RE: [PATCH v2 1/1] wic/partition.py: Set hash_seed for empty ext partition

[<Adithya.Balakumar@toshiba-tsip.com>]

Hi All,

Any update on this patch?

Thanks and Regards,
Adithya

-----Original Message-----
From: Adithya Balakumar <Adithya.Balakumar@toshiba-tsip.com> 
Sent: Thursday, July 4, 2024 4:41 PM
To: isar-users@googlegroups.com; amikan@ilbers.de
Cc: balakumar adithya(ＴＳＩＰ TEUR) <Adithya.Balakumar@toshiba-tsip.com>; jan.kiszka@siemens.com; hayashi kazuhiro(林 和宏 ＤＭＥ ○ＤＩＧ□ＭＰＳ○ＭＰ４) <kazuhiro3.hayashi@toshiba.co.jp>; dinesh kumar(ＴＳＩＰ TMIEC ODG Porting) <dinesh.kumar@toshiba-tsip.com>; kunijadar shivanand(ＴＳＩＰ TMIEC ODG Porting) <Shivanand.Kunijadar@toshiba-tsip.com>; ashrith sai(ＴＳＩＰ) <Sai.Sathujoda@toshiba-tsip.com>
Subject: [PATCH v2 1/1] wic/partition.py: Set hash_seed for empty ext partition

From: Adithya Balakumar <adithya.balakumar@toshiba-tsip.com>

Although setting hash_seed is handled for the rootfs plugin case, but this is missed when deploying an empty ext partition.

Signed-off-by: Adithya Balakumar <adithya.balakumar@toshiba-tsip.com>
---
 scripts/lib/wic/partition.py | 37 ++++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 14 deletions(-)

diff --git a/scripts/lib/wic/partition.py b/scripts/lib/wic/partition.py index 795707ec..bf2c34d5 100644
--- a/scripts/lib/wic/partition.py
+++ b/scripts/lib/wic/partition.py
@@ -284,19 +284,8 @@ class Partition():
 
         extraopts = self.mkfs_extraopts or "-F -i 8192"
 
-        if os.getenv('SOURCE_DATE_EPOCH'):
-            sde_time = int(os.getenv('SOURCE_DATE_EPOCH'))
-            if pseudo:
-                pseudo = "export E2FSPROGS_FAKE_TIME=%s;%s " % (sde_time, pseudo)
-            else:
-                pseudo = "export E2FSPROGS_FAKE_TIME=%s; " % sde_time
-
-            # Set hash_seed to generate deterministic directory indexes
-            namespace = uuid.UUID("e7429877-e7b3-4a68-a5c9-2f2fdf33d460")
-            if self.fsuuid:
-                namespace = uuid.UUID(self.fsuuid)
-            hash_seed = str(uuid.uuid5(namespace, str(sde_time)))
-            extraopts += " -E hash_seed=%s" % hash_seed
+        # use hash_seed to generate reproducible ext4 images
+        (extraopts, pseudo) = self.get_hash_seed_ext4(extraopts, 
+ pseudo)
 
         label_str = ""
         if self.label:
@@ -344,6 +333,23 @@ class Partition():
 
         self.check_for_Y2038_problem(rootfs, native_sysroot)
 
+    def get_hash_seed_ext4(self, extraopts, pseudo):
+        if os.getenv('SOURCE_DATE_EPOCH'):
+            sde_time = int(os.getenv('SOURCE_DATE_EPOCH'))
+            if pseudo:
+                pseudo = "export E2FSPROGS_FAKE_TIME=%s;%s " % (sde_time, pseudo)
+            else:
+                pseudo = "export E2FSPROGS_FAKE_TIME=%s; " % sde_time
+
+            # Set hash_seed to generate deterministic directory indexes
+            namespace = uuid.UUID("e7429877-e7b3-4a68-a5c9-2f2fdf33d460")
+            if self.fsuuid:
+                namespace = uuid.UUID(self.fsuuid)
+            hash_seed = str(uuid.uuid5(namespace, str(sde_time)))
+            extraopts += " -E hash_seed=%s" % hash_seed
+
+        return (extraopts, pseudo)
+
     def prepare_rootfs_btrfs(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
                              native_sysroot, pseudo):
         """
@@ -437,13 +443,16 @@ class Partition():
 
         extraopts = self.mkfs_extraopts or "-i 8192"
 
+        # use hash_seed to generate reproducible ext4 images
+        (extraopts, pseudo) = self.get_hash_seed_ext4(extraopts, None)
+
         label_str = ""
         if self.label:
             label_str = "-L %s" % self.label
 
         mkfs_cmd = "mkfs.%s -F %s %s -U %s %s" % \
             (self.fstype, extraopts, label_str, self.fsuuid, rootfs)
-        exec_native_cmd(mkfs_cmd, native_sysroot)
+        exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
 
         self.check_for_Y2038_problem(rootfs, native_sysroot)
 
--
2.39.2


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