[PATCH 1/2] maint: fix ioctls_sym.sh premature termination

[Gleb Fotengauer-Malinovskiy]

When the list of headers do not fit into the command line, xargs splits
it into several lists and then passes them to grep.  If no headers from
a list match the grep pattern, grep exits with a non-zero code that causes
xargs to exit with a non-zero code, too.

* maint/ioctls_sym.sh: Use find's -exec instead of xargs;
Ignore it's exit code.
---
 maint/ioctls_sym.sh | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/maint/ioctls_sym.sh b/maint/ioctls_sym.sh
index d9551b7..1d50850 100755
--- a/maint/ioctls_sym.sh
+++ b/maint/ioctls_sym.sh
@@ -75,9 +75,10 @@ tmpdir="$(mktemp -dt "$me.XXXXXX")"
 # list interesting files in $inc_dir.
 cd "$inc_dir"
 inc_dir="$(pwd -P)"
-find . -type f -name '*.h' -print0 |
-	xargs -r0 grep -l "$r_value" -- > "$tmpdir"/headers1.list ||
-		exit 0
+find . -type f -name '*.h' -exec grep -l "$r_value" -- '{}' + \
+	> "$tmpdir"/headers1.list ||:
+[ -s "$tmpdir"/headers1.list ] || exit 0
+
 cd - > /dev/null
 sed 's|^\./\(uapi/\)\?||' < "$tmpdir"/headers1.list > "$tmpdir"/headers.list
 LC_COLLATE=C sort -u -o "$tmpdir"/headers.list "$tmpdir"/headers.list

-- 
glebfm