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-rw-r--r--src/os/os_unix_test.go322
1 files changed, 322 insertions, 0 deletions
diff --git a/src/os/os_unix_test.go b/src/os/os_unix_test.go
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+++ b/src/os/os_unix_test.go
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+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd js,wasm linux netbsd openbsd solaris
+
+package os_test
+
+import (
+ "io"
+ "os"
+ . "os"
+ "path/filepath"
+ "runtime"
+ "strings"
+ "syscall"
+ "testing"
+ "time"
+)
+
+func init() {
+ isReadonlyError = func(err error) bool { return err == syscall.EROFS }
+}
+
+// For TestRawConnReadWrite.
+type syscallDescriptor = int
+
+func checkUidGid(t *testing.T, path string, uid, gid int) {
+ dir, err := Lstat(path)
+ if err != nil {
+ t.Fatalf("Lstat %q (looking for uid/gid %d/%d): %s", path, uid, gid, err)
+ }
+ sys := dir.Sys().(*syscall.Stat_t)
+ if int(sys.Uid) != uid {
+ t.Errorf("Lstat %q: uid %d want %d", path, sys.Uid, uid)
+ }
+ if int(sys.Gid) != gid {
+ t.Errorf("Lstat %q: gid %d want %d", path, sys.Gid, gid)
+ }
+}
+
+func TestChown(t *testing.T) {
+ // Use TempDir() to make sure we're on a local file system,
+ // so that the group ids returned by Getgroups will be allowed
+ // on the file. On NFS, the Getgroups groups are
+ // basically useless.
+ f := newFile("TestChown", t)
+ defer Remove(f.Name())
+ defer f.Close()
+ dir, err := f.Stat()
+ if err != nil {
+ t.Fatalf("stat %s: %s", f.Name(), err)
+ }
+
+ // Can't change uid unless root, but can try
+ // changing the group id. First try our current group.
+ gid := Getgid()
+ t.Log("gid:", gid)
+ if err = Chown(f.Name(), -1, gid); err != nil {
+ t.Fatalf("chown %s -1 %d: %s", f.Name(), gid, err)
+ }
+ sys := dir.Sys().(*syscall.Stat_t)
+ checkUidGid(t, f.Name(), int(sys.Uid), gid)
+
+ // Then try all the auxiliary groups.
+ groups, err := Getgroups()
+ if err != nil {
+ t.Fatalf("getgroups: %s", err)
+ }
+ t.Log("groups: ", groups)
+ for _, g := range groups {
+ if err = Chown(f.Name(), -1, g); err != nil {
+ t.Fatalf("chown %s -1 %d: %s", f.Name(), g, err)
+ }
+ checkUidGid(t, f.Name(), int(sys.Uid), g)
+
+ // change back to gid to test fd.Chown
+ if err = f.Chown(-1, gid); err != nil {
+ t.Fatalf("fchown %s -1 %d: %s", f.Name(), gid, err)
+ }
+ checkUidGid(t, f.Name(), int(sys.Uid), gid)
+ }
+}
+
+func TestFileChown(t *testing.T) {
+ // Use TempDir() to make sure we're on a local file system,
+ // so that the group ids returned by Getgroups will be allowed
+ // on the file. On NFS, the Getgroups groups are
+ // basically useless.
+ f := newFile("TestFileChown", t)
+ defer Remove(f.Name())
+ defer f.Close()
+ dir, err := f.Stat()
+ if err != nil {
+ t.Fatalf("stat %s: %s", f.Name(), err)
+ }
+
+ // Can't change uid unless root, but can try
+ // changing the group id. First try our current group.
+ gid := Getgid()
+ t.Log("gid:", gid)
+ if err = f.Chown(-1, gid); err != nil {
+ t.Fatalf("fchown %s -1 %d: %s", f.Name(), gid, err)
+ }
+ sys := dir.Sys().(*syscall.Stat_t)
+ checkUidGid(t, f.Name(), int(sys.Uid), gid)
+
+ // Then try all the auxiliary groups.
