Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / arch / x86_64 / ia32 / syscall32.c

diff --git a/arch/x86_64/ia32/syscall32.c b/arch/x86_64/ia32/syscall32.c
index 01d8db1..029a5c1 100644 (file)
--- a/arch/x86_64/ia32/syscall32.c
+++ b/arch/x86_64/ia32/syscall32.c
@@ -10,20 +10,11 @@
 #include <linux/init.h>
 #include <linux/stringify.h>
 #include <linux/security.h>
+#include <linux/vs_memory.h>
 #include <asm/proto.h>
 #include <asm/tlbflush.h>
 #include <asm/ia32_unistd.h>
 
-/* 32bit VDSOs mapped into user space. */ 
-asm(".section \".init.data\",\"aw\"\n"
-    "syscall32_syscall:\n"
-    ".incbin \"arch/x86_64/ia32/vsyscall-syscall.so\"\n"
-    "syscall32_syscall_end:\n"
-    "syscall32_sysenter:\n"
-    ".incbin \"arch/x86_64/ia32/vsyscall-sysenter.so\"\n"
-    "syscall32_sysenter_end:\n"
-    ".previous");
-
 extern unsigned char syscall32_syscall[], syscall32_syscall_end[];
 extern unsigned char syscall32_sysenter[], syscall32_sysenter_end[];
 extern int sysctl_vsyscall32;
@@ -52,34 +43,37 @@ static struct vm_operations_struct syscall32_vm_ops = {
 struct linux_binprm;
 
 /* Setup a VMA at program startup for the vsyscall page */
-int syscall32_setup_pages(struct linux_binprm *bprm, int exstack)
+int syscall32_setup_pages(struct linux_binprm *bprm, int exstack,
+                         unsigned long start_code,
+                         unsigned long interp_map_address)
 {
        int npages = (VSYSCALL32_END - VSYSCALL32_BASE) >> PAGE_SHIFT;
        struct vm_area_struct *vma;
        struct mm_struct *mm = current->mm;
+       int ret;
 
        vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
        if (!vma)
                return -ENOMEM;
-       if (security_vm_enough_memory(npages)) {
-               kmem_cache_free(vm_area_cachep, vma);
-               return -ENOMEM;
-       }
 
        memset(vma, 0, sizeof(struct vm_area_struct));
        /* Could randomize here */
        vma->vm_start = VSYSCALL32_BASE;
        vma->vm_end = VSYSCALL32_END;
        /* MAYWRITE to allow gdb to COW and set breakpoints */
-       vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYEXEC|VM_MAYWRITE;
+       vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
        vma->vm_flags |= mm->def_flags;
        vma->vm_page_prot = protection_map[vma->vm_flags & 7];
        vma->vm_ops = &syscall32_vm_ops;
        vma->vm_mm = mm;
 
        down_write(&mm->mmap_sem);
-       insert_vm_struct(mm, vma);
-       mm->total_vm += npages;
+       if ((ret = insert_vm_struct(mm, vma))) {
+               up_write(&mm->mmap_sem);
+               kmem_cache_free(vm_area_cachep, vma);
+               return ret;
+       }
+       vx_vmpages_add(mm, npages);
        up_write(&mm->mmap_sem);
        return 0;
 }