raid6check: Fix build of raid6check

After recent git pull 'make raid6check' did not work anymore, as
sysfs_read() was called with a wrong argument and as check_env()
was used by use_udev(), but not defined.

Replace sysfs_read(..., -1, ...) by sysfs_read(..., NULL, ...)

Move check_env() from util.c to lib.c

Signed-off-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/lib.c b/lib.c
index 19580296..2c3d9368 100644
--- a/lib.c
+++ b/lib.c
@@ -378,6 +378,16 @@ void print_escape(char *str)
 	}
 }
 
+int check_env(char *name)
+{
+	char *val = getenv(name);
+
+	if (val && atoi(val) == 1)
+		return 1;
+
+	return 0;
+}
+
 int use_udev(void)
 {
 	static int use = -1;