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exit.c: unexport __set_special_pids() 

Move __set_special_pids() from exit.c to sys.c close to its single caller
and make it static.

And rename it to set_special_pids(), another helper with this name has
gone away.

Change-Id: I0095999c845fabe07cdb3854c5ee1866220e3198
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2013-07-03 15:08:26 -07:00 committed by syphyr
parent df63f79c92
commit c194371cbd
3 changed files with 12 additions and 14 deletions
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2
include/linux/sched.h
View File

@ -2270,8 +2270,6 @@ extern struct task_struct *find_task_by_vpid(pid_t nr);
extern struct task_struct *find_task_by_pid_ns(pid_t nr,
struct pid_namespace *ns);
extern void __set_special_pids(struct pid *pid);
/* per-UID process charging. */
extern struct user_struct * alloc_uid(kuid_t);
static inline struct user_struct *get_uid(struct user_struct *u)

11
kernel/exit.c
View File

@ -313,17 +313,6 @@ kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent)
}
}
void __set_special_pids(struct pid *pid)
{
struct task_struct *curr = current->group_leader;
if (task_session(curr) != pid)
change_pid(curr, PIDTYPE_SID, pid);
if (task_pgrp(curr) != pid)
change_pid(curr, PIDTYPE_PGID, pid);
}
/*
* Let kernel threads use this to say that they allow a certain signal.
* Must not be used if kthread was cloned with CLONE_SIGHAND.

13
kernel/sys.c
View File

@ -1425,6 +1425,17 @@ out:
return retval;
}
static void set_special_pids(struct pid *pid)
{
struct task_struct *curr = current->group_leader;
if (task_session(curr) != pid)
change_pid(curr, PIDTYPE_SID, pid);
if (task_pgrp(curr) != pid)
change_pid(curr, PIDTYPE_PGID, pid);
}
SYSCALL_DEFINE0(setsid)
{
struct task_struct *group_leader = current->group_leader;
@ -1444,7 +1455,7 @@ SYSCALL_DEFINE0(setsid)
goto out;
group_leader->signal->leader = 1;
__set_special_pids(sid);
set_special_pids(sid);
proc_clear_tty(group_leader);