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scsi: sd: change manage_start_stop to bool in sysfs interface

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[ 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 <zhangweiping@didichuxing.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
weiping zhang 2017-10-12 14:57:06 +08:00 committed by Greg Kroah-Hartman
parent 8315bcf841
commit 1cafdac891
1 changed files with 5 additions and 1 deletions
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6
drivers/scsi/sd.c
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@ -234,11 +234,15 @@ 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;
}