lockd: Don't expose the process pid to the NLM server

Instead we use the nlm_lockowner->pid.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 615a988a92a7..acc3eb13a02b 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -132,8 +132,10 @@ static void nlmclnt_setlockargs(struct nlm_rqst *req, struct file_lock *fl)
         memcpy(&lock->fh, NFS_FH(fl->fl_file->f_dentry->d_inode), sizeof(struct nfs_fh));
         lock->caller  = system_utsname.nodename;
         lock->oh.data = req->a_owner;
-        lock->oh.len  = sprintf(req->a_owner, "%d@%s",
-                                current->pid, system_utsname.nodename);
+        lock->oh.len  = snprintf(req->a_owner, sizeof(req->a_owner), "%u@%s",
+                                (unsigned int)fl->fl_u.nfs_fl.owner->pid,
+                                system_utsname.nodename);
+        lock->svid = fl->fl_u.nfs_fl.owner->pid;
         locks_copy_lock(&lock->fl, fl);
 }
 
@@ -159,6 +161,7 @@ nlmclnt_setgrantargs(struct nlm_rqst *call, struct nlm_lock *lock)
 
         /* set default data area */
         call->a_args.lock.oh.data = call->a_owner;
+        call->a_args.lock.svid = lock->fl.fl_pid;
 
         if (lock->oh.len > NLMCLNT_OHSIZE) {
                 void *data = kmalloc(lock->oh.len, GFP_KERNEL);