| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 157/178] scsi: sd: change manage_start_stop to bool in sysfs interface | Date | Mon, 18 Dec 2017 16:49:53 +0100 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: weiping zhang <zhangweiping@didichuxing.com>
[ 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> --- drivers/scsi/sd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -231,11 +231,15 @@ manage_start_stop_store(struct device *d { 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; }
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