[PATCH v4] modules_install: make missing $DEPMOD a Warning instead of an Error

[PATCH v4] modules_install: make missing $DEPMOD a Warning instead of an Error

[Randy Dunlap]

From: Randy Dunlap <rdunlap@infradead.org>

When $DEPMOD is not found, only print a warning instead of exiting
with an error message and error status:

Warning: 'make modules_install' requires /sbin/depmod. Please install it.
This is probably in the kmod package.

Change the Error to a Warning because "not all build hosts for cross
compiling Linux are Linux systems and are able to provide a working
port of depmod, especially at the file patch /sbin/depmod."

I.e., "make modules_install" may be used to copy/install the
loadable modules files to a target directory on a build system and
then transferred to an embedded device where /sbin/depmod is run
instead of it being run on the build system.

Fixes: 934193a654c1 ("kbuild: verify that $DEPMOD is installed")

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: H. Nikolaus Schaller <hns@goldelico.com>
Cc: stable@vger.kernel.org
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Lucas De Marchi <lucas.de.marchi@gmail.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Chih-Wei Huang <cwhuang@linux.org.tw>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
---
v2: add missing "exit 0" and update the commit message (no Error).
v3: add Fixes: and Cc: stable
v4: add Reported-by: and more explanation for the patch.

 scripts/depmod.sh |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- lnx-418.orig/scripts/depmod.sh
+++ lnx-418/scripts/depmod.sh
@@ -15,9 +15,9 @@ if ! test -r System.map ; then
 fi
 
 if [ -z $(command -v $DEPMOD) ]; then
-	echo "'make modules_install' requires $DEPMOD. Please install it." >&2
+	echo "Warning: 'make modules_install' requires $DEPMOD. Please install it." >&2
 	echo "This is probably in the kmod package." >&2
-	exit 1
+	exit 0
 fi
 
 # older versions of depmod require the version string to start with three

Re: [PATCH v4] modules_install: make missing $DEPMOD a Warning instead of an Error

[Masahiro Yamada]

2018-08-29 4:59 GMT+09:00 Randy Dunlap <rdunlap@infradead.org>:
> From: Randy Dunlap <rdunlap@infradead.org>
>
> When $DEPMOD is not found, only print a warning instead of exiting
> with an error message and error status:
>
> Warning: 'make modules_install' requires /sbin/depmod. Please install it.
> This is probably in the kmod package.
>
> Change the Error to a Warning because "not all build hosts for cross
> compiling Linux are Linux systems and are able to provide a working
> port of depmod, especially at the file patch /sbin/depmod."
>
> I.e., "make modules_install" may be used to copy/install the
> loadable modules files to a target directory on a build system and
> then transferred to an embedded device where /sbin/depmod is run
> instead of it being run on the build system.
>
> Fixes: 934193a654c1 ("kbuild: verify that $DEPMOD is installed")
>
> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
> Reported-by: H. Nikolaus Schaller <hns@goldelico.com>
> Cc: stable@vger.kernel.org
> Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
> Cc: Lucas De Marchi <lucas.de.marchi@gmail.com>
> Cc: Michal Marek <michal.lkml@markovi.net>
> Cc: Jessica Yu <jeyu@kernel.org>
> Cc: Chih-Wei Huang <cwhuang@linux.org.tw>
> Cc: H. Nikolaus Schaller <hns@goldelico.com>
> ---


Applied to linux-kbuild/fixes.  Thanks!


> v2: add missing "exit 0" and update the commit message (no Error).
> v3: add Fixes: and Cc: stable
> v4: add Reported-by: and more explanation for the patch.
>
>  scripts/depmod.sh |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> --- lnx-418.orig/scripts/depmod.sh
> +++ lnx-418/scripts/depmod.sh
> @@ -15,9 +15,9 @@ if ! test -r System.map ; then
>  fi
>
>  if [ -z $(command -v $DEPMOD) ]; then
> -       echo "'make modules_install' requires $DEPMOD. Please install it." >&2
> +       echo "Warning: 'make modules_install' requires $DEPMOD. Please install it." >&2
>         echo "This is probably in the kmod package." >&2
> -       exit 1
> +       exit 0
>  fi
>
>  # older versions of depmod require the version string to start with three
>
>



-- 
Best Regards
Masahiro Yamada