go-ceph/cephfs/file_test.go

962 lines
25 KiB
Go

package cephfs
import (
"io"
"os"
"testing"
"github.com/stretchr/testify/assert"
)
func TestFileOpen(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestFileOpen.txt"
// idempotent open for read and write
t.Run("create", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
err = f1.Close()
assert.NoError(t, err)
assert.NoError(t, mount.Unlink(fname))
})
t.Run("errorMissing", func(t *testing.T) {
// try to open a file we know should not exist
f2, err := mount.Open(".nope", os.O_RDONLY, 0644)
assert.Error(t, err)
assert.Nil(t, f2)
})
t.Run("existsInMount", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
err = f1.Close()
assert.NoError(t, err)
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
sx, err := mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.EqualValues(t, 0, sx.Size)
})
t.Run("idempotentClose", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
assert.NoError(t, f1.Close())
assert.NoError(t, f1.Close()) // call close again. it should not fail
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
})
t.Run("uninitializedFileClose", func(t *testing.T) {
f := &File{}
err := f.Close()
assert.Error(t, err)
assert.Equal(t, ErrNotConnected, err)
})
t.Run("invalidFdClose", func(t *testing.T) {
f := &File{mount, 1980}
err := f.Close()
assert.Error(t, err)
})
t.Run("openInvalidMount", func(t *testing.T) {
m := &MountInfo{}
_, err := m.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.Error(t, err)
})
}
func TestFileReadWrite(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestFileReadWrite.txt"
t.Run("writeAndRead", func(t *testing.T) {
// idempotent open for read and write
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
n, err := f1.Write([]byte("yello world!"))
assert.NoError(t, err)
assert.EqualValues(t, 12, n)
err = f1.Close()
assert.NoError(t, err)
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
buf := make([]byte, 1024)
f2, err := mount.Open(fname, os.O_RDONLY, 0)
n, err = f2.Read(buf)
assert.NoError(t, err)
assert.EqualValues(t, 12, n)
assert.Equal(t, "yello world!", string(buf[:n]))
})
t.Run("openForWriteOnly", func(t *testing.T) {
buf := make([]byte, 32)
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
_, err = f1.Read(buf)
assert.Error(t, err)
})
t.Run("openForReadOnly", func(t *testing.T) {
// "touch" the file
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
assert.NoError(t, f1.Close())
f1, err = mount.Open(fname, os.O_RDONLY, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
_, err = f1.Write([]byte("yo"))
assert.Error(t, err)
})
t.Run("uninitializedFile", func(t *testing.T) {
f := &File{}
b := []byte("testme")
_, err := f.Write(b)
assert.Error(t, err)
assert.Equal(t, ErrNotConnected, err)
_, err = f.Read(b)
assert.Error(t, err)
assert.Equal(t, ErrNotConnected, err)
})
}
func TestFileReadWriteAt(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestFileReadWriteAt.txt"
t.Run("writeAtAndReadAt", func(t *testing.T) {
// idempotent open for read and write
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
n, err := f1.WriteAt([]byte("foo"), 0)
assert.NoError(t, err)
assert.EqualValues(t, 3, n)
n, err = f1.WriteAt([]byte("bar"), 6)
assert.NoError(t, err)
assert.EqualValues(t, 3, n)
// assert that negative offsets return an error
_, err = f1.WriteAt([]byte("baz"), -10)
assert.Error(t, err)
err = f1.Close()
assert.NoError(t, err)
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
buf := make([]byte, 4)
f2, err := mount.Open(fname, os.O_RDONLY, 0)
n, err = f2.ReadAt(buf, 0)
assert.NoError(t, err)
assert.EqualValues(t, 4, n)
assert.Equal(t, "foo", string(buf[:3]))
assert.EqualValues(t, 0, string(buf[3]))
n, err = f2.ReadAt(buf, 6)
assert.NoError(t, err)
assert.EqualValues(t, 3, n)
assert.Equal(t, "bar", string(buf[:3]))
