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-rw-r--r--tests/matrix/fallocate_test.go158
-rw-r--r--tests/matrix/matrix_test.go148
2 files changed, 158 insertions, 148 deletions
diff --git a/tests/matrix/fallocate_test.go b/tests/matrix/fallocate_test.go
new file mode 100644
index 0000000..6928b4a
--- /dev/null
+++ b/tests/matrix/fallocate_test.go
@@ -0,0 +1,158 @@
+package matrix
+
+import (
+ "os"
+ "runtime"
+ "syscall"
+ "testing"
+
+ "github.com/rfjakob/gocryptfs/internal/syscallcompat"
+ "github.com/rfjakob/gocryptfs/tests/test_helpers"
+)
+
+const (
+ // From man statfs
+ TMPFS_MAGIC = 0x01021994
+ EXT4_SUPER_MAGIC = 0xef53
+)
+
+// isWellKnownFS decides if the backing filesystem is well-known.
+// The expected allocated sizes are only valid on tmpfs and ext4. btrfs
+// gives different results, but that's not an error.
+func isWellKnownFS(fn string) bool {
+ var fs syscall.Statfs_t
+ err := syscall.Statfs(fn, &fs)
+ if err != nil {
+ panic(err)
+ }
+ if fs.Type == EXT4_SUPER_MAGIC || fs.Type == TMPFS_MAGIC {
+ return true
+ }
+ return false
+}
+
+const FALLOC_DEFAULT = 0x00
+const FALLOC_FL_KEEP_SIZE = 0x01
+
+func TestFallocate(t *testing.T) {
+ if runtime.GOOS == "darwin" {
+ t.Skipf("OSX does not support fallocate")
+ }
+ fn := test_helpers.DefaultPlainDir + "/fallocate"
+ file, err := os.Create(fn)
+ if err != nil {
+ t.FailNow()
+ }
+ defer file.Close()
+ wellKnown := isWellKnownFS(test_helpers.DefaultCipherDir)
+ fd := int(file.Fd())
+ nBytes := test_helpers.Du(t, fd)
+ if nBytes != 0 {
+ t.Fatalf("Empty file has %d bytes", nBytes)
+ }
+ // Allocate 30 bytes, keep size
+ // gocryptfs || (0 blocks)
+ // ext4 | d | (1 block)
+ // ^ d = data block
+ err = syscallcompat.Fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, 30)
+ if err != nil {
+ t.Error(err)
+ }
+ var want int64
+ nBytes = test_helpers.Du(t, fd)
+ want = 4096
+ if nBytes != want {
+ t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
+ }
+ test_helpers.VerifySize(t, fn, 0)
+ // Three ciphertext blocks. The middle one should be a file hole.
+ // gocryptfs | h | h | d| (1 block)
+ // ext4 | d | h | d | (2 blocks)
+ // ^ h = file hole
+ // (Note that gocryptfs blocks are slightly bigger than the ext4 blocks,
+ // but the last one is partial)
+ err = file.Truncate(9000)
+ if err != nil {
+ t.Fatal(err)
+ }
+ nBytes = test_helpers.Du(t, fd)
+ want = 2 * 4096
+ if wellKnown && nBytes != want {
+ t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
+ }
+ if md5 := test_helpers.Md5fn(fn); md5 != "5420afa22f6423a9f59e669540656bb4" {
+ t.Errorf("Wrong md5 %s", md5)
+ }
+ // Allocate the whole file space
+ // gocryptfs | h | h | d| (1 block)
+ // ext4 | d | d | d | (3 blocks
+ err = syscallcompat.Fallocate(fd, FALLOC_DEFAULT, 0, 9000)
+ if err != nil {
+ t.Fatal(err)
+ }
+ nBytes = test_helpers.Du(t, fd)
+ want = 3 * 4096
+ if nBytes != want {
+ t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
+ }
+ // Neither apparent size nor content should have changed
+ test_helpers.VerifySize(t, fn, 9000)
+ if md5 := test_helpers.Md5fn(fn); md5 != "5420afa22f6423a9f59e669540656bb4" {
+ t.Errorf("Wrong md5 %s", md5)
+ }
+
+ // Partial block on the end. The first ext4 block is dirtied by the header.
