函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\apparmor\task.c Create Date:2022-07-27 21:26:27
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：aa_restore_previous_label - exit from hat context restoring previous label*@token: the token that must be matched to exit hat context* Attempt to return out of a hat to the previous label

函数原型：int aa_restore_previous_label(u64 token)

返回类型：int

参数：

类型参数名称
u64token
157  ctx等于task_ctx(当前进程)
160  如果token不等于token则返回:负EACCES
163  如果非previous则返回:0
166  new等于prepare_creds - Prepare a new set of credentials for modification* Prepare a new set of task credentials for modification
167  如果非new则返回:负ENOMEM
170  aa_put_label(cred_label(new))
171  set_cred_label(new, aa_get_newest_label - find the newest version of @l*@l: the label to check for newer versions of* Returns: refcounted newest version of @l taking into account* replacement, renames and removals* return @l.)
172  AA_BUG(!cred_label(new))
174  aa_clear_task_ctx_trans - clear transition tracking info from the ctx*@ctx: task context to clear (NOT NULL)
176  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
178  返回:0
调用者
名称描述
aa_change_hataa_change_hat - change hat to/from subprofile*@hats: vector of hat names to try changing into (MAYBE NULL if @count == 0)*@count: number of hat names in @hats*@token: magic value to validate the hat change*@flags: flags affecting behavior of the change