// assert that negative offsets return an error
_, err = f2.ReadAt(buf, -10)
assert.Error(t, err)
})
t.Run("openForWriteOnly", func(t *testing.T) {
buf := make([]byte, 32)
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
_, err = f1.ReadAt(buf, 0)
assert.Error(t, err)
})
t.Run("openForReadOnly", func(t *testing.T) {
// "touch" the file
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
assert.NoError(t, f1.Close())
f1, err = mount.Open(fname, os.O_RDONLY, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
_, err = f1.WriteAt([]byte("yo"), 0)
assert.Error(t, err)
})
t.Run("uninitializedFile", func(t *testing.T) {
f := &File{}
b := []byte("testme")
_, err := f.WriteAt(b, 0)
assert.Error(t, err)
assert.Equal(t, ErrNotConnected, err)
_, err = f.ReadAt(b, 0)
assert.Error(t, err)
assert.Equal(t, ErrNotConnected, err)
})
}
func TestFileInterfaces(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestFileInterfaces.txt"
t.Run("ioWriter", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
var w io.Writer = f1
_, err = w.Write([]byte("foo"))
assert.NoError(t, err)
})
t.Run("ioReader", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
_, err = f1.Write([]byte("foo"))
assert.NoError(t, err)
assert.NoError(t, f1.Close())
f1, err = mount.Open(fname, os.O_RDONLY, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
var r io.Reader = f1
buf := make([]byte, 32)
_, err = r.Read(buf)
assert.NoError(t, err)
n, err := r.Read(buf)
assert.Equal(t, 0, n)
assert.Equal(t, io.EOF, err)
})
}
func TestFileSeek(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestFileSeek.txt"
t.Run("validSeek", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
o, err := f1.Seek(8, SeekSet)
assert.NoError(t, err)
assert.EqualValues(t, 8, o)
n, err := f1.Write([]byte("flimflam"))
assert.NoError(t, err)
assert.EqualValues(t, 8, n)
})
t.Run("invalidWhence", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
o, err := f1.Seek(8, 1776)
assert.Error(t, err)
assert.EqualValues(t, 0, o)
})
t.Run("invalidSeek", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
o, err := f1.Seek(-22, SeekSet)
assert.Error(t, err)
assert.EqualValues(t, 0, o)
})
t.Run("uninitializedFile", func(t *testing.T) {
f := &File{}
_, err := f.Seek(0, SeekSet)
assert.Error(t, err)
assert.Equal(t, ErrNotConnected, err)
})
}
func TestMixedReadReadAt(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestMixedReadReadAt.txt"
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
_, err = f1.Write([]byte("abc def ghi wow!"))
assert.NoError(t, err)
assert.NoError(t, f1.Close())
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
buf := make([]byte, 4)
f2, err := mount.Open(fname, os.O_RDONLY, 0)
n, err := f2.ReadAt(buf, 0)
assert.NoError(t, err)
assert.Equal(t, 4, n)
assert.Equal(t, "abc ", string(buf))
n, err = f2.Read(buf)
assert.NoError(t, err)
assert.Equal(t, 4, n)
assert.Equal(t, "abc ", string(buf))
n, err = f2.Read(buf)
assert.NoError(t, err)
assert.Equal(t, 4, n)
assert.Equal(t, "def ", string(buf))
n, err = f2.ReadAt(buf, 0)
assert.NoError(t, err)
assert.Equal(t, 4, n)
assert.Equal(t, "abc ", string(buf))
n, err = f2.ReadAt(buf, 12)
assert.NoError(t, err)
assert.Equal(t, 4, n)
assert.Equal(t, "wow!", string(buf))
n, err = f2.Read(buf)
assert.NoError(t, err)
assert.Equal(t, 4, n)
assert.Equal(t, "ghi ", string(buf))
assert.NoError(t, f1.Close())
}
func TestFchmod(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "file.txt"
var statsBefore uint32 = 0755
var statsAfter uint32 = 0700
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, statsBefore)
assert.NoError(t, err)
assert.NotNil(t, f1)
defer func() {
assert.NoError(t, f1.Close())
assert.NoError(t, mount.Unlink(fname))
}()
err = mount.SyncFs()
assert.NoError(t, err)
