# Adapted from /usr/lib/udev/rules.d/60-persistent-storage.rules
# Only handle /dev/xloop* devices.
#
# persistent storage links: /dev/disk/{by-id,by-uuid,by-label,by-path}
# scheme based on "Linux persistent device names", 2004, Hannes Reinecke <hare@suse.de>

ACTION=="remove", GOTO="xloop_storage_end"
ENV{UDEV_DISABLE_PERSISTENT_STORAGE_RULES_FLAG}=="1", GOTO="xloop_storage_end"

SUBSYSTEM!="block", GOTO="xloop_storage_end"
KERNEL!="xloop*", GOTO="xloop_storage_end"

# ignore partitions that span the entire disk
TEST=="whole_disk", GOTO="xloop_storage_end"

# For partitions import parent disk ID_* information, except ID_FS_*.
#
# This is particularly important on media where a filesystem superblock and
# partition table are found on the same level, e.g. common Linux distro ISO
# installation media.
#
# In the case where a partition device points to the same filesystem that
# was detected on the parent disk, the ID_FS_* information is already
# present on the partition devices as well as the parent, so no need to
# propagate it. In the case where the partition device points to a different
# filesystem, merging the parent ID_FS_ properties would lead to
# inconsistencies, so we avoid doing so.
ENV{DEVTYPE}=="partition", \
  IMPORT{parent}="ID_[!F]*", IMPORT{parent}="ID_", \
  IMPORT{parent}="ID_F[!S]*", IMPORT{parent}="ID_F", \
  IMPORT{parent}="ID_FS[!_]*", IMPORT{parent}="ID_FS"

# by-path
ENV{DEVTYPE}=="disk", DEVPATH!="*/virtual/*", IMPORT{builtin}="path_id"
KERNEL!="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-part%n"
# compatible links for ATA devices
KERNEL!="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_PATH_ATA_COMPAT}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH_ATA_COMPAT}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH_ATA_COMPAT}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH_ATA_COMPAT}-part%n"

# probe filesystem metadata of disks
KERNEL!="sr*", IMPORT{builtin}="blkid"

# by-label/by-uuid links (filesystem metadata)
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"

# by-id (World Wide Name)
ENV{DEVTYPE}=="disk", ENV{ID_WWN_WITH_EXTENSION}=="?*", SYMLINK+="disk/by-id/wwn-$env{ID_WWN_WITH_EXTENSION}"
ENV{DEVTYPE}=="partition", ENV{ID_WWN_WITH_EXTENSION}=="?*", SYMLINK+="disk/by-id/wwn-$env{ID_WWN_WITH_EXTENSION}-part%n"

# by-partlabel/by-partuuid links (partition metadata)
ENV{ID_PART_ENTRY_UUID}=="?*", SYMLINK+="disk/by-partuuid/$env{ID_PART_ENTRY_UUID}"
ENV{ID_PART_ENTRY_SCHEME}=="gpt", ENV{ID_PART_ENTRY_NAME}=="?*", SYMLINK+="disk/by-partlabel/$env{ID_PART_ENTRY_NAME}"

LABEL="xloop_storage_end"