptr(dest_ref),
KEY_ALLOC_IN_QUOTA);
if (IS_ERR(key)) {
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index bca070f6ab46..29c31585ed61 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -222,10 +222,13 @@ void key_set_index_key(struct keyring_index_key *index_key)
memcpy(index_key->desc, index_key->description, n);
- if (index_key->type->flags & KEY_TYPE_NET_DOMAIN)
- index_key->domain_tag = current->nsproxy->net_ns->key_domain;
- else
- index_key->domain_tag = &default_domain_tag;
+ if (!index_key->domain_tag) {
+ if (index_key->type->flags & KEY_TYPE_NET_DOMAIN)
+ index_key->domain_tag = current->nsproxy->net_ns->key_domain;
+ else
+ index_key->domain_tag = &default_domain_tag;
+ }
+
hash_key_type_and_desc(index_key);
}
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index 9201ca96c4df..aa589d3c90e2 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -17,6 +17,7 @@
#include <linux/err.h>
#include <linux/keyctl.h>
#include <linux/slab.h>
+#include <net/net_namespace.h>
#include "internal.h"
#include <keys/request_key_auth-type.h>
@@ -533,16 +534,18 @@ error:
* request_key_and_link - Request a key and cache it in a keyring.
* @type: The type of key we want.
* @description: The searchable description of the key.
+ * @domain_tag: The domain in which the key operates.
* @callout_info: The data to pass to the instantiation upcall (or NULL).
* @callout_len: The length of callout_info.
* @aux: Auxiliary data for the upcall.
* @dest_keyring: Where to cache the key.
* @flags: Flags to key_alloc().
*
- * A key matching the specified criteria is searched for in the process's
- * keyrings and returned with its usage count incremented if found. Otherwise,
- * if callout_info is not NULL, a key will be allocated and some service
- * (probably in userspace) will be asked to instantiate it.
+ * A key matching the specified criteria (type, description, domain_tag) is
+ * searched for in the process's keyrings and returned with its usage count
+ * incremented if found. Otherwise, if callout_info is not NULL, a key will be
+ * allocated and some service (probably in userspace) will be asked to
+ * instantiate it.
*
* If successfully found or created, the key will be linked to the destination
* keyring if one is provided.
@@ -558,6 +561,7 @@ error:
*/
struct key *request_key_and_link(struct key_type *type,
const char *description,
+ struct key_tag *domain_tag,
const void *callout_info,
size_t callout_len,
void *aux,
@@ -566,6 +570,7 @@ struct key *request_key_and_link(struct key_type *type,
{
struct keyring_search_context ctx = {
.index_key.type = type,
+ .index_key.domain_tag = domain_tag,
.index_key.description = description,
.index_key.desc_len = strlen(description),
.cred = current_cred(),
@@ -672,9 +677,10 @@ int wait_for_key_construction(struct key *key, bool intr)
EXPORT_SYMBOL(wait_for_key_construction);
/**
- * request_key - Request a key and wait for construction
+ * request_key_tag - Request a key and wait for construction
* @type: Type of key.
* @description: The searchable description of the key.
+ * @domain_tag: The domain in which the key operates.
* @callout_info: The data to pass to the instantiation upcall (or NULL).
*
* As for request_key_and_link() except that it does not add the returned key
@@ -685,9 +691,10 @@ EXPORT_SYMBOL(wait_for_key_construction);
* Furthermore, it then works as wait_for_key_construction() to wait for the
* completion of keys undergoing construction with a non-interruptible wait.
*/
-struct key *request_key(struct key_type *type,
- const char *description,
- const char *callout_info)
+struct key *request_key_tag(struct key_type *type,
+ const char *description,
+ struct key_tag *domain_tag,
+ const char *callout_info)
{
struct key *key;
size_t callout_len = 0;
@@ -695,7 +702,8 @@ struct key *request_key(struct key_type *type,
if (callout_info)
callout_len = strlen(callout_info);
- key = request_key_and_link(type, description, callout_info, callout_len,
+ key = request_key_and_link(type, description, domain_tag,
+ callout_info, callout_len,
NULL, NULL, KEY_ALLOC_IN_QUOTA);
if (!IS_ERR(key)) {
ret = wait_for_key_construction(key, false);
@@ -706,12 +714,13 @@ struct key *request_key(struct key_type *type,
}
return key;
}
-EXPORT_SYMBOL(request_key);
+EXPORT_SYMBOL(request_key_tag);
/**
* request_key_with_auxdata - Request a key with auxiliary data for the upcaller
* @type: The type of key we want.
* @description: The searchable description of the key.
+ * @domain_tag: The domain in which the key operates.
* @callout_info: The data to pass to the instantiation upcall (or NULL).
* @callout_len: The length of callout_info.
* @aux: Auxiliary data for the upcall.
@@ -724,6 +733,7 @@ EXPORT_SYMBOL(request_key);
*/
struct key *request_key_with_auxdata(struct key_type *type,
const char *description,
+ struct key_tag *domain_tag,
const void *callout_info,
size_t callout_len,
void *aux)
@@ -731,7 +741,8 @@ struct key *request_key_with_auxdata(struct key_type *type,
struct key *key;
int ret;
- key = request_key_and_link(type, description, callout_info, callout_len,
+ key = request_key_and_link(type, description, domain_tag,
+ callout_info, callout_len,
aux, NULL, KEY_ALLOC_IN_QUOTA);
if (!IS_ERR(key)) {
ret = wait_for_key_construction(key, false);
@@ -748,6 +759,7 @@ EXPORT_SYMBOL(request_key_with_auxdata);
* request_key_rcu - Request key from RCU-read-locked context
* @type: The type of key we want.
* @description: The name of the key we want.
+ * @domain_tag: The domain in which the key operates.
*
* Request a key from a context that we may not sleep in (such as RCU-mode
* pathwalk). Keys under construction are ignored.
@@ -755,10 +767,13 @@ EXPORT_SYMBOL(request_key_with_auxdata);
* Return a pointer to the found key if successful, -ENOKEY if we couldn't find
* a key or some other error if the key found was unsuitable or inaccessible.
*/
-struct key *request_key_rcu(struct key_type *type, const char *description)
+struct key *request_key_rcu(struct key_type *type,
+ const char *description,
+ struct key_tag *domain_tag)
{
struct keyring_search_context ctx = {
.index_key.type = type,
+ .index_key.domain_tag = domain_tag,
.index_key.description = description,
.index_key.desc_len = strlen(description),
.cred = current_cred(),
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 20:26:56 +0000