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build: move e2e dependencies into e2e/go.mod

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Several packages are only used while running the e2e suite. These
packages are less important to update, as the they can not influence the
final executable that is part of the Ceph-CSI container-image.

By moving these dependencies out of the main Ceph-CSI go.mod, it is
easier to identify if a reported CVE affects Ceph-CSI, or only the
testing (like most of the Kubernetes CVEs).

Signed-off-by: Niels de Vos <ndevos@ibm.com>
This commit is contained in:
Niels de Vos
2025-03-04 08:57:28 +01:00
committed by mergify[bot]
parent 15da101b1b
commit bec6090996
8047 changed files with 1407827 additions and 3453 deletions
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202
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// Package mountinfo provides a set of functions to retrieve information about OS mounts.
//
// Currently it supports Linux. For historical reasons, there is also some support for FreeBSD and OpenBSD,
// and a shallow implementation for Windows, but in general this is Linux-only package, so
// the rest of the document only applies to Linux, unless explicitly specified otherwise.
//
// In Linux, information about mounts seen by the current process is available from
// /proc/self/mountinfo. Note that due to mount namespaces, different processes can
// see different mounts. A per-process mountinfo table is available from /proc/<PID>/mountinfo,
// where <PID> is a numerical process identifier.
//
// In general, /proc is not a very efficient interface, and mountinfo is not an exception.
// For example, there is no way to get information about a specific mount point (i.e. it
// is all-or-nothing). This package tries to hide the /proc ineffectiveness by using
// parse filters while reading mountinfo. A filter can skip some entries, or stop
// processing the rest of the file once the needed information is found.
//
// For mountinfo filters that accept path as an argument, the path must be absolute,
// having all symlinks resolved, and being cleaned (i.e. no extra slashes or dots).
// One way to achieve all of the above is to employ filepath.Abs followed by
// filepath.EvalSymlinks (the latter calls filepath.Clean on the result so
// there is no need to explicitly call filepath.Clean).
//
// NOTE that in many cases there is no need to consult mountinfo at all. Here are some
// of the cases where mountinfo should not be parsed:
//
// 1. Before performing a mount. Usually, this is not needed, but if required (say to
// prevent over-mounts), to check whether a directory is mounted, call os.Lstat
// on it and its parent directory, and compare their st.Sys().(*syscall.Stat_t).Dev
// fields -- if they differ, then the directory is the mount point. NOTE this does
// not work for bind mounts. Optionally, the filesystem type can also be checked
// by calling unix.Statfs and checking the Type field (i.e. filesystem type).
//
// 2. After performing a mount. If there is no error returned, the mount succeeded;
// checking the mount table for a new mount is redundant and expensive.
//
// 3. Before performing an unmount. It is more efficient to do an unmount and ignore
// a specific error (EINVAL) which tells the directory is not mounted.
//
// 4. After performing an unmount. If there is no error returned, the unmount succeeded.
//
// 5. To find the mount point root of a specific directory. You can perform os.Stat()
// on the directory and traverse up until the Dev field of a parent directory differs.
package mountinfo