sx, err := mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.Equal(t, uint32(sx.Mode&0777), statsBefore)
err = f1.Fchmod(statsAfter)
assert.NoError(t, err)
sx, err = mount.Statx(fname, StatxBasicStats, 0)
assert.Equal(t, uint32(sx.Mode&0777), statsAfter)
// TODO use t.Run sub-tests where appropriate
f2 := &File{}
err = f2.Fchmod(statsAfter)
assert.Error(t, err)
}
func TestFchown(t *testing.T) {
fname := "file.txt"
// dockerfile creates bob user account
var bob uint32 = 1010
var root uint32
mount := fsConnect(t)
defer fsDisconnect(t, mount)
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
defer func() {
assert.NoError(t, f1.Close())
assert.NoError(t, mount.Unlink(fname))
}()
err = mount.SyncFs()
assert.NoError(t, err)
sx, err := mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.Equal(t, uint32(sx.Uid), root)
assert.Equal(t, uint32(sx.Gid), root)
err = f1.Fchown(bob, bob)
assert.NoError(t, err)
sx, err = mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.Equal(t, uint32(sx.Uid), bob)
assert.Equal(t, uint32(sx.Gid), bob)
// TODO use t.Run sub-tests where appropriate
f2 := &File{}
err = f2.Fchown(bob, bob)
assert.Error(t, err)
}
func TestFstatx(t *testing.T) {
fname := "test_fstatx.txt"
mount := fsConnect(t)
defer fsDisconnect(t, mount)
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0600)
assert.NoError(t, err)
assert.NotNil(t, f)
assert.NoError(t, f.Close())
defer func() { assert.NoError(t, mount.Unlink(fname)) }()
t.Run("emptyFile", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR, 0600)
assert.NoError(t, err)
assert.NotNil(t, f)
st, err := f.Fstatx(StatxBasicStats, 0)
assert.NoError(t, err)
assert.NotNil(t, f)
assert.Equal(t, uint16(0600), st.Mode&0600)
assert.Equal(t, uint64(0), st.Size)
})
t.Run("populateFile", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0600)
assert.NoError(t, err)
assert.NotNil(t, f)
defer func() { assert.NoError(t, f.Close()) }()
_, err = f.Write([]byte("See spot run.\nSee spot jump.\n"))
assert.NoError(t, err)
st, err := f.Fstatx(StatxBasicStats, 0)
assert.NoError(t, err)
assert.NotNil(t, f)
assert.Equal(t, uint16(0600), st.Mode&0600)
assert.Equal(t, uint64(29), st.Size)
})
t.Run("closedFile", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0600)
assert.NoError(t, err)
assert.NotNil(t, f)
assert.NoError(t, f.Close())
st, err := f.Fstatx(StatxBasicStats, 0)
assert.Error(t, err)
assert.Nil(t, st)
})
t.Run("invalidFile", func(t *testing.T) {
f := &File{}
_, err := f.Fstatx(StatxBasicStats, 0)
assert.Error(t, err)
})
}
func TestFallocate(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "file1.txt"
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
assert.NoError(t, err)
assert.NotNil(t, f)
defer func() {
assert.NoError(t, f.Close())
assert.NoError(t, mount.Unlink(fname))
}()
// assert that negative values will return error.
t.Run("NegativeOffsetLength", func(t *testing.T) {
err = f.Fallocate(FallocNoFlag, -1, 10)
assert.Error(t, err)
err = f.Fallocate(FallocNoFlag, 10, -1)
assert.Error(t, err)
})
// Allocate space - default case, mode == 0.
t.Run("modeIsZero", func(t *testing.T) {
// check file size.
sx, err := mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.EqualValues(t, 0, sx.Size)
// write 10 bytes at offset 0.
err = f.Fallocate(FallocNoFlag, 0, 10)
assert.NoError(t, err)
// check file size again.
sx, err = mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.EqualValues(t, 10, sx.Size)
})
// Allocate space - size increases, data remains intact.
t.Run("increaseSize", func(t *testing.T) {
fname := "file2.txt"
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
defer func() {
assert.NoError(t, f1.Close())
assert.NoError(t, mount.Unlink(fname))
}()
// write to file.
n, err := f1.Write([]byte("Ten chars!"))
assert.NoError(t, err)
assert.EqualValues(t, 10, n)
// check the file size.
