函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\keys\request_key.c Create Date:2022-07-27 19:58:18
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：wait_for_key_construction - Wait for construction of a key to complete*@key: The key being waited for

函数原型：int wait_for_key_construction(struct key *key, bool intr)

返回类型：int

参数：

类型参数名称
struct key *key
boolintr
664  ret等于wait_on_bit - wait for a bit to be cleared*@word: the word being waited on, a kernel virtual address*@bit: the bit of the word being waited on*@mode: the task state to sleep in* There is a standard hashed waitqueue table for generic use. This
666  如果ret则返回:负These should never be seen by user programs. To return one of ERESTART** codes, signal_pending() MUST be set. Note that ptrace can observe these* at syscall exit tracing, but they will never be left for the debugged user* process to see.
668  ret等于key_read_state(key)
669  如果ret小于0则返回:ret
671  返回:key_validate - Validate a key.*@key: The key to be validated.* Check that a key is valid, returning 0 if the key is okay, -ENOKEY if the* key is invalidated, -EKEYREVOKED if the key's type has been removed or if
调用者
名称描述
SYSCALL_DEFINE4Search the process keyrings and keyring trees linked from those for a* matching key. Keyrings must have appropriate Search permission to be* searched.* If a key is found, it will be attached to the destination keyring if there's
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
request_key_tagquest_key_tag - Request a key and wait for construction*@type: Type of key
request_key_with_auxdataquest_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.