[blktests,v3,4/6] common,tests: replace _have_driver() with _have_drivers()

Commit Message

Shin'ichiro Kawasaki Aug. 19, 2022, 9:39 a.m. UTC

The helper function _have_driver() checks single driver but it is often
required to check multiple drivers. Rename _have_driver() to
_have_drivers() and improve it to check multiple drivers. This makes its
usage consistent with _have_modules().

While at it, replace single brackets in _have_drivers() with double
brackets to have consistent bracket style as _have_modules().

Signed-off-by: Shin'ichiro Kawasaki <[e-mail]>
---
 common/null_blk |  2 +-
 common/rc       | 30 ++++++++++++++++++++----------
 tests/nbd/rc    |  2 +-
 tests/nvme/rc   | 12 +++++-------
 tests/scsi/rc   |  2 +-
 tests/zbd/009   |  2 +-
 tests/zbd/010   |  2 +-
 7 files changed, 30 insertions(+), 22 deletions(-)

Comments

Christoph Hellwig Aug. 21, 2022, 5:49 a.m. UTC | #1

I always found _have_modules rather strange as multiple lines to check
for one driver at a time seems more readable.

Shin'ichiro Kawasaki Aug. 22, 2022, 6:25 a.m. UTC | #2

On Aug 21, 2022 / 07:49, Christoph Hellwig wrote:
> I always found _have_modules rather strange as multiple lines to check
> for one driver at a time seems more readable. 

Okay, that will be a bit simpler. I'll drop this patch from the series. Instead,
will add a patch which will replace _have_modules with _have_module.

Patch

diff --git a/common/null_blk b/common/null_blk
index 52eb486..15bb35e 100644
--- a/common/null_blk
+++ b/common/null_blk
@@ -7,7 +7,7 @@ 
 . common/shellcheck
 
 _have_null_blk() {
-	_have_driver null_blk
+	_have_drivers null_blk
 }
 
 _remove_null_blk_devices() {
diff --git a/common/rc b/common/rc
index 8681a46..fdeda24 100644
--- a/common/rc
+++ b/common/rc
@@ -42,15 +42,25 @@  _module_file_exists()
 	return 1
 }
 
-# Check that the specified module or driver is available, regardless of whether
-# it is built-in or built separately as a module.
-_have_driver()
-{
-	local modname="${1//-/_}"
+# Check that the specified modules or drivers are available, regardless of
+# whether they are built-in or built separately as module files.
+_have_drivers() {
+	local missing=()
+	local driver modname
+
+	for driver in "$@"; do
+		modname=${driver//-/_}
+		if [[ ! -d "/sys/module/${modname}" ]] &&
+			   ! modprobe -qn "${modname}"; then
+			missing+=("$driver")
+		fi
+	done
 
-	if [ ! -d "/sys/module/${modname}" ] &&
-		   ! modprobe -qn "${modname}"; then
-		SKIP_REASONS+=("driver ${modname} is not available")
+	if [[ ${#missing} -gt 1 ]]; then
+		SKIP_REASONS+=("the following drivers are not available: ${missing[*]}")
+		return 1
+	elif [[ ${#missing} -eq 1 ]]; then
+		SKIP_REASONS+=("${missing[0]} driver is not available")
 		return 1
 	fi
 
@@ -98,7 +108,7 @@  _have_module_param_value() {
 	local expected_value="$3"
 	local value
 
-	if ! _have_driver "$modname"; then
+	if ! _have_drivers "$modname"; then
 		return 1;
 	fi
 
@@ -147,7 +157,7 @@  _have_src_program() {
 }
 
 _have_loop() {
-	_have_driver loop && _have_program losetup
+	_have_drivers loop && _have_program losetup
 }
 
 _have_blktrace() {
diff --git a/tests/nbd/rc b/tests/nbd/rc
index 32eea45..d3ec084 100644
--- a/tests/nbd/rc
+++ b/tests/nbd/rc
@@ -11,7 +11,7 @@  group_requires() {
 }
 
 _have_nbd() {
-	if ! _have_driver nbd; then
+	if ! _have_drivers nbd; then
 		return 1
 	fi
 	if ! _have_program nbd-server; then
diff --git a/tests/nvme/rc b/tests/nvme/rc
index ff13ea2..df13548 100644
--- a/tests/nvme/rc
+++ b/tests/nvme/rc
@@ -18,23 +18,21 @@  _nvme_requires() {
 	_have_program nvme
 	case ${nvme_trtype} in
 	loop)
-		_have_driver nvme-loop
+		_have_drivers nvme-loop
 		_have_configfs
 		;;
 	pci)
-		_have_driver nvme
+		_have_drivers nvme
 		;;
 	tcp)
-		_have_driver nvme-tcp
-		_have_driver nvmet-tcp
+		_have_drivers nvme-tcp nvmet-tcp
 		_have_configfs
 		;;
 	rdma)
-		_have_driver nvme-rdma
-		_have_driver nvmet-rdma
+		_have_drivers nvme-rdma nvmet-rdma
 		_have_configfs
 		_have_program rdma
-		_have_driver rdma_rxe || _have_driver siw
+		_have_drivers rdma_rxe || _have_drivers siw
 		;;
 	*)
 		SKIP_REASONS+=("unsupported nvme_trtype=${nvme_trtype}")
diff --git a/tests/scsi/rc b/tests/scsi/rc
index 3b4a33c..d9750c0 100644
--- a/tests/scsi/rc
+++ b/tests/scsi/rc
@@ -15,7 +15,7 @@  group_device_requires() {
 }
 
 _have_scsi_generic() {
-	_have_driver sg
+	_have_drivers sg
 }
 
 _require_test_dev_is_scsi() {
diff --git a/tests/zbd/009 b/tests/zbd/009
index 483cbf6..4d6a637 100755
--- a/tests/zbd/009
+++ b/tests/zbd/009
@@ -33,7 +33,7 @@  have_good_mkfs_btrfs() {
 
 requires() {
 	_have_fio
-	_have_driver btrfs
+	_have_drivers btrfs
 	_have_module_param scsi_debug zone_cap_mb
 	_have_program mkfs.btrfs
 	_have_scsi_debug
diff --git a/tests/zbd/010 b/tests/zbd/010
index 6d634b0..ef5e0fc 100644
--- a/tests/zbd/010
+++ b/tests/zbd/010
@@ -11,7 +11,7 @@  QUICK=1
 
 requires() {
 	_have_fio
-	_have_driver f2fs
+	_have_drivers f2fs
 	_have_modules null_blk
 	_have_module_param scsi_debug zone_cap_mb
 	_have_program mkfs.f2fs