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-rw-r--r--include/linux/key-ui.h41
-rw-r--r--include/linux/key.h9
-rw-r--r--include/linux/keyctl.h11
-rw-r--r--include/linux/sched.h8
4 files changed, 59 insertions, 10 deletions
diff --git a/include/linux/key-ui.h b/include/linux/key-ui.h
index 159ca8d54e9a..cc326174a808 100644
--- a/include/linux/key-ui.h
+++ b/include/linux/key-ui.h
@@ -1,4 +1,4 @@
-/* key-ui.h: key userspace interface stuff for use by keyfs
+/* key-ui.h: key userspace interface stuff
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
@@ -84,8 +84,45 @@ static inline int key_any_permission(const struct key *key, key_perm_t perm)
return kperm != 0;
}
+static inline int key_task_groups_search(struct task_struct *tsk, gid_t gid)
+{
+ int ret;
+
+ task_lock(tsk);
+ ret = groups_search(tsk->group_info, gid);
+ task_unlock(tsk);
+ return ret;
+}
+
+static inline int key_task_permission(const struct key *key,
+ struct task_struct *context,
+ key_perm_t perm)
+{
+ key_perm_t kperm;
+
+ if (key->uid == context->fsuid) {
+ kperm = key->perm >> 16;
+ }
+ else if (key->gid != -1 &&
+ key->perm & KEY_GRP_ALL && (
+ key->gid == context->fsgid ||
+ key_task_groups_search(context, key->gid)
+ )
+ ) {
+ kperm = key->perm >> 8;
+ }
+ else {
+ kperm = key->perm;
+ }
+
+ kperm = kperm & perm & KEY_ALL;
+
+ return kperm == perm;
+
+}
-extern struct key *lookup_user_key(key_serial_t id, int create, int part,
+extern struct key *lookup_user_key(struct task_struct *context,
+ key_serial_t id, int create, int partial,
key_perm_t perm);
extern long join_session_keyring(const char *name);
diff --git a/include/linux/key.h b/include/linux/key.h
index 2bfbf88d2740..970bbd916cf4 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -199,10 +199,12 @@ extern int key_payload_reserve(struct key *key, size_t datalen);
extern int key_instantiate_and_link(struct key *key,
const void *data,
size_t datalen,
- struct key *keyring);
+ struct key *keyring,
+ struct key *instkey);
extern int key_negate_and_link(struct key *key,
unsigned timeout,
- struct key *keyring);
+ struct key *keyring,
+ struct key *instkey);
extern void key_revoke(struct key *key);
extern void key_put(struct key *key);
@@ -245,9 +247,6 @@ extern struct key *keyring_search(struct key *keyring,
struct key_type *type,
const char *description);
-extern struct key *search_process_keyrings(struct key_type *type,
- const char *description);
-
extern int keyring_add_key(struct key *keyring,
struct key *key);
diff --git a/include/linux/keyctl.h b/include/linux/keyctl.h
index 381dedc370a3..8d7c59a29e09 100644
--- a/include/linux/keyctl.h
+++ b/include/linux/keyctl.h
@@ -20,6 +20,16 @@
#define KEY_SPEC_USER_SESSION_KEYRING -5 /* - key ID for UID-session keyring */
#define KEY_SPEC_GROUP_KEYRING -6 /* - key ID for GID-specific keyring */
+/* request-key default keyrings */
+#define KEY_REQKEY_DEFL_NO_CHANGE -1
+#define KEY_REQKEY_DEFL_DEFAULT 0
+#define KEY_REQKEY_DEFL_THREAD_KEYRING 1
+#define KEY_REQKEY_DEFL_PROCESS_KEYRING 2
+#define KEY_REQKEY_DEFL_SESSION_KEYRING 3
+#define KEY_REQKEY_DEFL_USER_KEYRING 4
+#define KEY_REQKEY_DEFL_USER_SESSION_KEYRING 5
+#define KEY_REQKEY_DEFL_GROUP_KEYRING 6
+
/* keyctl commands */
#define KEYCTL_GET_KEYRING_ID 0 /* ask for a keyring's ID */
#define KEYCTL_JOIN_SESSION_KEYRING 1 /* join or start named session keyring */
@@ -35,5 +45,6 @@
#define KEYCTL_READ 11 /* read a key or keyring's contents */
#define KEYCTL_INSTANTIATE 12 /* instantiate a partially constructed key */
#define KEYCTL_NEGATE 13 /* negate a partially constructed key */
+#define KEYCTL_SET_REQKEY_KEYRING 14 /* set default request-key keyring */
#endif /* _LINUX_KEYCTL_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 901742f92389..2c69682b0444 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -561,9 +561,10 @@ struct group_info {
groups_free(group_info); \
} while (0)
-struct group_info *groups_alloc(int gidsetsize);
-void groups_free(struct group_info *group_info);
-int set_current_groups(struct group_info *group_info);
+extern struct group_info *groups_alloc(int gidsetsize);
+extern void groups_free(struct group_info *group_info);
+extern int set_current_groups(struct group_info *group_info);
+extern int groups_search(struct group_info *group_info, gid_t grp);
/* access the groups "array" with this macro */
#define GROUP_AT(gi, i) \
((gi)->blocks[(i)/NGROUPS_PER_BLOCK][(i)%NGROUPS_PER_BLOCK])
@@ -660,6 +661,7 @@ struct task_struct {
struct user_struct *user;
#ifdef CONFIG_KEYS
struct key *thread_keyring; /* keyring private to this thread */
+ unsigned char jit_keyring; /* default keyring to attach requested keys to */
#endif
int oomkilladj; /* OOM kill score adjustment (bit shift). */
char comm[TASK_COMM_LEN]; /* executable name excluding path