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|
// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2025 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package syscheck
import (
"fmt"
"github.com/snapcore/snapd/dirs"
"github.com/snapcore/snapd/release"
)
func init() {
checks = append(checks, checkSnapMountDir, checkLibExecDir)
}
var (
// distributions known to use /snap/
defaultDirDistros = []string{
"ubuntu",
"ubuntu-core",
"ubuntucoreinitramfs",
"debian",
"opensuse",
"suse",
"yocto",
}
// distributions known to use /var/lib/snapd/snap/
altDirDistros = []string{
"altlinux",
"antergos",
"arch",
"archlinux",
"fedora",
"gentoo",
"manjaro",
"manjaro-arm",
}
// distributions which support migration from /snap to /var/lib/snapd/snap
migratedAltDirDistros = []string{
"opensuse", // openSUSE Tumbleweed, Slowroll, Leap, but not SLE
}
)
func checkSnapMountDir() error {
if err := dirs.SnapMountDirDetectionOutcome(); err != nil {
return err
}
smd := dirs.StripRootDir(dirs.SnapMountDir)
switch {
case release.DistroLike(migratedAltDirDistros...) && smd == dirs.AltSnapMountDir:
// some distributions support migration from /snap -> /var/lib/snapd/snap/
case release.DistroLike(defaultDirDistros...) && smd != dirs.DefaultSnapMountDir:
fallthrough
case release.DistroLike(altDirDistros...) && smd != dirs.AltSnapMountDir:
return fmt.Errorf("unexpected snap mount directory %v on %v", smd, release.ReleaseInfo.ID)
}
return nil
}
var (
// distributions known to use /usr/lib/snapd/
defaulLibExectDirDistros = []string{
"ubuntu",
"ubuntu-core",
"ubuntucoreinitramfs",
"debian",
"yocto",
"altlinux",
"antergos",
"arch",
"archlinux",
"gentoo",
"manjaro",
"manjaro-arm",
}
// distributions known to use /usr/libexec/snapd/
altLibExecDirDistros = []string{
"fedora",
"opensuse-tumbleweed",
"opensuse-slowroll",
}
bothLibExecDirDistros = []string{
"opensuse-leap", // openSUSE Leap uses /usr/libexec/snapd
// starting from 16.0, but used /usr/lib/snapd
// in earlier versions
}
)
func checkLibExecDir() error {
d := dirs.StripRootDir(dirs.DistroLibExecDir)
switch {
case release.DistroLike(bothLibExecDirDistros...):
// Distributions which use either location, likely depending on their
// version, but doing version check is too much a hassle. openSUSE Leap is
// one of those cases.
case release.DistroLike(altLibExecDirDistros...) && d != dirs.AltDistroLibexecDir:
// RHEL, CentOS, Fedora and derivatives, openSUSE Tumbleweed (since
// snapshot 20200826) and Slowroll; both RHEL and CentOS list "fedora"
// in ID_LIKE
fallthrough
case release.DistroLike(defaulLibExectDirDistros...) && d != dirs.DefaultDistroLibexecDir:
return fmt.Errorf("unexpected snapd tooling directory %v on %v", d, release.ReleaseInfo.ID)
}
return nil
}
|
