diff options
Diffstat (limited to 'security/keys/keyring.c')
| -rw-r--r-- | security/keys/keyring.c | 64 |
1 files changed, 16 insertions, 48 deletions
diff --git a/security/keys/keyring.c b/security/keys/keyring.c index d37f713e73c..0a2b8e916d9 100644 --- a/security/keys/keyring.c +++ b/security/keys/keyring.c @@ -80,7 +80,6 @@ EXPORT_SYMBOL(key_type_keyring); */ static DECLARE_RWSEM(keyring_serialise_link_sem); -/*****************************************************************************/ /* * publish the name of a keyring so that it can be found by name (if it has * one) @@ -102,10 +101,8 @@ static void keyring_publish_name(struct key *keyring) write_unlock(&keyring_name_lock); } +} -} /* end keyring_publish_name() */ - -/*****************************************************************************/ /* * initialise a keyring * - we object if we were given any data @@ -123,10 +120,8 @@ static int keyring_instantiate(struct key *keyring, } return ret; +} -} /* end keyring_instantiate() */ - -/*****************************************************************************/ /* * match keyrings on their name */ @@ -134,10 +129,8 @@ static int keyring_match(const struct key *keyring, const void *description) { return keyring->description && strcmp(keyring->description, description) == 0; +} -} /* end keyring_match() */ - -/*****************************************************************************/ /* * dispose of the data dangling from the corpse of a keyring */ @@ -164,10 +157,8 @@ static void keyring_destroy(struct key *keyring) key_put(klist->keys[loop]); kfree(klist); } +} -} /* end keyring_destroy() */ - -/*****************************************************************************/ /* * describe the keyring */ @@ -187,10 +178,8 @@ static void keyring_describe(const struct key *keyring, struct seq_file *m) else seq_puts(m, ": empty"); rcu_read_unlock(); +} -} /* end keyring_describe() */ - -/*****************************************************************************/ /* * read a list of key IDs from the keyring's contents * - the keyring's semaphore is read-locked @@ -241,10 +230,8 @@ static long keyring_read(const struct key *keyring, error: return ret; +} -} /* end keyring_read() */ - -/*****************************************************************************/ /* * allocate a keyring and link into the destination keyring */ @@ -269,10 +256,8 @@ struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid, } return keyring; +} -} /* end keyring_alloc() */ - -/*****************************************************************************/ /* * search the supplied keyring tree for a key that matches the criterion * - perform a breadth-then-depth search up to the prescribed limit @@ -444,10 +429,8 @@ error_2: rcu_read_unlock(); error: return key_ref; +} -} /* end keyring_search_aux() */ - -/*****************************************************************************/ /* * search the supplied keyring tree for a key that matches the criterion * - perform a breadth-then-depth search up to the prescribed limit @@ -465,12 +448,10 @@ key_ref_t keyring_search(key_ref_t keyring, return keyring_search_aux(keyring, current->cred, type, description, type->match); - -} /* end keyring_search() */ +} EXPORT_SYMBOL(keyring_search); -/*****************************************************************************/ /* * search the given keyring only (no recursion) * - keyring must be locked by caller @@ -514,10 +495,8 @@ found: atomic_inc(&key->usage); rcu_read_unlock(); return make_key_ref(key, possessed); +} -} /* end __keyring_search_one() */ - -/*****************************************************************************/ /* * find a keyring with the specified name * - all named keyrings are searched @@ -569,10 +548,8 @@ struct key *find_keyring_by_name(const char *name, bool skip_perm_check) out: read_unlock(&keyring_name_lock); return keyring; +} -} /* end find_keyring_by_name() */ - -/*****************************************************************************/ /* * see if a cycle will will be created by inserting acyclic tree B in acyclic * tree A at the topmost level (ie: as a direct child of A) @@ -657,8 +634,7 @@ too_deep: cycle_detected: ret = -EDEADLK; goto error; - -} /* end keyring_detect_cycle() */ +} /* * dispose of a keyring list after the RCU grace period, freeing the unlinked @@ -898,7 +874,6 @@ int key_link(struct key *keyring, struct key *key) EXPORT_SYMBOL(key_link); -/*****************************************************************************/ /* * unlink the first link to a key from a keyring */ @@ -968,12 +943,10 @@ nomem: ret = -ENOMEM; up_write(&keyring->sem); goto error; - -} /* end key_unlink() */ +} EXPORT_SYMBOL(key_unlink); -/*****************************************************************************/ /* * dispose of a keyring list after the RCU grace period, releasing the keys it * links to @@ -989,10 +962,8 @@ static void keyring_clear_rcu_disposal(struct rcu_head *rcu) key_put(klist->keys[loop]); kfree(klist); +} -} /* end keyring_clear_rcu_disposal() */ - -/*****************************************************************************/ /* * clear the specified process keyring * - implements keyctl(KEYCTL_CLEAR) @@ -1027,12 +998,10 @@ int keyring_clear(struct key *keyring) } return ret; - -} /* end keyring_clear() */ +} EXPORT_SYMBOL(keyring_clear); -/*****************************************************************************/ /* * dispose of the links from a revoked keyring * - called with the key sem write-locked @@ -1050,8 +1019,7 @@ static void keyring_revoke(struct key *keyring) rcu_assign_pointer(keyring->payload.subscriptions, NULL); call_rcu(&klist->rcu, keyring_clear_rcu_disposal); } - -} /* end keyring_revoke() */ +} /* * Determine whether a key is dead |