putting in base query and collector framework
This commit is contained in:
Michael McGuinness
+202
-202
@@ -1,202 +1,202 @@
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+15
-15
@@ -1,15 +1,15 @@
|
||||
// Package sequential provides a set of functions for managing sequential
|
||||
// files on Windows.
|
||||
//
|
||||
// The origin of these functions are the golang OS and windows packages,
|
||||
// slightly modified to only cope with files, not directories due to the
|
||||
// specific use case.
|
||||
//
|
||||
// The alteration is to allow a file on Windows to be opened with
|
||||
// FILE_FLAG_SEQUENTIAL_SCAN (particular for docker load), to avoid eating
|
||||
// the standby list, particularly when accessing large files such as layer.tar.
|
||||
//
|
||||
// For non-Windows platforms, the package provides wrappers for the equivalents
|
||||
// in the os packages. They are passthrough on Unix platforms, and only relevant
|
||||
// on Windows.
|
||||
package sequential
|
||||
// Package sequential provides a set of functions for managing sequential
|
||||
// files on Windows.
|
||||
//
|
||||
// The origin of these functions are the golang OS and windows packages,
|
||||
// slightly modified to only cope with files, not directories due to the
|
||||
// specific use case.
|
||||
//
|
||||
// The alteration is to allow a file on Windows to be opened with
|
||||
// FILE_FLAG_SEQUENTIAL_SCAN (particular for docker load), to avoid eating
|
||||
// the standby list, particularly when accessing large files such as layer.tar.
|
||||
//
|
||||
// For non-Windows platforms, the package provides wrappers for the equivalents
|
||||
// in the os packages. They are passthrough on Unix platforms, and only relevant
|
||||
// on Windows.
|
||||
package sequential
|
||||
|
||||
+45
-45
@@ -1,45 +1,45 @@
|
||||
//go:build !windows
|
||||
// +build !windows
|
||||
|
||||
package sequential
|
||||
|
||||
import "os"
|
||||
|
||||
// Create creates the named file with mode 0666 (before umask), truncating
|
||||
// it if it already exists. If successful, methods on the returned
|
||||
// File can be used for I/O; the associated file descriptor has mode
|
||||
// O_RDWR.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Create(name string) (*os.File, error) {
|
||||
return os.Create(name)
|
||||
}
|
||||
|
||||
// Open opens the named file for reading. If successful, methods on
|
||||
// the returned file can be used for reading; the associated file
|
||||
// descriptor has mode O_RDONLY.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Open(name string) (*os.File, error) {
|
||||
return os.Open(name)
|
||||
}
|
||||
|
||||
// OpenFile is the generalized open call; most users will use Open
|
||||
// or Create instead. It opens the named file with specified flag
|
||||
// (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
|
||||
// methods on the returned File can be used for I/O.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func OpenFile(name string, flag int, perm os.FileMode) (*os.File, error) {
|
||||
return os.OpenFile(name, flag, perm)
|
||||
}
|
||||
|
||||
// CreateTemp creates a new temporary file in the directory dir
|
||||
// with a name beginning with prefix, opens the file for reading
|
||||
// and writing, and returns the resulting *os.File.
|
||||
// If dir is the empty string, TempFile uses the default directory
|
||||
// for temporary files (see os.TempDir).
|
||||
// Multiple programs calling TempFile simultaneously
|
||||
// will not choose the same file. The caller can use f.Name()
|
||||
// to find the pathname of the file. It is the caller's responsibility
|
||||
// to remove the file when no longer needed.
|
||||
func CreateTemp(dir, prefix string) (f *os.File, err error) {
|
||||
return os.CreateTemp(dir, prefix)
|
||||
}
|
||||
//go:build !windows
|
||||
// +build !windows
|
||||
|
||||
package sequential
|
||||
|
||||
import "os"
|
||||
|
||||
// Create creates the named file with mode 0666 (before umask), truncating
|
||||
// it if it already exists. If successful, methods on the returned
|
||||
// File can be used for I/O; the associated file descriptor has mode
|
||||
// O_RDWR.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Create(name string) (*os.File, error) {
|
||||
return os.Create(name)
|
||||
}
|
||||
|
||||
// Open opens the named file for reading. If successful, methods on
|
||||
// the returned file can be used for reading; the associated file
|
||||
// descriptor has mode O_RDONLY.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Open(name string) (*os.File, error) {
|
||||
return os.Open(name)
|
||||
}
|
||||
|
||||
// OpenFile is the generalized open call; most users will use Open
|
||||
// or Create instead. It opens the named file with specified flag
|
||||
// (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
|
||||
// methods on the returned File can be used for I/O.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func OpenFile(name string, flag int, perm os.FileMode) (*os.File, error) {
|
||||
return os.OpenFile(name, flag, perm)
|
||||
}
|
||||
|
||||
// CreateTemp creates a new temporary file in the directory dir
|
||||
// with a name beginning with prefix, opens the file for reading
|
||||
// and writing, and returns the resulting *os.File.
|
||||
// If dir is the empty string, TempFile uses the default directory
|
||||
// for temporary files (see os.TempDir).
|
||||
// Multiple programs calling TempFile simultaneously
|
||||
// will not choose the same file. The caller can use f.Name()
|
||||
// to find the pathname of the file. It is the caller's responsibility
|
||||
// to remove the file when no longer needed.
