Re: [PATCH] ARM: i.MX: HAB: Allow for semicolons in HAB environment variables

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On 1/16/25 2:50 PM, Ahmad Fatoum wrote:
On 16.01.25 12:26, Bastian Krause wrote:
On 1/16/25 12:12 PM, Ahmad Fatoum wrote:
On 16.01.25 10:38, Sascha Hauer wrote:
With CONFIG_HAB_CERTS_ENV=y, paths and PKCS#11 URIs to the HAB
certificates are taken from environment variables (allowing for better
integration with build systems). In this case these values are passed
internally via compiler macros (-D) to the imx-image host tool. PKCS#11
URIs usually contain semicolons. The semicolons didn't make it through
to the imx-image configuration file due to wrong escapes. Fix this by
expanding the environment variables using make rather than shell.

Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
   scripts/Makefile.lib | 2 +-
   1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index f195ddb7e8..7dcd8c9892 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -579,7 +579,7 @@ cmd_imximage_S_dcd=                        \
   overwrite-hab-env = $(shell set -e; \
         test -n "$(CONFIG_HAB_CERTS_ENV)"; \
         test -n "$$$(1)"; \
-      echo -D$(1)=\\\"$(shell echo $$$(1))\\\")
+      echo -D$(1)=\''"${${1}}"'\')

Does {} and () make a difference here?

I don't think so. This also works:

-      echo -D$(1)=\''"${${1}}"'\')
+      echo -D$(1)=\''"$($(1))"'\')

Thanks for testing. @Sascha, can you switch to using () instead?
Otherwise it's confusing to have $(1) on the left-hand side,
but ${1} on the right.

Makes sense.


(My personal favorite would be -D$(1)=$(call stringify,$($(1))) FWIW,
provided that it works as intended)

Unfortunately..

-      echo -D$(1)=\''"${${1}}"'\')
+      echo -D$(1)=$(call stringify,$($(1))))

..does not work if the value contains a semicolon.

Regards,
Bastian


Thanks,
Ahmad


Bastian


     overwrite-fit-env = $(shell set -e; \
         test -n "$(CONFIG_BOOTM_FITIMAGE_PUBKEY_ENV)"; \








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