vendor: switch to using go1.11 modules

This commit is contained in:
Nick Craig-Wood
2018-08-28 16:08:48 +01:00
parent 5c75453aba
commit da1682a30e
6142 changed files with 390 additions and 5155875 deletions
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/*.seq.svg
# not ignoring *.seq.png; we want those committed to the repo
# for embedding on Github
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# bazil.org/fuse documentation
See also API docs at http://godoc.org/bazil.org/fuse
- [The mount sequence](mount-sequence.md)
- [Writing documentation](writing-docs.md)
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seqdiag {
app;
fuse [label="bazil.org/fuse"];
fusermount;
kernel;
mounts;
app;
fuse [label="bazil.org/fuse"];
fusermount;
kernel;
mounts;
app -> fuse [label="Mount"];
fuse -> fusermount [label="spawn, pass socketpair fd"];
fusermount -> kernel [label="open /dev/fuse"];
fusermount -> kernel [label="mount(2)"];
kernel ->> mounts [label="mount is visible"];
fusermount <-- kernel [label="mount(2) returns"];
fuse <<-- fusermount [diagonal, label="exit, receive /dev/fuse fd", leftnote="on Linux, successful exit here\nmeans the mount has happened,\nthough InitRequest might not have yet"];
app <-- fuse [label="Mount returns\nConn.Ready is already closed"];
app -> fuse [label="fs.Serve"];
fuse => kernel [label="read /dev/fuse fd", note="starts with InitRequest"];
fuse -> app [label="Init"];
fuse <-- app [color=red];
fuse -> kernel [label="write /dev/fuse fd", color=red];
kernel -> kernel [label="set connection\nstate to error", color=red];
fuse <-- kernel;
... conn.MountError == nil, so it is still mounted ...
... call conn.Close to clean up ...
}
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seqdiag {
// seqdiag -T svg -o doc/mount-osx.svg doc/mount-osx.seq
app;
fuse [label="bazil.org/fuse"];
fusermount;
kernel;
mounts;
app -> fuse [label="Mount"];
fuse -> fusermount [label="spawn, pass socketpair fd"];
fusermount -> kernel [label="open /dev/fuse"];
fusermount -> kernel [label="mount(2)"];
kernel ->> mounts [label="mount is visible"];
fusermount <-- kernel [label="mount(2) returns"];
fuse <<-- fusermount [diagonal, label="exit, receive /dev/fuse fd", leftnote="on Linux, successful exit here\nmeans the mount has happened,\nthough InitRequest might not have yet"];
app <-- fuse [label="Mount returns\nConn.Ready is already closed", rightnote="InitRequest and StatfsRequest\nmay or may not be seen\nbefore Conn.Ready,\ndepending on platform"];
app -> fuse [label="fs.Serve"];
fuse => kernel [label="read /dev/fuse fd", note="starts with InitRequest"];
fuse => app [label="FS/Node/Handle methods"];
fuse => kernel [label="write /dev/fuse fd"];
... repeat ...
... shutting down ...
app -> fuse [label="Unmount"];
fuse -> fusermount [label="fusermount -u"];
fusermount -> kernel;
kernel <<-- mounts;
fusermount <-- kernel;
fuse <<-- fusermount [diagonal];
app <-- fuse [label="Unmount returns"];
// actually triggers before above
fuse <<-- kernel [diagonal, label="/dev/fuse EOF"];
app <-- fuse [label="fs.Serve returns"];
app -> fuse [label="conn.Close"];
fuse -> kernel [label="close /dev/fuse fd"];
fuse <-- kernel;
app <-- fuse;
}
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seqdiag {
app;
fuse [label="bazil.org/fuse"];
wait [label="callMount\nhelper goroutine"];
mount_osxfusefs;
kernel;
app -> fuse [label="Mount"];
fuse -> kernel [label="open /dev/osxfuseN"];
fuse -> mount_osxfusefs [label="spawn, pass fd"];
fuse -> wait [label="goroutine", note="blocks on cmd.Wait"];
app <-- fuse [label="Mount returns"];
mount_osxfusefs -> kernel [label="mount(2)"];
app -> fuse [label="fs.Serve"];
fuse => kernel [label="read /dev/osxfuseN fd", note="starts with InitRequest,\nalso seen before mount exits:\ntwo StatfsRequest calls"];
fuse -> app [label="Init"];
fuse <-- app [color=red];
fuse -> kernel [label="write /dev/osxfuseN fd", color=red];
fuse <-- kernel;
mount_osxfusefs <-- kernel [label="mount(2) returns", color=red];
wait <<-- mount_osxfusefs [diagonal, label="exit", color=red];
app <<-- wait [diagonal, label="mount has failed,\nclose Conn.Ready", color=red];
// actually triggers before above
fuse <<-- kernel [diagonal, label="/dev/osxfuseN EOF"];
app <-- fuse [label="fs.Serve returns"];
... conn.MountError != nil, so it was was never mounted ...
... call conn.Close to clean up ...
}
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seqdiag {
// seqdiag -T svg -o doc/mount-osx.svg doc/mount-osx.seq
app;
fuse [label="bazil.org/fuse"];
wait [label="callMount\nhelper goroutine"];
mount_osxfusefs;
kernel;
mounts;
app -> fuse [label="Mount"];
fuse -> kernel [label="open /dev/osxfuseN"];
fuse -> mount_osxfusefs [label="spawn, pass fd"];
fuse -> wait [label="goroutine", note="blocks on cmd.Wait"];
app <-- fuse [label="Mount returns"];
mount_osxfusefs -> kernel [label="mount(2)"];
app -> fuse [label="fs.Serve"];
fuse => kernel [label="read /dev/osxfuseN fd", note="starts with InitRequest,\nalso seen before mount exits:\ntwo StatfsRequest calls"];
fuse => app [label="FS/Node/Handle methods"];
fuse => kernel [label="write /dev/osxfuseN fd"];
... repeat ...
kernel ->> mounts [label="mount is visible"];
mount_osxfusefs <-- kernel [label="mount(2) returns"];
wait <<-- mount_osxfusefs [diagonal, label="exit", leftnote="on OS X, successful exit\nhere means we finally know\nthe mount has happened\n(can't trust InitRequest,\nkernel might have timed out\nwaiting for InitResponse)"];
app <<-- wait [diagonal, label="mount is ready,\nclose Conn.Ready", rightnote="InitRequest and StatfsRequest\nmay or may not be seen\nbefore Conn.Ready,\ndepending on platform"];
... shutting down ...
app -> fuse [label="Unmount"];
fuse -> kernel [label="umount(2)"];
kernel <<-- mounts;
fuse <-- kernel;
app <-- fuse [label="Unmount returns"];
// actually triggers before above
fuse <<-- kernel [diagonal, label="/dev/osxfuseN EOF"];
app <-- fuse [label="fs.Serve returns"];
app -> fuse [label="conn.Close"];
fuse -> kernel [label="close /dev/osxfuseN"];
fuse <-- kernel;
app <-- fuse;
}
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# The mount sequence
FUSE mounting is a little bit tricky. There's a userspace helper tool
that performs the handshake with the kernel, and then steps out of the
way. This helper behaves differently on different platforms, forcing a
more complex API on us.
## Successful runs
On Linux, the mount is immediate and file system accesses wait until
the requests are served.
![Diagram of Linux FUSE mount sequence](mount-linux.seq.png)
On OS X, the mount becomes visible only after `InitRequest` (and maybe
more) have been served.
![Diagram of OSXFUSE mount sequence](mount-osx.seq.png)
## Errors
Let's see what happens if `InitRequest` gets an error response. On
Linux, the mountpoint is there but all operations will fail:
![Diagram of Linux error handling](mount-linux-error-init.seq.png)
On OS X, the mount never happened:
![Diagram of OS X error handling](mount-osx-error-init.seq.png)
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# Writing documentation
## Sequence diagrams
The sequence diagrams are generated with `seqdiag`:
http://blockdiag.com/en/seqdiag/index.html
An easy way to work on them is to automatically update the generated
files with https://github.com/cespare/reflex :
reflex -g 'doc/[^.]*.seq' -- seqdiag -T svg -o '{}.svg' '{}' &
reflex -g 'doc/[^.]*.seq' -- seqdiag -T png -o '{}.png' '{}' &
The markdown files refer to PNG images because of Github limitations,
but the SVG is generally more pleasant to view.
