[Buildroot] [PATCH 1/7] package/skeleton-init-common: add /bin/sh to /etc/shells

[Yann E. MORIN <yann.morin.1998@free.fr>]

On 2018-01-14 22:03 +0100, Romain Naour spake thusly:
> Add the default shell /bin/sh to /etc/shells only if BR2_SYSTEM_BIN_SH_NONE
> is not selected.
> 
> Add an empty /etc/shells in the rootfs skeleton.
> 
> Signed-off-by: Romain Naour <romain.naour@smile.fr>
> ---
>  package/skeleton-init-common/skeleton-init-common.mk | 7 +++++++
>  system/skeleton/etc/shells                           | 1 +
>  2 files changed, 8 insertions(+)
>  create mode 100644 system/skeleton/etc/shells
> 
> diff --git a/package/skeleton-init-common/skeleton-init-common.mk b/package/skeleton-init-common/skeleton-init-common.mk
> index 8228a81..707f1aa 100644
> --- a/package/skeleton-init-common/skeleton-init-common.mk
> +++ b/package/skeleton-init-common/skeleton-init-common.mk
> @@ -79,6 +79,12 @@ define SKELETON_INIT_COMMON_SET_BIN_SH
>  	rm -f $(TARGET_DIR)/bin/sh
>  endef
>  else
> +# Add /bin/sh to /etc/shells otherwise some login tools like dropbear
> +# can reject the user connexion. See man shells.
> +define SKELETON_INIT_COMMON_ADD_SH_TO_SHELLS
> +	grep -qsE '^/bin/sh' $(TARGET_DIR)/etc/shells \
> +		|| echo "/bin/sh" >> $(TARGET_DIR)/etc/shells
> +endef
>  ifneq ($(SKELETON_INIT_COMMON_BIN_SH),)
>  define SKELETON_INIT_COMMON_SET_BIN_SH
>  	ln -sf $(SKELETON_INIT_COMMON_BIN_SH) $(TARGET_DIR)/bin/sh
> @@ -86,5 +92,6 @@ endef
>  endif
>  endif
>  SKELETON_INIT_COMMON_TARGET_FINALIZE_HOOKS += SKELETON_INIT_COMMON_SET_BIN_SH
> +SKELETON_INIT_COMMON_POST_INSTALL_TARGET_HOOKS += SKELETON_INIT_COMMON_ADD_SH_TO_SHELLS

Rgister your new hook right after it's defined.

The existing one is registered after the if-block, becasue it is the
same hook-name for the two cases of the condition, b ut your new hook is
only defined in the else case, so register it there.

Regards,
Yann E. MORIN.

>  $(eval $(generic-package))
> diff --git a/system/skeleton/etc/shells b/system/skeleton/etc/shells
> new file mode 100644
> index 0000000..b5fd584
> --- /dev/null
> +++ b/system/skeleton/etc/shells
> @@ -0,0 +1 @@
> +# /etc/shells: valid login shells
> -- 
> 2.7.4
> 
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> http://lists.busybox.net/mailman/listinfo/buildroot

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