+ // gocryptfs | h | h | d| (1 block)
+ // ext4 | d | h | d | (2 blocks)
+ file.Truncate(0)
+ file.Truncate(9000)
+ nBytes = test_helpers.Du(t, fd)
+ want = 2 * 4096
+ if wellKnown && nBytes != want {
+ t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
+ }
+ // Allocate 10 bytes in the second block
+ // gocryptfs | h | h | d| (1 block)
+ // ext4 | d | d | d | (3 blocks)
+ syscallcompat.Fallocate(fd, FALLOC_DEFAULT, 5000, 10)
+ nBytes = test_helpers.Du(t, fd)
+ want = 3 * 4096
+ if wellKnown && nBytes != want {
+ t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
+ }
+ // Neither apparent size nor content should have changed
+ test_helpers.VerifySize(t, fn, 9000)
+ if md5 := test_helpers.Md5fn(fn); md5 != "5420afa22f6423a9f59e669540656bb4" {
+ t.Errorf("Wrong md5 %s", md5)
+ }
+ // Grow the file to 4 blocks
+ // gocryptfs | h | h | d |d| (2 blocks)
+ // ext4 | d | d | d | d | (4 blocks)
+ syscallcompat.Fallocate(fd, FALLOC_DEFAULT, 15000, 10)
+ nBytes = test_helpers.Du(t, fd)
+ want = 4 * 4096
+ if wellKnown && nBytes != want {
+ t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
+ }
+ test_helpers.VerifySize(t, fn, 15010)
+ if md5 := test_helpers.Md5fn(fn); md5 != "c4c44c7a41ab7798a79d093eb44f99fc" {
+ t.Errorf("Wrong md5 %s", md5)
+ }
+ // Shrinking a file using fallocate should have no effect
+ for _, off := range []int64{0, 10, 2000, 5000} {
+ for _, sz := range []int64{0, 1, 42, 6000} {
+ syscallcompat.Fallocate(fd, FALLOC_DEFAULT, off, sz)
+ test_helpers.VerifySize(t, fn, 15010)
+ if md5 := test_helpers.Md5fn(fn); md5 != "c4c44c7a41ab7798a79d093eb44f99fc" {
+ t.Errorf("Wrong md5 %s", md5)
+ }
+ }
+ }
+ // Cleanup
+ syscall.Unlink(fn)
+ if !wellKnown {
+ // Even though most tests have been executed still, inform the user
+ // that some were disabled
+ t.Skipf("backing fs is not ext4 or tmpfs, skipped some disk-usage checks\n")
+ }
+}
diff --git a/tests/matrix/matrix_test.go b/tests/matrix/matrix_test.go
index 9f3b13a..ad2eeae 100644
--- a/tests/matrix/matrix_test.go
+++ b/tests/matrix/matrix_test.go
@@ -26,7 +26,6 @@ import (
"golang.org/x/sys/unix"
"github.com/rfjakob/gocryptfs/internal/stupidgcm"
- "github.com/rfjakob/gocryptfs/internal/syscallcompat"
"github.com/rfjakob/gocryptfs/tests/test_helpers"
)
@@ -208,153 +207,6 @@ func TestTruncate(t *testing.T) {
}
}
-const (
- // From man statfs
- TMPFS_MAGIC = 0x01021994
- EXT4_SUPER_MAGIC = 0xef53
-)
-
-// isWellKnownFS decides if the backing filesystem is well-known.
-// The expected allocated sizes are only valid on tmpfs and ext4. btrfs
-// gives different results, but that's not an error.
-func isWellKnownFS(fn string) bool {
- var fs syscall.Statfs_t
- err := syscall.Statfs(fn, &fs)
- if err != nil {
- panic(err)
- }
- if fs.Type == EXT4_SUPER_MAGIC || fs.Type == TMPFS_MAGIC {
- return true
- }
- return false
-}
-
-const FALLOC_DEFAULT = 0x00
-const FALLOC_FL_KEEP_SIZE = 0x01
-
-func TestFallocate(t *testing.T) {
- if runtime.GOOS == "darwin" {
- t.Skipf("OSX does not support fallocate")
- }
- fn := test_helpers.DefaultPlainDir + "/fallocate"
- file, err := os.Create(fn)
- if err != nil {
- t.FailNow()
- }
- defer file.Close()
- wellKnown := isWellKnownFS(test_helpers.DefaultCipherDir)
- fd := int(file.Fd())
- nBytes := test_helpers.Du(t, fd)
- if nBytes != 0 {
- t.Fatalf("Empty file has %d bytes", nBytes)
- }
- // Allocate 30 bytes, keep size
- // gocryptfs || (0 blocks)
- // ext4 | d | (1 block)
- // ^ d = data block
- err = syscallcompat.Fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, 30)
- if err != nil {
- t.Error(err)
- }
- var want int64
- nBytes = test_helpers.Du(t, fd)
- want = 4096
- if nBytes != want {
- t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
- }
- test_helpers.VerifySize(t, fn, 0)
- // Three ciphertext blocks. The middle one should be a file hole.