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// Clockfs implements a file system with the current time in a file.
// It was written to demonstrate kernel cache invalidation.
package main
import (
"flag"
"fmt"
"log"
"os"
"sync/atomic"
"syscall"
"time"
"bazil.org/fuse"
"bazil.org/fuse/fs"
_ "bazil.org/fuse/fs/fstestutil"
"bazil.org/fuse/fuseutil"
"golang.org/x/net/context"
)
func usage() {
fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
fmt.Fprintf(os.Stderr, " %s MOUNTPOINT\n", os.Args[0])
flag.PrintDefaults()
}
func run(mountpoint string) error {
c, err := fuse.Mount(
mountpoint,
fuse.FSName("clock"),
fuse.Subtype("clockfsfs"),
fuse.LocalVolume(),
fuse.VolumeName("Clock filesystem"),
)
if err != nil {
return err
}
defer c.Close()
if p := c.Protocol(); !p.HasInvalidate() {
return fmt.Errorf("kernel FUSE support is too old to have invalidations: version %v", p)
}
srv := fs.New(c, nil)
filesys := &FS{
// We pre-create the clock node so that it's always the same
// object returned from all the Lookups. You could carefully
// track its lifetime between Lookup&Forget, and have the
// ticking & invalidation happen only when active, but let's
// keep this example simple.
clockFile: &File{
fuse: srv,
},
}
filesys.clockFile.tick()
// This goroutine never exits. That's fine for this example.
go filesys.clockFile.update()
if err := srv.Serve(filesys); err != nil {
return err
}
// Check if the mount process has an error to report.
<-c.Ready
if err := c.MountError; err != nil {
return err
}
return nil
}
func main() {
flag.Usage = usage
flag.Parse()
if flag.NArg() != 1 {
usage()
os.Exit(2)
}
mountpoint := flag.Arg(0)
if err := run(mountpoint); err != nil {
log.Fatal(err)
}
}
type FS struct {
clockFile *File
}
var _ fs.FS = (*FS)(nil)
func (f *FS) Root() (fs.Node, error) {
return &Dir{fs: f}, nil
}
// Dir implements both Node and Handle for the root directory.
type Dir struct {
fs *FS
}
var _ fs.Node = (*Dir)(nil)
func (d *Dir) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = 1
a.Mode = os.ModeDir | 0555
return nil
}
var _ fs.NodeStringLookuper = (*Dir)(nil)
func (d *Dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
if name == "clock" {
return d.fs.clockFile, nil
}
return nil, fuse.ENOENT
}
var dirDirs = []fuse.Dirent{
{Inode: 2, Name: "clock", Type: fuse.DT_File},
}
var _ fs.HandleReadDirAller = (*Dir)(nil)
func (d *Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
return dirDirs, nil
}
type File struct {
fs.NodeRef
fuse *fs.Server
content atomic.Value
count uint64
}
var _ fs.Node = (*File)(nil)
func (f *File) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = 2
a.Mode = 0444
t := f.content.Load().(string)
a.Size = uint64(len(t))
return nil
}
var _ fs.NodeOpener = (*File)(nil)
func (f *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) {
if !req.Flags.IsReadOnly() {
return nil, fuse.Errno(syscall.EACCES)
}
resp.Flags |= fuse.OpenKeepCache
return f, nil
}
var _ fs.Handle = (*File)(nil)
var _ fs.HandleReader = (*File)(nil)
func (f *File) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
t := f.content.Load().(string)
fuseutil.HandleRead(req, resp, []byte(t))
return nil
}
func (f *File) tick() {
// Intentionally a variable-length format, to demonstrate size changes.
f.count++
s := fmt.Sprintf("%d\t%s\n", f.count, time.Now())
f.content.Store(s)
// For simplicity, this example tries to send invalidate
// notifications even when the kernel does not hold a reference to
// the node, so be extra sure to ignore ErrNotCached.
if err := f.fuse.InvalidateNodeData(f); err != nil && err != fuse.ErrNotCached {
log.Printf("invalidate error: %v", err)
}
}
func (f *File) update() {
tick := time.NewTicker(1 * time.Second)
defer tick.Stop()
for range tick.C {
f.tick()
}
}
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// Hellofs implements a simple "hello world" file system.
package main
import (
"flag"
"fmt"
"log"
"os"
"bazil.org/fuse"
"bazil.org/fuse/fs"
_ "bazil.org/fuse/fs/fstestutil"
"golang.org/x/net/context"
)
func usage() {
fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
fmt.Fprintf(os.Stderr, " %s MOUNTPOINT\n", os.Args[0])
flag.PrintDefaults()
}
func main() {
flag.Usage = usage
flag.Parse()
if flag.NArg() != 1 {
usage()
os.Exit(2)
}
mountpoint := flag.Arg(0)
c, err := fuse.Mount(
mountpoint,
fuse.FSName("helloworld"),
fuse.Subtype("hellofs"),
fuse.LocalVolume(),
fuse.VolumeName("Hello world!"),
)
if err != nil {
log.Fatal(err)
}
defer c.Close()
err = fs.Serve(c, FS{})
if err != nil {
log.Fatal(err)
}
// check if the mount process has an error to report
<-c.Ready
if err := c.MountError; err != nil {
log.Fatal(err)
}
}
// FS implements the hello world file system.
type FS struct{}
func (FS) Root() (fs.Node, error) {
return Dir{}, nil
}
// Dir implements both Node and Handle for the root directory.
type Dir struct{}
func (Dir) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = 1
a.Mode = os.ModeDir | 0555
return nil
}
func (Dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
if name == "hello" {
return File{}, nil
}
return nil, fuse.ENOENT
}
var dirDirs = []fuse.Dirent{
{Inode: 2, Name: "hello", Type: fuse.DT_File},
}
func (Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
return dirDirs, nil
}
// File implements both Node and Handle for the hello file.