|
||||
func CreateTemp(dir, prefix string) (f *os.File, err error) {
|
||||
return os.CreateTemp(dir, prefix)
|
||||
}
|
||||
|
||||
+161
-161
@@ -1,161 +1,161 @@
|
||||
package sequential
|
||||
|
||||
import (
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strconv"
|
||||
"sync"
|
||||
"syscall"
|
||||
"time"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/windows"
|
||||
)
|
||||
|
||||
// Create creates the named file with mode 0666 (before umask), truncating
|
||||
// it if it already exists. If successful, methods on the returned
|
||||
// File can be used for I/O; the associated file descriptor has mode
|
||||
// O_RDWR.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Create(name string) (*os.File, error) {
|
||||
return OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0)
|
||||
}
|
||||
|
||||
// Open opens the named file for reading. If successful, methods on
|
||||
// the returned file can be used for reading; the associated file
|
||||
// descriptor has mode O_RDONLY.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Open(name string) (*os.File, error) {
|
||||
return OpenFile(name, os.O_RDONLY, 0)
|
||||
}
|
||||
|
||||
// OpenFile is the generalized open call; most users will use Open
|
||||
// or Create instead.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func OpenFile(name string, flag int, _ os.FileMode) (*os.File, error) {
|
||||
if name == "" {
|
||||
return nil, &os.PathError{Op: "open", Path: name, Err: syscall.ENOENT}
|
||||
}
|
||||
r, err := openFileSequential(name, flag, 0)
|
||||
if err == nil {
|
||||
return r, nil
|
||||
}
|
||||
return nil, &os.PathError{Op: "open", Path: name, Err: err}
|
||||
}
|
||||
|
||||
func openFileSequential(name string, flag int, _ os.FileMode) (file *os.File, err error) {
|
||||
r, e := openSequential(name, flag|windows.O_CLOEXEC, 0)
|
||||
if e != nil {
|
||||
return nil, e
|
||||
}
|
||||
return os.NewFile(uintptr(r), name), nil
|
||||
}
|
||||
|
||||
func makeInheritSa() *windows.SecurityAttributes {
|
||||
var sa windows.SecurityAttributes
|
||||
sa.Length = uint32(unsafe.Sizeof(sa))
|
||||
sa.InheritHandle = 1
|
||||
return &sa
|
||||
}
|
||||
|
||||
func openSequential(path string, mode int, _ uint32) (fd windows.Handle, err error) {
|
||||
if len(path) == 0 {
|
||||
return windows.InvalidHandle, windows.ERROR_FILE_NOT_FOUND
|
||||
}
|
||||
pathp, err := windows.UTF16PtrFromString(path)
|
||||
if err != nil {
|
||||
return windows.InvalidHandle, err
|
||||
}
|
||||
var access uint32
|
||||
switch mode & (windows.O_RDONLY | windows.O_WRONLY | windows.O_RDWR) {
|
||||
case windows.O_RDONLY:
|
||||
access = windows.GENERIC_READ
|
||||
case windows.O_WRONLY:
|
||||
access = windows.GENERIC_WRITE
|
||||
case windows.O_RDWR:
|
||||
access = windows.GENERIC_READ | windows.GENERIC_WRITE
|
||||
}
|
||||
if mode&windows.O_CREAT != 0 {
|
||||
access |= windows.GENERIC_WRITE
|
||||
}
|
||||
if mode&windows.O_APPEND != 0 {
|
||||
access &^= windows.GENERIC_WRITE
|
||||
access |= windows.FILE_APPEND_DATA
|
||||
}
|
||||
sharemode := uint32(windows.FILE_SHARE_READ | windows.FILE_SHARE_WRITE)
|
||||
var sa *windows.SecurityAttributes
|
||||
if mode&windows.O_CLOEXEC == 0 {
|
||||
sa = makeInheritSa()
|
||||
}
|
||||
var createmode uint32
|
||||
switch {
|
||||
case mode&(windows.O_CREAT|windows.O_EXCL) == (windows.O_CREAT | windows.O_EXCL):
|
||||
createmode = windows.CREATE_NEW
|
||||
case mode&(windows.O_CREAT|windows.O_TRUNC) == (windows.O_CREAT | windows.O_TRUNC):
|
||||
createmode = windows.CREATE_ALWAYS
|
||||
case mode&windows.O_CREAT == windows.O_CREAT:
|
||||
createmode = windows.OPEN_ALWAYS
|
||||
case mode&windows.O_TRUNC == windows.O_TRUNC:
|
||||
createmode = windows.TRUNCATE_EXISTING
|
||||
default:
|
||||
createmode = windows.OPEN_EXISTING
|
||||
}
|
||||
// Use FILE_FLAG_SEQUENTIAL_SCAN rather than FILE_ATTRIBUTE_NORMAL as implemented in golang.
