函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\commoncap.c Create Date:2022-07-27 20:09:50
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ap_capget - Retrieve a task's capability sets*@target: The task from which to retrieve the capability sets*@effective: The place to record the effective set*@inheritable: The place to record the inheritable set*@permitted: The place to record the

函数原型：int cap_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
205  _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
206  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)
207  effective等于 caps we can actually use
208  inheritable等于 caps our children can inherit
209  permitted等于 caps we're permitted
210  _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()
211  返回:0