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authorHorst Hummel <horst.hummel@de.ibm.com>2007-04-27 16:01:47 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-04-27 16:01:44 +0200
commit4dfd5c4593e69e9d399dd9e01d184dc534408f7e (patch)
tree3f148b0c30de75b8ec3a43b247da9d06b24573bc /drivers/s390/block/dasd_devmap.c
parentbe7962856d299a0f231ac36f89f4a89cbecfe0ff (diff)
[S390] dasd: Add sysfs attribute status and generate uevents.
This patch adds a sysfs-attribute 'status' to make the DASD device-status accessible from user-space. In addition, the DASD driver generates an uevent(CHANGE) for the ccw-device on each device-status change. This enables user-space applications (e.g. udev) to do related processing. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd_devmap.c')
-rw-r--r--drivers/s390/block/dasd_devmap.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index ed70852cc91..66958b8d7c4 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -829,6 +829,46 @@ dasd_discipline_show(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(discipline, 0444, dasd_discipline_show, NULL);
static ssize_t
+dasd_device_status_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct dasd_device *device;
+ ssize_t len;
+
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (!IS_ERR(device)) {
+ switch (device->state) {
+ case DASD_STATE_NEW:
+ len = snprintf(buf, PAGE_SIZE, "new\n");
+ break;
+ case DASD_STATE_KNOWN:
+ len = snprintf(buf, PAGE_SIZE, "detected\n");
+ break;
+ case DASD_STATE_BASIC:
+ len = snprintf(buf, PAGE_SIZE, "basic\n");
+ break;
+ case DASD_STATE_UNFMT:
+ len = snprintf(buf, PAGE_SIZE, "unformatted\n");
+ break;
+ case DASD_STATE_READY:
+ len = snprintf(buf, PAGE_SIZE, "ready\n");
+ break;
+ case DASD_STATE_ONLINE:
+ len = snprintf(buf, PAGE_SIZE, "online\n");
+ break;
+ default:
+ len = snprintf(buf, PAGE_SIZE, "no stat\n");
+ break;
+ }
+ dasd_put_device(device);
+ } else
+ len = snprintf(buf, PAGE_SIZE, "unknown\n");
+ return len;
+}
+
+static DEVICE_ATTR(status, 0444, dasd_device_status_show, NULL);
+
+static ssize_t
dasd_alias_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct dasd_devmap *devmap;
@@ -939,6 +979,7 @@ static DEVICE_ATTR(eer_enabled, 0644, dasd_eer_show, dasd_eer_store);
static struct attribute * dasd_attrs[] = {
&dev_attr_readonly.attr,
&dev_attr_discipline.attr,
+ &dev_attr_status.attr,
&dev_attr_alias.attr,
&dev_attr_vendor.attr,
&dev_attr_uid.attr,