1 files changed, 23 insertions, 14 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 21510c9aa89c..db7636041c10 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1937,14 +1937,14 @@ static int proc_self_readlink(struct dentry *dentry, char __user *buffer,
                               int buflen)
 {
         char tmp[PROC_NUMBUF];
-        sprintf(tmp, "%d", current->tgid);
+        sprintf(tmp, "%d", task_tgid_vnr(current));
         return vfs_readlink(dentry,buffer,buflen,tmp);
 }
 
 static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
         char tmp[PROC_NUMBUF];
-        sprintf(tmp, "%d", current->tgid);
+        sprintf(tmp, "%d", task_tgid_vnr(current));
         return ERR_PTR(vfs_follow_link(nd,tmp));
 }
 
@@ -2316,6 +2316,7 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct
         struct dentry *result = ERR_PTR(-ENOENT);
         struct task_struct *task;
         unsigned tgid;
+        struct pid_namespace *ns;
 
         result = proc_base_lookup(dir, dentry);
         if (!IS_ERR(result) || PTR_ERR(result) != -ENOENT)
@@ -2325,8 +2326,9 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct
         if (tgid == ~0U)
                 goto out;
 
+        ns = dentry->d_sb->s_fs_info;
         rcu_read_lock();
-        task = find_task_by_pid(tgid);
+        task = find_task_by_pid_ns(tgid, ns);
         if (task)
                 get_task_struct(task);
         rcu_read_unlock();
@@ -2343,7 +2345,8 @@ out:
  * Find the first task with tgid >= tgid
  *
  */
-static struct task_struct *next_tgid(unsigned int tgid)
+static struct task_struct *next_tgid(unsigned int tgid,
+                struct pid_namespace *ns)
 {
         struct task_struct *task;
         struct pid *pid;
@@ -2351,9 +2354,9 @@ static struct task_struct *next_tgid(unsigned int tgid)
         rcu_read_lock();
 retry:
         task = NULL;
-        pid = find_ge_pid(tgid, &init_pid_ns);
+        pid = find_ge_pid(tgid, ns);
         if (pid) {
-                tgid = pid->nr + 1;
+                tgid = pid_nr_ns(pid, ns) + 1;
                 task = pid_task(pid, PIDTYPE_PID);
                 /* What we to know is if the pid we have find is the
                  * pid of a thread_group_leader.  Testing for task
@@ -2393,6 +2396,7 @@ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir)
         struct task_struct *reaper = get_proc_task(filp->f_path.dentry->d_inode);
         struct task_struct *task;
         int tgid;
+        struct pid_namespace *ns;
 
         if (!reaper)
                 goto out_no_task;
@@ -2403,11 +2407,12 @@ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir)
                         goto out;
         }
 
+        ns = filp->f_dentry->d_sb->s_fs_info;
         tgid = filp->f_pos - TGID_OFFSET;
-        for (task = next_tgid(tgid);
+        for (task = next_tgid(tgid, ns);
              task;
-             put_task_struct(task), task = next_tgid(tgid + 1)) {
-                tgid = task->pid;
+             put_task_struct(task), task = next_tgid(tgid + 1, ns)) {
+                tgid = task_pid_nr_ns(task, ns);
                 filp->f_pos = tgid + TGID_OFFSET;
                 if (proc_pid_fill_cache(filp, dirent, filldir, task, tgid) < 0) {
                         put_task_struct(task);
@@ -2531,6 +2536,7 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry
         struct task_struct *task;
         struct task_struct *leader = get_proc_task(dir);
         unsigned tid;
+        struct pid_namespace *ns;
 
         if (!leader)
                 goto out_no_task;
@@ -2539,8 +2545,9 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry
         if (tid == ~0U)
                 goto out;
 
+        ns = dentry->d_sb->s_fs_info;
         rcu_read_lock();
-        task = find_task_by_pid(tid);
+        task = find_task_by_pid_ns(tid, ns);
         if (task)
                 get_task_struct(task);
         rcu_read_unlock();
@@ -2571,14 +2578,14 @@ out_no_task:
  * threads past it.
  */
 static struct task_struct *first_tid(struct task_struct *leader,
-                                        int tid, int nr)
+                int tid, int nr, struct pid_namespace *ns)
 {
         struct task_struct *pos;
 
         rcu_read_lock();
         /* Attempt to start with the pid of a thread */
         if (tid && (nr > 0)) {
-                pos = find_task_by_pid(tid);
+                pos = find_task_by_pid_ns(tid, ns);
                 if (pos && (pos->group_leader == leader))
                         goto found;
         }
@@ -2647,6 +2654,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
         ino_t ino;
         int tid;
         unsigned long pos = filp->f_pos;  /* avoiding "long long" filp->f_pos */
+        struct pid_namespace *ns;
 
         task = get_proc_task(inode);
         if (!task)
@@ -2680,12 +2688,13 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
         /* f_version caches the tgid value that the last readdir call couldn't
          * return. lseek aka telldir automagically resets f_version to 0.
          */
+        ns = filp->f_dentry->d_sb->s_fs_info;
         tid = (int)filp->f_version;
         filp->f_version = 0;
-        for (task = first_tid(leader, tid, pos - 2);
+        for (task = first_tid(leader, tid, pos - 2, ns);
              task;
              task = next_tid(task), pos++) {
-                tid = task->pid;
+                tid = task_pid_nr_ns(task, ns);
                 if (proc_task_fill_cache(filp, dirent, filldir, task, tid) < 0) {
                         /* returning this tgid failed, save it as the first
                          * pid for the next readir call */