[Libguestfs] [PATCH 1/6] generator: Generate stable UUID from contents of all action*.ml files.
Richard W.M. Jones
rjones at redhat.com
Sat Feb 18 12:54:36 UTC 2017
Also rename the function 'uuidgen ()' (conflicts with a same-named
function in Common_utils) to 'stable_uuid'. Notice that the UUID is
now only computed once per run of the generator, whereas previously
the same value was computed over and over again.
---
generator/actions.ml | 83 +++++++++++++++++++++++-----------------------------
generator/utils.ml | 18 ++++++++++--
generator/utils.mli | 4 +--
3 files changed, 54 insertions(+), 51 deletions(-)
diff --git a/generator/actions.ml b/generator/actions.ml
index 8a897a8..afa915d 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -5563,11 +5563,10 @@ C<device>." };
style = RErr, [Device "device"; String "uuid"], [];
proc_nr = Some 82;
deprecated_by = Some "set_uuid";
- tests =
- (let uuid = uuidgen () in [
+ tests = [
InitBasicFS, Always, TestResultString (
- [["set_e2uuid"; "/dev/sda1"; uuid];
- ["get_e2uuid"; "/dev/sda1"]], uuid), [];
+ [["set_e2uuid"; "/dev/sda1"; stable_uuid];
+ ["get_e2uuid"; "/dev/sda1"]], stable_uuid), [];
InitBasicFS, Always, TestResultString (
[["set_e2uuid"; "/dev/sda1"; "clear"];
["get_e2uuid"; "/dev/sda1"]], ""), [];
@@ -5577,7 +5576,7 @@ C<device>." };
[["set_e2uuid"; "/dev/sda1"; "random"]]), [];
InitBasicFS, Always, TestRun (
[["set_e2uuid"; "/dev/sda1"; "time"]]), []
- ]);
+ ];
shortdesc = "set the ext2/3/4 filesystem UUID";
longdesc = "\
This sets the ext2/3/4 filesystem UUID of the filesystem on
@@ -6595,7 +6594,7 @@ the command C<mount -o loop file mountpoint>." };
style = RErr, [Device "device"], [OString "label"; OString "uuid"];
proc_nr = Some 130;
once_had_no_optargs = true;
- tests = (let uuid = uuidgen () in [
+ tests = [
InitEmpty, Always, TestRun (
[["part_disk"; "/dev/sda"; "mbr"];
["mkswap"; "/dev/sda1"; "NOARG"; "NOARG"]]), [];
@@ -6604,13 +6603,13 @@ the command C<mount -o loop file mountpoint>." };
["mkswap"; "/dev/sda1"; "hello"; "NOARG"]]), [];
InitEmpty, Always, TestResultString (
[["part_disk"; "/dev/sda"; "mbr"];
- ["mkswap"; "/dev/sda1"; "NOARG"; uuid];
- ["vfs_uuid"; "/dev/sda1"]], uuid), [];
+ ["mkswap"; "/dev/sda1"; "NOARG"; stable_uuid];
+ ["vfs_uuid"; "/dev/sda1"]], stable_uuid), [];
InitEmpty, Always, TestResultString (
[["part_disk"; "/dev/sda"; "mbr"];
- ["mkswap"; "/dev/sda1"; "hello"; uuid];
+ ["mkswap"; "/dev/sda1"; "hello"; stable_uuid];
["vfs_label"; "/dev/sda1"]], "hello"), []
- ]);
+ ];
shortdesc = "create a swap partition";
longdesc = "\
Create a Linux swap partition on C<device>.
@@ -6642,12 +6641,11 @@ a limitation of the kernel or swap tools." };
proc_nr = Some 132;
deprecated_by = Some "mkswap";
optional = Some "linuxfsuuid";
- tests =
- (let uuid = uuidgen () in [
+ tests = [
InitEmpty, Always, TestRun (
[["part_disk"; "/dev/sda"; "mbr"];
- ["mkswap_U"; uuid; "/dev/sda1"]]), []
- ]);
+ ["mkswap_U"; stable_uuid; "/dev/sda1"]]), []
+ ];
shortdesc = "create a swap partition with an explicit UUID";
longdesc = "\
Create a swap partition on C<device> with UUID C<uuid>." };
@@ -7479,13 +7477,12 @@ labeled swap partition." };
style = RErr, [String "uuid"], [];
proc_nr = Some 176;
optional = Some "linuxfsuuid";
- tests =
- (let uuid = uuidgen () in [
+ tests = [
InitEmpty, Always, TestRun (
- [["mkswap"; "/dev/sdc"; "NOARG"; uuid];
- ["swapon_uuid"; uuid];
- ["swapoff_uuid"; uuid]]), []
- ]);
+ [["mkswap"; "/dev/sdc"; "NOARG"; stable_uuid];
+ ["swapon_uuid"; stable_uuid];
+ ["swapoff_uuid"; stable_uuid]]), []
+ ];
shortdesc = "enable swap on swap partition by UUID";
longdesc = "\
This command enables swap to a swap partition with the given UUID.
