函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\apparmor\lsm.c Create Date:2022-07-27 21:37:19
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Derived from security/commoncap.c:cap_capget

函数原型：static int apparmor_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted)

返回类型：int

参数：

类型参数名称
struct task_struct *target
kernel_cap_t *effective
kernel_cap_t *inheritable
kernel_cap_t *permitted
153  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
154  cred等于__task_cred - Access a task's objective credentials*@task: The task to query* Access the objective credentials of a task. The caller must hold the RCU* readlock.* The result of this function should not be passed directly to get_cred();(target)
155  label等于aa_get_newest_cred_label - obtain the newest label on a cred*@cred: cred to obtain label from (NOT NULL)* Returns: newest version of confining label
161  如果非unconfined(label)则
166  如果COMPLAIN_MODE(profile)则继续下一循环
168  effective等于cap_intersect( * effective, allow)
170  permitted等于cap_intersect( * permitted, allow)
174  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
175  aa_put_label(label)
177  返回:0