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package mountinfo
import (
"os"
"path/filepath"
"golang.org/x/sys/unix"
)
// MountedFast is a method of detecting a mount point without reading
// mountinfo from procfs. A caller can only trust the result if no error
// and sure == true are returned. Otherwise, other methods (e.g. parsing
// /proc/mounts) have to be used. If unsure, use Mounted instead (which
// uses MountedFast, but falls back to parsing mountinfo if needed).
//
// If a non-existent path is specified, an appropriate error is returned.
// In case the caller is not interested in this particular error, it should
// be handled separately using e.g. errors.Is(err, fs.ErrNotExist).
//
// This function is only available on Linux. When available (since kernel
// v5.6), openat2(2) syscall is used to reliably detect all mounts. Otherwise,
// the implementation falls back to using stat(2), which can reliably detect
// normal (but not bind) mounts.
func MountedFast(path string) (mounted, sure bool, err error) {
// Root is always mounted.
if path == string(os.PathSeparator) {
return true, true, nil
}
path, err = normalizePath(path)
if err != nil {
return false, false, err
}
mounted, sure, err = mountedFast(path)
return
}
// mountedByOpenat2 is a method of detecting a mount that works for all kinds
// of mounts (incl. bind mounts), but requires a recent (v5.6+) linux kernel.
func mountedByOpenat2(path string) (bool, error) {
dir, last := filepath.Split(path)
dirfd, err := unix.Openat2(unix.AT_FDCWD, dir, &unix.OpenHow{
Flags: unix.O_PATH | unix.O_CLOEXEC,
})
if err != nil {
return false, &os.PathError{Op: "openat2", Path: dir, Err: err}
}
fd, err := unix.Openat2(dirfd, last, &unix.OpenHow{
Flags: unix.O_PATH | unix.O_CLOEXEC | unix.O_NOFOLLOW,
Resolve: unix.RESOLVE_NO_XDEV,
})
_ = unix.Close(dirfd)
switch err {
case nil: // definitely not a mount
_ = unix.Close(fd)
return false, nil
case unix.EXDEV: // definitely a mount
return true, nil
}
// not sure
return false, &os.PathError{Op: "openat2", Path: path, Err: err}
}
// mountedFast is similar to MountedFast, except it expects a normalized path.
func mountedFast(path string) (mounted, sure bool, err error) {
// Root is always mounted.
if path == string(os.PathSeparator) {
return true, true, nil
}
// Try a fast path, using openat2() with RESOLVE_NO_XDEV.
mounted, err = mountedByOpenat2(path)
if err == nil {
return mounted, true, nil
}
// Another fast path: compare st.st_dev fields.
mounted, err = mountedByStat(path)
// This does not work for bind mounts, so false negative
// is possible, therefore only trust if return is true.
if mounted && err == nil {
return true, true, nil
}
return
}
func mounted(path string) (bool, error) {
path, err := normalizePath(path)
if err != nil {
return false, err
}
mounted, sure, err := mountedFast(path)
if sure && err == nil {
return mounted, nil
}
// Fallback to parsing mountinfo.
return mountedByMountinfo(path)
}

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//go:build linux || freebsd || openbsd || darwin
// +build linux freebsd openbsd darwin
package mountinfo
import (
"os"
"path/filepath"
"golang.org/x/sys/unix"
)
func mountedByStat(path string) (bool, error) {
var st unix.Stat_t
if err := unix.Lstat(path, &st); err != nil {
return false, &os.PathError{Op: "stat", Path: path, Err: err}
}
dev := st.Dev
parent := filepath.Dir(path)
if err := unix.Lstat(parent, &st); err != nil {
return false, &os.PathError{Op: "stat", Path: parent, Err: err}
}
if dev != st.Dev {
// Device differs from that of parent,
// so definitely a mount point.
return true, nil
}
// NB: this does not detect bind mounts on Linux.
return false, nil
}
func normalizePath(path string) (realPath string, err error) {
if realPath, err = filepath.Abs(path); err != nil {
return "", err
}
if realPath, err = filepath.EvalSymlinks(realPath); err != nil {
return "", err
}
if _, err := os.Stat(realPath); err != nil {
return "", err
}
return realPath, nil
}
func mountedByMountinfo(path string) (bool, error) {
entries, err := GetMounts(SingleEntryFilter(path))
if err != nil {
return false, err
}
return len(entries) > 0, nil
}

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package mountinfo
import (
"os"
)
// GetMounts retrieves a list of mounts for the current running process,
// with an optional filter applied (use nil for no filter).
func GetMounts(f FilterFunc) ([]*Info, error) {
return parseMountTable(f)
}
// Mounted determines if a specified path is a mount point. In case of any
// error, false (and an error) is returned.
//
// If a non-existent path is specified, an appropriate error is returned.
// In case the caller is not interested in this particular error, it should
// be handled separately using e.g. errors.Is(err, fs.ErrNotExist).
func Mounted(path string) (bool, error) {
// root is always mounted
if path == string(os.PathSeparator) {
return true, nil
}
return mounted(path)
}
// Info reveals information about a particular mounted filesystem. This
// struct is populated from the content in the /proc/<pid>/mountinfo file.
type Info struct {
// ID is a unique identifier of the mount (may be reused after umount).
ID int
// Parent is the ID of the parent mount (or of self for the root
// of this mount namespace's mount tree).
Parent int
// Major and Minor are the major and the minor components of the Dev
// field of unix.Stat_t structure returned by unix.*Stat calls for
// files on this filesystem.
Major, Minor int
// Root is the pathname of the directory in the filesystem which forms
// the root of this mount.
Root string
// Mountpoint is the pathname of the mount point relative to the
// process's root directory.
Mountpoint string
// Options is a comma-separated list of mount options.
Options string
// Optional are zero or more fields of the form "tag[:value]",
// separated by a space. Currently, the possible optional fields are
// "shared", "master", "propagate_from", and "unbindable". For more
// information, see mount_namespaces(7) Linux man page.
Optional string
// FSType is the filesystem type in the form "type[.subtype]".
FSType string
// Source is filesystem-specific information, or "none".
Source string
// VFSOptions is a comma-separated list of superblock options.
VFSOptions string
}

