summaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/capability.c6
-rw-r--r--kernel/futex.c7
-rw-r--r--kernel/futex_compat.c3
-rw-r--r--kernel/pid.c19
-rw-r--r--kernel/ptrace.c3
-rw-r--r--kernel/sched.c3
-rw-r--r--kernel/signal.c2
-rw-r--r--kernel/sys.c9
8 files changed, 31 insertions, 21 deletions
diff --git a/kernel/capability.c b/kernel/capability.c
index d4377c5a36c..0d0d886d1e8 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -63,8 +63,7 @@ asmlinkage long sys_capget(cap_user_header_t header, cap_user_data_t dataptr)
read_lock(&tasklist_lock);
if (pid && pid != task_pid_vnr(current)) {
- target = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
+ target = find_task_by_vpid(pid);
if (!target) {
ret = -ESRCH;
goto out;
@@ -198,8 +197,7 @@ asmlinkage long sys_capset(cap_user_header_t header, const cap_user_data_t data)
read_lock(&tasklist_lock);
if (pid > 0 && pid != task_pid_vnr(current)) {
- target = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
+ target = find_task_by_vpid(pid);
if (!target) {
ret = -ESRCH;
goto out;
diff --git a/kernel/futex.c b/kernel/futex.c
index 86b2600381b..32710451dc2 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -446,9 +446,7 @@ static struct task_struct * futex_find_get_task(pid_t pid)
struct task_struct *p;
rcu_read_lock();
- p = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
-
+ p = find_task_by_vpid(pid);
if (!p || ((current->euid != p->euid) && (current->euid != p->uid)))
p = ERR_PTR(-ESRCH);
else
@@ -1858,8 +1856,7 @@ sys_get_robust_list(int pid, struct robust_list_head __user * __user *head_ptr,
ret = -ESRCH;
rcu_read_lock();
- p = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
+ p = find_task_by_vpid(pid);
if (!p)
goto err_unlock;
ret = -EPERM;
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index cc098e1de96..00b572666cc 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -125,8 +125,7 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
ret = -ESRCH;
read_lock(&tasklist_lock);
- p = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
+ p = find_task_by_vpid(pid);
if (!p)
goto err_unlock;
ret = -EPERM;
diff --git a/kernel/pid.c b/kernel/pid.c
index b3e6d7c41b9..73a60e265f5 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -369,6 +369,25 @@ struct task_struct *find_task_by_pid_type_ns(int type, int nr,
EXPORT_SYMBOL(find_task_by_pid_type_ns);
+struct task_struct *find_task_by_pid(pid_t nr)
+{
+ return find_task_by_pid_type_ns(PIDTYPE_PID, nr, &init_pid_ns);
+}
+EXPORT_SYMBOL(find_task_by_pid);
+
+struct task_struct *find_task_by_vpid(pid_t vnr)
+{
+ return find_task_by_pid_type_ns(PIDTYPE_PID, vnr,
+ current->nsproxy->pid_ns);
+}
+EXPORT_SYMBOL(find_task_by_vpid);
+
+struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns)
+{
+ return find_task_by_pid_type_ns(PIDTYPE_PID, nr, ns);
+}
+EXPORT_SYMBOL(find_task_by_pid_ns);
+
struct pid *get_task_pid(struct task_struct *task, enum pid_type type)
{
struct pid *pid;
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 66e99eb2d8a..b0ace60ce59 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -444,8 +444,7 @@ struct task_struct *ptrace_get_task_struct(pid_t pid)
return ERR_PTR(-EPERM);
read_lock(&tasklist_lock);
- child = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
+ child = find_task_by_vpid(pid);
if (child)
get_task_struct(child);
diff --git a/kernel/sched.c b/kernel/sched.c
index 4ac56fe3c39..5d5e107ebc4 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4168,8 +4168,7 @@ struct task_struct *idle_task(int cpu)
*/
static struct task_struct *find_process_by_pid(pid_t pid)
{
- return pid ?
- find_task_by_pid_ns(pid, current->nsproxy->pid_ns) : current;
+ return pid ? find_task_by_vpid(pid) : current;
}
/* Actually do priority change: must hold rq lock. */
diff --git a/kernel/signal.c b/kernel/signal.c
index d809cdd6c0f..783b33a0af0 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2237,7 +2237,7 @@ static int do_tkill(int tgid, int pid, int sig)
info.si_uid = current->uid;
read_lock(&tasklist_lock);
- p = find_task_by_pid_ns(pid, current->nsproxy->pid_ns);
+ p = find_task_by_vpid(pid);
if (p && (tgid <= 0 || task_tgid_vnr(p) == tgid)) {
error = check_kill_permission(sig, &info, p);
/*
diff --git a/kernel/sys.c b/kernel/sys.c
index 23620d52cf3..2befc299129 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -152,8 +152,7 @@ asmlinkage long sys_setpriority(int which, int who, int niceval)
switch (which) {
case PRIO_PROCESS:
if (who)
- p = find_task_by_pid_ns(who,
- current->nsproxy->pid_ns);
+ p = find_task_by_vpid(who);
else
p = current;
if (p)
@@ -210,8 +209,7 @@ asmlinkage long sys_getpriority(int which, int who)
switch (which) {
case PRIO_PROCESS:
if (who)
- p = find_task_by_pid_ns(who,
- current->nsproxy->pid_ns);
+ p = find_task_by_vpid(who);
else
p = current;
if (p) {
@@ -1067,7 +1065,8 @@ asmlinkage long sys_setsid(void)
* session id and so the check will always fail and make it so
* init cannot successfully call setsid.
*/
- if (session > 1 && find_task_by_pid_type(PIDTYPE_PGID, session))
+ if (session > 1 && find_task_by_pid_type_ns(PIDTYPE_PGID,
+ session, &init_pid_ns))
goto out;
group_leader->signal->leader = 1;