- // gocryptfs | h | h | d| (1 block)
- // ext4 | d | h | d | (2 blocks)
- // ^ h = file hole
- // (Note that gocryptfs blocks are slightly bigger than the ext4 blocks,
- // but the last one is partial)
- err = file.Truncate(9000)
- if err != nil {
- t.Fatal(err)
- }
- nBytes = test_helpers.Du(t, fd)
- want = 2 * 4096
- if wellKnown && nBytes != want {
- t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
- }
- if md5 := test_helpers.Md5fn(fn); md5 != "5420afa22f6423a9f59e669540656bb4" {
- t.Errorf("Wrong md5 %s", md5)
- }
- // Allocate the whole file space
- // gocryptfs | h | h | d| (1 block)
- // ext4 | d | d | d | (3 blocks
- err = syscallcompat.Fallocate(fd, FALLOC_DEFAULT, 0, 9000)
- if err != nil {
- t.Fatal(err)
- }
- nBytes = test_helpers.Du(t, fd)
- want = 3 * 4096
- if nBytes != want {
- t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
- }
- // Neither apparent size nor content should have changed
- test_helpers.VerifySize(t, fn, 9000)
- if md5 := test_helpers.Md5fn(fn); md5 != "5420afa22f6423a9f59e669540656bb4" {
- t.Errorf("Wrong md5 %s", md5)
- }
-
- // Partial block on the end. The first ext4 block is dirtied by the header.
- // gocryptfs | h | h | d| (1 block)
- // ext4 | d | h | d | (2 blocks)
- file.Truncate(0)
- file.Truncate(9000)
- nBytes = test_helpers.Du(t, fd)
- want = 2 * 4096
- if wellKnown && nBytes != want {
- t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
- }
- // Allocate 10 bytes in the second block
- // gocryptfs | h | h | d| (1 block)
- // ext4 | d | d | d | (3 blocks)
- syscallcompat.Fallocate(fd, FALLOC_DEFAULT, 5000, 10)
- nBytes = test_helpers.Du(t, fd)
- want = 3 * 4096
- if wellKnown && nBytes != want {
- t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
- }
- // Neither apparent size nor content should have changed
- test_helpers.VerifySize(t, fn, 9000)
- if md5 := test_helpers.Md5fn(fn); md5 != "5420afa22f6423a9f59e669540656bb4" {
- t.Errorf("Wrong md5 %s", md5)
- }
- // Grow the file to 4 blocks
- // gocryptfs | h | h | d |d| (2 blocks)
- // ext4 | d | d | d | d | (4 blocks)
- syscallcompat.Fallocate(fd, FALLOC_DEFAULT, 15000, 10)
- nBytes = test_helpers.Du(t, fd)
- want = 4 * 4096
- if wellKnown && nBytes != want {
- t.Errorf("Expected %d allocated bytes, have %d", want, nBytes)
- }
- test_helpers.VerifySize(t, fn, 15010)
- if md5 := test_helpers.Md5fn(fn); md5 != "c4c44c7a41ab7798a79d093eb44f99fc" {
- t.Errorf("Wrong md5 %s", md5)
- }
- // Shrinking a file using fallocate should have no effect
- for _, off := range []int64{0, 10, 2000, 5000} {
- for _, sz := range []int64{0, 1, 42, 6000} {
- syscallcompat.Fallocate(fd, FALLOC_DEFAULT, off, sz)
- test_helpers.VerifySize(t, fn, 15010)
- if md5 := test_helpers.Md5fn(fn); md5 != "c4c44c7a41ab7798a79d093eb44f99fc" {
- t.Errorf("Wrong md5 %s", md5)
- }
- }
- }
- // Cleanup
- syscall.Unlink(fn)
- if !wellKnown {
- // Even though most tests have been executed still, inform the user
- // that some were disabled
- t.Skipf("backing fs is not ext4 or tmpfs, skipped some disk-usage checks\n")
- }
-}
-
func TestAppend(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/append"
file, err := os.Create(fn)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 17:18:11 +0000