mirror of
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115 lines
3.4 KiB
Go
115 lines
3.4 KiB
Go
// -*- Mode: Go; indent-tabs-mode: t -*-
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/*
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* Copyright (C) 2016-2020 Canonical Ltd
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 3 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package snapdtool_test
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import (
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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. "gopkg.in/check.v1"
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"github.com/snapcore/snapd/dirs"
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"github.com/snapcore/snapd/osutil"
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"github.com/snapcore/snapd/snapdtool"
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)
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var truePath = osutil.LookPathDefault("true", "/bin/true")
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type cmdutilSuite struct{}
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var _ = Suite(&cmdutilSuite{})
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func (s *cmdutilSuite) SetUpTest(c *C) {
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dirs.SetRootDir(c.MkDir())
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}
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func (s *cmdutilSuite) TearDownTest(c *C) {
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dirs.SetRootDir("")
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}
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func (s *cmdutilSuite) makeMockLdSoConf(c *C, root string) {
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ldSoConf := filepath.Join(root, "/etc/ld.so.conf")
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ldSoConfD := ldSoConf + ".d"
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err := os.MkdirAll(filepath.Dir(ldSoConf), 0755)
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c.Assert(err, IsNil)
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err = os.MkdirAll(ldSoConfD, 0755)
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c.Assert(err, IsNil)
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err = ioutil.WriteFile(ldSoConf, []byte("include /etc/ld.so.conf.d/*.conf"), 0644)
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c.Assert(err, IsNil)
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ldSoConf1 := filepath.Join(ldSoConfD, "x86_64-linux-gnu.conf")
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err = ioutil.WriteFile(ldSoConf1, []byte(`
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# Multiarch support
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/lib/x86_64-linux-gnu
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/usr/lib/x86_64-linux-gnu`), 0644)
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c.Assert(err, IsNil)
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}
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func (s *cmdutilSuite) TestCommandFromSystemSnap(c *C) {
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for _, snap := range []string{"core", "snapd"} {
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root := filepath.Join(dirs.SnapMountDir, snap, "current")
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s.makeMockLdSoConf(c, root)
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os.MkdirAll(filepath.Join(root, "/usr/bin"), 0755)
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osutil.CopyFile(truePath, filepath.Join(root, "/usr/bin/xdelta3"), 0)
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cmd, err := snapdtool.CommandFromSystemSnap("/usr/bin/xdelta3", "--some-xdelta-arg")
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c.Assert(err, IsNil)
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out, err := exec.Command("/bin/sh", "-c", fmt.Sprintf("readelf -l %s |grep interpreter:|cut -f2 -d:|cut -f1 -d]", truePath)).Output()
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c.Assert(err, IsNil)
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interp := strings.TrimSpace(string(out))
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c.Check(cmd.Args, DeepEquals, []string{
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filepath.Join(root, interp),
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"--library-path",
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fmt.Sprintf("%s/lib/x86_64-linux-gnu:%s/usr/lib/x86_64-linux-gnu", root, root),
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filepath.Join(root, "/usr/bin/xdelta3"),
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"--some-xdelta-arg",
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})
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}
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}
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func (s *cmdutilSuite) TestCommandFromCoreSymlinkCycle(c *C) {
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root := filepath.Join(dirs.SnapMountDir, "/core/current")
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s.makeMockLdSoConf(c, root)
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os.MkdirAll(filepath.Join(root, "/usr/bin"), 0755)
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osutil.CopyFile(truePath, filepath.Join(root, "/usr/bin/xdelta3"), 0)
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out, err := exec.Command("/bin/sh", "-c", "readelf -l /bin/true |grep interpreter:|cut -f2 -d:|cut -f1 -d]").Output()
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c.Assert(err, IsNil)
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interp := strings.TrimSpace(string(out))
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coreInterp := filepath.Join(root, interp)
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c.Assert(os.MkdirAll(filepath.Dir(coreInterp), 0755), IsNil)
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c.Assert(os.Symlink(filepath.Base(coreInterp), coreInterp), IsNil)
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_, err = snapdtool.CommandFromSystemSnap("/usr/bin/xdelta3", "--some-xdelta-arg")
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c.Assert(err, ErrorMatches, "cannot run command from core: symlink cycle found")
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}
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