Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\commoncap.c Create Date:2022-07-28 18:35:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name: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

Proto:int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted)

Type:int

Parameter:

TypeParameterName
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 = __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 = caps we can actually use
208  inheritable = caps our children can inherit
209  permitted = 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  Return 0