|
||||
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858(v=vs.85).aspx
|
||||
const fileFlagSequentialScan = 0x08000000 // FILE_FLAG_SEQUENTIAL_SCAN
|
||||
h, e := windows.CreateFile(pathp, access, sharemode, sa, createmode, fileFlagSequentialScan, 0)
|
||||
return h, e
|
||||
}
|
||||
|
||||
// Helpers for CreateTemp
|
||||
var rand uint32
|
||||
var randmu sync.Mutex
|
||||
|
||||
func reseed() uint32 {
|
||||
return uint32(time.Now().UnixNano() + int64(os.Getpid()))
|
||||
}
|
||||
|
||||
func nextSuffix() string {
|
||||
randmu.Lock()
|
||||
r := rand
|
||||
if r == 0 {
|
||||
r = reseed()
|
||||
}
|
||||
r = r*1664525 + 1013904223 // constants from Numerical Recipes
|
||||
rand = r
|
||||
randmu.Unlock()
|
||||
return strconv.Itoa(int(1e9 + r%1e9))[1:]
|
||||
}
|
||||
|
||||
// CreateTemp is a copy of os.CreateTemp, modified to use sequential
|
||||
// file access. Below is the original comment from golang:
|
||||
// TempFile creates a new temporary file in the directory dir
|
||||
// with a name beginning with prefix, opens the file for reading
|
||||
// and writing, and returns the resulting *os.File.
|
||||
// If dir is the empty string, TempFile uses the default directory
|
||||
// for temporary files (see os.TempDir).
|
||||
// Multiple programs calling TempFile simultaneously
|
||||
// will not choose the same file. The caller can use f.Name()
|
||||
// to find the pathname of the file. It is the caller's responsibility
|
||||
// to remove the file when no longer needed.
|
||||
func CreateTemp(dir, prefix string) (f *os.File, err error) {
|
||||
if dir == "" {
|
||||
dir = os.TempDir()
|
||||
}
|
||||
|
||||
nconflict := 0
|
||||
for i := 0; i < 10000; i++ {
|
||||
name := filepath.Join(dir, prefix+nextSuffix())
|
||||
f, err = OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0o600)
|
||||
if os.IsExist(err) {
|
||||
if nconflict++; nconflict > 10 {
|
||||
randmu.Lock()
|
||||
rand = reseed()
|
||||
randmu.Unlock()
|
||||
}
|
||||
continue
|
||||
}
|
||||
break
|
||||
}
|
||||
return
|
||||
}
|
||||
package sequential
|
||||
|
||||
import (
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strconv"
|
||||
"sync"
|
||||
"syscall"
|
||||
"time"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/windows"
|
||||
)
|
||||
|
||||
// Create creates the named file with mode 0666 (before umask), truncating
|
||||
// it if it already exists. If successful, methods on the returned
|
||||
// File can be used for I/O; the associated file descriptor has mode
|
||||
// O_RDWR.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Create(name string) (*os.File, error) {
|
||||
return OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0)
|
||||
}
|
||||
|
||||
// Open opens the named file for reading. If successful, methods on
|
||||
// the returned file can be used for reading; the associated file
|
||||
// descriptor has mode O_RDONLY.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func Open(name string) (*os.File, error) {
|
||||
return OpenFile(name, os.O_RDONLY, 0)
|
||||
}
|
||||
|
||||
// OpenFile is the generalized open call; most users will use Open
|
||||
// or Create instead.
|
||||
// If there is an error, it will be of type *PathError.
|
||||
func OpenFile(name string, flag int, _ os.FileMode) (*os.File, error) {
|
||||
if name == "" {
|
||||
return nil, &os.PathError{Op: "open", Path: name, Err: syscall.ENOENT}
|
||||
}
|
||||
r, err := openFileSequential(name, flag, 0)
|
||||
if err == nil {
|
||||
return r, nil
|
||||
}
|
||||
return nil, &os.PathError{Op: "open", Path: name, Err: err}
|
||||
}
|
||||
|
||||
func openFileSequential(name string, flag int, _ os.FileMode) (file *os.File, err error) {
|
||||
r, e := openSequential(name, flag|windows.O_CLOEXEC, 0)
|
||||
if e != nil {
|
||||
return nil, e
|
||||
}
|
||||
return os.NewFile(uintptr(r), name), nil
|
||||
}
|
||||
|
||||
func makeInheritSa() *windows.SecurityAttributes {
|
||||
var sa windows.SecurityAttributes
|
||||
sa.Length = uint32(unsafe.Sizeof(sa))
|
||||
sa.InheritHandle = 1
|
||||
return &sa
|
||||
}
|
||||
|
||||
func openSequential(path string, mode int, _ uint32) (fd windows.Handle, err error) {
|
||||
if len(path) == 0 {
|
||||
return windows.InvalidHandle, windows.ERROR_FILE_NOT_FOUND
|
||||
}
|
||||
pathp, err := windows.UTF16PtrFromString(path)
|
||||
if err != nil {
|
||||
return windows.InvalidHandle, err
|
||||
}
|
||||
var access uint32
|
||||
switch mode & (windows.O_RDONLY | windows.O_WRONLY | windows.O_RDWR) {
|
||||
case windows.O_RDONLY:
|
||||
access = windows.GENERIC_READ
|
||||
case windows.O_WRONLY:
|
||||
access = windows.GENERIC_WRITE
|
||||
case windows.O_RDWR:
|
||||
access = windows.GENERIC_READ | windows.GENERIC_WRITE
|
||||
}
|
||||
if mode&windows.O_CREAT != 0 {
|
||||
access |= windows.GENERIC_WRITE
|
||||
}
|
||||
if mode&windows.O_APPEND != 0 {
|
||||
access &^= windows.GENERIC_WRITE
|
||||
access |= windows.FILE_APPEND_DATA
|
||||
}
|
||||
sharemode := uint32(windows.FILE_SHARE_READ | windows.FILE_SHARE_WRITE)
|
||||
var sa *windows.SecurityAttributes
|
||||
if mode&windows.O_CLOEXEC == 0 {
|
||||
sa = makeInheritSa()
|
||||
}
|
||||
var createmode uint32
|
||||
switch {
|
||||
case mode&(windows.O_CREAT|windows.O_EXCL) == (windows.O_CREAT | windows.O_EXCL):
|
||||
createmode = windows.CREATE_NEW
|
||||
case mode&(windows.O_CREAT|windows.O_TRUNC) == (windows.O_CREAT | windows.O_TRUNC):
|
||||
createmode = windows.CREATE_ALWAYS
|
||||
case mode&windows.O_CREAT == windows.O_CREAT:
|
||||
createmode = windows.OPEN_ALWAYS
|
||||
case mode&windows.O_TRUNC == windows.O_TRUNC:
|
||||
createmode = windows.TRUNCATE_EXISTING
|
||||
default:
|
||||
createmode = windows.OPEN_EXISTING
|
||||
}
|
||||
// Use FILE_FLAG_SEQUENTIAL_SCAN rather than FILE_ATTRIBUTE_NORMAL as implemented in golang.
