[PATCH 1/3] ofpathname: Add partition support to l2of_ide() and l2of_scsi()

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Currently, only l2of_nvme() supports handling of partitions which
will print the partition number at the end of an OF path. However,
this feature is also useful for IDE and SCSI targets as well and
mandatory for Macintosh systems.

Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
---
 scripts/ofpathname | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/scripts/ofpathname b/scripts/ofpathname
index c37c6bd..0e58005 100755
--- a/scripts/ofpathname
+++ b/scripts/ofpathname
@@ -519,6 +519,13 @@ l2of_ide()
     if [[ -z $link ]]; then
         err $ERR_NO_SYSFS_DEVINFO
     fi
+
+    # partition number: N in sd*N
+    local devpart="${DEVICE##*[a-z]}"
+    if [[ $devpart = $DEVICE ]]; then
+        devpart='' # no partition number
+    fi
+
     cd $link
 
     # get the device number
@@ -584,6 +591,13 @@ l2of_vd()
     if [[ -z $OF_PATH ]]; then
         err $ERR_NO_OFPATH
     fi
+
+    # No partition specified.
+    if [[ -z $devpart ]]; then
+        return
+    fi
+
+    OF_PATH="${OF_PATH}:${devpart}"
 }
 
 #
@@ -786,6 +800,12 @@ l2of_scsi()
         err $ERR_NOT_CONFIG
     fi
 
+    # partition number: N in sd*N
+    local devpart="${DEVICE##*[a-z]}"
+    if [[ $devpart = $DEVICE ]]; then
+        devpart='' # no partition number
+    fi
+
     # follow the 'device' link
     local link=`get_link "device"`
     if [[ -z $link ]]; then
@@ -944,6 +964,13 @@ l2of_scsi()
              OF_PATH=$OF_PATH/sd@$ID,$LUN
        fi
     fi
+
+    # No partition specified.
+    if [[ -z $devpart ]]; then
+        return
+    fi
+
+    OF_PATH="${OF_PATH}:${devpart}"
 }
 
 #
-- 
2.26.1