type File struct{}
const greeting = "hello, world\n"
func (File) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = 2
a.Mode = 0444
a.Size = uint64(len(greeting))
return nil
}
func (File) ReadAll(ctx context.Context) ([]byte, error) {
return []byte(greeting), nil
}
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package bench_test
import (
"fmt"
"os"
"testing"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"bazil.org/fuse/fs/fstestutil"
"golang.org/x/net/context"
)
type dummyFile struct {
fstestutil.File
}
type benchCreateDir struct {
fstestutil.Dir
}
var _ fs.NodeCreater = (*benchCreateDir)(nil)
func (f *benchCreateDir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
child := &dummyFile{}
return child, child, nil
}
func BenchmarkCreate(b *testing.B) {
f := &benchCreateDir{}
mnt, err := fstestutil.MountedT(b, fstestutil.SimpleFS{f}, nil)
if err != nil {
b.Fatal(err)
}
defer mnt.Close()
// prepare file names to decrease test overhead
names := make([]string, 0, b.N)
for i := 0; i < b.N; i++ {
// zero-padded so cost stays the same on every iteration
names = append(names, mnt.Dir+"/"+fmt.Sprintf("%08x", i))
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
f, err := os.Create(names[i])
if err != nil {
b.Fatalf("WriteFile: %v", err)
}
f.Close()
}
b.StopTimer()
}
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package bench_test
import (
"os"
"testing"
"golang.org/x/net/context"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"bazil.org/fuse/fs/fstestutil"
)
type benchLookupDir struct {
fstestutil.Dir
}
var _ fs.NodeRequestLookuper = (*benchLookupDir)(nil)
func (f *benchLookupDir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (fs.Node, error) {
return nil, fuse.ENOENT
}
func BenchmarkLookup(b *testing.B) {
f := &benchLookupDir{}
mnt, err := fstestutil.MountedT(b, fstestutil.SimpleFS{f}, nil)
if err != nil {
b.Fatal(err)
}
defer mnt.Close()
name := mnt.Dir + "/does-not-exist"
b.ResetTimer()
for i := 0; i < b.N; i++ {
if _, err := os.Stat(name); !os.IsNotExist(err) {
b.Fatalf("Stat: wrong error: %v", err)
}
}
b.StopTimer()
}
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package bench_test
import (
"io"
"io/ioutil"
"os"
"path"
"testing"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"bazil.org/fuse/fs/fstestutil"
"golang.org/x/net/context"
)
type benchConfig struct {
directIO bool
}
type benchFS struct {
conf *benchConfig
}
var _ = fs.FS(benchFS{})
func (f benchFS) Root() (fs.Node, error) {
return benchDir{conf: f.conf}, nil
}
type benchDir struct {
conf *benchConfig
}
var _ = fs.Node(benchDir{})
var _ = fs.NodeStringLookuper(benchDir{})
var _ = fs.Handle(benchDir{})
var _ = fs.HandleReadDirAller(benchDir{})
func (benchDir) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = 1
a.Mode = os.ModeDir | 0555
return nil
}
func (d benchDir) Lookup(ctx context.Context, name string) (fs.Node, error) {
if name == "bench" {
return benchFile{conf: d.conf}, nil
}
return nil, fuse.ENOENT
}
func (benchDir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
l := []fuse.Dirent{
{Inode: 2, Name: "bench", Type: fuse.DT_File},
}
return l, nil
}
type benchFile struct {
conf *benchConfig
}
var _ = fs.Node(benchFile{})
var _ = fs.NodeOpener(benchFile{})
var _ = fs.NodeFsyncer(benchFile{})
var _ = fs.Handle(benchFile{})
var _ = fs.HandleReader(benchFile{})
var _ = fs.HandleWriter(benchFile{})
func (benchFile) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = 2
a.Mode = 0644
a.Size = 9999999999999999
return nil
}
func (f benchFile) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) {
if f.conf.directIO {
resp.Flags |= fuse.OpenDirectIO
}
// TODO configurable?
resp.Flags |= fuse.OpenKeepCache
return f, nil
}
func (benchFile) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
resp.Data = resp.Data[:cap(resp.Data)]
return nil
}
func (benchFile) Write(ctx context.Context, req *fuse.WriteRequest, resp *fuse.WriteResponse) error {
resp.Size = len(req.Data)
return nil
}
func (benchFile) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
return nil
}
func benchmark(b *testing.B, fn func(b *testing.B, mnt string), conf *benchConfig) {
filesys := benchFS{
conf: conf,
}
mnt, err := fstestutil.Mounted(filesys, nil,
fuse.MaxReadahead(64*1024*1024),
fuse.AsyncRead(),
fuse.WritebackCache(),
)
if err != nil {
b.Fatal(err)
}
defer mnt.Close()
fn(b, mnt.Dir)
}
type zero struct{}
func (zero) Read(p []byte) (n int, err error) {
return len(p), nil
}
var Zero io.Reader = zero{}
func doWrites(size int64) func(b *testing.B, mnt string) {
return func(b *testing.B, mnt string) {
p := path.Join(mnt, "bench")
f, err := os.Create(p)
if err != nil {
b.Fatalf("create: %v", err)
}
defer f.Close()
b.ResetTimer()
b.SetBytes(size)
for i := 0; i < b.N; i++ {
_, err = io.CopyN(f, Zero, size)
if err != nil {
b.Fatalf("write: %v", err)
}
}
}
}
func BenchmarkWrite100(b *testing.B) {
benchmark(b, doWrites(100), &benchConfig{})
}
func BenchmarkWrite10MB(b *testing.B) {
benchmark(b, doWrites(10*1024*1024), &benchConfig{})
}
func BenchmarkWrite100MB(b *testing.B) {
benchmark(b, doWrites(100*1024*1024), &benchConfig{})
}
func BenchmarkDirectWrite100(b *testing.B) {
benchmark(b, doWrites(100), &benchConfig{
directIO: true,
})
}
func BenchmarkDirectWrite10MB(b *testing.B) {
benchmark(b, doWrites(10*1024*1024), &benchConfig{
directIO: true,
})
}
func BenchmarkDirectWrite100MB(b *testing.B) {
benchmark(b, doWrites(100*1024*1024), &benchConfig{
directIO: true,
})
}
func doWritesSync(size int64) func(b *testing.B, mnt string) {
return func(b *testing.B, mnt string) {
p := path.Join(mnt, "bench")
f, err := os.Create(p)
if err != nil {
b.Fatalf("create: %v", err)
}
defer f.Close()
b.ResetTimer()
b.SetBytes(size)
for i := 0; i < b.N; i++ {
_, err = io.CopyN(f, Zero, size)
if err != nil {
b.Fatalf("write: %v", err)
}
if err := f.Sync(); err != nil {
b.Fatalf("sync: %v", err)
}
}
}
}
func BenchmarkWriteSync100(b *testing.B) {
benchmark(b, doWritesSync(100), &benchConfig{})
}
func BenchmarkWriteSync10MB(b *testing.B) {
benchmark(b, doWritesSync(10*1024*1024), &benchConfig{})
}
func BenchmarkWriteSync100MB(b *testing.B) {
benchmark(b, doWritesSync(100*1024*1024), &benchConfig{})
}
func doReads(size int64) func(b *testing.B, mnt string) {
return func(b *testing.B, mnt string) {
p := path.Join(mnt, "bench")
f, err := os.Open(p)
if err != nil {
b.Fatalf("close: %v", err)
}
defer f.Close()
b.ResetTimer()
b.SetBytes(size)
for i := 0; i < b.N; i++ {
n, err := io.CopyN(ioutil.Discard, f, size)
if err != nil {
b.Fatalf("read: %v", err)
}
if n != size {
b.Errorf("unexpected size: %d != %d", n, size)
}
}
}
}
func BenchmarkRead100(b *testing.B) {
benchmark(b, doReads(100), &benchConfig{})
}
func BenchmarkRead10MB(b *testing.B) {
benchmark(b, doReads(10*1024*1024), &benchConfig{})
}
func BenchmarkRead100MB(b *testing.B) {
benchmark(b, doReads(100*1024*1024), &benchConfig{})
}
func BenchmarkDirectRead100(b *testing.B) {
benchmark(b, doReads(100), &benchConfig{
directIO: true,
})
}
func BenchmarkDirectRead10MB(b *testing.B) {
benchmark(b, doReads(10*1024*1024), &benchConfig{
directIO: true,
})
}
func BenchmarkDirectRead100MB(b *testing.B) {
benchmark(b, doReads(100*1024*1024), &benchConfig{
directIO: true,
})
}
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// Package bench contains benchmarks.
//
// It is kept in a separate package to avoid conflicting with the
// debug-heavy defaults for the actual tests.
package bench
-70
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@@ -1,70 +0,0 @@
package fstestutil
import (
"fmt"
"io/ioutil"
"os"
)
// FileInfoCheck is a function that validates an os.FileInfo according
// to some criteria.
type FileInfoCheck func(fi os.FileInfo) error
type checkDirError struct {
missing map[string]struct{}
extra map[string]os.FileMode
}
func (e *checkDirError) Error() string {
return fmt.Sprintf("wrong directory contents: missing %v, extra %v", e.missing, e.extra)
}
// CheckDir checks the contents of the directory at path, making sure
// every directory entry listed in want is present. If the check is
// not nil, it must also pass.
//
// If want contains the impossible filename "", unexpected files are
// checked with that. If the key is not in want, unexpected files are
// an error.