sx, err := mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.EqualValues(t, 10, sx.Size)
// allocate 10 more bytes from the middle.
err = f1.Fallocate(FallocNoFlag, 5, 10)
assert.NoError(t, err)
// check the size, it should increase.
sx, err = mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.EqualValues(t, 15, sx.Size)
// Read the contents, first ten chars remain intact.
buf := make([]byte, 10)
n, err = f1.ReadAt(buf, 0)
assert.NoError(t, err)
assert.Equal(t, "Ten chars!", string(buf[:n]))
})
// Allocate space - with FALLOC_FL_KEEP_SIZE.
t.Run("allocateSpaceWithFlag", func(t *testing.T) {
fname := "file3.txt"
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
defer func() {
assert.NoError(t, f1.Close())
assert.NoError(t, mount.Unlink(fname))
}()
// Write to file.
n, err := f1.Write([]byte("tenchars!!"))
assert.NoError(t, err)
assert.EqualValues(t, 10, n)
// Allocate 10 more bytes from the middle.
err = f1.Fallocate(FallocFlKeepSize, 5, 10)
assert.NoError(t, err)
// Check the file size, it should not increase.
sx, err := mount.Statx(fname, StatxBasicStats, 0)
assert.NoError(t, err)
assert.EqualValues(t, 10, sx.Size)
})
// Deallocate space - with only FALLOC_FL_PUNCH_HOLE.
t.Run("punchHoleFlagAlone", func(t *testing.T) {
err := f.Fallocate(FallocFlPunchHole, 0, 10)
// Not supported.
assert.Error(t, err)
})
// De-allocate space - punch holes.
t.Run("punchActualHoles", func(t *testing.T) {
fname := "file4.txt"
f1, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
defer func() {
assert.NoError(t, f1.Close())
assert.NoError(t, mount.Unlink(fname))
}()
// Write some data.
n, err := f1.Write([]byte("Ten chars!"))
assert.NoError(t, err)
assert.EqualValues(t, 10, n)
// Read it back.
buf := make([]byte, 10)
n, err = f1.ReadAt(buf, 0)
assert.NoError(t, err)
assert.Equal(t, "Ten chars!", string(buf[:n]))
// Punch holes.
err = f1.Fallocate(FallocFlPunchHole|FallocFlKeepSize, 0, 5)
assert.NoError(t, err)
// Read again - first five chars.
buf = make([]byte, 5)
n, err = f1.ReadAt(buf, 0)
assert.NoError(t, err)
assert.Equal(t, "\x00\x00\x00\x00\x00", string(buf[:n]))
// Read again - last five chars.
n, err = f1.ReadAt(buf, 5)
assert.Equal(t, "hars!", string(buf[:n]))
})
t.Run("checkValidate", func(t *testing.T) {
f1 := &File{}
err := f1.Fallocate(FallocNoFlag, 0, 10)
assert.Error(t, err)
})
}
func TestFlock(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
t.Run("validate", func(t *testing.T) {
f := &File{}
err := f.Flock(LockSH, 1010)
assert.Error(t, err)
})
t.Run("validateOperation", func(t *testing.T) {
fname := "Flockfile.txt"
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
assert.NoError(t, err)
assert.NotNil(t, f)
defer func() {
assert.NoError(t, f.Close())
assert.NoError(t, mount.Unlink(fname))
}()
err = f.Flock(LockSH|LockEX, 1010)
assert.Error(t, err)
})
t.Run("basicLocking", func(t *testing.T) {
const (
anna = 42
bob = 43
chris = 44
)
fname1 := "Flockfile1.txt"
f1, err := mount.Open(fname1, os.O_RDWR|os.O_CREATE, 0644)
assert.NoError(t, err)
assert.NotNil(t, f1)
defer func() {
assert.NoError(t, f1.Close())
assert.NoError(t, mount.Unlink(fname1))
}()
// Lock exclusively twice.
