Changeset 440 for trunk/kernel/syscalls/sys_stat.c

Timestamp:

May 3, 2018, 5:51:22 PM (7 years ago)

Author:

alain

Message:

1/ Fix a bug in the Multithreaded "sort" applicationr:
The pthread_create() arguments must be declared as global variables.
2/ The exit syscall can be called by any thread of a process..

File:

• trunk/kernel/syscalls/sys_stat.c (modified) (3 diffs)

trunk/kernel/syscalls/sys_stat.c

@@ -2 +2 @@
  * sys_stat.c - Return statistics on a file or directory.
  * 
- * Author    Alain Greiner  (2016,2017)
+ * Author    Alain Greiner  (2016,2017,2018)
  *
  * Copyright (c) UPMC Sorbonne Universites
@@ -37 +37 @@
 {
     error_t       error;
-    paddr_t       paddr;
+    vseg_t      * vseg;         // for user space checking
     struct stat   k_stat;       // kernel space 
     xptr_t        file_xp;
@@ -46 +46 @@
 
     // check stat structure in user space
-    error = vmm_v2p_translate( false , u_stat , &paddr );
+    error = vmm_get_vseg( process , (intptr_t)u_stat , &vseg );
 
         if( error )
         {
-        printk("\n[ERROR] in %s : stat structure unmapped  for thread %x in process %x\n",
-               __FUNCTION__ , this->trdid , process->pid );
+
+#if DEBUG_SYCALL_ERROR
+printk("\n[ERROR] in %s : stat structure unmapped %x / thread %x / process %x\n",
+__FUNCTION__ , (intptr_t)u_stat , this->trdid , process->pid );
+vmm_display( process , false );
+#endif
                 this->errno = EINVAL;
                 return -1;