@@ -7753,18 +7750,17 @@ This creates an ext2 external journal on C<device> with label C<label>." };
proc_nr = Some 190;
deprecated_by = Some "mke2fs";
optional = Some "linuxfsuuid";
- tests =
- (let uuid = uuidgen () in [
+ tests = [
InitEmpty, Always, TestResultString (
[["part_init"; "/dev/sda"; "mbr"];
["part_add"; "/dev/sda"; "p"; "64"; "204799"];
["part_add"; "/dev/sda"; "p"; "204800"; "-64"];
- ["mke2journal_U"; "4096"; uuid; "/dev/sda1"];
- ["mke2fs_JU"; "ext2"; "4096"; "/dev/sda2"; uuid];
+ ["mke2journal_U"; "4096"; stable_uuid; "/dev/sda1"];
+ ["mke2fs_JU"; "ext2"; "4096"; "/dev/sda2"; stable_uuid];
["mount"; "/dev/sda2"; "/"];
["write"; "/new"; "new file contents"];
["cat"; "/new"]], "new file contents"), []
- ]);
+ ];
shortdesc = "make ext2/3/4 external journal with UUID";
longdesc = "\
This creates an ext2 external journal on C<device> with UUID C<uuid>." };
@@ -9037,12 +9033,11 @@ To find a filesystem from the label, use C<guestfs_findfs_label>." };
style = RString "uuid", [Mountable "mountable"], [];
fish_alias = ["get-uuid"];
proc_nr = Some 254;
- tests =
- (let uuid = uuidgen () in [
+ tests = [
InitBasicFS, Always, TestResultString (
- [["set_e2uuid"; "/dev/sda1"; uuid];
- ["vfs_uuid"; "/dev/sda1"]], uuid), []
- ]);
+ [["set_e2uuid"; "/dev/sda1"; stable_uuid];
+ ["vfs_uuid"; "/dev/sda1"]], stable_uuid), []
+ ];
shortdesc = "get the filesystem UUID";
longdesc = "\
This returns the filesystem UUID of the filesystem on C<mountable>.
@@ -11229,8 +11224,7 @@ with zeroes)." };
style = RErr, [Device "device"], [OBool "extunwritten"; OBool "imgfile"; OBool "v2log"; OBool "projid32bit"; OBool "lazycounter"; OString "label"; OString "uuid"];
proc_nr = Some 349;
optional = Some "xfs";
- tests =
- (let uuid = uuidgen () in [
+ tests = [
InitEmpty, Always, TestResult (
[["part_disk"; "/dev/sda"; "mbr"];
["mkfs"; "xfs"; "/dev/sda1"; ""; "NOARG"; ""; ""; "NOARG"];
@@ -11240,14 +11234,14 @@ with zeroes)." };
InitEmpty, Always, TestResultString (
[["part_disk"; "/dev/sda"; "mbr"];
["mkfs"; "xfs"; "/dev/sda1"; ""; "NOARG"; ""; ""; "NOARG"];
- ["xfs_admin"; "/dev/sda1"; ""; ""; ""; ""; ""; "NOARG"; uuid];
- ["vfs_uuid"; "/dev/sda1"]], uuid), [];
+ ["xfs_admin"; "/dev/sda1"; ""; ""; ""; ""; ""; "NOARG"; stable_uuid];
+ ["vfs_uuid"; "/dev/sda1"]], stable_uuid), [];
InitEmpty, Always, TestResultString (
[["part_disk"; "/dev/sda"; "mbr"];
["mkfs"; "xfs"; "/dev/sda1"; ""; "NOARG"; ""; ""; "NOARG"];
["xfs_admin"; "/dev/sda1"; ""; ""; ""; ""; ""; "LBL-TEST"; "NOARG"];
["vfs_label"; "/dev/sda1"]], "LBL-TEST"), [];
- ]);
+ ];
shortdesc = "change parameters of an XFS filesystem";
longdesc = "\
Change the parameters of the XFS filesystem on C<device>.
