Make procfs root listing work again

[Visa Hankala]

Hello,

This patch corrects the process iterator in procfs_readdir(), allowing
procfs root listing to work again. The iterator was stuck to the first
instance of allprocess list because all the relevant LIST_NEXT()
statements were mistakenly removed in revision 1.58 of procfs_vnops.c.

Regards,
Visa Hankala


Index: sys/miscfs/procfs/procfs_vnops.c
===================================================================
RCS file: /cvs/src/sys/miscfs/procfs/procfs_vnops.c,v
retrieving revision 1.60
diff -N -u -p sys/miscfs/procfs/procfs_vnops.c
--- sys/miscfs/procfs/procfs_vnops.c    8 Jul 2014 17:19:25 -0000       1.60
+++ sys/miscfs/procfs/procfs_vnops.c    19 Aug 2014 13:54:11 -0000
@@ -909,18 +909,24 @@ procfs_readdir(void *v)
                                /* fall through */
 
                        default:
-                               while (pcnt < i)
+                               while (pcnt < i) {
                                        pcnt++;
+                                       pr = LIST_NEXT(pr, ps_list);
+                                       if (pr == NULL)
+                                               goto done;
+                               }
                                d.d_fileno = PROCFS_FILENO(pr->ps_pid, Pproc);
                                d.d_namlen = snprintf(d.d_name, 
sizeof(d.d_name),
                                    "%ld", (long)pr->ps_pid);
                                d.d_type = DT_REG;
+                               pr = LIST_NEXT(pr, ps_list);
                                break;
                        }
 
                        if ((error = uiomove(&d, UIO_MX, uio)) != 0)
                                break;
                }
+       done:
 #ifdef PROCFS_ZOMBIE
                if (pr == NULL && doingzomb == 0) {
                        doingzomb = 1;