IBMCloud: Initial IBM Cloud datasource.

This adds a specific IBM Cloud datasource.
IBM Cloud is identified by:
 a.) running on xen
 b.) one of a LABEL=METADATA disk or a LABEL=config-2 disk with
     UUID=9796-932E

The datasource contains its own config-drive reader that reads
only the currently supported portion of config-drive needed for
ibm cloud.

During the provisioning boot, cloud-init is disabled.

See the docstring in DataSourceIBMCloud.py for more more information.

1 files changed, 56 insertions, 9 deletions

diff --git a/tools/ds-identify b/tools/ds-identify
index e2552c8b..9a2db5c4 100755
--- a/tools/ds-identify
+++ b/tools/ds-identify
@@ -92,6 +92,7 @@ DI_DMI_SYS_VENDOR=""
 DI_DMI_PRODUCT_SERIAL=""
 DI_DMI_PRODUCT_UUID=""
 DI_FS_LABELS=""
+DI_FS_UUIDS=""
 DI_ISO9660_DEVS=""
 DI_KERNEL_CMDLINE=""
 DI_VIRT=""
@@ -114,7 +115,7 @@ DI_DSNAME=""
 # be searched if there is no setting found in config.
 DI_DSLIST_DEFAULT="MAAS ConfigDrive NoCloud AltCloud Azure Bigstep \
 CloudSigma CloudStack DigitalOcean AliYun Ec2 GCE OpenNebula OpenStack \
-OVF SmartOS Scaleway Hetzner"
+OVF SmartOS Scaleway Hetzner IBMCloud"
 DI_DSLIST=""
 DI_MODE=""
 DI_ON_FOUND=""
@@ -123,6 +124,8 @@ DI_ON_NOTFOUND=""
 
 DI_EC2_STRICT_ID_DEFAULT="true"
 
+_IS_IBM_CLOUD=""
+
 error() {
     set -- "ERROR:" "$@";
     debug 0 "$@"
@@ -196,7 +199,7 @@ read_fs_info() {
         return
     fi
     local oifs="$IFS" line="" delim=","
-    local ret=0 out="" labels="" dev="" label="" ftype="" isodevs=""
+    local ret=0 out="" labels="" dev="" label="" ftype="" isodevs="" uuids=""
     out=$(blkid -c /dev/null -o export) || {
         ret=$?
         error "failed running [$ret]: blkid -c /dev/null -o export"
@@ -219,12 +222,14 @@ read_fs_info() {
             LABEL=*) label="${line#LABEL=}";
                      labels="${labels}${line#LABEL=}${delim}";;
             TYPE=*) ftype=${line#TYPE=};;
+            UUID=*) uuids="${uuids}${line#UUID=}$delim";;
         esac
     done
     [ -n "$dev" -a "$ftype" = "iso9660" ] &&
         isodevs="${isodevs} ${dev}=$label"
 
     DI_FS_LABELS="${labels%${delim}}"
+    DI_FS_UUIDS="${uuids%${delim}}"
     DI_ISO9660_DEVS="${isodevs# }"
 }
 
@@ -437,14 +442,25 @@ dmi_sys_vendor_is() {
     [ "${DI_DMI_SYS_VENDOR}" = "$1" ]
 }
 
-has_fs_with_label() {
-    local label="$1"
-    case ",${DI_FS_LABELS}," in
-        *,$label,*) return 0;;
+has_fs_with_uuid() {
+    case ",${DI_FS_UUIDS}," in
+        *,$1,*) return 0;;
     esac
     return 1
 }
 
+has_fs_with_label() {
+    # has_fs_with_label(label1[ ,label2 ..])
+    # return 0 if a there is a filesystem that matches any of the labels.
+    local label=""
+    for label in "$@"; do
+        case ",${DI_FS_LABELS}," in
+            *,$label,*) return 0;;
+        esac
+    done
+    return 1
+}
+
 nocase_equal() {
     # nocase_equal(a, b)
     # return 0 if case insenstive comparision a.lower() == b.lower()
@@ -583,6 +599,8 @@ dscheck_NoCloud() {
     case " ${DI_DMI_PRODUCT_SERIAL} " in
         *\ ds=nocloud*) return ${DS_FOUND};;
     esac
+
+    is_ibm_cloud && return ${DS_NOT_FOUND}
     for d in nocloud nocloud-net; do
         check_seed_dir "$d" meta-data user-data && return ${DS_FOUND}
         check_writable_seed_dir "$d" meta-data user-data && return ${DS_FOUND}
@@ -594,9 +612,8 @@ dscheck_NoCloud() {
 }
 
 check_configdrive_v2() {
-    if has_fs_with_label "config-2"; then
-        return ${DS_FOUND}
-    elif has_fs_with_label "CONFIG-2"; then
+    is_ibm_cloud && return ${DS_NOT_FOUND}
+    if has_fs_with_label CONFIG-2 config-2; then
         return ${DS_FOUND}
     fi
     # look in /config-drive <vlc>/seed/config_drive for a directory
@@ -988,6 +1005,36 @@ dscheck_Hetzner() {
     return ${DS_NOT_FOUND}
 }
 
+is_ibm_provisioning() {
+    [ -f "${PATH_ROOT}/root/provisioningConfiguration.cfg" ]
+}
+
+is_ibm_cloud() {
+    cached "${_IS_IBM_CLOUD}" && return ${_IS_IBM_CLOUD}
+    local ret=1
+    if [ "$DI_VIRT" = "xen" ]; then
+        if is_ibm_provisioning; then
+            ret=0
+        elif has_fs_with_label METADATA metadata; then
+            ret=0
+        elif has_fs_with_uuid 9796-932E &&
+            has_fs_with_label CONFIG-2 config-2; then
+            ret=0
+        fi
+    fi
+    _IS_IBM_CLOUD=$ret
+    return $ret
+}
+
+dscheck_IBMCloud() {
+    if is_ibm_provisioning; then
+        debug 1 "cloud-init disabled during provisioning on IBMCloud"
+        return ${DS_NOT_FOUND}
+    fi
+    is_ibm_cloud && return ${DS_FOUND}
+    return ${DS_NOT_FOUND}
+}
+
 collect_info() {
     read_virt
     read_pid1_product_name