fsck: add initial implementation

Most corruption cases except xattr should be covered.
With test filesystem.

The output is still pretty ugly. xattr support will
be added in the next commits.

15 files changed, 55 insertions, 0 deletions

diff --git a/tests/fsck/broken_fs_v1.4/GUvJFSfy7S1AXUdy4pDRLw b/tests/fsck/broken_fs_v1.4/GUvJFSfy7S1AXUdy4pDRLw
new file mode 120000
index 0000000..7bbd005
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/GUvJFSfy7S1AXUdy4pDRLw
@@ -0,0 +1 @@
+RFPnVN8r1HjIrFVJ8PffC7ObzAIeBx3DQh8FbgvmbT8Ho8mU
\ No newline at end of file
diff --git a/tests/fsck/broken_fs_v1.4/K2m0E6qzIfoLkVZJanoUiQ/mWEr9JLch2FW40qhbnPgpg b/tests/fsck/broken_fs_v1.4/K2m0E6qzIfoLkVZJanoUiQ/mWEr9JLch2FW40qhbnPgpg
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/K2m0E6qzIfoLkVZJanoUiQ/mWEr9JLch2FW40qhbnPgpg
diff --git a/tests/fsck/broken_fs_v1.4/OtrNpznB8aMTKPi6bopM2g b/tests/fsck/broken_fs_v1.4/OtrNpznB8aMTKPi6bopM2g
new file mode 100644
index 0000000..dab7c69
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/OtrNpznB8aMTKPi6bopM2g
diff --git a/tests/fsck/broken_fs_v1.4/PnkpLqHimGudw4C3jFY-Yw/_y58usbKXq_YRPMKfC3TNw b/tests/fsck/broken_fs_v1.4/PnkpLqHimGudw4C3jFY-Yw/_y58usbKXq_YRPMKfC3TNw
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/PnkpLqHimGudw4C3jFY-Yw/_y58usbKXq_YRPMKfC3TNw
diff --git a/tests/fsck/broken_fs_v1.4/PnkpLqHimGudw4C3jFY-Yw/gocryptfs.diriv b/tests/fsck/broken_fs_v1.4/PnkpLqHimGudw4C3jFY-Yw/gocryptfs.diriv
new file mode 100644
index 0000000..178763a
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/PnkpLqHimGudw4C3jFY-Yw/gocryptfs.diriv
@@ -0,0 +1,2 @@
+f—`Êá
+{g*@w¹6£
\ No newline at end of file
diff --git a/tests/fsck/broken_fs_v1.4/gocryptfs.conf b/tests/fsck/broken_fs_v1.4/gocryptfs.conf
new file mode 100644
index 0000000..cedf571
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/gocryptfs.conf
@@ -0,0 +1,20 @@
+{
+	"Creator": "gocryptfs v1.4.4-13-ga4f3a7d-dirty",
+	"EncryptedKey": "yfnIx9uKv2ZX80KXOlfb4fWws3RNqvcjsx/Ajr0x4pRfg8NLqhWRpEUWGk8NSdVFXKWVDgdhSoYkbfVnFXl07g==",
+	"ScryptObject": {
+		"Salt": "R78m123zJxxO6uU1bg6/0azppry1FoGdH1/Op1xFq+4=",
+		"N": 65536,
+		"R": 8,
+		"P": 1,
+		"KeyLen": 32
+	},
+	"Version": 2,
+	"FeatureFlags": [
+		"GCMIV128",
+		"HKDF",
+		"DirIV",
+		"EMENames",
+		"LongNames",
+		"Raw64"
+	]
+}
diff --git a/tests/fsck/broken_fs_v1.4/gocryptfs.diriv b/tests/fsck/broken_fs_v1.4/gocryptfs.diriv
new file mode 100644
index 0000000..d7bbcda
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/gocryptfs.diriv
@@ -0,0 +1,2 @@
+å8]ÃjM
+âPg¡çDóç
\ No newline at end of file
diff --git a/tests/fsck/broken_fs_v1.4/invalid_file_name.3 b/tests/fsck/broken_fs_v1.4/invalid_file_name.3
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/invalid_file_name.3
diff --git a/tests/fsck/broken_fs_v1.4/invalid_file_name_2 b/tests/fsck/broken_fs_v1.4/invalid_file_name_2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/invalid_file_name_2
diff --git a/tests/fsck/broken_fs_v1.4/invalid_file_name____1 b/tests/fsck/broken_fs_v1.4/invalid_file_name____1
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/invalid_file_name____1
diff --git a/tests/fsck/broken_fs_v1.4/qOA8a4yuvgbMFpz7277R8A b/tests/fsck/broken_fs_v1.4/qOA8a4yuvgbMFpz7277R8A
new file mode 100644
index 0000000..8621a03
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/qOA8a4yuvgbMFpz7277R8A
@@ -0,0 +1 @@
+XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
diff --git a/tests/fsck/broken_fs_v1.4/s-P7PcQDUcVkoeMDnC3EYA b/tests/fsck/broken_fs_v1.4/s-P7PcQDUcVkoeMDnC3EYA
new file mode 120000
index 0000000..158f38a
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/s-P7PcQDUcVkoeMDnC3EYA
@@ -0,0 +1 @@
+Qso5-4WJ2iAxF674mUarvuNbIMTLSJLqfEh3Chq3I_Rm2sY2
\ No newline at end of file
diff --git a/tests/fsck/broken_fs_v1.4/vDKs8a7UtM3PmEKk9wlPcA b/tests/fsck/broken_fs_v1.4/vDKs8a7UtM3PmEKk9wlPcA
new file mode 100644
index 0000000..1dff1a1
--- /dev/null
+++ b/tests/fsck/broken_fs_v1.4/vDKs8a7UtM3PmEKk9wlPcA
diff --git a/tests/fsck/fsck_test.go b/tests/fsck/fsck_test.go
new file mode 100644
index 0000000..7506636
--- /dev/null
+++ b/tests/fsck/fsck_test.go
@@ -0,0 +1,26 @@
+package fsck
+
+import (
+	"os/exec"
+	"strings"
+	"testing"
+
+	"github.com/rfjakob/gocryptfs/internal/exitcodes"
+	"github.com/rfjakob/gocryptfs/tests/test_helpers"
+)
+
+func TestBrokenFsV14(t *testing.T) {
+	cmd := exec.Command(test_helpers.GocryptfsBinary, "-fsck", "-extpass", "echo test", "broken_fs_v1.4")
+	outBin, err := cmd.CombinedOutput()
+	out := string(outBin)
+	t.Log(out)
+	code := test_helpers.ExtractCmdExitCode(err)
+	if code != exitcodes.FsckErrors {
+		t.Errorf("wrong exit code, have=%d want=%d", code, exitcodes.FsckErrors)
+	}
+	lines := strings.Split(out, "\n")
+	summaryLine := lines[len(lines)-2]
+	if summaryLine != "fsck: found 5 problems" {
+		t.Errorf("wrong summary line: %q", summaryLine)
+	}
+}
diff --git a/tests/fsck/run_fsck.bash b/tests/fsck/run_fsck.bash
new file mode 100755
index 0000000..9637381
--- /dev/null
+++ b/tests/fsck/run_fsck.bash
@@ -0,0 +1,2 @@
+#!/bin/bash
+exec ../../gocryptfs -fsck -extpass "echo test" broken_fs_v1.4