函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\keys\process_keys.c Create Date:2022-07-27 19:56:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Install a thread keyring to the current task if it didn't have one already.* Return: 0 if a thread keyring is now present; -errno on failure.

函数原型：static int install_thread_keyring(void)

返回类型：int

参数：无

249  new等于prepare_creds - Prepare a new set of credentials for modification* Prepare a new set of task credentials for modification
250  如果非new则返回:负ENOMEM
253  ret等于Install a thread keyring to the given credentials struct if it didn't have* one already. This is allowed to overrun the quota.* Return: 0 if a thread keyring is now present; -errno on failure.
254  如果ret小于0则
255  abort_creds - Discard a set of credentials and unlock the current task*@new: The credentials that were going to be applied* Discard a set of credentials that were under construction and unlock the* current task.
256  返回:ret
259  返回:mmit_creds - Install new credentials upon the current task*@new: The credentials to be assigned* Install a new set of credentials to the current task, using RCU to replace* the old set. Both the objective and the subjective credentials pointers are
调用者
名称描述
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