[Libguestfs] [PATCH 1/1] WIP: sparsify: Support LUKS-encrypted partitions

--- daemon/listfs.ml | 18 +++++++++++++++--- daemon/luks.c | 1 + 2 files changed, 16 insertions(+), 3 deletions(-) diff --git a/daemon/listfs.ml b/daemon/listfs.ml index bf4dca6d4..48880f2e5 100644 --- a/daemon/listfs.ml +++ b/daemon/listfs.ml @@ -19,6 +19,7 @@ open Printf open Std_utils +open Utils (* Enumerate block devices (including MD, LVM, LDM and partitions) and use * vfs-type to check for filesystems on devices. Some block devices cannot @@ -30,6 +31,7 @@ let rec list_filesystems () = (* Devices. *) let devices = Devsparts.list_devices () in + let devices = List.filter is_not_partitioned_device devices in let ret = List.filter_map check_with_vfs_type devices in @@ -144,9 +146,19 @@ and check_with_vfs_type device = else if String.is_suffix vfs_type "_member" then None - (* Ignore LUKS-encrypted partitions. These are also containers, as above. *) - else if vfs_type = "crypto_LUKS" then - None + (* If a LUKS-encrypted partition had been opened, include the corresponding + * device mapper filesystem path. *) + else if vfs_type = "crypto_LUKS" then ( + let out = command "lsblk" ["-n"; "-l"; "-o"; "NAME"; device] in + (* Example output: #lsblk -n -l -o NAME /dev/sda5 + * sda5 + * lukssda5 + *) + match String.trimr @@ snd @@ String.split "\n" out with + | "" -> None + | part -> let mnt = Mountable.of_path @@ "/dev/mapper/" ^ part in + Some [mnt, Blkid.vfs_type mnt] + ) (* A single btrfs device can turn into many volumes. *) else if vfs_type = "btrfs" then ( diff --git a/daemon/luks.c b/daemon/luks.c index d631cb100..1ffeaf293 100644 --- a/daemon/luks.c +++ b/daemon/luks.c @@ -110,6 +110,7 @@ luks_open (const char *device, const char *key, const char *mapname, ADD_ARG (argv, i, "-d"); ADD_ARG (argv, i, tempfile); if (readonly) ADD_ARG (argv, i, "--readonly"); + ADD_ARG (argv, i, "--allow-discards"); ADD_ARG (argv, i, "luksOpen"); ADD_ARG (argv, i, device); ADD_ARG (argv, i, mapname); -- 2.24.1