//
// Missing entries, that are listed in want but not seen, are an
// error.
func CheckDir(path string, want map[string]FileInfoCheck) error {
problems := &checkDirError{
missing: make(map[string]struct{}, len(want)),
extra: make(map[string]os.FileMode),
}
for k := range want {
if k == "" {
continue
}
problems.missing[k] = struct{}{}
}
fis, err := ioutil.ReadDir(path)
if err != nil {
return fmt.Errorf("cannot read directory: %v", err)
}
for _, fi := range fis {
check, ok := want[fi.Name()]
if !ok {
check, ok = want[""]
}
if !ok {
problems.extra[fi.Name()] = fi.Mode()
continue
}
delete(problems.missing, fi.Name())
if check != nil {
if err := check(fi); err != nil {
return fmt.Errorf("check failed: %v: %v", fi.Name(), err)
}
}
}
if len(problems.missing) > 0 || len(problems.extra) > 0 {
return problems
}
return nil
}
-65
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@@ -1,65 +0,0 @@
package fstestutil
import (
"flag"
"log"
"strconv"
"bazil.org/fuse"
)
type flagDebug bool
var debug flagDebug
var _ = flag.Value(&debug)
func (f *flagDebug) IsBoolFlag() bool {
return true
}
func nop(msg interface{}) {}
func (f *flagDebug) Set(s string) error {
v, err := strconv.ParseBool(s)
if err != nil {
return err
}
*f = flagDebug(v)
if v {
fuse.Debug = logMsg
} else {
fuse.Debug = nop
}
return nil
}
func (f *flagDebug) String() string {
return strconv.FormatBool(bool(*f))
}
func logMsg(msg interface{}) {
log.Printf("FUSE: %s\n", msg)
}
func init() {
flag.Var(&debug, "fuse.debug", "log FUSE processing details")
}
// DebugByDefault changes the default of the `-fuse.debug` flag to
// true.
//
// This package registers a command line flag `-fuse.debug` and when
// run with that flag (and activated inside the tests), logs FUSE
// debug messages.
//
// This is disabled by default, as most callers probably won't care
// about FUSE details. Use DebugByDefault for tests where you'd
// normally be passing `-fuse.debug` all the time anyway.
//
// Call from an init function.
func DebugByDefault() {
f := flag.Lookup("fuse.debug")
f.DefValue = "true"
f.Value.Set(f.DefValue)
}
-1
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@@ -1 +0,0 @@
package fstestutil // import "bazil.org/fuse/fs/fstestutil"
-141
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@@ -1,141 +0,0 @@
package fstestutil
import (
"errors"
"io/ioutil"
"log"
"os"
"testing"
"time"
"bazil.org/fuse"
"bazil.org/fuse/fs"
)
// Mount contains information about the mount for the test to use.
type Mount struct {
// Dir is the temporary directory where the filesystem is mounted.
Dir string
Conn *fuse.Conn
Server *fs.Server
// Error will receive the return value of Serve.
Error <-chan error
done <-chan struct{}
closed bool
}
// Close unmounts the filesystem and waits for fs.Serve to return. Any
// returned error will be stored in Err. It is safe to call Close
// multiple times.
func (mnt *Mount) Close() {
if mnt.closed {
return
}
mnt.closed = true
for tries := 0; tries < 1000; tries++ {
err := fuse.Unmount(mnt.Dir)
if err != nil {
// TODO do more than log?
log.Printf("unmount error: %v", err)
time.Sleep(10 * time.Millisecond)
continue
}
break
}
<-mnt.done
mnt.Conn.Close()
os.Remove(mnt.Dir)
}
// MountedFunc mounts a filesystem at a temporary directory. The
// filesystem used is constructed by calling a function, to allow
// storing fuse.Conn and fs.Server in the FS.
//
// It also waits until the filesystem is known to be visible (OS X
// workaround).
//
// After successful return, caller must clean up by calling Close.
func MountedFunc(fn func(*Mount) fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
dir, err := ioutil.TempDir("", "fusetest")
if err != nil {
return nil, err
}
c, err := fuse.Mount(dir, options...)
if err != nil {
return nil, err
}
server := fs.New(c, conf)
done := make(chan struct{})
serveErr := make(chan error, 1)
mnt := &Mount{
Dir: dir,
Conn: c,
Server: server,
Error: serveErr,
done: done,
}
filesys := fn(mnt)
go func() {
defer close(done)
serveErr <- server.Serve(filesys)
}()
select {
case <-mnt.Conn.Ready:
if err := mnt.Conn.MountError; err != nil {
return nil, err
}
return mnt, nil
case err = <-mnt.Error:
// Serve quit early
if err != nil {
return nil, err
}
return nil, errors.New("Serve exited early")
}
}
// Mounted mounts the fuse.Server at a temporary directory.
//
// It also waits until the filesystem is known to be visible (OS X
// workaround).
//
// After successful return, caller must clean up by calling Close.
func Mounted(filesys fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
fn := func(*Mount) fs.FS { return filesys }
return MountedFunc(fn, conf, options...)
}
// MountedFuncT mounts a filesystem at a temporary directory,
// directing it's debug log to the testing logger.
//
// See MountedFunc for usage.
//
// The debug log is not enabled by default. Use `-fuse.debug` or call
// DebugByDefault to enable.
func MountedFuncT(t testing.TB, fn func(*Mount) fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
if conf == nil {
conf = &fs.Config{}
}
if debug && conf.Debug == nil {
conf.Debug = func(msg interface{}) {
t.Logf("FUSE: %s", msg)
}
}
return MountedFunc(fn, conf, options...)
}
// MountedT mounts the filesystem at a temporary directory,
// directing it's debug log to the testing logger.
//
// See Mounted for usage.
//
// The debug log is not enabled by default. Use `-fuse.debug` or call
// DebugByDefault to enable.
func MountedT(t testing.TB, filesys fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
fn := func(*Mount) fs.FS { return filesys }
return MountedFuncT(t, fn, conf, options...)
}
-26
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@@ -1,26 +0,0 @@
package fstestutil
// MountInfo describes a mounted file system.
type MountInfo struct {
FSName string
Type string
}
// GetMountInfo finds information about the mount at mnt. It is
// intended for use by tests only, and only fetches information
// relevant to the current tests.
func GetMountInfo(mnt string) (*MountInfo, error) {
return getMountInfo(mnt)
}
// cstr converts a nil-terminated C string into a Go string
func cstr(ca []int8) string {
s := make([]byte, 0, len(ca))
for _, c := range ca {
if c == 0x00 {
break
}
s = append(s, byte(c))
}
return string(s)
}
-29
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@@ -1,29 +0,0 @@
package fstestutil
import (
"regexp"
"syscall"
)
var re = regexp.MustCompile(`\\(.)`)
// unescape removes backslash-escaping. The escaped characters are not
// mapped in any way; that is, unescape(`\n` ) == `n`.
func unescape(s string) string {
return re.ReplaceAllString(s, `$1`)
}
func getMountInfo(mnt string) (*MountInfo, error) {
var st syscall.Statfs_t
err := syscall.Statfs(mnt, &st)
if err != nil {
return nil, err
}
i := &MountInfo{
// osx getmntent(3) fails to un-escape the data, so we do it..
// this might lead to double-unescaping in the future. fun.
// TestMountOptionFSNameEvilBackslashDouble checks for that.
FSName: unescape(cstr(st.Mntfromname[:])),
}
return i, nil
}
-7
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@@ -1,7 +0,0 @@
package fstestutil
import "errors"
func getMountInfo(mnt string) (*MountInfo, error) {
return nil, errors.New("FreeBSD has no useful mount information")
}
-51
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@@ -1,51 +0,0 @@
package fstestutil
import (
"errors"
"io/ioutil"
"strings"
)
// Linux /proc/mounts shows current mounts.
// Same format as /etc/fstab. Quoting getmntent(3):
//
// Since fields in the mtab and fstab files are separated by whitespace,
// octal escapes are used to represent the four characters space (\040),
// tab (\011), newline (\012) and backslash (\134) in those files when
// they occur in one of the four strings in a mntent structure.
