From 47b5dbdd983e0319cd5d135bbfe7e564f4bbaabc Mon Sep 17 00:00:00 2001 From: weiping zhang Date: Thu, 12 Oct 2017 14:57:06 +0800 Subject: [PATCH] scsi: sd: change manage_start_stop to bool in sysfs interface [ Upstream commit 623401ee33e42cee64d333877892be8db02951eb ] /sys/class/scsi_disk/0:2:0:0/manage_start_stop can be changed to 0 unexpectly by writing an invalid string. Signed-off-by: weiping zhang Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/sd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index d841743b2107..b801212eefb5 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -231,11 +231,15 @@ manage_start_stop_store(struct device *dev, struct device_attribute *attr, { struct scsi_disk *sdkp = to_scsi_disk(dev); struct scsi_device *sdp = sdkp->device; + bool v; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - sdp->manage_start_stop = simple_strtoul(buf, NULL, 10); + if (kstrtobool(buf, &v)) + return -EINVAL; + + sdp->manage_start_stop = v; return count; } -- 2.20.1