|
||||
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858(v=vs.85).aspx
|
||||
const fileFlagSequentialScan = 0x08000000 // FILE_FLAG_SEQUENTIAL_SCAN
|
||||
h, e := windows.CreateFile(pathp, access, sharemode, sa, createmode, fileFlagSequentialScan, 0)
|
||||
return h, e
|
||||
}
|
||||
|
||||
// Helpers for CreateTemp
|
||||
var rand uint32
|
||||
var randmu sync.Mutex
|
||||
|
||||
func reseed() uint32 {
|
||||
return uint32(time.Now().UnixNano() + int64(os.Getpid()))
|
||||
}
|
||||
|
||||
func nextSuffix() string {
|
||||
randmu.Lock()
|
||||
r := rand
|
||||
if r == 0 {
|
||||
r = reseed()
|
||||
}
|
||||
r = r*1664525 + 1013904223 // constants from Numerical Recipes
|
||||
rand = r
|
||||
randmu.Unlock()
|
||||
return strconv.Itoa(int(1e9 + r%1e9))[1:]
|
||||
}
|
||||
|
||||
// CreateTemp is a copy of os.CreateTemp, modified to use sequential
|
||||
// file access. Below is the original comment from golang:
|
||||
// TempFile creates a new temporary file in the directory dir
|
||||
// with a name beginning with prefix, opens the file for reading
|
||||
// and writing, and returns the resulting *os.File.
|
||||
// If dir is the empty string, TempFile uses the default directory
|
||||
// for temporary files (see os.TempDir).
|
||||
// Multiple programs calling TempFile simultaneously
|
||||
// will not choose the same file. The caller can use f.Name()
|
||||
// to find the pathname of the file. It is the caller's responsibility
|
||||
// to remove the file when no longer needed.
|
||||
func CreateTemp(dir, prefix string) (f *os.File, err error) {
|
||||
if dir == "" {
|
||||
dir = os.TempDir()
|
||||
}
|
||||
|
||||
nconflict := 0
|
||||
for i := 0; i < 10000; i++ {
|
||||
name := filepath.Join(dir, prefix+nextSuffix())
|
||||
f, err = OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0o600)
|
||||
if os.IsExist(err) {
|
||||
if nconflict++; nconflict > 10 {
|
||||
randmu.Lock()
|
||||
rand = reseed()
|
||||
randmu.Unlock()
|
||||
}
|
||||
continue
|
||||
}
|
||||
break
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
+202
-202
@@ -1,202 +1,202 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
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(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
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|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
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|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
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|
||||
modifications, and in Source or Object form, provided that You
|
||||
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|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
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|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
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as part of the Derivative Works; within the Source form or
|
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documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
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|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
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agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
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implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
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|
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|
||||
same "printed page" as the copyright notice for easier
|
||||
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|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
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|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
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|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
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direction or management of such entity, whether by contract or
|
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|
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|
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|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
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|
||||
"Source" form shall mean the preferred form for making modifications,
|
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|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
+157
-157
@@ -1,157 +1,157 @@
|
||||
//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
|
||||
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
|
||||
|
||||
package user
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// Unix-specific path to the passwd and group formatted files.
|
||||
const (
|
||||
unixPasswdPath = "/etc/passwd"
|
||||
unixGroupPath = "/etc/group"
|
||||
)
|
||||
|
||||
// LookupUser looks up a user by their username in /etc/passwd. If the user
|
||||
// cannot be found (or there is no /etc/passwd file on the filesystem), then
|
||||
// LookupUser returns an error.
|
||||
func LookupUser(username string) (User, error) {
|
||||
return lookupUserFunc(func(u User) bool {
|
||||
return u.Name == username
|
||||
})
|
||||
}
|
||||
|
||||
// LookupUid looks up a user by their user id in /etc/passwd. If the user cannot
|
||||
// be found (or there is no /etc/passwd file on the filesystem), then LookupId
|
||||
// returns an error.
|
||||
func LookupUid(uid int) (User, error) {
|
||||
return lookupUserFunc(func(u User) bool {
|
||||
return u.Uid == uid
|
||||
})
|
||||
}
|
||||
|
||||
func lookupUserFunc(filter func(u User) bool) (User, error) {
|
||||
// Get operating system-specific passwd reader-closer.
