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scsi: Block reset attempts to UFS through scsi ioctl

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User layer can reset scsi host/bus/target/device through scsi ioctl. Block
this path to UFS as it may cause stability issues to UFS.

Change-Id: I18e721f36d4f255139645f986ceb329f40b2fb33
Signed-off-by: Can Guo <cang@codeaurora.org>
This commit is contained in:
Can Guo 2019-11-13 20:30:13 -08:00
commit b1419061a3
1 changed files with 5 additions and 0 deletions
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5
drivers/scsi/scsi_error.c
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@ -2330,12 +2330,17 @@ scsi_ioctl_reset(struct scsi_device *dev, int __user *arg)
struct scsi_cmnd *scmd;
struct Scsi_Host *shost = dev->host;
struct request *rq;
const char *string;
unsigned long flags;
int error = 0, rtn, val;
if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
return -EACCES;
string = shost->hostt->name;
if (!strcmp(string, "ufshcd"))
return -EACCES;
error = get_user(val, arg);
if (error)
return error;