//
// http://linux.die.net/man/3/getmntent
var fstabUnescape = strings.NewReplacer(
`\040`, "\040",
`\011`, "\011",
`\012`, "\012",
`\134`, "\134",
)
var errNotFound = errors.New("mount not found")
func getMountInfo(mnt string) (*MountInfo, error) {
data, err := ioutil.ReadFile("/proc/mounts")
if err != nil {
return nil, err
}
for _, line := range strings.Split(string(data), "\n") {
fields := strings.Fields(line)
if len(fields) < 3 {
continue
}
// Fields are: fsname dir type opts freq passno
fsname := fstabUnescape.Replace(fields[0])
dir := fstabUnescape.Replace(fields[1])
fstype := fstabUnescape.Replace(fields[2])
if mnt == dir {
info := &MountInfo{
FSName: fsname,
Type: fstype,
}
return info, nil
}
}
return nil, errNotFound
}
-28
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@@ -1,28 +0,0 @@
package record
import (
"bytes"
"io"
"sync"
)
// Buffer is like bytes.Buffer but safe to access from multiple
// goroutines.
type Buffer struct {
mu sync.Mutex
buf bytes.Buffer
}
var _ = io.Writer(&Buffer{})
func (b *Buffer) Write(p []byte) (n int, err error) {
b.mu.Lock()
defer b.mu.Unlock()
return b.buf.Write(p)
}
func (b *Buffer) Bytes() []byte {
b.mu.Lock()
defer b.mu.Unlock()
return b.buf.Bytes()
}
-409
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@@ -1,409 +0,0 @@
package record // import "bazil.org/fuse/fs/fstestutil/record"
import (
"sync"
"sync/atomic"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"golang.org/x/net/context"
)
// Writes gathers data from FUSE Write calls.
type Writes struct {
buf Buffer
}
var _ = fs.HandleWriter(&Writes{})
func (w *Writes) Write(ctx context.Context, req *fuse.WriteRequest, resp *fuse.WriteResponse) error {
n, err := w.buf.Write(req.Data)
resp.Size = n
if err != nil {
return err
}
return nil
}
func (w *Writes) RecordedWriteData() []byte {
return w.buf.Bytes()
}
// Counter records number of times a thing has occurred.
type Counter struct {
count uint32
}
func (r *Counter) Inc() {
atomic.AddUint32(&r.count, 1)
}
func (r *Counter) Count() uint32 {
return atomic.LoadUint32(&r.count)
}
// MarkRecorder records whether a thing has occurred.
type MarkRecorder struct {
count Counter
}
func (r *MarkRecorder) Mark() {
r.count.Inc()
}
func (r *MarkRecorder) Recorded() bool {
return r.count.Count() > 0
}
// Flushes notes whether a FUSE Flush call has been seen.
type Flushes struct {
rec MarkRecorder
}
var _ = fs.HandleFlusher(&Flushes{})
func (r *Flushes) Flush(ctx context.Context, req *fuse.FlushRequest) error {
r.rec.Mark()
return nil
}
func (r *Flushes) RecordedFlush() bool {
return r.rec.Recorded()
}
type Recorder struct {
mu sync.Mutex
val interface{}
}
// Record that we've seen value. A nil value is indistinguishable from
// no value recorded.
func (r *Recorder) Record(value interface{}) {
r.mu.Lock()
r.val = value
r.mu.Unlock()
}
func (r *Recorder) Recorded() interface{} {
r.mu.Lock()
val := r.val
r.mu.Unlock()
return val
}
type RequestRecorder struct {
rec Recorder
}
// Record a fuse.Request, after zeroing header fields that are hard to
// reproduce.
//
// Make sure to record a copy, not the original request.
func (r *RequestRecorder) RecordRequest(req fuse.Request) {
hdr := req.Hdr()
*hdr = fuse.Header{}
r.rec.Record(req)
}
func (r *RequestRecorder) Recorded() fuse.Request {
val := r.rec.Recorded()
if val == nil {
return nil
}
return val.(fuse.Request)
}
// Setattrs records a Setattr request and its fields.
type Setattrs struct {
rec RequestRecorder
}
var _ = fs.NodeSetattrer(&Setattrs{})
func (r *Setattrs) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil
}
func (r *Setattrs) RecordedSetattr() fuse.SetattrRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.SetattrRequest{}
}
return *(val.(*fuse.SetattrRequest))
}
// Fsyncs records an Fsync request and its fields.
type Fsyncs struct {
rec RequestRecorder
}
var _ = fs.NodeFsyncer(&Fsyncs{})
func (r *Fsyncs) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil
}
func (r *Fsyncs) RecordedFsync() fuse.FsyncRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.FsyncRequest{}
}
return *(val.(*fuse.FsyncRequest))
}
// Mkdirs records a Mkdir request and its fields.
type Mkdirs struct {
rec RequestRecorder
}
var _ = fs.NodeMkdirer(&Mkdirs{})
// Mkdir records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Mkdirs) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil, fuse.EIO
}
// RecordedMkdir returns information about the Mkdir request.
// If no request was seen, returns a zero value.
func (r *Mkdirs) RecordedMkdir() fuse.MkdirRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.MkdirRequest{}
}
return *(val.(*fuse.MkdirRequest))
}
// Symlinks records a Symlink request and its fields.
type Symlinks struct {
rec RequestRecorder
}
var _ = fs.NodeSymlinker(&Symlinks{})
// Symlink records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Symlinks) Symlink(ctx context.Context, req *fuse.SymlinkRequest) (fs.Node, error) {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil, fuse.EIO
}
// RecordedSymlink returns information about the Symlink request.
// If no request was seen, returns a zero value.
func (r *Symlinks) RecordedSymlink() fuse.SymlinkRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.SymlinkRequest{}
}
return *(val.(*fuse.SymlinkRequest))
}
// Links records a Link request and its fields.
type Links struct {
rec RequestRecorder
}
var _ = fs.NodeLinker(&Links{})
// Link records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Links) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (fs.Node, error) {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil, fuse.EIO
}
// RecordedLink returns information about the Link request.
// If no request was seen, returns a zero value.
func (r *Links) RecordedLink() fuse.LinkRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.LinkRequest{}
}
return *(val.(*fuse.LinkRequest))
}
// Mknods records a Mknod request and its fields.
type Mknods struct {
rec RequestRecorder
}
var _ = fs.NodeMknoder(&Mknods{})
// Mknod records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Mknods) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil, fuse.EIO
}
// RecordedMknod returns information about the Mknod request.
// If no request was seen, returns a zero value.
func (r *Mknods) RecordedMknod() fuse.MknodRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.MknodRequest{}
}
return *(val.(*fuse.MknodRequest))
}
// Opens records a Open request and its fields.
type Opens struct {
rec RequestRecorder
}
var _ = fs.NodeOpener(&Opens{})
// Open records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Opens) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil, fuse.EIO
}
// RecordedOpen returns information about the Open request.
// If no request was seen, returns a zero value.
func (r *Opens) RecordedOpen() fuse.OpenRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.OpenRequest{}
}
return *(val.(*fuse.OpenRequest))
}
// Getxattrs records a Getxattr request and its fields.
type Getxattrs struct {
rec RequestRecorder
}
var _ = fs.NodeGetxattrer(&Getxattrs{})
// Getxattr records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Getxattrs) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
tmp := *req
r.rec.RecordRequest(&tmp)
return fuse.ErrNoXattr
}
// RecordedGetxattr returns information about the Getxattr request.
// If no request was seen, returns a zero value.
func (r *Getxattrs) RecordedGetxattr() fuse.GetxattrRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.GetxattrRequest{}
}
return *(val.(*fuse.GetxattrRequest))
}
// Listxattrs records a Listxattr request and its fields.
type Listxattrs struct {
rec RequestRecorder
}
var _ = fs.NodeListxattrer(&Listxattrs{})
// Listxattr records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Listxattrs) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
tmp := *req
r.rec.RecordRequest(&tmp)
return fuse.ErrNoXattr
}
// RecordedListxattr returns information about the Listxattr request.
// If no request was seen, returns a zero value.
func (r *Listxattrs) RecordedListxattr() fuse.ListxattrRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.ListxattrRequest{}
}
return *(val.(*fuse.ListxattrRequest))
}
// Setxattrs records a Setxattr request and its fields.
type Setxattrs struct {
rec RequestRecorder
}
var _ = fs.NodeSetxattrer(&Setxattrs{})
// Setxattr records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Setxattrs) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
tmp := *req
// The byte slice points to memory that will be reused, so make a
// deep copy.
tmp.Xattr = append([]byte(nil), req.Xattr...)
r.rec.RecordRequest(&tmp)
return nil
}
// RecordedSetxattr returns information about the Setxattr request.
