pidfd_show_fdinfo

Name:pidfd_show_fdinfo - print information about a pidfd*@m: proc fdinfo file*@f: file referencing a pidfd* Pid:* This function will print the pid that a given pidfd refers to in the* pid namespace of the procfs instance

Proto:static void pidfd_show_fdinfo(struct seq_file *m, struct file *f)

Type:void

Parameter:

Type	Parameter	Name
struct seq_file *	m
struct file *	f

1739

pid = needed for tty driver, and maybe others

1741

nr = -1

1743

If Value is more likely to compile time(pid_has_task(pid, PIDTYPE_PID)) Then

1744

ns = get the associated pid namespace for a file in procfs

1745

nr = pid_nr_ns(pid, ns)

1748

seq_put_decimal_ll(m, "Pid:\t", nr)

1764

seq_putc(m, '\n')

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Function report