[PATCH blktests 2/9] common: add a helper if a driver is available

From: Christoph Hellwig <hch@lst.de>
To: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Cc: linux-block@vger.kernel.org
Subject: [PATCH blktests 2/9] common: add a helper if a driver is available
Date: Mon, 30 May 2022 15:08:04 +0200	[thread overview]
Message-ID: <20220530130811.3006554-3-hch@lst.de> (raw)
In-Reply-To: <20220530130811.3006554-1-hch@lst.de>

Unlike _have_modules this allows allows for a built-in driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 common/rc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/common/rc b/common/rc
index 5e35e21..a93b227 100644
--- a/common/rc
+++ b/common/rc
@@ -28,6 +28,18 @@ _have_root() {
 	return 0
 }
 
+_have_driver()
+{
+	local modname="${1/-/_}"
+
+	if [ ! -d "/sys/module/${modname}" ] && ! modprobe -q ${modname}; then
+		SKIP_REASON="driver ${modname} is not available"
+		return 1
+	fi
+
+	return 0
+}
+
 _have_modules() {
 	local missing=()
 	local module
-- 
2.30.2

