get_file_raw_ptr

Name:The caller must have pinned the task

Proto:static struct file *get_file_raw_ptr(struct task_struct *task, unsigned int idx)

Type:struct file

Parameter:

Type	Parameter	Name
struct task_struct *	task
unsigned int	idx

64

struct file * file = NULL

66

Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring* subscriptions and synchronises with wait4(). Also used in procfs. Also* pins the final release of task.io_context. Also protects ->cpuset and* ->cgroup.subsys[]. And ->vfork_done.

67

_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

69

If Open file information: Then file = fcheck_files( Open file information: , idx)

72

_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()

73

task_unlock(task)

75

Return file

**Caller**
Name	Describe
kcmp_epoll_target
SYSCALL_DEFINE5

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