File 0002-dirs-account-for-openSUSE-Slowroll.patch of Package snapd

From 3c27d3d693e5c5464992833204042c0a778f8ebe Mon Sep 17 00:00:00 2001
Message-ID: <3c27d3d693e5c5464992833204042c0a778f8ebe.1726645765.git.maciej.borzecki@canonical.com>
From: Maciej Borzecki <maciej.borzecki@canonical.com>
Date: Tue, 17 Sep 2024 08:21:28 +0200
Subject: [PATCH] dirs: account for openSUSE Slowroll

openSUSE Slowroll is a less frequently updated variant of Tumbleweed.
However, it still carries its own unique ID="opensuse-slowroll" in
/etc/os-release and thus causes incorrect identification of the libexec
directory. See [1] for details.

1. https://forum.snapcraft.io/t/tumbleweed-snapd-service-wont-start/42148

Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
---
 dirs/dirs.go      | 19 ++++++++++++++++---
 dirs/dirs_test.go | 16 ++++++++++++++--
 2 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/dirs/dirs.go b/dirs/dirs.go
index df57ce80f45f64c68d269e1069f5deaa2cb94b34..f1d441ee33fec1cfbbb1c641f77a10c35565da0c 100644
--- a/dirs/dirs.go
+++ b/dirs/dirs.go
@@ -552,27 +552,40 @@ func SetRootDir(rootdir string) {
 	LocaleDir = filepath.Join(rootdir, "/usr/share/locale")
 	ClassicDir = filepath.Join(rootdir, "/writable/classic")
 
-	opensuseTWWithLibexec := func() bool {
+	opensuseFlavorWithLibexec := func() bool {
 		// XXX: this is pretty naive if openSUSE ever starts going back
 		// and forth about the change
+
+		if release.DistroLike("opensuse-slowroll") {
+			// Slowroll does not need further checks, it has used /usr/libexec
+			// since the start
+			return true
+		}
+
 		if !release.DistroLike("opensuse-tumbleweed") {
+			// Leap and the like, are there others?
 			return false
 		}
+
+		// TW snapshots are YYYYMMDD
 		v, err := strconv.Atoi(release.ReleaseInfo.VersionID)
 		if err != nil {
 			// nothing we can do here
 			return false
 		}
+
+		// TODO: drop? do we still care about such old snapshot?
 		// first seen on snapshot "20200826"
 		if v < 20200826 {
 			return false
 		}
+
 		return true
 	}
 
-	if release.DistroLike("fedora") || opensuseTWWithLibexec() {
+	if release.DistroLike("fedora") || opensuseFlavorWithLibexec() {
 		// RHEL, CentOS, Fedora and derivatives, some more recent
-		// snapshots of openSUSE Tumbleweed;
+		// snapshots of openSUSE Tumbleweed and Slowroll;
 		// both RHEL and CentOS list "fedora" in ID_LIKE
 		DistroLibExecDir = filepath.Join(rootdir, "/usr/libexec/snapd")
 	} else {
diff --git a/dirs/dirs_test.go b/dirs/dirs_test.go
index 39abbd017d6120871b43f982c3fb0c094f2b0264..e0aa31489cf8a39c8af75031e83e8b7b324107f3 100644
--- a/dirs/dirs_test.go
+++ b/dirs/dirs_test.go
@@ -262,8 +262,14 @@ func (s *DirsTestSuite) TestAddRootDirCallback(c *C) {
 	c.Assert(someDerivedVar, Equals, filepath.Join("/hello", "var", "snap", "other", "mnt"))
 }
 
-func (s *DirsTestSuite) TestLibexecdirOpenSUSETW(c *C) {
-	restore := release.MockReleaseInfo(&release.OS{ID: "opensuse-tumbleweed", VersionID: "20200820"})
+func (s *DirsTestSuite) TestLibexecdirOpenSUSEFlavors(c *C) {
+	restore := release.MockReleaseInfo(&release.OS{ID: "opensuse-leap",
+		IDLike: []string{"suse", "opensuse"}, VersionID: "15.6"})
+	defer restore()
+	dirs.SetRootDir("/")
+	c.Check(dirs.DistroLibExecDir, Equals, "/usr/lib/snapd")
+
+	restore = release.MockReleaseInfo(&release.OS{ID: "opensuse-tumbleweed", VersionID: "20200820"})
 	defer restore()
 	dirs.SetRootDir("/")
 	c.Check(dirs.DistroLibExecDir, Equals, "/usr/lib/snapd")
@@ -277,4 +283,10 @@ func (s *DirsTestSuite) TestLibexecdirOpenSUSETW(c *C) {
 	defer restore()
 	dirs.SetRootDir("/")
 	c.Check(dirs.DistroLibExecDir, Equals, "/usr/libexec/snapd")
+
+	// from https://forum.snapcraft.io/t/tumbleweed-snapd-service-wont-start/42148
+	restore = release.MockReleaseInfo(&release.OS{ID: "opensuse-slowroll", VersionID: "20240904"})
+	defer restore()
+	dirs.SetRootDir("/")
+	c.Check(dirs.DistroLibExecDir, Equals, "/usr/libexec/snapd")
 }
-- 
2.46.0