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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2018 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_test
import (
"os"
"path/filepath"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/dirs"
"github.com/snapcore/snapd/osutil"
"github.com/snapcore/snapd/release"
"github.com/snapcore/snapd/syscheck"
)
type versionSuite struct{}
var _ = Suite(&versionSuite{})
func (s *syscheckSuite) TestFreshInstallOfSnapdOnTrusty(c *C) {
// Mock an Ubuntu 14.04 system running a 3.13.0 kernel
restore := release.MockOnClassic(true)
defer restore()
restore = release.MockReleaseInfo(&release.OS{ID: "ubuntu", VersionID: "14.04"})
defer restore()
restore = osutil.MockKernelVersion("3.13.0-35-generic")
defer restore()
// Check for the given advice.
err := syscheck.CheckKernelVersion()
c.Assert(err, ErrorMatches, "you need to reboot into a 4.4 kernel to start using snapd")
}
func (s *syscheckSuite) TestRebootedOnTrusty(c *C) {
// Mock an Ubuntu 14.04 system running a 4.4.0 kernel
restore := release.MockOnClassic(true)
defer restore()
restore = release.MockReleaseInfo(&release.OS{ID: "ubuntu", VersionID: "14.04"})
defer restore()
restore = osutil.MockKernelVersion("4.4.0-112-generic")
defer restore()
// Check for the given advice.
err := syscheck.CheckKernelVersion()
c.Assert(err, IsNil)
}
func (s *syscheckSuite) TestRHEL80OK(c *C) {
// Mock an Ubuntu 14.04 system running a 4.4.0 kernel
restore := release.MockOnClassic(true)
defer restore()
restore = release.MockReleaseInfo(&release.OS{ID: "rhel", VersionID: "8.0"})
defer restore()
// RHEL 8 beta
restore = osutil.MockKernelVersion("4.18.0-32.el8.x86_64")
defer restore()
// Check for the given advice.
err := syscheck.CheckKernelVersion()
c.Assert(err, IsNil)
}
func (s *syscheckSuite) TestRHEL7x(c *C) {
dir := c.MkDir()
dirs.SetRootDir(dir)
defer dirs.SetRootDir("/")
// mock RHEL 7.6
restore := release.MockOnClassic(true)
defer restore()
// VERSION="7.6 (Maipo)"
// ID="rhel"
// ID_LIKE="fedora"
// VERSION_ID="7.6"
restore = release.MockReleaseInfo(&release.OS{ID: "rhel", VersionID: "7.6"})
defer restore()
restore = osutil.MockKernelVersion("3.10.0-957.el7.x86_64")
defer restore()
// pretend the kernel knob is not there
err := syscheck.CheckKernelVersion()
c.Assert(err, ErrorMatches, "cannot read the value of fs.may_detach_mounts kernel parameter: .*")
p := filepath.Join(dir, "/proc/sys/fs/may_detach_mounts")
err = os.MkdirAll(filepath.Dir(p), 0755)
c.Assert(err, IsNil)
// the knob is there, but disabled
err = os.WriteFile(p, []byte("0\n"), 0644)
c.Assert(err, IsNil)
err = syscheck.CheckKernelVersion()
c.Assert(err, ErrorMatches, "fs.may_detach_mounts kernel parameter is supported but disabled")
// actually enabled
err = os.WriteFile(p, []byte("1\n"), 0644)
c.Assert(err, IsNil)
err = syscheck.CheckKernelVersion()
c.Assert(err, IsNil)
// custom kernel version, which is old and we have no knowledge about
restore = osutil.MockKernelVersion("3.10.0-1024.foo.x86_64")
defer restore()
err = syscheck.CheckKernelVersion()
c.Assert(err, ErrorMatches, `unsupported kernel version "3.10.0-1024.foo.x86_64", you need to switch to the stock kernel`)
// custom kernel version, but new enough
restore = osutil.MockKernelVersion("4.18.0-32.foo.x86_64")
defer restore()
err = syscheck.CheckKernelVersion()
c.Assert(err, IsNil)
}
func (s *syscheckSuite) TestCentOS7x(c *C) {
dir := c.MkDir()
dirs.SetRootDir(dir)
defer dirs.SetRootDir("/")
// mock CentOS 7.5
restore := release.MockOnClassic(true)
defer restore()
// NAME="CentOS Linux"
// VERSION="7 (Core)"
// ID="centos"
// ID_LIKE="rhel fedora"
// VERSION_ID="7"
restore = release.MockReleaseInfo(&release.OS{ID: "centos", VersionID: "7"})
defer restore()
restore = osutil.MockKernelVersion("3.10.0-862.14.4.el7.x86_64")
defer restore()
p := filepath.Join(dir, "/proc/sys/fs/may_detach_mounts")
err := os.MkdirAll(filepath.Dir(p), 0755)
c.Assert(err, IsNil)
// the knob there, but disabled
err = os.WriteFile(p, []byte("0\n"), 0644)
c.Assert(err, IsNil)
err = syscheck.CheckKernelVersion()
c.Assert(err, ErrorMatches, "fs.may_detach_mounts kernel parameter is supported but disabled")
// actually enabled
err = os.WriteFile(p, []byte("1\n"), 0644)
c.Assert(err, IsNil)
err = syscheck.CheckKernelVersion()
c.Assert(err, IsNil)
}
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