[pbs-devel] [PATCH proxmox-backup] buildsys: make the build multi-arch

[Kamil Trzcinski]

- fixes debian .install scripts to be `dh-exec`
- fixes hardcoded .rs paths to be platform-dependent
- fixes postinst to deduce architecture

Signed-off-by: Kamil Trzcinski <ayufan at ayufan.eu>
---
 debian/proxmox-backup-file-restore.install  |  3 ++-
 debian/proxmox-backup-file-restore.postinst | 10 +++++++++-
 debian/proxmox-backup-server.install        | 11 ++++++-----
 debian/rules                                |  1 +
 pbs-buildcfg/src/lib.rs                     |  9 +++++++++
 src/tape/drive/lto/mod.rs                   |  9 +++++++--
 6 files changed, 34 insertions(+), 9 deletions(-)
 mode change 100644 => 100755 debian/proxmox-backup-file-restore.install
 mode change 100644 => 100755 debian/proxmox-backup-server.install

diff --git a/debian/proxmox-backup-file-restore.install b/debian/proxmox-backup-file-restore.install
old mode 100644
new mode 100755
index 409988a3..8b4034bd
--- a/debian/proxmox-backup-file-restore.install
+++ b/debian/proxmox-backup-file-restore.install
@@ -1,4 +1,5 @@
+#! /usr/bin/dh-exec
 usr/bin/proxmox-file-restore
-usr/lib/x86_64-linux-gnu/proxmox-backup/file-restore/proxmox-restore-daemon
+usr/lib/${DEB_HOST_MULTIARCH}/proxmox-backup/file-restore/proxmox-restore-daemon
 usr/share/man/man1/proxmox-file-restore.1
 usr/share/zsh/vendor-completions/_proxmox-file-restore
diff --git a/debian/proxmox-backup-file-restore.postinst b/debian/proxmox-backup-file-restore.postinst
index c73893dd..86faf43a 100755
--- a/debian/proxmox-backup-file-restore.postinst
+++ b/debian/proxmox-backup-file-restore.postinst
@@ -3,8 +3,16 @@
 set -e
 
 update_initramfs() {
+    case "$(dpkg --print-architecture)" in
+        amd64) INST_PATH="/usr/lib/x86_64-linux-gnu/proxmox-backup/file-restore" ;;
+        arm64) INST_PATH="/usr/lib/aarch64-linux-gnu/proxmox-backup/file-restore" ;;
+        *)
+            echo "proxmox-backup-file-restore: architecture not supported, skipping update." >&2
+            exit 0
+            ;;
+    esac
+
     # regenerate initramfs for single file restore VM
-    INST_PATH="/usr/lib/x86_64-linux-gnu/proxmox-backup/file-restore"
     CACHE_PATH="/var/cache/proxmox-backup/file-restore-initramfs.img"
     CACHE_PATH_DBG="/var/cache/proxmox-backup/file-restore-initramfs-debug.img"
 
diff --git a/debian/proxmox-backup-server.install b/debian/proxmox-backup-server.install
old mode 100644
new mode 100755
index d06f026c..f305af37
--- a/debian/proxmox-backup-server.install
+++ b/debian/proxmox-backup-server.install
@@ -1,3 +1,4 @@
+#! /usr/bin/dh-exec
 etc/pbs-enterprise.sources /etc/apt/sources.list.d/
 etc/pbs-network-config-commit.service /usr/lib/systemd/system/
 etc/proxmox-backup-banner.service /usr/lib/systemd/system/
@@ -9,11 +10,11 @@ etc/removable-device-attach at .service /usr/lib/systemd/system/
 usr/bin/pmt
 usr/bin/pmtx
 usr/bin/proxmox-tape
-usr/lib/x86_64-linux-gnu/proxmox-backup/proxmox-backup-api
-usr/lib/x86_64-linux-gnu/proxmox-backup/proxmox-backup-banner
-usr/lib/x86_64-linux-gnu/proxmox-backup/proxmox-backup-proxy
-usr/lib/x86_64-linux-gnu/proxmox-backup/proxmox-daily-update
-usr/lib/x86_64-linux-gnu/proxmox-backup/sg-tape-cmd
+usr/lib/${DEB_HOST_MULTIARCH}/proxmox-backup/proxmox-backup-api
+usr/lib/${DEB_HOST_MULTIARCH}/proxmox-backup/proxmox-backup-banner
+usr/lib/${DEB_HOST_MULTIARCH}/proxmox-backup/proxmox-backup-proxy
+usr/lib/${DEB_HOST_MULTIARCH}/proxmox-backup/proxmox-daily-update
+usr/lib/${DEB_HOST_MULTIARCH}/proxmox-backup/sg-tape-cmd
 usr/sbin/pbs3to4
 usr/sbin/proxmox-backup-debug
 usr/sbin/proxmox-backup-manager
diff --git a/debian/rules b/debian/rules
index ab48cce1..a5419da7 100755
--- a/debian/rules
+++ b/debian/rules
@@ -2,6 +2,7 @@
 # See debhelper(7) (uncomment to enable)
 # output every command that modifies files on the build system.
 DH_VERBOSE = 1
+DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH) 
 
 include /usr/share/dpkg/pkg-info.mk
 include /usr/share/rustc/architecture.mk
diff --git a/pbs-buildcfg/src/lib.rs b/pbs-buildcfg/src/lib.rs
index 3d087015..793d4cfd 100644
--- a/pbs-buildcfg/src/lib.rs
+++ b/pbs-buildcfg/src/lib.rs
@@ -52,12 +52,21 @@ macro_rules! PROXMOX_BACKUP_CACHE_DIR_M {
 }
 
 #[macro_export]
+#[cfg(target_arch = "x86_64")]
 macro_rules! PROXMOX_BACKUP_FILE_RESTORE_BIN_DIR_M {
     () => {
         "/usr/lib/x86_64-linux-gnu/proxmox-backup/file-restore"
     };
 }
 
+#[macro_export]
+#[cfg(target_arch = "aarch64")]
+macro_rules! PROXMOX_BACKUP_FILE_RESTORE_BIN_DIR_M {
+    () => {
+        "/usr/lib/aarch64-linux-gnu/proxmox-backup/file-restore"
+    };
+}
+
 /// namespaced directory for in-memory (tmpfs) run state
 pub const PROXMOX_BACKUP_RUN_DIR: &str = PROXMOX_BACKUP_RUN_DIR_M!();
 
diff --git a/src/tape/drive/lto/mod.rs b/src/tape/drive/lto/mod.rs
index bd5ec8ae..0df15933 100644
--- a/src/tape/drive/lto/mod.rs
+++ b/src/tape/drive/lto/mod.rs
@@ -284,9 +284,14 @@ impl TapeDriver for LtoTapeHandle {
     }
 }
 
+#[cfg(target_arch = "x86_64")]
+const SG_TAPE_PATH: &str = "/usr/lib/x86_64-linux-gnu/proxmox-backup/sg-tape-cmd";
+
+#[cfg(target_arch = "aarch64")]
+const SG_TAPE_PATH: &str = "/usr/lib/aarch64-linux-gnu/proxmox-backup/sg-tape-cmd";
+
 fn run_sg_tape_cmd(subcmd: &str, args: &[&str], fd: RawFd) -> Result<String, Error> {
-    let mut command =
-        std::process::Command::new("/usr/lib/x86_64-linux-gnu/proxmox-backup/sg-tape-cmd");
+    let mut command = std::process::Command::new(SG_TAPE_PATH);
     command.args([subcmd]);
     command.args(["--stdin"]);
     command.args(args);
-- 
2.47.2