|
||||
passwd, err := GetPasswd()
|
||||
if err != nil {
|
||||
return User{}, err
|
||||
}
|
||||
defer passwd.Close()
|
||||
|
||||
// Get the users.
|
||||
users, err := ParsePasswdFilter(passwd, filter)
|
||||
if err != nil {
|
||||
return User{}, err
|
||||
}
|
||||
|
||||
// No user entries found.
|
||||
if len(users) == 0 {
|
||||
return User{}, ErrNoPasswdEntries
|
||||
}
|
||||
|
||||
// Assume the first entry is the "correct" one.
|
||||
return users[0], nil
|
||||
}
|
||||
|
||||
// LookupGroup looks up a group by its name in /etc/group. If the group cannot
|
||||
// be found (or there is no /etc/group file on the filesystem), then LookupGroup
|
||||
// returns an error.
|
||||
func LookupGroup(groupname string) (Group, error) {
|
||||
return lookupGroupFunc(func(g Group) bool {
|
||||
return g.Name == groupname
|
||||
})
|
||||
}
|
||||
|
||||
// LookupGid looks up a group by its group id in /etc/group. If the group cannot
|
||||
// be found (or there is no /etc/group file on the filesystem), then LookupGid
|
||||
// returns an error.
|
||||
func LookupGid(gid int) (Group, error) {
|
||||
return lookupGroupFunc(func(g Group) bool {
|
||||
return g.Gid == gid
|
||||
})
|
||||
}
|
||||
|
||||
func lookupGroupFunc(filter func(g Group) bool) (Group, error) {
|
||||
// Get operating system-specific group reader-closer.
|
||||
group, err := GetGroup()
|
||||
if err != nil {
|
||||
return Group{}, err
|
||||
}
|
||||
defer group.Close()
|
||||
|
||||
// Get the users.
|
||||
groups, err := ParseGroupFilter(group, filter)
|
||||
if err != nil {
|
||||
return Group{}, err
|
||||
}
|
||||
|
||||
// No user entries found.
|
||||
if len(groups) == 0 {
|
||||
return Group{}, ErrNoGroupEntries
|
||||
}
|
||||
|
||||
// Assume the first entry is the "correct" one.
|
||||
return groups[0], nil
|
||||
}
|
||||
|
||||
func GetPasswdPath() (string, error) {
|
||||
return unixPasswdPath, nil
|
||||
}
|
||||
|
||||
func GetPasswd() (io.ReadCloser, error) {
|
||||
return os.Open(unixPasswdPath)
|
||||
}
|
||||
|
||||
func GetGroupPath() (string, error) {
|
||||
return unixGroupPath, nil
|
||||
}
|
||||
|
||||
func GetGroup() (io.ReadCloser, error) {
|
||||
return os.Open(unixGroupPath)
|
||||
}
|
||||
|
||||
// CurrentUser looks up the current user by their user id in /etc/passwd. If the
|
||||
// user cannot be found (or there is no /etc/passwd file on the filesystem),
|
||||
// then CurrentUser returns an error.
|
||||
func CurrentUser() (User, error) {
|
||||
return LookupUid(unix.Getuid())
|
||||
}
|
||||
|
||||
// CurrentGroup looks up the current user's group by their primary group id's
|
||||
// entry in /etc/passwd. If the group cannot be found (or there is no
|
||||
// /etc/group file on the filesystem), then CurrentGroup returns an error.
|
||||
func CurrentGroup() (Group, error) {
|
||||
return LookupGid(unix.Getgid())
|
||||
}
|
||||
|
||||
func currentUserSubIDs(fileName string) ([]SubID, error) {
|
||||
u, err := CurrentUser()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
filter := func(entry SubID) bool {
|
||||
return entry.Name == u.Name || entry.Name == strconv.Itoa(u.Uid)
|
||||
}
|
||||
return ParseSubIDFileFilter(fileName, filter)
|
||||
}
|
||||
|
||||
func CurrentUserSubUIDs() ([]SubID, error) {
|
||||
return currentUserSubIDs("/etc/subuid")
|
||||
}
|
||||
|
||||
func CurrentUserSubGIDs() ([]SubID, error) {
|
||||
return currentUserSubIDs("/etc/subgid")
|
||||
}
|
||||
|
||||
func CurrentProcessUIDMap() ([]IDMap, error) {
|
||||
return ParseIDMapFile("/proc/self/uid_map")
|
||||
}
|
||||
|
||||
func CurrentProcessGIDMap() ([]IDMap, error) {
|
||||
return ParseIDMapFile("/proc/self/gid_map")
|
||||
}
|
||||
//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
|
||||
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
|
||||
|
||||
package user
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// Unix-specific path to the passwd and group formatted files.
|
||||
const (
|
||||
unixPasswdPath = "/etc/passwd"
|
||||
unixGroupPath = "/etc/group"
|
||||
)
|
||||
|
||||
// LookupUser looks up a user by their username in /etc/passwd. If the user
|
||||
// cannot be found (or there is no /etc/passwd file on the filesystem), then
|
||||
// LookupUser returns an error.
|
||||
func LookupUser(username string) (User, error) {
|
||||
return lookupUserFunc(func(u User) bool {
|
||||
return u.Name == username
|
||||
})
|
||||
}
|
||||
|
||||
// LookupUid looks up a user by their user id in /etc/passwd. If the user cannot
|
||||
// be found (or there is no /etc/passwd file on the filesystem), then LookupId
|
||||
// returns an error.
