Re: [PATCH 4/4] scripts/nsdeps: make sure to pass all module source files to spatch

Masahiro Yamada
2019-10-29T12:58:26Z

On Tue, Oct 29, 2019 at 12:14 AM Jessica Yu <jeyu@kernel.org> wrote:
>
> The nsdeps script passes a list of the module source files to
> generate_deps_for_ns() as a space delimited string named $mod_source_files,
> which then passes it to spatch. But since $mod_source_files is not encased
> in quotes, each source file in that string is treated as a separate shell
> function argument (as $2, $3, $4, etc.). However, the spatch invocation
> only refers to $2, so only the first file out of $mod_source_files is
> processed by spatch.
>
> This causes problems (namely, the MODULE_IMPORT_NS() statement doesn't
> get inserted) when a module is composed of many source files and the
> "main" module file containing the MODULE_LICENSE() statement is not the
> first file listed in $mod_source_files. Fix this by encasing
> $mod_source_files in quotes so that the entirety of the string is
> treated as a single argument and can be referred to as $2.
>
> Signed-off-by: Jessica Yu <jeyu@kernel.org>
> ---
> scripts/nsdeps | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/nsdeps b/scripts/nsdeps
> index 9ddcd5cb96b1..5055b059a81b 100644
> --- a/scripts/nsdeps
> +++ b/scripts/nsdeps
> @@ -36,7 +36,7 @@ generate_deps() {
> | sed -E "s%(^|\s)([^/][^ ]*)%\1$srctree/\2%g"`
> for ns in `cat $ns_deps_file`; do
> echo "Adding namespace $ns to module $mod_name (if needed)."
> - generate_deps_for_ns $ns $mod_source_files
> + generate_deps_for_ns $ns "$mod_source_files"
> # sort the imports
> for source_file in $mod_source_files; do
> sed '/MODULE_IMPORT_NS/Q' $source_file > ${source_file}.tmp

I think this change is correct, but
did you succeed in nsdeps for composite modules
with this patch only?

I think the following is needed too:

diff --git a/scripts/nsdeps b/scripts/nsdeps
index dda6fbac016e..5a23ea616446 100644
--- a/scripts/nsdeps
+++ b/scripts/nsdeps
@@ -31,9 +31,9 @@ generate_deps() {
local mod_file=`echo $@ | sed -e 's/\.ko/\.mod/'`
local ns_deps_file=`echo $@ | sed -e 's/\.ko/\.ns_deps/'`
if [ ! -f "$ns_deps_file" ]; then return; fi
- local mod_source_files=`cat $mod_file | sed -n 1p \
+ local mod_source_files="`cat $mod_file | sed -n 1p
\
| sed -e 's/\.o/\.c/g' \
- | sed "s|[^ ]* *|${srctree}/&|g"`
+ | sed "s|[^ ]* *|${srctree}/&|g"`"
for ns in `cat $ns_deps_file`; do
echo "Adding namespace $ns to module $mod_name (if needed)."
generate_deps_for_ns $ns $mod_source_files

Without this, a module that consists of two files
will be expanded to:

local mod_source_files=source1.c source2.c