On Fri, 23 Mar 2007 12:09:58 -0400 Mimi Zohar <[EMAIL PROTECTED]> wrote:
> mmaped files are hashed and hmac'ed properly by EVM after being modified
> when the file's mtime is updated correctly. Peter Staubach's 'memory
> mapped files not updating timestamps v2' patch properly updates the
> mmapped file's mtime. In those cases when an application does not
> first msync the file before calling munmap, the mtime is eventually
> updated, but not before file_close is called. This patch forces the
> mtime for mmaped files to be updated in a timely manner.
I don't think we've ever had that patch in -mm?
> signed-off-by: Mimi Zohar <[EMAIL PROTECTED]>
> ----
> Index: linux-2.6.21-rc4-mm1/mm/mmap.c
> ===================================================================
> --- linux-2.6.21-rc4-mm1.orig/mm/mmap.c
> +++ linux-2.6.21-rc4-mm1/mm/mmap.c
> @@ -1790,6 +1790,7 @@ int do_munmap(struct mm_struct *mm, unsi
> {
> unsigned long end;
> struct vm_area_struct *vma, *prev, *last;
> + struct file *file;
>
> if ((start & ~PAGE_MASK) || start > TASK_SIZE || len > TASK_SIZE-start)
> return -EINVAL;
> @@ -1808,6 +1809,10 @@ int do_munmap(struct mm_struct *mm, unsi
> if (vma->vm_start >= end)
> return 0;
>
> + file = vma->vm_file;
> + if (file && test_and_clear_bit(AS_MCTIME, &file->f_mapping->flags))
> + file_update_time(file);
> +
> /*
> * If we need to split any vma, do it now to save pain later.
> *
Hence this won't compile.
-
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