| // Copyright 2024 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. |
| |
| //go:build zos |
| |
| package unix_test |
| |
| import ( |
| "os" |
| "testing" |
| |
| "golang.org/x/sys/unix" |
| ) |
| |
| func TestXattr(t *testing.T) { |
| defer chtmpdir(t)() |
| |
| f := "xattr1" |
| touch(t, f) |
| |
| xattrName := "system.filetag" |
| xattrDataSet := make([]byte, 4) |
| xattrDataSet[0] = 0xFF |
| xattrDataSet[1] = 0xFF |
| xattrDataSet[2] = 0 |
| xattrDataSet[3] = 0 |
| |
| err := unix.Setxattr(f, xattrName, xattrDataSet, 0) |
| if err != nil { |
| t.Fatalf("Setxattr: %v", err) |
| } |
| |
| // find size |
| size, err := unix.Listxattr(f, nil) |
| if err != nil { |
| t.Fatalf("Listxattr: %v", err) |
| } |
| |
| if size <= 0 { |
| t.Fatalf("Listxattr returned an empty list of attributes") |
| } |
| |
| buf := make([]byte, size) |
| read, err := unix.Listxattr(f, buf) |
| if err != nil { |
| t.Fatalf("Listxattr: %v", err) |
| } |
| |
| xattrs := stringsFromByteSlice(buf[:read]) |
| |
| xattrWant := xattrName |
| found := false |
| for _, name := range xattrs { |
| if name == xattrWant { |
| found = true |
| break |
| } |
| } |
| |
| if !found { |
| t.Errorf("Listxattr did not return previously set attribute '%s'", xattrName) |
| } |
| |
| // find size |
| size, err = unix.Getxattr(f, xattrName, nil) |
| if err != nil { |
| t.Fatalf("Getxattr: %v", err) |
| } |
| |
| if size <= 0 { |
| t.Fatalf("Getxattr returned an empty attribute") |
| } |
| |
| xattrDataGet := make([]byte, size) |
| _, err = unix.Getxattr(f, xattrName, xattrDataGet) |
| if err != nil { |
| t.Fatalf("Getxattr: %v", err) |
| } |
| got := string([]byte(xattrDataGet)) |
| if got != string(xattrDataSet) { |
| t.Errorf("Getxattr: expected attribute value %s, got %s", xattrDataSet, got) |
| } |
| |
| err = unix.Removexattr(f, xattrName) |
| if err != nil { |
| t.Fatalf("Removexattr: %v", err) |
| } |
| |
| //confirm xattr removed |
| // find size |
| size, err = unix.Listxattr(f, nil) |
| if err != nil { |
| t.Fatalf("Listxattr: %v", err) |
| } |
| if size != 0 { |
| buf := make([]byte, size) |
| read, err = unix.Listxattr(f, buf) |
| if err != nil { |
| t.Fatalf("Listxattr: %v", err) |
| } |
| |
| xattrs = stringsFromByteSlice(buf[:read]) |
| |
| found = false |
| for _, name := range xattrs { |
| if name == xattrWant { |
| found = true |
| break |
| } |
| if found { |
| t.Errorf("Removexattr failed to remove attribute '%s'", xattrName) |
| } |
| } |
| } |
| n := "nonexistent" |
| err = unix.Lsetxattr(n, xattrName, xattrDataSet, 0) |
| if err != unix.ENOENT { |
| t.Errorf("Lsetxattr: expected %v on non-existent file, got %v", unix.ENODATA, err) |
| } |
| |
| _, err = unix.Lgetxattr(f, n, nil) |
| if err != unix.ENODATA { |
| t.Errorf("Lgetxattr: %v", err) |
| } |
| |
| _, err = unix.Lgetxattr(n, xattrName, nil) |
| if err != unix.ENOENT { |
| t.Errorf("Lgetxattr: %v", err) |
| } |
| } |
| |
| func TestFdXattr(t *testing.T) { |
| file, err := os.CreateTemp("", "TestFdXattr") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.Remove(file.Name()) |
| defer file.Close() |
| |
| fd := int(file.Fd()) |
| xattrName := "system.filetag" |
| xattrDataSet := make([]byte, 4) |
| xattrDataSet[0] = 0xFF |
| xattrDataSet[1] = 0xFF |
| xattrDataSet[2] = 0 |
| xattrDataSet[3] = 0 |
| |
| err = unix.Fsetxattr(fd, xattrName, xattrDataSet, 0) |
| if err == unix.ENOTSUP || err == unix.EOPNOTSUPP { |
| t.Skip("filesystem does not support extended attributes, skipping test") |
| } else if err != nil { |
| t.Fatalf("Fsetxattr: %v", err) |
| } |
| |
| // find size |
| size, err := unix.Flistxattr(fd, nil) |
| if err != nil { |
| t.Fatalf("Flistxattr: %v", err) |
| } |
| if size <= 0 { |
| t.Fatalf("Flistxattr returned an empty list of attributes") |
| } |
| |
| buf := make([]byte, size) |
| read, err := unix.Flistxattr(fd, buf) |
| if err != nil { |
| t.Fatalf("Flistxattr: %v", err) |
| } |
| |
| xattrs := stringsFromByteSlice(buf[:read]) |
| |
| xattrWant := xattrName |
| found := false |
| for _, name := range xattrs { |
| if name == xattrWant { |
| found = true |
| break |
| } |
| } |
| |
| if !found { |
| t.Errorf("Flistxattr did not return previously set attribute '%s'", xattrName) |
| } |
| |
| // find size |
| size, err = unix.Fgetxattr(fd, xattrName, nil) |
| if err != nil { |
| t.Fatalf("Fgetxattr: %v", err) |
| } |
| |
| if size <= 0 { |
| t.Fatalf("Fgetxattr returned an empty attribute") |
| } |
| |
| xattrDataGet := make([]byte, size) |
| _, err = unix.Fgetxattr(fd, xattrName, xattrDataGet) |
| if err != nil { |
| t.Fatalf("Fgetxattr: %v", err) |
| } |
| |
| got := string([]byte(xattrDataGet)) |
| if got != string(xattrDataSet) { |
| t.Errorf("Getxattr: expected attribute value %s, got %s", xattrDataSet, got) |
| } |
| |
| err = unix.Fremovexattr(fd, xattrName) |
| if err != nil { |
| t.Fatalf("Fremovexattr: %v", err) |
| } |
| |
| //confirm xattr removed |
| // find size |
| size, err = unix.Flistxattr(fd, nil) |
| if err != nil { |
| t.Fatalf("Flistxattr: %v", err) |
| } |
| if size != 0 { |
| buf := make([]byte, size) |
| read, err = unix.Flistxattr(fd, buf) |
| if err != nil { |
| t.Fatalf("Flistxattr: %v", err) |
| } |
| |
| xattrs = stringsFromByteSlice(buf[:read]) |
| |
| found = false |
| for _, name := range xattrs { |
| if name == xattrWant { |
| found = true |
| break |
| } |
| if found { |
| t.Errorf("Fremovexattr failed to remove attribute '%s'", xattrName) |
| } |
| } |
| } |
| } |