Export the RAW SCSI Inquiry to sysfs as binfile. This way the data can be used
by userland without the need to have and ioctl or use the sg_inq tool.
Here is an example of the provided data
linux:~ # hexdump /sys/class/scsi_device/1\:0\:0\:0/device/inquiry
000 8005 3205 001f 4551 554d 2020 2020
010 4551 554d 4420 4456 522d 4d4f 2020 2020
020 2e32 2e33
024
Signed-off-by: Johannes Thumshirn jthumsh...@suse.de
Reviewed-by: Hannes Reinecke h...@suse.de
---
Chanes to v1:
* Correct typo userlang - userland in commit message.
drivers/scsi/scsi_sysfs.c | 24
1 file changed, 24 insertions(+)
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 9ad4116..5ecb65d 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -773,6 +773,29 @@ static struct bin_attribute dev_attr_vpd_##_page = {
\
sdev_vpd_pg_attr(pg83);
sdev_vpd_pg_attr(pg80);
+static ssize_t show_inquiry(struct file *filep, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct scsi_device *sdev = to_scsi_device(dev);
+
+ if (!sdev-inquiry)
+ return -EINVAL;
+
+ return memory_read_from_buffer(buf, count, off, sdev-inquiry,
+ sdev-inquiry_len);
+}
+
+static struct bin_attribute dev_attr_inquiry = {
+ .attr = {
+ .name = inquiry,
+ .mode = S_IRUGO,
+ },
+ .size = 0,
+ .read = show_inquiry,
+};
+
static ssize_t
show_iostat_counterbits(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -957,6 +980,7 @@ static struct attribute *scsi_sdev_attrs[] = {
static struct bin_attribute *scsi_sdev_bin_attrs[] = {
dev_attr_vpd_pg83,
dev_attr_vpd_pg80,
+ dev_attr_inquiry,
NULL
};
static struct attribute_group scsi_sdev_attr_group = {
--
2.5.0
--
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