函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\fcntl.c Create Date:2022-07-29 10:35:46
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：sigio_perm

函数原型：static inline int sigio_perm(struct task_struct *p, struct fown_struct *fown, int sig)

返回类型：int

参数：

类型参数名称
struct task_struct *p
struct fown_struct *fown
intsig
714  _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
715  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();(p)
716  ret等于uid_eq( uid/euid of process setting the owner , GLOBAL_ROOT_UID)或uid_eq( uid/euid of process setting the owner , 保留uid)或uid_eq( uid/euid of process setting the owner , 进程uid)或uid_eq(uid, 保留uid)或uid_eq(uid, 进程uid)的值且非security_file_send_sigiotask(p, fown, sig)
720  _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()
721  返回:ret
调用者
名称描述
send_sigio_to_task
send_sigurg_to_task