|
||||
func LookupUid(uid int) (User, error) {
|
||||
return lookupUserFunc(func(u User) bool {
|
||||
return u.Uid == uid
|
||||
})
|
||||
}
|
||||
|
||||
func lookupUserFunc(filter func(u User) bool) (User, error) {
|
||||
// Get operating system-specific passwd reader-closer.
|
||||
passwd, err := GetPasswd()
|
||||
if err != nil {
|
||||
return User{}, err
|
||||
}
|
||||
defer passwd.Close()
|
||||
|
||||
// Get the users.
|
||||
users, err := ParsePasswdFilter(passwd, filter)
|
||||
if err != nil {
|
||||
return User{}, err
|
||||
}
|
||||
|
||||
// No user entries found.
|
||||
if len(users) == 0 {
|
||||
return User{}, ErrNoPasswdEntries
|
||||
}
|
||||
|
||||
// Assume the first entry is the "correct" one.
|
||||
return users[0], nil
|
||||
}
|
||||
|
||||
// LookupGroup looks up a group by its name in /etc/group. If the group cannot
|
||||
// be found (or there is no /etc/group file on the filesystem), then LookupGroup
|
||||
// returns an error.
|
||||
func LookupGroup(groupname string) (Group, error) {
|
||||
return lookupGroupFunc(func(g Group) bool {
|
||||
return g.Name == groupname
|
||||
})
|
||||
}
|
||||
|
||||
// LookupGid looks up a group by its group id in /etc/group. If the group cannot
|
||||
// be found (or there is no /etc/group file on the filesystem), then LookupGid
|
||||
// returns an error.
|
||||
func LookupGid(gid int) (Group, error) {
|
||||
return lookupGroupFunc(func(g Group) bool {
|
||||
return g.Gid == gid
|
||||
})
|
||||
}
|
||||
|
||||
func lookupGroupFunc(filter func(g Group) bool) (Group, error) {
|
||||
// Get operating system-specific group reader-closer.
|
||||
group, err := GetGroup()
|
||||
if err != nil {
|
||||
return Group{}, err
|
||||
}
|
||||
defer group.Close()
|
||||
|
||||
// Get the users.
|
||||
groups, err := ParseGroupFilter(group, filter)
|
||||
if err != nil {
|
||||
return Group{}, err
|
||||
}
|
||||
|
||||
// No user entries found.
|
||||
if len(groups) == 0 {
|
||||
return Group{}, ErrNoGroupEntries
|
||||
}
|
||||
|
||||
// Assume the first entry is the "correct" one.
|
||||
return groups[0], nil
|
||||
}
|
||||
|
||||
func GetPasswdPath() (string, error) {
|
||||
return unixPasswdPath, nil
|
||||
}
|
||||
|
||||
func GetPasswd() (io.ReadCloser, error) {
|
||||
return os.Open(unixPasswdPath)
|
||||
}
|
||||
|
||||
func GetGroupPath() (string, error) {
|
||||
return unixGroupPath, nil
|
||||
}
|
||||
|
||||
func GetGroup() (io.ReadCloser, error) {
|
||||
return os.Open(unixGroupPath)
|
||||
}
|
||||
|
||||
// CurrentUser looks up the current user by their user id in /etc/passwd. If the
|
||||
// user cannot be found (or there is no /etc/passwd file on the filesystem),
|
||||
// then CurrentUser returns an error.
|
||||
func CurrentUser() (User, error) {
|
||||
return LookupUid(unix.Getuid())
|
||||
}
|
||||
|
||||
// CurrentGroup looks up the current user's group by their primary group id's
|
||||
// entry in /etc/passwd. If the group cannot be found (or there is no
|
||||
// /etc/group file on the filesystem), then CurrentGroup returns an error.
