[Buildroot] [PATCH 2/2] Add option to copy config file to rootfs

[Buildroot] [PATCH 2/2] Add option to copy config file to rootfs

[Nathaniel Roach]

BR2_CONFIG_COPY copies the config file to /etc/buildroot.config
as 0600 during target-finalize after overlay copy, but before
post-build script install.

Signed-off-by: Nathaniel Roach <nroach44@gmail.com>
---
 Makefile         |  4 ++++
 system/Config.in | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/Makefile b/Makefile
index 022beea..cc49291 100644
--- a/Makefile
+++ b/Makefile
@@ -614,6 +614,10 @@ endif
 			--chmod=Du+w --exclude .empty --exclude '*~' \
 			$(d)/ $(TARGET_DIR)$(sep))
 
+ifeq ($(BR2_CONFIG_COPY),y)
+	$(INSTALL) -m 0600 .config $(TARGET_DIR)/etc/buildroot.config
+endif
+
 	@$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
 		$(call MESSAGE,"Executing post-build script $(s)"); \
 		$(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
diff --git a/system/Config.in b/system/Config.in
index e7e146a..94fb744 100644
--- a/system/Config.in
+++ b/system/Config.in
@@ -328,6 +328,17 @@ config BR2_ROOTFS_USERS_TABLES
 
 	  See manual for details on the usage and syntax of these files.
 
+config BR2_CONFIG_COPY
+	bool "Copy buildroot .config file to rootfs"
+	help
+	  Copies the .config file used to build the rootfs into the
+	  rootfs. This may be useful for debugging.
+
+	  It will be put in /etc/buildroot.config with a mode of 0600
+
+	  However, be wary that it will contain the root password
+	  (if set) and other possibly sensitive data.
+
 config BR2_ROOTFS_OVERLAY
 	string "Root filesystem overlay directories"
 	default ""
-- 
2.0.1

[Buildroot] [PATCH 2/2] Add option to copy config file to rootfs

[Thomas De Schampheleire]

Hi Nathaniel,

On Thu, Jul 31, 2014 at 3:46 PM, Nathaniel Roach <nroach44@gmail.com> wrote:
> BR2_CONFIG_COPY copies the config file to /etc/buildroot.config
> as 0600 during target-finalize after overlay copy, but before
> post-build script install.
>
> Signed-off-by: Nathaniel Roach <nroach44@gmail.com>

Your subject says 2/2 but I only see 1 patch?

> ---
>  Makefile         |  4 ++++
>  system/Config.in | 11 +++++++++++
>  2 files changed, 15 insertions(+)
>
> diff --git a/Makefile b/Makefile
> index 022beea..cc49291 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -614,6 +614,10 @@ endif
>                         --chmod=Du+w --exclude .empty --exclude '*~' \
>                         $(d)/ $(TARGET_DIR)$(sep))
>
> +ifeq ($(BR2_CONFIG_COPY),y)
> +       $(INSTALL) -m 0600 .config $(TARGET_DIR)/etc/buildroot.config
> +endif
> +
>         @$(foreach s, $(call qstrip,$(BR2_ROOTFS_POST_BUILD_SCRIPT)), \
>                 $(call MESSAGE,"Executing post-build script $(s)"); \
>                 $(EXTRA_ENV) $(s) $(TARGET_DIR) $(call qstrip,$(BR2_ROOTFS_POST_SCRIPT_ARGS))$(sep))
> diff --git a/system/Config.in b/system/Config.in
> index e7e146a..94fb744 100644
> --- a/system/Config.in
> +++ b/system/Config.in
> @@ -328,6 +328,17 @@ config BR2_ROOTFS_USERS_TABLES
>
>           See manual for details on the usage and syntax of these files.
>
> +config BR2_CONFIG_COPY
> +       bool "Copy buildroot .config file to rootfs"
> +       help
> +         Copies the .config file used to build the rootfs into the

'to build the rootfs' is not fully accurate as it was also used to
build the kernel, bootloader and what not.
So maybe 'to build the system' or simply 'Copies the buildroot .config
file into ...'

> +         rootfs. This may be useful for debugging.
> +
> +         It will be put in /etc/buildroot.config with a mode of 0600
> +
> +         However, be wary that it will contain the root password
> +         (if set) and other possibly sensitive data.
> +
>  config BR2_ROOTFS_OVERLAY
>         string "Root filesystem overlay directories"
>         default ""


Best regards,
Thomas