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supermin/initrd_support_ztd-compressed_modules.patch
Charles Arnold 975dddcf8e Accepting request 941875 from home:benoit_monin:branches:Virtualization
Add initrd_support_ztd-compressed_modules.patch: backport of 4306a131c6cd to add support of zstd compressed kernel modules.

OBS-URL: https://build.opensuse.org/request/show/941875
OBS-URL: https://build.opensuse.org/package/show/Virtualization/supermin?expand=0&rev=69
2022-01-04 12:20:20 +00:00

84 lines
2.9 KiB
Diff

From 4306a131c6cde92f8d0a2dd9376f4096ee538eff Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Thu, 5 Aug 2021 08:16:28 +0100
Subject: [PATCH] initrd: Support ztd-compressed modules
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1990209
---
README | 2 ++
configure.ac | 3 +++
src/config.ml.in | 1 +
src/format_ext2_initrd.ml | 16 ++++++++++++++--
4 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/README b/README
index e5187a6..ccd6f96 100644
--- a/README
+++ b/README
@@ -102,6 +102,8 @@ are building:
xzcat (command) - if your kernel uses xz-compressed modules
+ zstdcat (command) - if your kernel uses zstd-compressed modules
+
Building and installing
-----------------------
diff --git a/configure.ac b/configure.ac
index cd5d8c0..ad86ca5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -157,6 +157,9 @@ AC_PATH_PROG(ZCAT,[zcat],[no])
dnl Check for xzcat, only needed if you have xz-compressed kernel modules.
AC_PATH_PROG(XZCAT,[xzcat],[no])
+dnl Check for zstdcat, only needed if you have zstd-compressed kernel modules.
+AC_PATH_PROG(ZSTDCAT,[zstdcat],[no])
+
dnl mke2fs.
AC_PATH_PROG([MKE2FS],[mke2fs],[no],
[$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR])
diff --git a/src/config.ml.in b/src/config.ml.in
index 313d6e6..b0953dc 100644
--- a/src/config.ml.in
+++ b/src/config.ml.in
@@ -39,6 +39,7 @@ let urpmi = "@URPMI@"
let yumdownloader = "@YUMDOWNLOADER@"
let xzcat = "@XZCAT@"
let zcat = "@ZCAT@"
+let zstdcat = "@ZSTDCAT@"
let zypper = "@ZYPPER@"
let mke2fs = "@MKE2FS@"
diff --git a/src/format_ext2_initrd.ml b/src/format_ext2_initrd.ml
index 6268442..98d2692 100644
--- a/src/format_ext2_initrd.ml
+++ b/src/format_ext2_initrd.ml
@@ -106,12 +106,24 @@ let rec build_initrd debug tmpdir modpath initrd =
visit deps;
(* Copy module to the init directory.
- * Uncompress the module, if the name ends in .xz or .gz.
+ * Uncompress the module, if the name ends in .zst, .xz or .gz.
*)
let basename = Filename.basename modl in
let basename =
let len = String.length basename in
- if Config.xzcat <> "no" &&
+ if Config.zstdcat <> "no" &&
+ Filename.check_suffix basename ".zst"
+ then (
+ let basename = String.sub basename 0 (len-4) in
+ let cmd = sprintf "%s %s > %s"
+ (quote Config.zstdcat)
+ (quote (modpath // modl))
+ (quote (initdir // basename)) in
+ if debug >= 2 then printf "supermin: %s\n" cmd;
+ run_command cmd;
+ basename
+ )
+ else if Config.xzcat <> "no" &&
Filename.check_suffix basename ".xz"
then (
let basename = String.sub basename 0 (len-3) in