rpm: fix rpm -Kv xxx.rpm failed if signature header is larger than 64KB

Since commits [Place file signatures into the signature header where they
belong][1] applied, run `rpm -Kv **.rpm' failed if signature header
is larger than 64KB. Here are steps:

1) A unsigned rpm package, the size is 227560 bytes
$ ls -al xz-src-5.2.5-r0.corei7_64.rpm
-rw-------. 1 mockbuild 1000 227560 Jun  3 09:59

2) Sign the rpm package
$ rpmsign --addsign ... xz-src-5.2.5-r0.corei7_64.rpm

3) The size of signed rpm is 312208 bytes
$ ls -al xz-src-5.2.5-r0.corei7_64.rpm
-rw-------. 1 mockbuild 1000 312208 Jun  3 09:48

4) Run `rpm -Kv' failed with signature hdr data out of range
$ rpm -Kv xz-src-5.2.5-r0.corei7_64.rpm
xz-src-5.2.5-r0.corei7_64.rpm:
error: xz-src-5.2.5-r0.corei7_64.rpm: signature hdr data: BAD, no. of
bytes(88864) out of range

>From 1) and 3), the size of signed rpm package increased
312208 - 227560 = 84648, so the check of dl_max (64KB,65536)
is not enough.

As [1] said:

    This also means the signature header can be MUCH bigger than ever
    before,so bump up the limit (to 64MB, arbitrary something for now)

So [1] missed to multiply by 1024.

[1] https://github.com/rpm-software-management/rpm/commit/f558e886050c4e98f6cdde391df679a411b3f62c

(From OE-Core rev: 8359bdd60afafd80d354f7f40ed648643d8db292)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/recipes-devtools/rpm/rpm_4.15.1.bb b/meta/recipes-devtools/rpm/rpm_4.15.1.bb
index 8add142461..cbe1acffe2 100644
--- a/meta/recipes-devtools/rpm/rpm_4.15.1.bb
+++ b/meta/recipes-devtools/rpm/rpm_4.15.1.bb
@@ -40,6 +40,7 @@ SRC_URI = "git://github.com/rpm-software-management/rpm;branch=rpm-4.15.x \
            file://0001-rpmplugins.c-call-dlerror-prior-to-dlsym.patch \
            file://0001-rpmfc.c-do-not-run-file-classification-in-parallel.patch \
            file://0001-lib-transaction.c-fix-file-conflicts-for-MIPS64-N32.patch \
+           file://0001-Bump-up-the-limit-of-signature-header-to-64MB.patch \
            "
 
 PE = "1"