t.Run("exclusiveTwiceBlock", func(t *testing.T) {
err := f1.Flock(LockEX, anna)
assert.NoError(t, err)
defer func() {
assert.NoError(t, f1.Flock(LockUN, anna))
}()
err = f1.Flock(LockEX|LockNB, bob)
assert.Error(t, err)
})
t.Run("exclusiveTwiceNonBlock", func(t *testing.T) {
err := f1.Flock(LockEX|LockNB, anna)
assert.NoError(t, err)
defer func() {
assert.NoError(t, f1.Flock(LockUN, anna))
}()
err = f1.Flock(LockEX|LockNB, bob)
assert.Error(t, err)
})
// Lock shared.
t.Run("sharedLock", func(t *testing.T) {
err := f1.Flock(LockSH, anna)
assert.NoError(t, err)
err = f1.Flock(LockSH, bob)
assert.NoError(t, err)
defer func() {
assert.NoError(t, f1.Flock(LockUN, anna))
assert.NoError(t, f1.Flock(LockUN, bob))
}()
// Now try to take exclusive lock.
err = f1.Flock(LockEX|LockNB, chris)
assert.Error(t, err)
})
// Lock shared with upgrade to exclusive.
t.Run("sharedLockUpExclusive", func(t *testing.T) {
err := f1.Flock(LockSH, bob)
assert.NoError(t, err)
defer func() {
assert.NoError(t, f1.Flock(LockUN, bob))
}()
err = f1.Flock(LockEX, bob)
assert.NoError(t, err)
})
// Lock exclusive with downgrade to shared.
t.Run("exclusiveLockDownShared", func(t *testing.T) {
err := f1.Flock(LockEX, bob)
assert.NoError(t, err)
defer func() {
assert.NoError(t, f1.Flock(LockUN, bob))
}()
err = f1.Flock(LockSH, bob)
assert.NoError(t, err)
})
})
}
func TestFsync(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "test_fsync.txt"
defer mount.Unlink(fname)
// unfortunately there's not much to assert around the the behavior of
// fsync in these simple tests so we sort-of have to trust ceph on this :-)
t.Run("simpleFsync", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
defer func() { assert.NoError(t, f.Close()) }()
assert.NoError(t, err)
_, err = f.Write([]byte("batman"))
assert.NoError(t, err)
err = f.Fsync(SyncAll)
assert.NoError(t, err)
})
t.Run("DataOnly", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
defer func() { assert.NoError(t, f.Close()) }()
assert.NoError(t, err)
_, err = f.Write([]byte("superman"))
assert.NoError(t, err)
err = f.Fsync(SyncDataOnly)
assert.NoError(t, err)
})
t.Run("invalid", func(t *testing.T) {
f := &File{}
err := f.Fsync(SyncAll)
assert.Error(t, err)
})
}
func TestSync(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "test_sync.txt"
defer mount.Unlink(fname)
// see fsync
t.Run("simple", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE, 0644)
defer func() { assert.NoError(t, f.Close()) }()
assert.NoError(t, err)
_, err = f.Write([]byte("question"))
assert.NoError(t, err)
err = f.Sync()
assert.NoError(t, err)
})
t.Run("invalid", func(t *testing.T) {
f := &File{}
err := f.Sync()
assert.Error(t, err)
})
}
func TestFilePreadvPwritev(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestFilePreadvPwritev.txt"
defer mount.Unlink(fname)
t.Run("simple", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f.Close()) }()
b1 := []byte("foobarbaz")
b2 := []byte("alphabeta")
b3 := []byte("superawseomefuntime")
n, err := f.Pwritev([][]byte{b1, b2, b3}, 0)
assert.NoError(t, err)
assert.Equal(t, 37, n)
o := [][]byte{
make([]byte, 3),
make([]byte, 3),
make([]byte, 3),
make([]byte, 3),
}
n, err = f.Preadv(o, 0)
assert.NoError(t, err)
assert.Equal(t, 12, n)
assert.Equal(t, "foo", string(o[0]))
assert.Equal(t, "bar", string(o[1]))
assert.Equal(t, "baz", string(o[2]))
assert.Equal(t, "alp", string(o[3]))
})
t.Run("silly", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f.Close()) }()
b := []byte("foo")
x := make([][]byte, 8)
for i := range x {
x[i] = b
}
n, err := f.Pwritev(x, 0)
assert.NoError(t, err)
assert.Equal(t, 24, n)
for i := range x {
x[i] = make([]byte, 6)
}
n, err = f.Preadv(x, 1)
assert.NoError(t, err)
assert.Equal(t, 23, n)
assert.Equal(t, "oofoof", string(x[0]))
assert.Equal(t, "oofoof", string(x[1]))
assert.Equal(t, "oofoof", string(x[2]))
assert.Equal(t, "oofoo\x00", string(x[3]))
})
t.Run("readEOF", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f.Close()) }()
x := make([][]byte, 8)
for i := range x {
x[i] = make([]byte, 6)
}
n, err := f.Preadv(x, 16)
assert.Error(t, err)
assert.Equal(t, io.EOF, err)
assert.Equal(t, 0, n)
assert.Equal(t, make([]byte, 6), x[0])
})
t.Run("shortRead", func(t *testing.T) {
f, err := mount.Open(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f.Close()) }()
b := []byte("Antidisestablishmentarianism\n")
n, err := f.Pwritev([][]byte{b}, 0)
assert.NoError(t, err)
assert.Equal(t, 29, n)
// this is an explicit short read test.
