函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\sched\core.c Create Date:2022-07-27 10:36:57
Last Modify:2022-05-22 13:40:38 Copyright©Brick
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函数名称：Check the target process has a UID that matches the current process's:

函数原型：static bool check_same_owner(struct task_struct *p)

返回类型：bool

参数：

类型参数名称
struct task_struct *p
4754  cred等于current_cred - Access the current task's subjective credentials* Access the subjective credentials of the current task. RCU-safe,* since nobody else can modify it.()
4757  _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
4758  pcred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();(p)
4759  match等于uid_eq(有效uid, 有效uid)或uid_eq(有效uid, 进程uid)
4761  _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()
4762  返回:match
调用者
名称描述
__sched_setscheduler
sched_setaffinity