[PATCH v2 0/3] grub: add grub variable extend functionality

[Prarit Bhargava]

This patchset allows a user to update an existing grub variable on the
commandline.

v2:  
- Split into 3 patches.
        - fix "=value" bug.  An additional consequence of this is that the
          value pointer p in set_variable() cannot underflow.
        - make grub_envblk_iterate return an int and fix return values.
        - add "+=" functionality
- Changes suggested by David Kiper: Change name to grub_envblk_extend(),
capitalize comments, use standard GRUB error enum, change goto from
"out" to "err", drop cast in grub_strlen() call, use grub_snprintf()
instead of strcpy & memcpy.
- Instead of parsing envblk separately, use grub_envblk_iterate()
- use a case statement in set_variable() error handling, and add a comment
about deleting the "=" sign.

Signed-off-by: Prarit Bhargava <address@hidden>
Cc: address@hidden
Cc: address@hidden
Cc: address@hidden
Cc: address@hidden
Cc: Daniel Kiper <address@hidden>

Prarit Bhargava (3):
  grub-editenv: Verify the variable size
  grub: Make grub_envblk_iterate() return an int
  grub: add extend variable functionality

 grub-core/commands/loadenv.c |  6 +--
 grub-core/lib/envblk.c       | 17 ++++---
 include/grub/err.h           |  4 +-
 include/grub/lib/envblk.h    |  6 +--
 util/grub-editenv.c          | 86 ++++++++++++++++++++++++++++++++++--
 5 files changed, 100 insertions(+), 19 deletions(-)

-- 
2.17.2