函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\pid.c Create Date:2022-07-27 10:29:02
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：find_get_task_by_vpid

函数原型：struct task_struct *find_get_task_by_vpid(pid_t nr)

返回类型：struct task_struct

参数：

类型参数名称
pid_tnr
404  _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
405  task等于find_task_by_vpid(nr)
406  如果task则get_task_struct(task)
408  _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()
410  返回:task
调用者
名称描述
COMPAT_SYSCALL_DEFINE4
attach_to_pi_ownerLookup the task for the TID provided from user space and attach to* it after doing proper sanity checks.
fill_stats_for_pid
SYSCALL_DEFINE4
process_vm_rw_coreprocess_vm_rw_core - core of reading/writing pages from task specified*@pid: PID of process to read/write from/to*@iter: where to copy to/from locally*@rvec: iovec array specifying where to copy to/from in the other process*@riovcnt: size of rvec
yama_task_prctlyama_task_prctl - check for Yama-specific prctl operations*@option: operation*@arg2: argument*@arg3: argument*@arg4: argument*@arg5: argument* Return 0 on success, -ve on error. -ENOSYS is returned when Yama* does not handle the given option.