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//go:build freebsd || openbsd || darwin
// +build freebsd openbsd darwin
package mountinfo
import "golang.org/x/sys/unix"
// parseMountTable returns information about mounted filesystems
func parseMountTable(filter FilterFunc) ([]*Info, error) {
count, err := unix.Getfsstat(nil, unix.MNT_WAIT)
if err != nil {
return nil, err
}
entries := make([]unix.Statfs_t, count)
_, err = unix.Getfsstat(entries, unix.MNT_WAIT)
if err != nil {
return nil, err
}
var out []*Info
for _, entry := range entries {
var skip, stop bool
mountinfo := getMountinfo(&entry)
if filter != nil {
// filter out entries we're not interested in
skip, stop = filter(mountinfo)
if skip {
continue
}
}
out = append(out, mountinfo)
if stop {
break
}
}
return out, nil
}
func mounted(path string) (bool, error) {
path, err := normalizePath(path)
if err != nil {
return false, err
}
// Fast path: compare st.st_dev fields.
// This should always work for FreeBSD and OpenBSD.
mounted, err := mountedByStat(path)
if err == nil {
return mounted, nil
}
// Fallback to parsing mountinfo
return mountedByMountinfo(path)
}

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package mountinfo
import "strings"
// FilterFunc is a type defining a callback function for GetMount(),
// used to filter out mountinfo entries we're not interested in,
// and/or stop further processing if we found what we wanted.
//
// It takes a pointer to the Info struct (fully populated with all available
// fields on the GOOS platform), and returns two booleans:
//
// skip: true if the entry should be skipped;
//
// stop: true if parsing should be stopped after the entry.
type FilterFunc func(*Info) (skip, stop bool)
// PrefixFilter discards all entries whose mount points do not start with, or
// are equal to the path specified in prefix. The prefix path must be absolute,
// have all symlinks resolved, and cleaned (i.e. no extra slashes or dots).
//
// PrefixFilter treats prefix as a path, not a partial prefix, which means that
// given "/foo", "/foo/bar" and "/foobar" entries, PrefixFilter("/foo") returns
// "/foo" and "/foo/bar", and discards "/foobar".
func PrefixFilter(prefix string) FilterFunc {
return func(m *Info) (bool, bool) {
skip := !strings.HasPrefix(m.Mountpoint+"/", prefix+"/")
return skip, false
}
}
// SingleEntryFilter looks for a specific entry.
func SingleEntryFilter(mp string) FilterFunc {
return func(m *Info) (bool, bool) {
if m.Mountpoint == mp {
return false, true // don't skip, stop now
}
return true, false // skip, keep going
}
}
// ParentsFilter returns all entries whose mount points
// can be parents of a path specified, discarding others.
//
// For example, given /var/lib/docker/something, entries
// like /var/lib/docker, /var and / are returned.
func ParentsFilter(path string) FilterFunc {
return func(m *Info) (bool, bool) {
skip := !strings.HasPrefix(path, m.Mountpoint)
return skip, false
}
}
// FSTypeFilter returns all entries that match provided fstype(s).
func FSTypeFilter(fstype ...string) FilterFunc {
return func(m *Info) (bool, bool) {
for _, t := range fstype {
if m.FSType == t {
return false, false // don't skip, keep going
}
}
return true, false // skip, keep going
}
}

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e2e/vendor/github.com/moby/sys/mountinfo/mountinfo_freebsdlike.go generated vendored Normal file
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//go:build freebsd || darwin
// +build freebsd darwin
package mountinfo
import "golang.org/x/sys/unix"
func getMountinfo(entry *unix.Statfs_t) *Info {
return &Info{
Mountpoint: unix.ByteSliceToString(entry.Mntonname[:]),
FSType: unix.ByteSliceToString(entry.Fstypename[:]),
Source: unix.ByteSliceToString(entry.Mntfromname[:]),
}
}

