vserver 1.9.3

[linux-2.6.git] / arch / x86_64 / ia32 / ia32_binfmt.c

diff --git a/arch/x86_64/ia32/ia32_binfmt.c b/arch/x86_64/ia32/ia32_binfmt.c
index 92817f1..0992f59 100644 (file)
--- a/arch/x86_64/ia32/ia32_binfmt.c
+++ b/arch/x86_64/ia32/ia32_binfmt.c
@@ -301,6 +301,9 @@ MODULE_AUTHOR("Eric Youngdale, Andi Kleen");
 
 #define elf_addr_t __u32
 
+#undef TASK_SIZE
+#define TASK_SIZE 0xffffffff
+
 static void elf32_init(struct pt_regs *);
 
 #include "../../../fs/binfmt_elf.c" 
@@ -327,7 +330,7 @@ static void elf32_init(struct pt_regs *regs)
 
 int setup_arg_pages(struct linux_binprm *bprm, int executable_stack)
 {
-       unsigned long stack_base;
+       unsigned long stack_base, grow;
        struct vm_area_struct *mpnt;
        struct mm_struct *mm = current->mm;
        int i;
@@ -344,11 +347,16 @@ int setup_arg_pages(struct linux_binprm *bprm, int executable_stack)
        if (!mpnt) 
                return -ENOMEM; 
        
-       if (security_vm_enough_memory((IA32_STACK_TOP - (PAGE_MASK & (unsigned long) bprm->p))>>PAGE_SHIFT)) {
+       grow = (IA32_STACK_TOP - (PAGE_MASK & (unsigned long) bprm->p))
+               >> PAGE_SHIFT;
+       if (security_vm_enough_memory(grow) ||
+               !vx_vmpages_avail(mm, grow)) {
                kmem_cache_free(vm_area_cachep, mpnt);
                return -ENOMEM;
        }
 
+       memset(mpnt, 0, sizeof(*mpnt));
+
        down_write(&mm->mmap_sem);
        {
                mpnt->vm_mm = mm;
@@ -362,20 +370,17 @@ int setup_arg_pages(struct linux_binprm *bprm, int executable_stack)
                        mpnt->vm_flags = vm_stack_flags32;
                mpnt->vm_page_prot = (mpnt->vm_flags & VM_EXEC) ? 
                        PAGE_COPY_EXEC : PAGE_COPY;
-               mpnt->vm_ops = NULL;
-               mpnt->vm_pgoff = 0;
-               mpnt->vm_file = NULL;
-               INIT_LIST_HEAD(&mpnt->shared);
-               mpnt->vm_private_data = (void *) 0;
                insert_vm_struct(mm, mpnt);
-               mm->total_vm = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT;
+               // mm->stack_vm = mm->total_vm = vma_pages(mpnt);
+               vx_vmpages_sub(mm, mm->total_vm - vma_pages(mpnt));
+               mm->stack_vm = mm->total_vm;
        } 
 
        for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
                struct page *page = bprm->page[i];
                if (page) {
                        bprm->page[i] = NULL;
-                       put_dirty_page(current,page,stack_base,mpnt->vm_page_prot);
+                       install_arg_page(mpnt, page, stack_base);
                }
                stack_base += PAGE_SIZE;
        }