Ticket #1712: mc-vfsfail.patch

mc-4.7.0/vfs/vfs.c

@@ -675 +675 @@
 mc_ctl (int handle, int ctlop, void *arg)
 {
     struct vfs_class *vfs = vfs_op (handle);
+    
+    if (vfs == NULL)
+        return 0;
 
     return vfs->ctl ? (*vfs->ctl)(vfs_info (handle), ctlop, arg) : 0;
 }
@@ -708 +711 @@
         return -1;
     
     vfs = vfs_op (handle);
+    
+    if (vfs == NULL)
+        return -1;
+    
     if (handle < 3)
         return close (handle);
 
@@ -798 +805 @@
     }
     handle = *(int *) dirp;
     vfs = vfs_op (handle);
+    if (vfs == NULL)
+        return NULL;
     dirinfo = vfs_info (handle);
     if (vfs->readdir) {
         entry = (*vfs->readdir) (dirinfo->info);
@@ -820 +829 @@
     int result;
     struct vfs_dirinfo *dirinfo;
 
+    if (vfs == NULL)
+        return -1;
+
     dirinfo = vfs_info (handle);
     if (dirinfo->converter != str_cnv_from_term) str_close_conv (dirinfo->converter);
 
@@ -874 +886 @@
     if (handle == -1)
         return -1;
     vfs = vfs_op (handle);
+    if (vfs == NULL)
+        return -1;
     result = vfs->fstat ? (*vfs->fstat) (vfs_info (handle), buf) : -1;
     if (result == -1)
         errno = vfs->name ? ferrno (vfs) : E_NOTSUPP;
@@ -967 +981 @@
         return -1;
 
     vfs = vfs_op (fd);
+    if (vfs == NULL)
+        return -1;
     result = vfs->lseek ? (*vfs->lseek)(vfs_info (fd), offset, whence) : -1;
     if (result == -1)
         errno = vfs->lseek ? ferrno (vfs) : E_NOTSUPP;