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package mountinfo
import (
"bufio"
"fmt"
"io"
"os"
"runtime"
"strconv"
"strings"
"sync"
"golang.org/x/sys/unix"
)
// GetMountsFromReader retrieves a list of mounts from the
// reader provided, with an optional filter applied (use nil
// for no filter). This can be useful in tests or benchmarks
// that provide fake mountinfo data, or when a source other
// than /proc/thread-self/mountinfo needs to be read from.
//
// This function is Linux-specific.
func GetMountsFromReader(r io.Reader, filter FilterFunc) ([]*Info, error) {
s := bufio.NewScanner(r)
out := []*Info{}
for s.Scan() {
var err error
/*
See http://man7.org/linux/man-pages/man5/proc.5.html
36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
(1)(2)(3) (4) (5) (6) (7) (8) (9) (10) (11)
(1) mount ID: unique identifier of the mount (may be reused after umount)
(2) parent ID: ID of parent (or of self for the top of the mount tree)
(3) major:minor: value of st_dev for files on filesystem
(4) root: root of the mount within the filesystem
(5) mount point: mount point relative to the process's root
(6) mount options: per mount options
(7) optional fields: zero or more fields of the form "tag[:value]"
(8) separator: marks the end of the optional fields
(9) filesystem type: name of filesystem of the form "type[.subtype]"
(10) mount source: filesystem specific information or "none"
(11) super options: per super block options
In other words, we have:
* 6 mandatory fields (1)..(6)
* 0 or more optional fields (7)
* a separator field (8)
* 3 mandatory fields (9)..(11)
*/
text := s.Text()
fields := strings.Split(text, " ")
numFields := len(fields)
if numFields < 10 {
// should be at least 10 fields
return nil, fmt.Errorf("parsing '%s' failed: not enough fields (%d)", text, numFields)
}
// separator field
sepIdx := numFields - 4
// In Linux <= 3.9 mounting a cifs with spaces in a share
// name (like "//srv/My Docs") _may_ end up having a space
// in the last field of mountinfo (like "unc=//serv/My Docs").
// Since kernel 3.10-rc1, cifs option "unc=" is ignored,
// so spaces should not appear.
//
// Check for a separator, and work around the spaces bug
for fields[sepIdx] != "-" {
sepIdx--
if sepIdx == 5 {
return nil, fmt.Errorf("parsing '%s' failed: missing - separator", text)
}
}
p := &Info{}
p.Mountpoint, err = unescape(fields[4])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: mount point: %w", fields[4], err)
}
p.FSType, err = unescape(fields[sepIdx+1])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: fstype: %w", fields[sepIdx+1], err)
}
p.Source, err = unescape(fields[sepIdx+2])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: source: %w", fields[sepIdx+2], err)
}
p.VFSOptions = fields[sepIdx+3]
// ignore any numbers parsing errors, as there should not be any
p.ID, _ = strconv.Atoi(fields[0])
p.Parent, _ = strconv.Atoi(fields[1])
mm := strings.SplitN(fields[2], ":", 3)
if len(mm) != 2 {
return nil, fmt.Errorf("parsing '%s' failed: unexpected major:minor pair %s", text, mm)
}
p.Major, _ = strconv.Atoi(mm[0])
p.Minor, _ = strconv.Atoi(mm[1])
p.Root, err = unescape(fields[3])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: root: %w", fields[3], err)
}
p.Options = fields[5]
// zero or more optional fields
p.Optional = strings.Join(fields[6:sepIdx], " ")
// Run the filter after parsing all fields.
var skip, stop bool
if filter != nil {
skip, stop = filter(p)
if skip {
continue
}
}
out = append(out, p)
if stop {
break
}
}
if err := s.Err(); err != nil {
return nil, err
}
return out, nil
}
var (
haveProcThreadSelf bool
haveProcThreadSelfOnce sync.Once
)
func parseMountTable(filter FilterFunc) (_ []*Info, err error) {
haveProcThreadSelfOnce.Do(func() {
_, err := os.Stat("/proc/thread-self/mountinfo")
haveProcThreadSelf = err == nil
})
// We need to lock ourselves to the current OS thread in order to make sure
// that the thread referenced by /proc/thread-self stays alive until we
// finish parsing the file.
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var f *os.File
if haveProcThreadSelf {
f, err = os.Open("/proc/thread-self/mountinfo")
} else {
// On pre-3.17 kernels (such as CentOS 7), we don't have
// /proc/thread-self/ so we need to manually construct
// /proc/self/task/<tid>/ as a fallback.
f, err = os.Open("/proc/self/task/" + strconv.Itoa(unix.Gettid()) + "/mountinfo")
if os.IsNotExist(err) {
// If /proc/self/task/... failed, it means that our active pid
// namespace doesn't match the pid namespace of the /proc mount. In
// this case we just have to make do with /proc/self, since there
// is no other way of figuring out our tid in a parent pid
// namespace on pre-3.17 kernels.
f, err = os.Open("/proc/self/mountinfo")
}
}
if err != nil {
return nil, err
}
defer f.Close()
return GetMountsFromReader(f, filter)
}
// PidMountInfo retrieves the list of mounts from a given process' mount
// namespace. Unless there is a need to get mounts from a mount namespace
// different from that of a calling process, use GetMounts.
//
// This function is Linux-specific.
//
// Deprecated: this will be removed before v1; use GetMountsFromReader with
// opened /proc/<pid>/mountinfo as an argument instead.
func PidMountInfo(pid int) ([]*Info, error) {
f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
if err != nil {
return nil, err
}
defer f.Close()
return GetMountsFromReader(f, nil)
}
// A few specific characters in mountinfo path entries (root and mountpoint)
// are escaped using a backslash followed by a character's ascii code in octal.
//
// space -- as \040
// tab (aka \t) -- as \011
// newline (aka \n) -- as \012
// backslash (aka \\) -- as \134
//
// This function converts path from mountinfo back, i.e. it unescapes the above sequences.
func unescape(path string) (string, error) {
// try to avoid copying
if strings.IndexByte(path, '\\') == -1 {
return path, nil
}
// The following code is UTF-8 transparent as it only looks for some
// specific characters (backslash and 0..7) with values < utf8.RuneSelf,
// and everything else is passed through as is.
buf := make([]byte, len(path))
bufLen := 0
for i := 0; i < len(path); i++ {
if path[i] != '\\' {
buf[bufLen] = path[i]
bufLen++
continue
}
s := path[i:]
if len(s) < 4 {
// too short
return "", fmt.Errorf("bad escape sequence %q: too short", s)
}
c := s[1]
switch c {
case '0', '1', '2', '3', '4', '5', '6', '7':
v := c - '0'
for j := 2; j < 4; j++ { // one digit already; two more
if s[j] < '0' || s[j] > '7' {
return "", fmt.Errorf("bad escape sequence %q: not a digit", s[:3])
}
x := s[j] - '0'
v = (v << 3) | x
}
if v > 255 {
return "", fmt.Errorf("bad escape sequence %q: out of range" + s[:3])
}
buf[bufLen] = v
bufLen++
i += 3
continue
default:
return "", fmt.Errorf("bad escape sequence %q: not a digit" + s[:3])
}
}
return string(buf[:bufLen]), nil
}

