mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2026-09-08 23:50:43 +02:00
Chris Lu
40b3d32fe5
The POSIX suites skirt this: pjdfstest's unlink/14.t covers only fstat and pread on an unlinked descriptor — its driver has no fchmod at all and never opens a directory. Pin the full rule in the FUSE integration suite: ftruncate, fchmod, futimes, fstat, and the f*xattr calls keep working between the removal of the last name and the final close, for a file after unlink and a directory after rmdir, with nlink 0 and the changes visible to a following fstat. Claude-Session: https://claude.ai/code/session_01GYqLENjZzbV5hgt4L8cSAK
95 lines
3.4 KiB
Go
95 lines
3.4 KiB
Go
//go:build linux
|
|
|
|
package fuse_test
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
// TestMetadataOnUnlinkedOpen covers the POSIX rule that an inode outlives its
|
|
// last name while a descriptor holds it open: metadata operations through the
|
|
// descriptor keep working between the removal and the final close, for a file
|
|
// after unlink and for a directory after rmdir.
|
|
func TestMetadataOnUnlinkedOpen(t *testing.T) {
|
|
framework := NewFuseTestFramework(t, DefaultTestConfig())
|
|
defer framework.Cleanup()
|
|
|
|
require.NoError(t, framework.Setup(DefaultTestConfig()))
|
|
|
|
t.Run("UnlinkedOpenFile", func(t *testing.T) {
|
|
testUnlinkedOpenFile(t, framework)
|
|
})
|
|
|
|
t.Run("RemovedOpenDirectory", func(t *testing.T) {
|
|
testRemovedOpenDirectory(t, framework)
|
|
})
|
|
}
|
|
|
|
func testUnlinkedOpenFile(t *testing.T, framework *FuseTestFramework) {
|
|
path := filepath.Join(framework.GetMountPoint(), "unlinked_open_file")
|
|
fd, err := unix.Open(path, unix.O_CREAT|unix.O_RDWR, 0644)
|
|
require.NoError(t, err)
|
|
defer unix.Close(fd)
|
|
_, err = unix.Write(fd, []byte("hello"))
|
|
require.NoError(t, err)
|
|
|
|
require.NoError(t, os.Remove(path))
|
|
|
|
require.NoError(t, unix.Ftruncate(fd, 2), "ftruncate on an unlinked open file")
|
|
require.NoError(t, unix.Fchmod(fd, 0600), "fchmod on an unlinked open file")
|
|
require.NoError(t, unix.Futimes(fd, []unix.Timeval{{Sec: 1234567890}, {Sec: 987654321}}),
|
|
"futimes on an unlinked open file")
|
|
|
|
var st unix.Stat_t
|
|
require.NoError(t, unix.Fstat(fd, &st), "fstat on an unlinked open file")
|
|
assert.EqualValues(t, 0, st.Nlink, "nlink after unlink")
|
|
assert.EqualValues(t, 0600, st.Mode&0777, "mode after fchmod")
|
|
assert.EqualValues(t, 2, st.Size, "size after ftruncate")
|
|
assert.EqualValues(t, 1234567890, st.Atim.Sec, "atime after futimes")
|
|
assert.EqualValues(t, 987654321, st.Mtim.Sec, "mtime after futimes")
|
|
|
|
testFdXattrRoundTrip(t, fd)
|
|
}
|
|
|
|
func testRemovedOpenDirectory(t *testing.T, framework *FuseTestFramework) {
|
|
path := filepath.Join(framework.GetMountPoint(), "removed_open_dir")
|
|
require.NoError(t, os.Mkdir(path, 0755))
|
|
fd, err := unix.Open(path, unix.O_RDONLY|unix.O_DIRECTORY, 0)
|
|
require.NoError(t, err)
|
|
defer unix.Close(fd)
|
|
|
|
require.NoError(t, os.Remove(path))
|
|
|
|
require.NoError(t, unix.Fchmod(fd, 0770), "fchmod on a removed open directory")
|
|
require.NoError(t, unix.Futimes(fd, []unix.Timeval{{Sec: 1234567890}, {Sec: 987654321}}),
|
|
"futimes on a removed open directory")
|
|
|
|
var st unix.Stat_t
|
|
require.NoError(t, unix.Fstat(fd, &st), "fstat on a removed open directory")
|
|
assert.EqualValues(t, unix.S_IFDIR, st.Mode&unix.S_IFMT, "type after rmdir")
|
|
assert.EqualValues(t, 0770, st.Mode&0777, "mode after fchmod")
|
|
assert.EqualValues(t, 0, st.Nlink, "nlink after rmdir")
|
|
assert.EqualValues(t, 987654321, st.Mtim.Sec, "mtime after futimes")
|
|
|
|
testFdXattrRoundTrip(t, fd)
|
|
}
|
|
|
|
func testFdXattrRoundTrip(t *testing.T, fd int) {
|
|
require.NoError(t, unix.Fsetxattr(fd, "user.k", []byte("v"), 0), "fsetxattr on a removed open inode")
|
|
|
|
buf := make([]byte, 8)
|
|
n, err := unix.Fgetxattr(fd, "user.k", buf)
|
|
require.NoError(t, err, "fgetxattr on a removed open inode")
|
|
assert.Equal(t, "v", string(buf[:n]))
|
|
|
|
require.NoError(t, unix.Fremovexattr(fd, "user.k"), "fremovexattr on a removed open inode")
|
|
_, err = unix.Fgetxattr(fd, "user.k", buf)
|
|
assert.ErrorIs(t, err, unix.ENODATA, "fgetxattr after fremovexattr")
|
|
}
|