+ groups, err := Getgroups()
+ if err != nil {
+ t.Fatalf("getgroups: %s", err)
+ }
+ t.Log("groups: ", groups)
+ for _, g := range groups {
+ if err = f.Chown(-1, g); err != nil {
+ t.Fatalf("fchown %s -1 %d: %s", f.Name(), g, err)
+ }
+ checkUidGid(t, f.Name(), int(sys.Uid), g)
+
+ // change back to gid to test fd.Chown
+ if err = f.Chown(-1, gid); err != nil {
+ t.Fatalf("fchown %s -1 %d: %s", f.Name(), gid, err)
+ }
+ checkUidGid(t, f.Name(), int(sys.Uid), gid)
+ }
+}
+
+func TestLchown(t *testing.T) {
+ // Use TempDir() to make sure we're on a local file system,
+ // so that the group ids returned by Getgroups will be allowed
+ // on the file. On NFS, the Getgroups groups are
+ // basically useless.
+ f := newFile("TestLchown", t)
+ defer Remove(f.Name())
+ defer f.Close()
+ dir, err := f.Stat()
+ if err != nil {
+ t.Fatalf("stat %s: %s", f.Name(), err)
+ }
+
+ linkname := f.Name() + "2"
+ if err := Symlink(f.Name(), linkname); err != nil {
+ if runtime.GOOS == "android" && IsPermission(err) {
+ t.Skip("skipping test on Android; permission error creating symlink")
+ }
+ t.Fatalf("link %s -> %s: %v", f.Name(), linkname, err)
+ }
+ defer Remove(linkname)
+
+ // Can't change uid unless root, but can try
+ // changing the group id. First try our current group.
+ gid := Getgid()
+ t.Log("gid:", gid)
+ if err = Lchown(linkname, -1, gid); err != nil {
+ if err, ok := err.(*PathError); ok && err.Err == syscall.ENOSYS {
+ t.Skip("lchown is unavailable")
+ }
+ t.Fatalf("lchown %s -1 %d: %s", linkname, gid, err)
+ }
+ sys := dir.Sys().(*syscall.Stat_t)
+ checkUidGid(t, linkname, int(sys.Uid), gid)
+
+ // Then try all the auxiliary groups.
+ groups, err := Getgroups()
+ if err != nil {
+ t.Fatalf("getgroups: %s", err)
+ }
+ t.Log("groups: ", groups)
+ for _, g := range groups {
+ if err = Lchown(linkname, -1, g); err != nil {
+ t.Fatalf("lchown %s -1 %d: %s", linkname, g, err)
+ }
+ checkUidGid(t, linkname, int(sys.Uid), g)
+
+ // Check that link target's gid is unchanged.
+ checkUidGid(t, f.Name(), int(sys.Uid), int(sys.Gid))
+ }
+}
+
+// Issue 16919: Readdir must return a non-empty slice or an error.
+func TestReaddirRemoveRace(t *testing.T) {
+ oldStat := *LstatP
+ defer func() { *LstatP = oldStat }()
+ *LstatP = func(name string) (FileInfo, error) {
+ if strings.HasSuffix(name, "some-file") {
+ // Act like it's been deleted.