11
e2e/vendor/github.com/moby/sys/mountinfo/mountinfo_openbsd.go generated vendored Normal file
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@ -0,0 +1,11 @@
package mountinfo
import "golang.org/x/sys/unix"
func getMountinfo(entry *unix.Statfs_t) *Info {
return &Info{
Mountpoint: unix.ByteSliceToString(entry.F_mntonname[:]),
FSType: unix.ByteSliceToString(entry.F_fstypename[:]),
Source: unix.ByteSliceToString(entry.F_mntfromname[:]),
}
}

19
e2e/vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go generated vendored Normal file
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@ -0,0 +1,19 @@
//go:build !windows && !linux && !freebsd && !openbsd && !darwin
// +build !windows,!linux,!freebsd,!openbsd,!darwin
package mountinfo
import (
"fmt"
"runtime"
)
var errNotImplemented = fmt.Errorf("not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
func parseMountTable(_ FilterFunc) ([]*Info, error) {
return nil, errNotImplemented
}
func mounted(path string) (bool, error) {
return false, errNotImplemented
}

10
e2e/vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go generated vendored Normal file
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@ -0,0 +1,10 @@
package mountinfo
func parseMountTable(_ FilterFunc) ([]*Info, error) {
// Do NOT return an error!
return nil, nil
}
func mounted(_ string) (bool, error) {
return false, nil
}