|
||||
func CurrentGroup() (Group, error) {
|
||||
return LookupGid(unix.Getgid())
|
||||
}
|
||||
|
||||
func currentUserSubIDs(fileName string) ([]SubID, error) {
|
||||
u, err := CurrentUser()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
filter := func(entry SubID) bool {
|
||||
return entry.Name == u.Name || entry.Name == strconv.Itoa(u.Uid)
|
||||
}
|
||||
return ParseSubIDFileFilter(fileName, filter)
|
||||
}
|
||||
|
||||
func CurrentUserSubUIDs() ([]SubID, error) {
|
||||
return currentUserSubIDs("/etc/subuid")
|
||||
}
|
||||
|
||||
func CurrentUserSubGIDs() ([]SubID, error) {
|
||||
return currentUserSubIDs("/etc/subgid")
|
||||
}
|
||||
|
||||
func CurrentProcessUIDMap() ([]IDMap, error) {
|
||||
return ParseIDMapFile("/proc/self/uid_map")
|
||||
}
|
||||
|
||||
func CurrentProcessGIDMap() ([]IDMap, error) {
|
||||
return ParseIDMapFile("/proc/self/gid_map")
|
||||
}
|
||||
|
||||
+605
-605
File diff suppressed because it is too large
Load Diff
+43
-43
@@ -1,43 +1,43 @@
|
||||
//go:build gofuzz
|
||||
// +build gofuzz
|
||||
|
||||
package user
|
||||
|
||||
import (
|
||||
"io"
|
||||
"strings"
|
||||
)
|
||||
|
||||
func IsDivisbleBy(n int, divisibleby int) bool {
|
||||
return (n % divisibleby) == 0
|
||||
}
|
||||
|
||||
func FuzzUser(data []byte) int {
|
||||
if len(data) == 0 {
|
||||
return -1
|
||||
}
|
||||
if !IsDivisbleBy(len(data), 5) {
|
||||
return -1
|
||||
}
|
||||
|
||||
var divided [][]byte
|
||||
|
||||
chunkSize := len(data) / 5
|
||||
|
||||
for i := 0; i < len(data); i += chunkSize {
|
||||
end := i + chunkSize
|
||||
|
||||
divided = append(divided, data[i:end])
|
||||
}
|
||||
|
||||
_, _ = ParsePasswdFilter(strings.NewReader(string(divided[0])), nil)
|
||||
|
||||
var passwd, group io.Reader
|
||||
|
||||
group = strings.NewReader(string(divided[1]))
|
||||
_, _ = GetAdditionalGroups([]string{string(divided[2])}, group)
|
||||
|
||||
passwd = strings.NewReader(string(divided[3]))
|
||||
_, _ = GetExecUser(string(divided[4]), nil, passwd, group)
|
||||
return 1
|
||||
}
|
||||
//go:build gofuzz
|
||||
// +build gofuzz
|
||||
|
||||
package user
|
||||
|
||||
import (
|
||||
"io"
|
||||
"strings"
|
||||
)
|
||||
|
||||
func IsDivisbleBy(n int, divisibleby int) bool {
|
||||
return (n % divisibleby) == 0
|
||||
}
|
||||
|
||||
func FuzzUser(data []byte) int {
|
||||
if len(data) == 0 {
|
||||
return -1
|
||||
}
|
||||
if !IsDivisbleBy(len(data), 5) {
|
||||
return -1
|
||||
}
|
||||
|
||||
var divided [][]byte
|
||||
|
||||
chunkSize := len(data) / 5
|
||||
|
||||
for i := 0; i < len(data); i += chunkSize {
|
||||
end := i + chunkSize
|
||||
|
||||
divided = append(divided, data[i:end])
|
||||
}
|
||||
|
||||
_, _ = ParsePasswdFilter(strings.NewReader(string(divided[0])), nil)
|
||||
|
||||
var passwd, group io.Reader
|
||||
|
||||
group = strings.NewReader(string(divided[1]))
|
||||
_, _ = GetAdditionalGroups([]string{string(divided[2])}, group)
|
||||
|
||||
passwd = strings.NewReader(string(divided[3]))
|
||||
_, _ = GetExecUser(string(divided[4]), nil, passwd, group)
|
||||
return 1
|
||||
}
|
||||
|
||||
+202
-202
@@ -1,202 +1,202 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
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|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
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|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
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|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
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and conversions to other media types.
|
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|
||||
"Work" shall mean the work of authorship, whether in Source or
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|
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|
||||
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|
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|
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"Derivative Works" shall mean any work, whether in Source or Object
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|
||||
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|
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|
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|
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"Contribution" shall mean any work of authorship, including
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
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|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
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this License, each Contributor hereby grants to You a perpetual,
|
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worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
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3. Grant of Patent License. Subject to the terms and conditions of
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|
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worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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|
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use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
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|
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Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
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|
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|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
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|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
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|
||||
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|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
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attribution notices from the Source form of the Work,
|
||||
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|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
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|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
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agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
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implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
+16
-16
@@ -1,16 +1,16 @@
|
||||
// Package userns provides utilities to detect whether we are currently running
|
||||
// in a Linux user namespace.
|
||||
//
|
||||
// This code was migrated from [libcontainer/runc], which based its implementation
|
||||
// on code from [lcx/incus].
|
||||
//
|
||||
// [libcontainer/runc]: https://github.com/opencontainers/runc/blob/3778ae603c706494fd1e2c2faf83b406e38d687d/libcontainer/userns/userns_linux.go#L12-L49
|
||||
// [lcx/incus]: https://github.com/lxc/incus/blob/e45085dd42f826b3c8c3228e9733c0b6f998eafe/shared/util.go#L678-L700
|
||||
package userns
|
||||
|
||||
// RunningInUserNS detects whether we are currently running in a Linux
|
||||
// user namespace and memoizes the result. It returns false on non-Linux
|
||||
// platforms.
|
||||
func RunningInUserNS() bool {
|
||||
return inUserNS()
|
||||
}
|
||||
// Package userns provides utilities to detect whether we are currently running
|
||||
// in a Linux user namespace.
|
||||
//
|
||||
// This code was migrated from [libcontainer/runc], which based its implementation
|
||||
// on code from [lcx/incus].
|
||||
//
|
||||
// [libcontainer/runc]: https://github.com/opencontainers/runc/blob/3778ae603c706494fd1e2c2faf83b406e38d687d/libcontainer/userns/userns_linux.go#L12-L49
|
||||
// [lcx/incus]: https://github.com/lxc/incus/blob/e45085dd42f826b3c8c3228e9733c0b6f998eafe/shared/util.go#L678-L700
|
||||
package userns
|
||||
|
||||
// RunningInUserNS detects whether we are currently running in a Linux
|
||||
// user namespace and memoizes the result. It returns false on non-Linux
|
||||
// platforms.