+ return nil, ErrNotExist
+ }
+ return oldStat(name)
+ }
+ dir := newDir("TestReaddirRemoveRace", t)
+ defer RemoveAll(dir)
+ if err := os.WriteFile(filepath.Join(dir, "some-file"), []byte("hello"), 0644); err != nil {
+ t.Fatal(err)
+ }
+ d, err := Open(dir)
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer d.Close()
+ fis, err := d.Readdir(2) // notably, greater than zero
+ if len(fis) == 0 && err == nil {
+ // This is what used to happen (Issue 16919)
+ t.Fatal("Readdir = empty slice & err == nil")
+ }
+ if len(fis) != 0 || err != io.EOF {
+ t.Errorf("Readdir = %d entries: %v; want 0, io.EOF", len(fis), err)
+ for i, fi := range fis {
+ t.Errorf(" entry[%d]: %q, %v", i, fi.Name(), fi.Mode())
+ }
+ t.FailNow()
+ }
+}
+
+// Issue 23120: respect umask when doing Mkdir with the sticky bit
+func TestMkdirStickyUmask(t *testing.T) {
+ const umask = 0077
+ dir := newDir("TestMkdirStickyUmask", t)
+ defer RemoveAll(dir)
+ oldUmask := syscall.Umask(umask)
+ defer syscall.Umask(oldUmask)
+ p := filepath.Join(dir, "dir1")
+ if err := Mkdir(p, ModeSticky|0755); err != nil {
+ t.Fatal(err)
+ }
+ fi, err := Stat(p)
+ if err != nil {
+ t.Fatal(err)
+ }
+ if mode := fi.Mode(); (mode&umask) != 0 || (mode&^ModePerm) != (ModeDir|ModeSticky) {
+ t.Errorf("unexpected mode %s", mode)
+ }
+}
+
+// See also issues: 22939, 24331
+func newFileTest(t *testing.T, blocking bool) {
+ if runtime.GOOS == "js" {
+ t.Skipf("syscall.Pipe is not available on %s.", runtime.GOOS)
+ }
+
+ p := make([]int, 2)
+ if err := syscall.Pipe(p); err != nil {
+ t.Fatalf("pipe: %v", err)
+ }
+ defer syscall.Close(p[1])
+
+ // Set the read-side to non-blocking.
+ if !blocking {
+ if err := syscall.SetNonblock(p[0], true); err != nil {
+ syscall.Close(p[0])
+ t.Fatalf("SetNonblock: %v", err)
+ }
+ }
+ // Convert it to a file.
+ file := NewFile(uintptr(p[0]), "notapipe")
+ if file == nil {
+ syscall.Close(p[0])
+ t.Fatalf("failed to convert fd to file!")
+ }
+ defer file.Close()
+
+ timeToWrite := 100 * time.Millisecond
+ timeToDeadline := 1 * time.Millisecond
+ if !blocking {
+ // Use a longer time to avoid flakes.
+ // We won't be waiting this long anyhow.
+ timeToWrite = 1 * time.Second
+ }
+
+ // Try to read with deadline (but don't block forever).
+ b := make([]byte, 1)
+ timer := time.AfterFunc(timeToWrite, func() { syscall.Write(p[1], []byte("a")) })
+ defer timer.Stop()
+ file.SetReadDeadline(time.Now().Add(timeToDeadline))
+ _, err := file.Read(b)
+ if !blocking {
+ // We want it to fail with a timeout.
+ if !isDeadlineExceeded(err) {
+ t.Fatalf("No timeout reading from file: %v", err)
+ }
+ } else {
+ // We want it to succeed after 100ms
+ if err != nil {
+ t.Fatalf("Error reading from file: %v", err)
+ }
+ }
+}
+
+func TestNewFileBlock(t *testing.T) {
+ t.Parallel()
+ newFileTest(t, true)
+}
+
+func TestNewFileNonBlock(t *testing.T) {
+ t.Parallel()
+ newFileTest(t, false)
+}
+
+func TestSplitPath(t *testing.T) {
+ t.Parallel()
+ for _, tt := range []struct{ path, wantDir, wantBase string }{
+ {"a", ".", "a"},
+ {"a/", ".", "a"},
+ {"a//", ".", "a"},
+ {"a/b", "a", "b"},
+ {"a/b/", "a", "b"},
+ {"a/b/c", "a/b", "c"},
+ {"/a", "/", "a"},
+ {"/a/", "/", "a"},
+ {"/a/b", "/a", "b"},
+ {"/a/b/", "/a", "b"},
+ {"/a/b/c", "/a/b", "c"},
+ {"//a", "/", "a"},
+ {"//a/", "/", "a"},
+ {"///a", "/", "a"},
+ {"///a/", "/", "a"},
+ } {
+ if dir, base := SplitPath(tt.path); dir != tt.wantDir || base != tt.wantBase {
+ t.Errorf("splitPath(%q) = %q, %q, want %q, %q", tt.path, dir, base, tt.wantDir, tt.wantBase)
+ }
+ }
+}