// If no request was seen, returns a zero value.
func (r *Setxattrs) RecordedSetxattr() fuse.SetxattrRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.SetxattrRequest{}
}
return *(val.(*fuse.SetxattrRequest))
}
// Removexattrs records a Removexattr request and its fields.
type Removexattrs struct {
rec RequestRecorder
}
var _ = fs.NodeRemovexattrer(&Removexattrs{})
// Removexattr records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Removexattrs) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil
}
// RecordedRemovexattr returns information about the Removexattr request.
// If no request was seen, returns a zero value.
func (r *Removexattrs) RecordedRemovexattr() fuse.RemovexattrRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.RemovexattrRequest{}
}
return *(val.(*fuse.RemovexattrRequest))
}
// Creates records a Create request and its fields.
type Creates struct {
rec RequestRecorder
}
var _ = fs.NodeCreater(&Creates{})
// Create records the request and returns an error. Most callers should
// wrap this call in a function that returns a more useful result.
func (r *Creates) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
tmp := *req
r.rec.RecordRequest(&tmp)
return nil, nil, fuse.EIO
}
// RecordedCreate returns information about the Create request.
// If no request was seen, returns a zero value.
func (r *Creates) RecordedCreate() fuse.CreateRequest {
val := r.rec.Recorded()
if val == nil {
return fuse.CreateRequest{}
}
return *(val.(*fuse.CreateRequest))
}
-55
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@@ -1,55 +0,0 @@
package record
import (
"sync"
"time"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"golang.org/x/net/context"
)
type nothing struct{}
// ReleaseWaiter notes whether a FUSE Release call has been seen.
//
// Releases are not guaranteed to happen synchronously with any client
// call, so they must be waited for.
type ReleaseWaiter struct {
once sync.Once
seen chan nothing
}
var _ = fs.HandleReleaser(&ReleaseWaiter{})
func (r *ReleaseWaiter) init() {
r.once.Do(func() {
r.seen = make(chan nothing, 1)
})
}
func (r *ReleaseWaiter) Release(ctx context.Context, req *fuse.ReleaseRequest) error {
r.init()
close(r.seen)
return nil
}
// WaitForRelease waits for Release to be called.
//
// With zero duration, wait forever. Otherwise, timeout early
// in a more controller way than `-test.timeout`.
//
// Returns whether a Release was seen. Always true if dur==0.
func (r *ReleaseWaiter) WaitForRelease(dur time.Duration) bool {
r.init()
var timeout <-chan time.Time
if dur > 0 {
timeout = time.After(dur)
}
select {
case <-r.seen:
return true
case <-timeout:
return false
}
}
-55
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@@ -1,55 +0,0 @@
package fstestutil
import (
"os"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"golang.org/x/net/context"
)
// SimpleFS is a trivial FS that just implements the Root method.
type SimpleFS struct {
Node fs.Node
}
var _ = fs.FS(SimpleFS{})
func (f SimpleFS) Root() (fs.Node, error) {
return f.Node, nil
}
// File can be embedded in a struct to make it look like a file.
type File struct{}
func (f File) Attr(ctx context.Context, a *fuse.Attr) error {
a.Mode = 0666
return nil
}
// Dir can be embedded in a struct to make it look like a directory.
type Dir struct{}
func (f Dir) Attr(ctx context.Context, a *fuse.Attr) error {
a.Mode = os.ModeDir | 0777
return nil
}
// ChildMap is a directory with child nodes looked up from a map.
type ChildMap map[string]fs.Node
var _ = fs.Node(&ChildMap{})
var _ = fs.NodeStringLookuper(&ChildMap{})
func (f *ChildMap) Attr(ctx context.Context, a *fuse.Attr) error {
a.Mode = os.ModeDir | 0777
return nil
}
func (f *ChildMap) Lookup(ctx context.Context, name string) (fs.Node, error) {
child, ok := (*f)[name]
if !ok {
return nil, fuse.ENOENT
}
return child, nil
}
-67
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@@ -1,67 +0,0 @@
package fs_test
import (
"errors"
"flag"
"os"
"os/exec"
"path/filepath"
"testing"
)
var childHelpers = map[string]func(){}
type childProcess struct {
name string
fn func()
}
var _ flag.Value = (*childProcess)(nil)
func (c *childProcess) String() string {
return c.name
}
func (c *childProcess) Set(s string) error {
fn, ok := childHelpers[s]
if !ok {
return errors.New("helper not found")
}
c.name = s
c.fn = fn
return nil
}
var childMode childProcess
func init() {
flag.Var(&childMode, "fuse.internal.child", "internal use only")
}
// childCmd prepares a test function to be run in a subprocess, with
// childMode set to true. Caller must still call Run or Start.
//
// Re-using the test executable as the subprocess is useful because
// now test executables can e.g. be cross-compiled, transferred
// between hosts, and run in settings where the whole Go development
// environment is not installed.
func childCmd(childName string) (*exec.Cmd, error) {
// caller may set cwd, so we can't rely on relative paths
executable, err := filepath.Abs(os.Args[0])
if err != nil {
return nil, err
}
cmd := exec.Command(executable, "-fuse.internal.child="+childName)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
return cmd, nil
}
func TestMain(m *testing.M) {
flag.Parse()
if childMode.fn != nil {
childMode.fn()
os.Exit(0)
}
os.Exit(m.Run())
}
-30
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@@ -1,30 +0,0 @@
package fs_test
import (
"testing"
"bazil.org/fuse/fs/fstestutil"
"golang.org/x/sys/unix"
)
type exchangeData struct {
fstestutil.File
// this struct cannot be zero size or multiple instances may look identical
_ int
}
func TestExchangeDataNotSupported(t *testing.T) {
t.Parallel()
mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{&fstestutil.ChildMap{
"one": &exchangeData{},
"two": &exchangeData{},
}}, nil)
if err != nil {
t.Fatal(err)
}
defer mnt.Close()
if err := unix.Exchangedata(mnt.Dir+"/one", mnt.Dir+"/two", 0); err != unix.ENOTSUP {
t.Fatalf("expected ENOTSUP from exchangedata: %v", err)
}
}
-2867
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File diff suppressed because it is too large Load Diff
-63
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@@ -1,63 +0,0 @@
package fuse_test
import (
"os"
"testing"
"bazil.org/fuse"
)
func TestOpenFlagsAccmodeMaskReadWrite(t *testing.T) {
var f = fuse.OpenFlags(os.O_RDWR | os.O_SYNC)
if g, e := f&fuse.OpenAccessModeMask, fuse.OpenReadWrite; g != e {
t.Fatalf("OpenAccessModeMask behaves wrong: %v: %o != %o", f, g, e)
}
if f.IsReadOnly() {
t.Fatalf("IsReadOnly is wrong: %v", f)
}
if f.IsWriteOnly() {
t.Fatalf("IsWriteOnly is wrong: %v", f)
}
if !f.IsReadWrite() {
t.Fatalf("IsReadWrite is wrong: %v", f)
}
}
func TestOpenFlagsAccmodeMaskReadOnly(t *testing.T) {
var f = fuse.OpenFlags(os.O_RDONLY | os.O_SYNC)
if g, e := f&fuse.OpenAccessModeMask, fuse.OpenReadOnly; g != e {
t.Fatalf("OpenAccessModeMask behaves wrong: %v: %o != %o", f, g, e)
}
if !f.IsReadOnly() {
t.Fatalf("IsReadOnly is wrong: %v", f)
}
if f.IsWriteOnly() {
t.Fatalf("IsWriteOnly is wrong: %v", f)
}
if f.IsReadWrite() {
t.Fatalf("IsReadWrite is wrong: %v", f)
}
}
func TestOpenFlagsAccmodeMaskWriteOnly(t *testing.T) {
var f = fuse.OpenFlags(os.O_WRONLY | os.O_SYNC)
if g, e := f&fuse.OpenAccessModeMask, fuse.OpenWriteOnly; g != e {
t.Fatalf("OpenAccessModeMask behaves wrong: %v: %o != %o", f, g, e)
}
if f.IsReadOnly() {
t.Fatalf("IsReadOnly is wrong: %v", f)
}
if !f.IsWriteOnly() {
t.Fatalf("IsWriteOnly is wrong: %v", f)
}
if f.IsReadWrite() {
t.Fatalf("IsReadWrite is wrong: %v", f)
}
}
func TestOpenFlagsString(t *testing.T) {
var f = fuse.OpenFlags(os.O_RDWR | os.O_SYNC | os.O_APPEND)
if g, e := f.String(), "OpenReadWrite+OpenAppend+OpenSync"; g != e {
t.Fatalf("OpenFlags.String: %q != %q", g, e)
}
}
-64
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@@ -1,64 +0,0 @@
// Test for adjustable timeout between a FUSE request and the daemon's response.