|
||||
func RunningInUserNS() bool {
|
||||
return inUserNS()
|
||||
}
|
||||
|
||||
+53
-53
@@ -1,53 +1,53 @@
|
||||
package userns
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"os"
|
||||
"sync"
|
||||
)
|
||||
|
||||
var inUserNS = sync.OnceValue(runningInUserNS)
|
||||
|
||||
// runningInUserNS detects whether we are currently running in a user namespace.
|
||||
//
|
||||
// This code was migrated from [libcontainer/runc] and based on an implementation
|
||||
// from [lcx/incus].
|
||||
//
|
||||
// [libcontainer/runc]: https://github.com/opencontainers/runc/blob/3778ae603c706494fd1e2c2faf83b406e38d687d/libcontainer/userns/userns_linux.go#L12-L49
|
||||
// [lcx/incus]: https://github.com/lxc/incus/blob/e45085dd42f826b3c8c3228e9733c0b6f998eafe/shared/util.go#L678-L700
|
||||
func runningInUserNS() bool {
|
||||
file, err := os.Open("/proc/self/uid_map")
|
||||
if err != nil {
|
||||
// This kernel-provided file only exists if user namespaces are supported.
|
||||
return false
|
||||
}
|
||||
defer file.Close()
|
||||
|
||||
buf := bufio.NewReader(file)
|
||||
l, _, err := buf.ReadLine()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
return uidMapInUserNS(string(l))
|
||||
}
|
||||
|
||||
func uidMapInUserNS(uidMap string) bool {
|
||||
if uidMap == "" {
|
||||
// File exist but empty (the initial state when userns is created,
|
||||
// see user_namespaces(7)).
|
||||
return true
|
||||
}
|
||||
|
||||
var a, b, c int64
|
||||
if _, err := fmt.Sscanf(uidMap, "%d %d %d", &a, &b, &c); err != nil {
|
||||
// Assume we are in a regular, non user namespace.
|
||||
return false
|
||||
}
|
||||
|
||||
// As per user_namespaces(7), /proc/self/uid_map of
|
||||
// the initial user namespace shows 0 0 4294967295.
|
||||
initNS := a == 0 && b == 0 && c == 4294967295
|
||||
return !initNS
|
||||
}
|
||||
package userns
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"os"
|
||||
"sync"
|
||||
)
|
||||
|
||||
var inUserNS = sync.OnceValue(runningInUserNS)
|
||||
|
||||
// runningInUserNS detects whether we are currently running in a user namespace.
|
||||
//
|
||||
// This code was migrated from [libcontainer/runc] and based on an implementation
|
||||
// from [lcx/incus].
|
||||
//
|
||||
// [libcontainer/runc]: https://github.com/opencontainers/runc/blob/3778ae603c706494fd1e2c2faf83b406e38d687d/libcontainer/userns/userns_linux.go#L12-L49
|
||||
// [lcx/incus]: https://github.com/lxc/incus/blob/e45085dd42f826b3c8c3228e9733c0b6f998eafe/shared/util.go#L678-L700
|
||||
func runningInUserNS() bool {
|
||||
file, err := os.Open("/proc/self/uid_map")
|
||||
if err != nil {
|
||||
// This kernel-provided file only exists if user namespaces are supported.
|
||||
return false
|
||||
}
|
||||
defer file.Close()
|
||||
|
||||
buf := bufio.NewReader(file)
|
||||
l, _, err := buf.ReadLine()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
return uidMapInUserNS(string(l))
|
||||
}
|
||||
|
||||
func uidMapInUserNS(uidMap string) bool {
|
||||
if uidMap == "" {
|
||||
// File exist but empty (the initial state when userns is created,
|
||||
// see user_namespaces(7)).
|
||||
return true
|
||||
}
|
||||
|
||||
var a, b, c int64
|
||||
if _, err := fmt.Sscanf(uidMap, "%d %d %d", &a, &b, &c); err != nil {
|
||||
// Assume we are in a regular, non user namespace.
|
||||
return false
|
||||
}
|
||||
|
||||
// As per user_namespaces(7), /proc/self/uid_map of
|
||||
// the initial user namespace shows 0 0 4294967295.
|
||||
initNS := a == 0 && b == 0 && c == 4294967295
|
||||
return !initNS
|
||||
}
|
||||
|
||||
+8
-8
@@ -1,8 +1,8 @@
|
||||
//go:build linux && gofuzz
|
||||
|
||||
package userns
|
||||
|
||||
func FuzzUIDMap(uidmap []byte) int {
|
||||
_ = uidMapInUserNS(string(uidmap))
|
||||
return 1
|
||||
}
|
||||
//go:build linux && gofuzz
|
||||
|
||||
package userns
|
||||
|
||||
func FuzzUIDMap(uidmap []byte) int {
|
||||
_ = uidMapInUserNS(string(uidmap))
|
||||
return 1
|
||||
}
|
||||
|
||||
+6
-6
@@ -1,6 +1,6 @@
|
||||
//go:build !linux
|
||||
|
||||
package userns
|
||||
|
||||
// inUserNS is a stub for non-Linux systems. Always returns false.
|
||||
func inUserNS() bool { return false }
|
||||
//go:build !linux
|
||||
|
||||
package userns
|
||||
|
||||
// inUserNS is a stub for non-Linux systems. Always returns false.
|
||||
func inUserNS() bool { return false }
|
||||
|
||||
Reference in New Issue
Block a user