// some of the buffers in the vector will be left unfilled.
x := make([][]byte, 8)
for i := range x {
x[i] = make([]byte, 6)
}
n, err = f.Preadv(x, 0)
assert.NoError(t, err)
assert.Equal(t, 29, n)
assert.Equal(t, "Antidi", string(x[0]))
assert.Equal(t, "sestab", string(x[1]))
assert.Equal(t, "lishme", string(x[2]))
assert.Equal(t, "ntaria", string(x[3]))
assert.Equal(t, "nism\n\x00", string(x[4]))
assert.Equal(t, make([]byte, 6), x[5])
assert.Equal(t, make([]byte, 6), x[6])
assert.Equal(t, make([]byte, 6), x[7])
})
t.Run("openForWriteOnly", func(t *testing.T) {
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
x := make([][]byte, 8)
for i := range x {
x[i] = make([]byte, 6)
}
_, err = f1.Preadv(x, 0)
assert.Error(t, err)
})
t.Run("openForReadOnly", func(t *testing.T) {
// "touch" the file
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
assert.NoError(t, f1.Close())
f1, err = mount.Open(fname, os.O_RDONLY, 0644)
assert.NoError(t, err)
defer func() { assert.NoError(t, f1.Close()) }()
x := make([][]byte, 8)
for i := range x {
x[i] = []byte("robble")
}
_, err = f1.Pwritev(x, 0)
assert.Error(t, err)
})
t.Run("writeInvalidFile", func(t *testing.T) {
f := &File{}
_, err := f.Pwritev([][]byte{}, 0)
assert.Error(t, err)
})
t.Run("readInvalidFile", func(t *testing.T) {
f := &File{}
_, err := f.Preadv([][]byte{}, 0)
assert.Error(t, err)
})
}
func TestFileTruncate(t *testing.T) {
mount := fsConnect(t)
defer fsDisconnect(t, mount)
fname := "TestFileTruncate.txt"
defer mount.Unlink(fname)
t.Run("invalidSize", func(t *testing.T) {
// "touch" the file
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
defer func() {
assert.NoError(t, f1.Close())
}()
err = f1.Truncate(-1)
assert.Error(t, err)
st, err := f1.Fstatx(StatxBasicStats, 0)
if assert.NoError(t, err) {
assert.EqualValues(t, 0, st.Size)
}
})
t.Run("closedFile", func(t *testing.T) {
t.Skip("test fails because of a bug(?) in ceph")
// "touch" the file
f1, err := mount.Open(fname, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
assert.NoError(t, err)
assert.NoError(t, f1.Close())
f2, err := mount.Open(fname, os.O_RDONLY, 0644)
assert.NoError(t, err)
assert.NoError(t, f2.Close())
err = f2.Truncate(1024)
assert.Error(t, err)
// I wanted to do the stat check here too but it is a pain to implement
// because we close the file.
// The original version of this test, using a read-only file, failed
// due to a bug in libcephfs (see Truncate doc comment).
})
t.Run("invalidFile", func(t *testing.T) {
f := &File{}
err := f.Truncate(0)
assert.Error(t, err)
})
}