//
// +build darwin freebsd
package fuse_test
import (
"os"
"runtime"
"syscall"
"testing"
"time"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"bazil.org/fuse/fs/fstestutil"
"golang.org/x/net/context"
)
type slowCreaterDir struct {
fstestutil.Dir
}
var _ fs.NodeCreater = slowCreaterDir{}
func (c slowCreaterDir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
time.Sleep(10 * time.Second)
// pick a really distinct error, to identify it later
return nil, nil, fuse.Errno(syscall.ENAMETOOLONG)
}
func TestMountOptionDaemonTimeout(t *testing.T) {
if runtime.GOOS != "darwin" && runtime.GOOS != "freebsd" {
return
}
if testing.Short() {
t.Skip("skipping time-based test in short mode")
}
t.Parallel()
mnt, err := fstestutil.MountedT(t,
fstestutil.SimpleFS{slowCreaterDir{}},
nil,
fuse.DaemonTimeout("2"),
)
if err != nil {
t.Fatal(err)
}
defer mnt.Close()
// This should fail by the kernel timing out the request.
f, err := os.Create(mnt.Dir + "/child")
if err == nil {
f.Close()
t.Fatal("expected an error")
}
perr, ok := err.(*os.PathError)
if !ok {
t.Fatalf("expected PathError, got %T: %v", err, err)
}
if perr.Err == syscall.ENAMETOOLONG {
t.Fatalf("expected other than ENAMETOOLONG, got %T: %v", err, err)
}
}
-10
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@@ -1,10 +0,0 @@
package fuse
// for TestMountOptionCommaError
func ForTestSetMountOption(k, v string) MountOption {
fn := func(conf *mountConfig) error {
conf.options[k] = v
return nil
}
return fn
}
-31
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@@ -1,31 +0,0 @@
// This file contains tests for platforms that have no escape
// mechanism for including commas in mount options.
//
// +build darwin
package fuse_test
import (
"runtime"
"testing"
"bazil.org/fuse"
"bazil.org/fuse/fs/fstestutil"
)
func TestMountOptionCommaError(t *testing.T) {
t.Parallel()
// this test is not tied to any specific option, it just needs
// some string content
var evil = "FuseTest,Marker"
mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{fstestutil.Dir{}}, nil,
fuse.ForTestSetMountOption("fusetest", evil),
)
if err == nil {
mnt.Close()
t.Fatal("expected an error about commas")
}
if g, e := err.Error(), `mount options cannot contain commas on `+runtime.GOOS+`: "fusetest"="FuseTest,Marker"`; g != e {
t.Fatalf("wrong error: %q != %q", g, e)
}
}
-231
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@@ -1,231 +0,0 @@
package fuse_test
import (
"os"
"runtime"
"syscall"
"testing"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"bazil.org/fuse/fs/fstestutil"
"golang.org/x/net/context"
)
func init() {
fstestutil.DebugByDefault()
}
func TestMountOptionFSName(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.Skip("FreeBSD does not support FSName")
}
t.Parallel()
const name = "FuseTestMarker"
mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{fstestutil.Dir{}}, nil,
fuse.FSName(name),
)
if err != nil {
t.Fatal(err)
}
defer mnt.Close()
info, err := fstestutil.GetMountInfo(mnt.Dir)
if err != nil {
t.Fatal(err)
}
if g, e := info.FSName, name; g != e {
t.Errorf("wrong FSName: %q != %q", g, e)
}
}
func testMountOptionFSNameEvil(t *testing.T, evil string) {
if runtime.GOOS == "freebsd" {
t.Skip("FreeBSD does not support FSName")
}
t.Parallel()
var name = "FuseTest" + evil + "Marker"
mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{fstestutil.Dir{}}, nil,
fuse.FSName(name),
)
if err != nil {
t.Fatal(err)
}
defer mnt.Close()
info, err := fstestutil.GetMountInfo(mnt.Dir)
if err != nil {
t.Fatal(err)
}
if g, e := info.FSName, name; g != e {
t.Errorf("wrong FSName: %q != %q", g, e)
}
}
func TestMountOptionFSNameEvilComma(t *testing.T) {
if runtime.GOOS == "darwin" {
// see TestMountOptionCommaError for a test that enforces we
// at least give a nice error, instead of corrupting the mount
// options
t.Skip("TODO: OS X gets this wrong, commas in mount options cannot be escaped at all")
}
testMountOptionFSNameEvil(t, ",")
}
func TestMountOptionFSNameEvilSpace(t *testing.T) {
testMountOptionFSNameEvil(t, " ")
}
func TestMountOptionFSNameEvilTab(t *testing.T) {
testMountOptionFSNameEvil(t, "\t")
}
func TestMountOptionFSNameEvilNewline(t *testing.T) {
testMountOptionFSNameEvil(t, "\n")
}
func TestMountOptionFSNameEvilBackslash(t *testing.T) {
testMountOptionFSNameEvil(t, `\`)
}
func TestMountOptionFSNameEvilBackslashDouble(t *testing.T) {
// catch double-unescaping, if it were to happen
testMountOptionFSNameEvil(t, `\\`)
}
func TestMountOptionSubtype(t *testing.T) {
if runtime.GOOS == "darwin" {
t.Skip("OS X does not support Subtype")
}
if runtime.GOOS == "freebsd" {
t.Skip("FreeBSD does not support Subtype")
}
t.Parallel()
const name = "FuseTestMarker"
mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{fstestutil.Dir{}}, nil,
fuse.Subtype(name),
)
if err != nil {
t.Fatal(err)
}
defer mnt.Close()
info, err := fstestutil.GetMountInfo(mnt.Dir)
if err != nil {
t.Fatal(err)
}
if g, e := info.Type, "fuse."+name; g != e {
t.Errorf("wrong Subtype: %q != %q", g, e)
}
}
// TODO test LocalVolume
// TODO test AllowOther; hard because needs system-level authorization
func TestMountOptionAllowOtherThenAllowRoot(t *testing.T) {
t.Parallel()
mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{fstestutil.Dir{}}, nil,
fuse.AllowOther(),
fuse.AllowRoot(),
)
if err == nil {
mnt.Close()
}
if g, e := err, fuse.ErrCannotCombineAllowOtherAndAllowRoot; g != e {
t.Fatalf("wrong error: %v != %v", g, e)
}
}
// TODO test AllowRoot; hard because needs system-level authorization
func TestMountOptionAllowRootThenAllowOther(t *testing.T) {
t.Parallel()
mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{fstestutil.Dir{}}, nil,
fuse.AllowRoot(),
fuse.AllowOther(),
)
if err == nil {
mnt.Close()
}
if g, e := err, fuse.ErrCannotCombineAllowOtherAndAllowRoot; g != e {
t.Fatalf("wrong error: %v != %v", g, e)
}
}
type unwritableFile struct{}
func (f unwritableFile) Attr(ctx context.Context, a *fuse.Attr) error {
a.Mode = 0000
return nil
}
func TestMountOptionDefaultPermissions(t *testing.T) {
if runtime.GOOS == "freebsd" {
t.Skip("FreeBSD does not support DefaultPermissions")
}
t.Parallel()
mnt, err := fstestutil.MountedT(t,
fstestutil.SimpleFS{
&fstestutil.ChildMap{"child": unwritableFile{}},
},
nil,
fuse.DefaultPermissions(),
)
if err != nil {
t.Fatal(err)
}
defer mnt.Close()
// This will be prevented by kernel-level access checking when
// DefaultPermissions is used.
