From: Ben Gras <ben@minix3.org>
Date: Thu, 31 May 2007 12:20:09 +0000 (+0000)
Subject: improve FS process bookkeeping; fixes bug where vfs tries to e.g. send
X-Git-Tag: v3.1.3a^2~4
X-Git-Url: http://zhaoyanbai.com/repos/man.delv.html?a=commitdiff_plain;h=af78f809eee3ba13f2d0263113dab61daf7ce891;p=minix.git

improve FS process bookkeeping; fixes bug where vfs tries to e.g. send
stime messages to NONE of an unmounted filesystem.
---

diff --git a/servers/vfs/main.c b/servers/vfs/main.c
index 47018444c..5c9746864 100644
--- a/servers/vfs/main.c
+++ b/servers/vfs/main.c
@@ -319,8 +319,10 @@ PRIVATE void init_root()
   last_login_fs_e = NONE;
   
   /* Initialize vmnt table */
-  for (vmp = &vmnt[0]; vmp < &vmnt[NR_MNTS]; ++vmp)
+  for (vmp = &vmnt[0]; vmp < &vmnt[NR_MNTS]; ++vmp) {
       vmp->m_dev = NO_DEV;
+      vmp->m_fs_e = NONE;
+  }
   
   vmp = &vmnt[0];
  
@@ -411,7 +413,7 @@ PRIVATE void service_pm()
                        
                         /* Send new time for all FS processes */
                         for (vmp = &vmnt[0]; vmp < &vmnt[NR_MNTS]; ++vmp) { 
-                            if (vmp->m_fs_e)
+                            if (vmp->m_fs_e != NONE)
                                 req_stime(vmp->m_fs_e, boottime);
                         }
 			/* No need to report status to PM */
diff --git a/servers/vfs/time.c b/servers/vfs/time.c
index 806fee9a2..2799e0fbe 100644
--- a/servers/vfs/time.c
+++ b/servers/vfs/time.c
@@ -72,7 +72,7 @@ PUBLIC int do_stime()
     
   /* Send new time for all FS processes */
   for (vmp = &vmnt[0]; vmp < &vmnt[NR_MNTS]; ++vmp) { 
-      if (vmp->m_fs_e) req_stime(vmp->m_fs_e, boottime);
+      if (vmp->m_fs_e != NONE) req_stime(vmp->m_fs_e, boottime);
   }
 
   return OK;
diff --git a/servers/vfs/vmnt.c b/servers/vfs/vmnt.c
index 9b92743b0..868d53d85 100644
--- a/servers/vfs/vmnt.c
+++ b/servers/vfs/vmnt.c
@@ -3,6 +3,8 @@
  *   Jul 2006 (Balazs Gerofi)
  */
 
+#include <minix/com.h>
+
 #include "fs.h"
 #include "vmnt.h"
 
@@ -27,6 +29,8 @@ PUBLIC struct vmnt *get_free_vmnt(short *index)
 PUBLIC struct vmnt *find_vmnt(int fs_e) 
 {
   struct vmnt *vp;
+  if(fs_e == NONE)
+	panic(__FILE__, "find_vmnt: find for NONE", NO_NUM);
   for (vp = &vmnt[0]; vp < &vmnt[NR_MNTS]; ++vp) {
       if (vp->m_fs_e == fs_e) return vp;
   }