recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.2/0052-UBI-fix-nameless-volumes-handling.patch

   1 From addbb632cd11d02b5386a9ebf040b0f89b6e2c84 Mon Sep 17 00:00:00 2001
   2 From: Richard Weinberger <richard@nod.at>
   3 Date: Fri, 13 Jan 2012 15:07:40 +0100
   4 Subject: [PATCH 052/129] UBI: fix nameless volumes handling
   5
   6 commit 4a59c797a18917a5cf3ff7ade296b46134d91e6a upstream.
   7
   8 Currently it's possible to create a volume without a name. E.g:
   9 ubimkvol -n 32 -s 2MiB -t static /dev/ubi0 -N ""
  10
  11 After that vtbl_check() will always fail because it does not permit
  12 empty strings.
  13
  14 Signed-off-by: Richard Weinberger <richard@nod.at>
  15 Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  17 ---
  18  drivers/mtd/ubi/cdev.c |    3 +++
  19  1 file changed, 3 insertions(+)
  20
  21 diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
  22 index 3320a50..ad76592 100644
  23 --- a/drivers/mtd/ubi/cdev.c
  24 +++ b/drivers/mtd/ubi/cdev.c
  25 @@ -632,6 +632,9 @@ static int verify_mkvol_req(const struct ubi_device *ubi,
  26         if (req->alignment != 1 && n)
  27                 goto bad;
  28
  29 +       if (!req->name[0] || !req->name_len)
  30 +               goto bad;
  31 +
  32         if (req->name_len > UBI_VOL_NAME_MAX) {
  33                 err = -ENAMETOOLONG;
  34                 goto bad;
  35 --
  36 1.7.9.5
  37