函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\key.h Create Date:2022-07-27 06:42:22
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__key_get

函数原型：static inline struct key *__key_get(struct key *key)

返回类型：struct key

参数：

类型参数名称
struct key *key
281  _inc - increment a refcount*@r: the refcount to increment* Similar to atomic_inc(), but will saturate at REFCOUNT_SATURATED and WARN
282  返回:key
调用者
名称描述
keyring_search_rcukeyring_search_rcu - Search a keyring tree for a matching key under RCU*@keyring_ref: A pointer to the keyring with possession indicator
find_key_to_updateSearch the given keyring for a key that might be updated.* The caller must guarantee that the keyring is a keyring and that the* permission is granted to modify the keyring as no check is made here. The
__key_linkLink a key into to a keyring.* Must be called with __key_link_begin() having being called. Discards any* already extant link to matching key if there is one, so that each keyring* holds at most one link to any given key of a particular type+description
install_session_keyring_to_credInstall the given keyring as the session keyring of the given credentials* struct, replacing the existing one if any. If the given keyring is NULL,* then install a new anonymous session keyring.*@cred can not be in use by any task yet.
lookup_user_keyLook up a key ID given us by userspace with a given permissions mask to get* the key it refers to.* Flags can be passed to request that special keyrings be created if referred* to directly, to permit partially constructed keys to be found and to skip
key_get