函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\audit.c Create Date:2022-07-27 12:25:10
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：auditd_pid_vnr - Return the auditd PID relative to the namespace* Description:* Returns the PID in relation to the namespace, 0 on failure.

函数原型：static pid_t auditd_pid_vnr(void)

返回类型：pid_t

参数：无

266  _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
267  ac等于cu_dereference() - fetch RCU-protected pointer for dereferencing*@p: The pointer to read, prior to dereferencing* This is a simple wrapper around rcu_dereference_check().(struct auditd_connection - kernel/auditd connection state*@pid: auditd PID*@portid: netlink portid*@net: the associated network namespace*@rcu: RCU head* Description:* This struct is RCU protected; you must either hold the RCU lock for reading)
268  如果非ac或非pid则pid等于0
270  否则pid等于pid_vnr(pid)
272  _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()
274  返回:pid
调用者
名称描述
audit_receive_msg