Pidns: make full use of xxx_vnr() calls
Some time ago the xxx_vnr() calls (e.g. pid_vnr or find_task_by_vpid) were
_all_ converted to operate on the current pid namespace. After this each call
like xxx_nr_ns(foo, current->nsproxy->pid_ns) is nothing but a xxx_vnr(foo)
one.
Switch all the xxx_nr_ns() callers to use the xxx_vnr() calls where
appropriate.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Reviewed-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 8685263..7efe59e 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -309,7 +309,7 @@
{
pid_t pid;
read_lock(&filp->f_owner.lock);
- pid = pid_nr_ns(filp->f_owner.pid, current->nsproxy->pid_ns);
+ pid = pid_vnr(filp->f_owner.pid);
if (filp->f_owner.pid_type == PIDTYPE_PGID)
pid = -pid;
read_unlock(&filp->f_owner.lock);
diff --git a/fs/locks.c b/fs/locks.c
index 49354b9..f36f0e6 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -658,8 +658,7 @@
if (cfl) {
__locks_copy_lock(fl, cfl);
if (cfl->fl_nspid)
- fl->fl_pid = pid_nr_ns(cfl->fl_nspid,
- task_active_pid_ns(current));
+ fl->fl_pid = pid_vnr(cfl->fl_nspid);
} else
fl->fl_type = F_UNLCK;
unlock_kernel();
@@ -2084,7 +2083,7 @@
unsigned int fl_pid;
if (fl->fl_nspid)
- fl_pid = pid_nr_ns(fl->fl_nspid, task_active_pid_ns(current));
+ fl_pid = pid_vnr(fl->fl_nspid);
else
fl_pid = fl->fl_pid;
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 6ca7b97..147d502 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -332,8 +332,7 @@
(info->notify_owner &&
info->notify.sigev_notify == SIGEV_SIGNAL) ?
info->notify.sigev_signo : 0,
- pid_nr_ns(info->notify_owner,
- current->nsproxy->pid_ns));
+ pid_vnr(info->notify_owner));
spin_unlock(&info->lock);
buffer[sizeof(buffer)-1] = '\0';
slen = strlen(buffer)+1;
diff --git a/kernel/exit.c b/kernel/exit.c
index 2567de3..81345ba 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1174,7 +1174,7 @@
{
unsigned long state;
int retval, status, traced;
- pid_t pid = task_pid_nr_ns(p, current->nsproxy->pid_ns);
+ pid_t pid = task_pid_vnr(p);
if (unlikely(noreap)) {
uid_t uid = p->uid;
@@ -1369,7 +1369,7 @@
* possibly take page faults for user memory.
*/
get_task_struct(p);
- pid = task_pid_nr_ns(p, current->nsproxy->pid_ns);
+ pid = task_pid_vnr(p);
why = (p->ptrace & PT_PTRACED) ? CLD_TRAPPED : CLD_STOPPED;
read_unlock(&tasklist_lock);
@@ -1428,7 +1428,7 @@
p->signal->flags &= ~SIGNAL_STOP_CONTINUED;
spin_unlock_irq(&p->sighand->siglock);
- pid = task_pid_nr_ns(p, current->nsproxy->pid_ns);
+ pid = task_pid_vnr(p);
uid = p->uid;
get_task_struct(p);
read_unlock(&tasklist_lock);
diff --git a/kernel/fork.c b/kernel/fork.c
index ca54d97..31a2bad 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1488,13 +1488,7 @@
if (!IS_ERR(p)) {
struct completion vfork;
- /*
- * this is enough to call pid_nr_ns here, but this if
- * improves optimisation of regular fork()
- */
- nr = (clone_flags & CLONE_NEWPID) ?
- task_pid_nr_ns(p, current->nsproxy->pid_ns) :
- task_pid_vnr(p);
+ nr = task_pid_vnr(p);
if (clone_flags & CLONE_PARENT_SETTID)
put_user(nr, parent_tidptr);
diff --git a/kernel/sys.c b/kernel/sys.c
index 5a61f80..a626116 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -991,17 +991,14 @@
else {
int retval;
struct task_struct *p;
- struct pid_namespace *ns;
-
- ns = current->nsproxy->pid_ns;
read_lock(&tasklist_lock);
- p = find_task_by_pid_ns(pid, ns);
+ p = find_task_by_vpid(pid);
retval = -ESRCH;
if (p) {
retval = security_task_getpgid(p);
if (!retval)
- retval = task_pgrp_nr_ns(p, ns);
+ retval = task_pgrp_vnr(p);
}
read_unlock(&tasklist_lock);
return retval;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 9dadc9d..89d963f 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2488,7 +2488,7 @@
pid_t tmp;
int r;
- tmp = pid_nr_ns(cad_pid, current->nsproxy->pid_ns);
+ tmp = pid_vnr(cad_pid);
r = __do_proc_dointvec(&tmp, table, write, filp, buffer,
lenp, ppos, NULL, NULL);
diff --git a/kernel/timer.c b/kernel/timer.c
index 70b29b5..1c4183c 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -979,7 +979,7 @@
int pid;
rcu_read_lock();
- pid = task_tgid_nr_ns(current->real_parent, current->nsproxy->pid_ns);
+ pid = task_tgid_vnr(current->real_parent);
rcu_read_unlock();
return pid;