[PATCH v3 18/22] kexec: replace call to copy_file_from_fd() with kernel version

[Luis R. Rodriguez]

On Wed, Feb 03, 2016 at 02:06:26PM -0500, Mimi Zohar wrote:
> Replace copy_file_from_fd() with kernel_read_file_from_fd().
> 
> Two new identifiers named READING_KEXEC_IMAGE and READING_KEXEC_INITRAMFS
> are defined for measuring, appraising or auditing the kexec image and
> initramfs.
> 
> Changelog v3:
> - return -EBADF, not -ENOEXEC
> - identifier change
> - moved copy_file_from_fd() to a separate patch
> - defer support for IMA
> v1:
> - re-order and squash the kexec patches
> v0: ima: measure and appraise kexec image and initramfs (squashed)
> - rename ima_read_hooks enumeration to ima_policy_id
> - use kstat file size type loff_t, not size_t
> - add union name "hooks" to fix sparse warning
> - Calculate the file hash from the in memory buffer
> (suggested by Dave Young)
> - Rename ima_read_and_process_file() to ima_hash_and_process_file()
> - replace individual case statements with range:
>         KEXEC_CHECK ... IMA_MAX_READ_CHECK - 1
> - Instead of ima_read_and_process_file() allocating memory, the caller
> allocates and frees the memory.
> - Moved the kexec measurement/appraisal call to copy_file_from_fd(). The
> same call now measures and appraises both the kexec image and initramfs.
> 
> Signed-off-by: Mimi Zohar <zohar at linux.vnet.ibm.com>

Acked-by: Luis R. Rodriguez <mcgrof at kernel.org>

  Luis