f, err := os.OpenFile(mnt.Dir+"/child", os.O_WRONLY, 0000)
if err == nil {
f.Close()
t.Fatal("expected an error")
}
if !os.IsPermission(err) {
t.Fatalf("expected a permission error, got %T: %v", err, err)
}
}
type createrDir struct {
fstestutil.Dir
}
var _ fs.NodeCreater = createrDir{}
func (createrDir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
// pick a really distinct error, to identify it later
return nil, nil, fuse.Errno(syscall.ENAMETOOLONG)
}
func TestMountOptionReadOnly(t *testing.T) {
t.Parallel()
mnt, err := fstestutil.MountedT(t,
fstestutil.SimpleFS{createrDir{}},
nil,
fuse.ReadOnly(),
)
if err != nil {
t.Fatal(err)
}
defer mnt.Close()
// This will be prevented by kernel-level access checking when
// ReadOnly is used.
f, err := os.Create(mnt.Dir + "/child")
if err == nil {
f.Close()
t.Fatal("expected an error")
}
perr, ok := err.(*os.PathError)
if !ok {
t.Fatalf("expected PathError, got %T: %v", err, err)
}
if perr.Err != syscall.EROFS {
t.Fatalf("expected EROFS, got %T: %v", err, err)
}
}
-13
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@@ -1,13 +0,0 @@
// Package syscallx provides wrappers that make syscalls on various
// platforms more interoperable.
//
// The API intentionally omits the OS X-specific position and option
// arguments for extended attribute calls.
//
// Not having position means it might not be useful for accessing the
// resource fork. If that's needed by code inside fuse, a function
// with a different name may be added on the side.
//
// Options can be implemented with separate wrappers, in the style of
// Linux getxattr/lgetxattr/fgetxattr.
package syscallx // import "bazil.org/fuse/syscallx"
-34
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@@ -1,34 +0,0 @@
#!/bin/sh
set -e
mksys="$(go env GOROOT)/src/pkg/syscall/mksyscall.pl"
fix() {
sed 's,^package syscall$,&x\nimport "syscall",' \
| gofmt -r='BytePtrFromString -> syscall.BytePtrFromString' \
| gofmt -r='Syscall6 -> syscall.Syscall6' \
| gofmt -r='Syscall -> syscall.Syscall' \
| gofmt -r='SYS_GETXATTR -> syscall.SYS_GETXATTR' \
| gofmt -r='SYS_LISTXATTR -> syscall.SYS_LISTXATTR' \
| gofmt -r='SYS_SETXATTR -> syscall.SYS_SETXATTR' \
| gofmt -r='SYS_REMOVEXATTR -> syscall.SYS_REMOVEXATTR' \
| gofmt -r='SYS_MSYNC -> syscall.SYS_MSYNC'
}
cd "$(dirname "$0")"
$mksys xattr_darwin.go \
| fix \
>xattr_darwin_amd64.go
$mksys -l32 xattr_darwin.go \
| fix \
>xattr_darwin_386.go
$mksys msync.go \
| fix \
>msync_amd64.go
$mksys -l32 msync.go \
| fix \
>msync_386.go
-9
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@@ -1,9 +0,0 @@
package syscallx
/* This is the source file for msync_*.go, to regenerate run
./generate
*/
//sys Msync(b []byte, flags int) (err error)
-24
View File
@@ -1,24 +0,0 @@
// mksyscall.pl -l32 msync.go
// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
package syscallx
import "syscall"
import "unsafe"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Msync(b []byte, flags int) (err error) {
var _p0 unsafe.Pointer
if len(b) > 0 {
_p0 = unsafe.Pointer(&b[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall.Syscall(syscall.SYS_MSYNC, uintptr(_p0), uintptr(len(b)), uintptr(flags))
if e1 != 0 {
err = e1
}
return
}
-24
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@@ -1,24 +0,0 @@
// mksyscall.pl msync.go
// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
package syscallx
import "syscall"
import "unsafe"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Msync(b []byte, flags int) (err error) {
var _p0 unsafe.Pointer
if len(b) > 0 {
_p0 = unsafe.Pointer(&b[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall.Syscall(syscall.SYS_MSYNC, uintptr(_p0), uintptr(len(b)), uintptr(flags))
if e1 != 0 {
err = e1
}
return
}
-4
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@@ -1,4 +0,0 @@
package syscallx
// make us look more like package syscall, so mksyscall.pl output works
var _zero uintptr
-26
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@@ -1,26 +0,0 @@
// +build !darwin
package syscallx
// This file just contains wrappers for platforms that already have
// the right stuff in golang.org/x/sys/unix.
import (
"golang.org/x/sys/unix"
)
func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
return unix.Getxattr(path, attr, dest)
}
func Listxattr(path string, dest []byte) (sz int, err error) {
return unix.Listxattr(path, dest)
}
func Setxattr(path string, attr string, data []byte, flags int) (err error) {
return unix.Setxattr(path, attr, data, flags)
}
func Removexattr(path string, attr string) (err error) {
return unix.Removexattr(path, attr)
}
-38
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@@ -1,38 +0,0 @@
package syscallx
/* This is the source file for syscallx_darwin_*.go, to regenerate run
./generate
*/
// cannot use dest []byte here because OS X getxattr really wants a
// NULL to trigger size probing, size==0 is not enough
//
//sys getxattr(path string, attr string, dest *byte, size int, position uint32, options int) (sz int, err error)
func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
var destp *byte
if len(dest) > 0 {
destp = &dest[0]
}
return getxattr(path, attr, destp, len(dest), 0, 0)
}
//sys listxattr(path string, dest []byte, options int) (sz int, err error)
func Listxattr(path string, dest []byte) (sz int, err error) {
return listxattr(path, dest, 0)
}
//sys setxattr(path string, attr string, data []byte, position uint32, flags int) (err error)
func Setxattr(path string, attr string, data []byte, flags int) (err error) {
return setxattr(path, attr, data, 0, flags)
}
//sys removexattr(path string, attr string, options int) (err error)
func Removexattr(path string, attr string) (err error) {
return removexattr(path, attr, 0)
}
-97
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@@ -1,97 +0,0 @@
// mksyscall.pl -l32 xattr_darwin.go
// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
package syscallx
import "syscall"
import "unsafe"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func getxattr(path string, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(position), uintptr(options))
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func listxattr(path string, dest []byte, options int) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(dest) > 0 {
_p1 = unsafe.Pointer(&dest[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)), uintptr(options), 0, 0)
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setxattr(path string, attr string, data []byte, position uint32, flags int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(data) > 0 {
_p2 = unsafe.Pointer(&data[0])
} else {
_p2 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall.Syscall6(syscall.SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(position), uintptr(flags))
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func removexattr(path string, attr string, options int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := syscall.Syscall(syscall.SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(options))
if e1 != 0 {
err = e1
}
return
}
-97
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@@ -1,97 +0,0 @@
// mksyscall.pl xattr_darwin.go
// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
package syscallx
import "syscall"
import "unsafe"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func getxattr(path string, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(position), uintptr(options))
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func listxattr(path string, dest []byte, options int) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(dest) > 0 {
_p1 = unsafe.Pointer(&dest[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)), uintptr(options), 0, 0)
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setxattr(path string, attr string, data []byte, position uint32, flags int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(data) > 0 {
_p2 = unsafe.Pointer(&data[0])
} else {
_p2 = unsafe.Pointer(&_zero)
}
_, _, e1 := syscall.Syscall6(syscall.SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(position), uintptr(flags))
if e1 != 0 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func removexattr(path string, attr string, options int) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := syscall.Syscall(syscall.SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(options))
if e1 != 0 {
err = e1
}
return
}