[PATCH bpf-next v3 04/10] selftests/bpf: Limit URLS parsing logic to actual scope in vmtest

[Pu Lehui]

From: Pu Lehui <pulehui at huawei.com>

The URLS array is only valid in the download_rootfs function and does
not need to be parsed globally in advance. At the same time, the logic
of loading rootfs is refactored to prepare vmtest for supporting local
rootfs.

Signed-off-by: Pu Lehui <pulehui at huawei.com>
---
 tools/testing/selftests/bpf/vmtest.sh | 39 +++++++++++++--------------
 1 file changed, 19 insertions(+), 20 deletions(-)

diff --git a/tools/testing/selftests/bpf/vmtest.sh b/tools/testing/selftests/bpf/vmtest.sh
index 65d14f3bbe30..87d93f29c565 100755
--- a/tools/testing/selftests/bpf/vmtest.sh
+++ b/tools/testing/selftests/bpf/vmtest.sh
@@ -92,19 +92,6 @@ populate_url_map()
 	fi
 }
 
-download()
-{
-	local file="$1"
-
-	if [[ ! -v URLS[$file] ]]; then
-		echo "$file not found" >&2
-		return 1
-	fi
-
-	echo "Downloading $file..." >&2
-	curl -Lsf "${URLS[$file]}" "${@:2}"
-}
-
 newest_rootfs_version()
 {
 	{
@@ -118,16 +105,30 @@ newest_rootfs_version()
 
 download_rootfs()
 {
-	local rootfsversion="$1"
-	local dir="$2"
+	populate_url_map
+
+	local rootfsversion="$(newest_rootfs_version)"
+	local file="${ARCH}/libbpf-vmtest-rootfs-$rootfsversion.tar.zst"
+
+	if [[ ! -v URLS[$file] ]]; then
+		echo "$file not found" >&2
+		return 1
+	fi
+
+	echo "Downloading $file..." >&2
+	curl -Lsf "${URLS[$file]}" "${@:2}"
+}
+
+load_rootfs()
+{
+	local dir="$1"
 
 	if ! which zstd &> /dev/null; then
 		echo 'Could not find "zstd" on the system, please install zstd'
 		exit 1
 	fi
 
-	download "${ARCH}/libbpf-vmtest-rootfs-$rootfsversion.tar.zst" |
-		zstd -d | sudo tar -C "$dir" -x
+	download_rootfs | zstd -d | sudo tar -C "$dir" -x
 }
 
 recompile_kernel()
@@ -227,7 +228,7 @@ create_vm_image()
 	mkfs.ext4 -q "${rootfs_img}"
 
 	mount_image
-	download_rootfs "$(newest_rootfs_version)" "${mount_dir}"
+	load_rootfs "${mount_dir}"
 	unmount_image
 }
 
@@ -402,8 +403,6 @@ main()
 		make_command="${make_command} KBUILD_OUTPUT=${KBUILD_OUTPUT}"
 	fi
 
-	populate_url_map
-
 	local rootfs_img="${OUTPUT_DIR}/${ROOTFS_IMAGE}"
 	local mount_dir="${OUTPUT_DIR}/${MOUNT_DIR}"
 
-- 
2.34.1