Commit 5feb8f5f authored Oct 02, 2006 by Eric W. Biederman Committed by Linus Torvalds Oct 02, 2006

[PATCH] pid: implement pid_nr

As we stop storing pid_t's and move to storing struct pid *. We need a way to
get the pid_t from the struct pid to report to user space what we have stored.

Having a clean well defined way to do this is especially important as we move
to multiple pid spaces as may need to report a different value to the caller
depending on which pid space the caller is in.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent bbf73147

include/linux/pid.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -94,6 +94,14 @@ extern struct pid *find_ge_pid(int nr);
		extern struct pid *alloc_pid(void);
		extern void FASTCALL(free_pid(struct pid *pid));

		static inline pid_t pid_nr(struct pid *pid)
		{
		pid_t nr = 0;
		if (pid)
		nr = pid->nr;
		return nr;
		}

		#define pid_next(task, type) \
		((task)->pids[(type)].node.next)