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-rw-r--r--src/udev/udev-builtin-path_id.c96
1 files changed, 95 insertions, 1 deletions
diff --git a/src/udev/udev-builtin-path_id.c b/src/udev/udev-builtin-path_id.c
index df996cb17a..d540ba8392 100644
--- a/src/udev/udev-builtin-path_id.c
+++ b/src/udev/udev-builtin-path_id.c
@@ -118,7 +118,7 @@ out:
return parent;
}
-static struct udev_device *handle_scsi_sas(struct udev_device *parent, char **path) {
+static struct udev_device *handle_scsi_sas_wide_port(struct udev_device *parent, char **path) {
struct udev *udev = udev_device_get_udev(parent);
struct udev_device *targetdev;
struct udev_device *target_parent;
@@ -154,6 +154,100 @@ out:
return parent;
}
+static struct udev_device *handle_scsi_sas(struct udev_device *parent, char **path)
+{
+ struct udev *udev = udev_device_get_udev(parent);
+ struct udev_device *targetdev;
+ struct udev_device *target_parent;
+ struct udev_device *port;
+ struct udev_device *expander;
+ struct udev_device *target_sasdev = NULL;
+ struct udev_device *expander_sasdev = NULL;
+ struct udev_device *port_sasdev = NULL;
+ const char *sas_address = NULL;
+ const char *phy_id;
+ const char *phy_count;
+ char *lun = NULL;
+
+ targetdev = udev_device_get_parent_with_subsystem_devtype(parent, "scsi", "scsi_target");
+ if (targetdev == NULL)
+ return NULL;
+
+ target_parent = udev_device_get_parent(targetdev);
+ if (target_parent == NULL)
+ return NULL;
+
+ /* Get sas device */
+ target_sasdev = udev_device_new_from_subsystem_sysname(udev,
+ "sas_device", udev_device_get_sysname(target_parent));
+ if (target_sasdev == NULL)
+ return NULL;
+
+ /* The next parent is sas port */
+ port = udev_device_get_parent(target_parent);
+ if (port == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ /* Get port device */
+ port_sasdev = udev_device_new_from_subsystem_sysname(udev,
+ "sas_port", udev_device_get_sysname(port));
+
+ phy_count = udev_device_get_sysattr_value(port_sasdev, "num_phys");
+ if (phy_count == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ /* Check if we are simple disk */
+ if (strncmp(phy_count, "1", 2) != 0) {
+ parent = handle_scsi_sas_wide_port(parent, path);
+ goto out;
+ }
+
+ /* Get connected phy */
+ phy_id = udev_device_get_sysattr_value(target_sasdev, "phy_identifier");
+ if (phy_id == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ /* The port's parent is either hba or expander */
+ expander = udev_device_get_parent(port);
+ if (expander == NULL) {
+ parent = NULL;
+ goto out;
+ }
+
+ /* Get expander device */
+ expander_sasdev = udev_device_new_from_subsystem_sysname(udev,
+ "sas_device", udev_device_get_sysname(expander));
+ if (expander_sasdev != NULL) {
+ /* Get expander's address */
+ sas_address = udev_device_get_sysattr_value(expander_sasdev,
+ "sas_address");
+ if (sas_address == NULL) {
+ parent = NULL;
+ goto out;
+ }
+ }
+
+ format_lun_number(parent, &lun);
+ if (sas_address)
+ path_prepend(path, "sas-exp%s-phy%s-%s", sas_address, phy_id, lun);
+ else
+ path_prepend(path, "sas-phy%s-%s", phy_id, lun);
+
+ if (lun)
+ free(lun);
+out:
+ udev_device_unref(target_sasdev);
+ udev_device_unref(expander_sasdev);
+ udev_device_unref(port_sasdev);
+ return parent;
+}
+
static struct udev_device *handle_scsi_iscsi(struct udev_device *parent, char **path) {
struct udev *udev = udev_device_get_udev(parent);
struct udev_device *transportdev;