bin2c: move bin2c in scripts/basic
This patch series does not do kernel signature verification yet. I plan
to post another patch series for that. Now distributions are already
signing PE/COFF bzImage with PKCS7 signature I plan to parse and verify
those signatures.
Primary goal of this patchset is to prepare groundwork so that kernel
image can be signed and signatures be verified during kexec load. This
should help with two things.
- It should allow kexec/kdump on secureboot enabled machines.
- In general it can help even without secureboot. By being able to verify
kernel image signature in kexec, it should help with avoiding module
signing restrictions. Matthew Garret showed how to boot into a custom
kernel, modify first kernel's memory and then jump back to old kernel and
bypass any policy one wants to.
This patch (of 15):
Kexec wants to use bin2c and it wants to use it really early in the build
process. See arch/x86/purgatory/ code in later patches.
So move bin2c in scripts/basic so that it can be built very early and
be usable by arch/x86/purgatory/
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: WANG Chao <chaowang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/Makefile b/kernel/Makefile
index 0026cf5..dc5c775 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -105,7 +105,7 @@
$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
$(call if_changed,gzip)
- filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
+ filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/basic/bin2c; echo "MAGIC_END;")
targets += config_data.h
$(obj)/config_data.h: $(obj)/config_data.gz FORCE
$(call filechk,ikconfiggz)
diff --git a/scripts/.gitignore b/scripts/.gitignore
index fb070fa..5ecfe93 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -4,7 +4,6 @@
conmakehash
kallsyms
pnmtologo
-bin2c
unifdef
ihex2fw
recordmcount
diff --git a/scripts/Makefile b/scripts/Makefile
index 890df5c..72902b5 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -13,7 +13,6 @@
hostprogs-$(CONFIG_KALLSYMS) += kallsyms
hostprogs-$(CONFIG_LOGO) += pnmtologo
hostprogs-$(CONFIG_VT) += conmakehash
-hostprogs-$(CONFIG_IKCONFIG) += bin2c
hostprogs-$(BUILD_C_RECORDMCOUNT) += recordmcount
hostprogs-$(CONFIG_BUILDTIME_EXTABLE_SORT) += sortextable
hostprogs-$(CONFIG_ASN1) += asn1_compiler
diff --git a/scripts/basic/.gitignore b/scripts/basic/.gitignore
index a776371..9528ec9 100644
--- a/scripts/basic/.gitignore
+++ b/scripts/basic/.gitignore
@@ -1 +1,2 @@
fixdep
+bin2c
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
index 4fcef87..afbc1cd6 100644
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@@ -9,6 +9,7 @@
# fixdep: Used to generate dependency information during build process
hostprogs-y := fixdep
+hostprogs-$(CONFIG_IKCONFIG) += bin2c
always := $(hostprogs-y)
# fixdep is needed to compile other host programs
diff --git a/scripts/bin2c.c b/scripts/basic/bin2c.c
similarity index 88%
rename from scripts/bin2c.c
rename to scripts/basic/bin2c.c
index 96dd2bc..af187e6 100644
--- a/scripts/bin2c.c
+++ b/scripts/basic/bin2c.c
@@ -11,7 +11,7 @@
int main(int argc, char *argv[])
{
- int ch, total=0;
+ int ch, total = 0;
if (argc > 1)
printf("const char %s[] %s=\n",
@@ -19,10 +19,9 @@
do {
printf("\t\"");
- while ((ch = getchar()) != EOF)
- {
+ while ((ch = getchar()) != EOF) {
total++;
- printf("\\x%02x",ch);
+ printf("\\x%02x", ch);
if (total % 16 == 0)
break;
}