@@ -11528,9 +11522,7 @@ or C<guestfs_rm_rf> to remove directories recursively." };
name = "mke2fs"; added = (1, 19, 44);
style = RErr, [Device "device"], [OInt64 "blockscount"; OInt64 "blocksize"; OInt64 "fragsize"; OInt64 "blockspergroup"; OInt64 "numberofgroups"; OInt64 "bytesperinode"; OInt64 "inodesize"; OInt64 "journalsize"; OInt64 "numberofinodes"; OInt64 "stridesize"; OInt64 "stripewidth"; OInt64 "maxonlineresize"; OInt "reservedblockspercentage"; OInt "mmpupdateinterval"; OString "journaldevice"; OString "label"; OString "lastmounteddir"; OString "creatoros"; OString "fstype"; OString "usagetype"; OString "uuid"; OBool "forcecreate"; OBool "writesbandgrouponly"; OBool "lazyitableinit"; OBool "lazyjournalinit"; OBool "testfs"; OBool "discard"; OBool "quotatype"; OBool "extent"; OBool "filetype"; OBool "flexbg"; OBool "hasjournal"; OBool "journaldev"; OBool "largefile"; OBool "quota"; OBool "resizeinode"; OBool "sparsesuper"; OBool "uninitbg"];
proc_nr = Some 368;
- tests =
- (let uuid = uuidgen () in
- let uuid_s = "UUID=" ^ uuid in [
+ tests = [
InitEmpty, Always, TestResultString (
[["part_init"; "/dev/sda"; "mbr"];
["part_add"; "/dev/sda"; "p"; "64"; "204799"];
@@ -11585,13 +11577,13 @@ or C<guestfs_rm_rf> to remove directories recursively." };
""; ""; ""; ""; "";
""; ""; ""; ""; "NOARG";
"NOARG"; "NOARG"; "NOARG"; "NOARG"; "NOARG";
- uuid; ""; ""; ""; "";
+ stable_uuid; ""; ""; ""; "";
""; ""; ""; ""; "";
""; ""; "true"; ""; "";
""; ""; ""];
["mke2fs"; "/dev/sda2"; ""; "4096"; ""; ""; "";
""; ""; ""; ""; "";
- ""; ""; ""; ""; uuid_s;
+ ""; ""; ""; ""; "UUID=" ^ stable_uuid;
"JOURNAL"; "NOARG"; "NOARG"; "ext2"; "NOARG";
"NOARG"; "true"; ""; ""; "";
""; ""; ""; ""; "";
@@ -11600,7 +11592,7 @@ or C<guestfs_rm_rf> to remove directories recursively." };
["mount"; "/dev/sda2"; "/"];
["write"; "/new"; "new file contents"];
["cat"; "/new"]], "new file contents"), []
- ]);
+ ];
shortdesc = "create an ext2/ext3/ext4 filesystem on device";
(* XXX document optional args properly *)
longdesc = "\
@@ -12217,12 +12209,11 @@ parameter. In future we may allow other flags to be adjusted." };
name = "set_uuid"; added = (1, 23, 10);
style = RErr, [Device "device"; String "uuid"], [];
proc_nr = Some 403;
- tests =
- (let uuid = uuidgen () in [
+ tests = [
InitBasicFS, Always, TestResultString (
- [["set_uuid"; "/dev/sda1"; uuid];
- ["vfs_uuid"; "/dev/sda1"]], uuid), [];
- ]);
+ [["set_uuid"; "/dev/sda1"; stable_uuid];
+ ["vfs_uuid"; "/dev/sda1"]], stable_uuid), [];
+ ];
shortdesc = "set the filesystem UUID";
longdesc = "\
Set the filesystem UUID on C<device> to C<uuid>.
diff --git a/generator/utils.ml b/generator/utils.ml
index a29a203..7034065 100644
--- a/generator/utils.ml
+++ b/generator/utils.ml
@@ -47,15 +47,27 @@ let string_of_errcode = function
(* Generate a uuidgen-compatible UUID (used in tests). However to
* avoid having the UUID change every time we rebuild the tests,
- * generate it as a function of the contents of the actions.ml file.
+ * generate it as a function of the contents of the [actions*.ml]
+ * files.
*
* Originally I thought uuidgen was using RFC 4122, but it doesn't
* appear to.
*
* Note that the format must be 01234567-0123-0123-0123-0123456789ab
*)
-let uuidgen () =
- let s = Digest.to_hex (Digest.file "generator/actions.ml") in
+let stable_uuid =
+ let cmd = "cat generator/actions*.ml" in
+ let chan = open_process_in cmd in
+ let s = Digest.channel chan (-1) in
+ (match close_process_in chan with
+ | WEXITED 0 -> ()
+ | WEXITED i ->
+ failwithf "command exited with non-zero status (%d)" i
+ | WSIGNALED i | WSTOPPED i ->
+ failwithf "command signalled or stopped with non-zero status (%d)" i
+ );
+
+ let s = Digest.to_hex s in
(* In util-linux <= 2.19, mkswap -U cannot handle the first byte of
* the UUID being zero, so we artificially rewrite such UUIDs.
diff --git a/generator/utils.mli b/generator/utils.mli
index d4033f3..485584c 100644
--- a/generator/utils.mli
+++ b/generator/utils.mli
@@ -31,8 +31,8 @@ val errcode_of_ret : Types.ret -> Types.errcode
val string_of_errcode : [`ErrorIsMinusOne|`ErrorIsNULL] -> string
(** Return errcode as a string. Untyped for [`CannotReturnError]. *)
-val uuidgen : unit -> string
-(** Generate a random UUID (used in tests). *)
+val stable_uuid : string
+(** A random but stable UUID (used in tests). *)
type rstructs_used_t = RStructOnly | RStructListOnly | RStructAndList
(** Return type of {!rstructs_used_by}. *)
--
2.10.2
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