linux-hardening - [PATCH v8 05/10] init: export linux

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Date: Wed, 31 Jan 2024 16:38:32 +0530
From: Mukesh Ojha <quic_mojha@...cinc.com>
To: <corbet@....net>, <andersson@...nel.org>, <konrad.dybcio@...aro.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <keescook@...omium.org>, <tony.luck@...el.com>,
        <gpiccoli@...lia.com>, <mathieu.poirier@...aro.org>, <vigneshr@...com>,
        <nm@...com>, <matthias.bgg@...il.com>, <kgene@...nel.org>,
        <alim.akhtar@...sung.com>, <bmasney@...hat.com>
CC: <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>, <kernel@...cinc.com>,
        <quic_mojha@...cinc.com>
Subject: [PATCH v8 05/10] init: export linux_banner data variable

Some debug loadable module like minidump is interested in knowing
the kernel version against which it is being build. Let's export
linux_banner.

Signed-off-by: Mukesh Ojha <quic_mojha@...cinc.com>
---
 include/linux/init.h     | 3 +++
 init/version-timestamp.c | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/include/linux/init.h b/include/linux/init.h
index 58cef4c2e59a..d3d96188551c 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -145,6 +145,9 @@ extern char *saved_command_line;
 extern unsigned int saved_command_line_len;
 extern unsigned int reset_devices;
 
+/* Defined in init/version-timestamp.c */
+extern const char linux_banner[];
+
 /* used by init/main.c */
 void setup_arch(char **);
 void prepare_namespace(void);
diff --git a/init/version-timestamp.c b/init/version-timestamp.c
index 043cbf80a766..a48f2c19e5d7 100644
--- a/init/version-timestamp.c
+++ b/init/version-timestamp.c
@@ -6,6 +6,7 @@
 #include <linux/refcount.h>
 #include <linux/uts.h>
 #include <linux/utsname.h>
+#include <linux/init.h>
 
 struct uts_namespace init_uts_ns = {
 	.ns.count = REFCOUNT_INIT(2),
@@ -28,3 +29,4 @@ struct uts_namespace init_uts_ns = {
 const char linux_banner[] =
 	"Linux version " UTS_RELEASE " (" LINUX_COMPILE_BY "@"
 	LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";
+EXPORT_SYMBOL_GPL(linux_banner);
-- 
2.43.0.254.ga26002b62827