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authorJakob Unterwurzacher2021-08-18 15:47:17 +0200
committerJakob Unterwurzacher2021-08-18 15:48:01 +0200
commit64793fedf4ac8eebe05c57af75877944c60f03a4 (patch)
tree02f3d4840dabd2c1e49e3356293507edd898aa83
parentdc52e3215147e3f805be64705ee9e07a2cc453ee (diff)
Fix issues found by ineffassign
gocryptfs$ ineffassign ./... /home/jakob/go/src/github.com/rfjakob/gocryptfs/internal/configfile/config_file.go:243:2: ineffectual assignment to scryptHash /home/jakob/go/src/github.com/rfjakob/gocryptfs/internal/configfile/config_file.go:272:2: ineffectual assignment to scryptHash /home/jakob/go/src/github.com/rfjakob/gocryptfs/internal/fusefrontend/file.go:285:3: ineffectual assignment to fileID /home/jakob/go/src/github.com/rfjakob/gocryptfs/internal/fusefrontend/node.go:367:3: ineffectual assignment to err /home/jakob/go/src/github.com/rfjakob/gocryptfs/internal/fusefrontend/node_open_create.go:68:2: ineffectual assignment to fd /home/jakob/go/src/github.com/rfjakob/gocryptfs/mount.go:308:2: ineffectual assignment to masterkey /home/jakob/go/src/github.com/rfjakob/gocryptfs/gocryptfs-xray/xray_main.go:156:13: ineffectual assignment to err /home/jakob/go/src/github.com/rfjakob/gocryptfs/internal/fusefrontend/prepare_syscall_test.go:65:16: ineffectual assignment to errno /home/jakob/go/src/github.com/rfjakob/gocryptfs/internal/syscallcompat/open_nofollow_test.go:34:2: ineffectual assignment to fd /home/jakob/go/src/github.com/rfjakob/gocryptfs/tests/defaults/acl_test.go:111:6: ineffectual assignment to err /home/jakob/go/src/github.com/rfjakob/gocryptfs/tests/defaults/acl_test.go:181:2: ineffectual assignment to sz /home/jakob/go/src/github.com/rfjakob/gocryptfs/tests/defaults/acl_test.go:198:2: ineffectual assignment to sz /home/jakob/go/src/github.com/rfjakob/gocryptfs/tests/defaults/main_test.go:365:8: ineffectual assignment to err /home/jakob/go/src/github.com/rfjakob/gocryptfs/tests/xattr/xattr_fd_test.go:30:6: ineffectual assignment to err /home/jakob/go/src/github.com/rfjakob/gocryptfs/tests/xattr/xattr_fd_test.go:66:6: ineffectual assignment to err
-rw-r--r--gocryptfs-xray/xray_main.go11
-rw-r--r--internal/fusefrontend/file.go11
-rw-r--r--internal/fusefrontend/node.go10
-rw-r--r--internal/fusefrontend/prepare_syscall_test.go4
-rw-r--r--internal/syscallcompat/open_nofollow_test.go1
-rw-r--r--tests/defaults/acl_test.go7
-rw-r--r--tests/defaults/main_test.go3
-rw-r--r--tests/xattr/xattr_fd_test.go8
8 files changed, 37 insertions, 18 deletions
diff --git a/gocryptfs-xray/xray_main.go b/gocryptfs-xray/xray_main.go
index b99268b..e68e463 100644
--- a/gocryptfs-xray/xray_main.go
+++ b/gocryptfs-xray/xray_main.go
@@ -154,10 +154,19 @@ func dumpMasterKey(fn string, fido2Path string) {
pw = readpassword.Once(nil, nil, "")
}
masterkey, err := cf.DecryptMasterKey(pw)
- fmt.Println(hex.EncodeToString(masterkey))
+ // Purge password from memory
for i := range pw {
pw[i] = 0
}
+ if err != nil {
+ tlog.Fatal.Println(err)
+ os.Exit(exitcodes.LoadConf)
+ }
+ fmt.Println(hex.EncodeToString(masterkey))
+ // Purge masterkey from memory
+ for i := range masterkey {
+ masterkey[i] = 0
+ }
}
func inspectCiphertext(fd *os.File, aessiv bool) {
diff --git a/internal/fusefrontend/file.go b/internal/fusefrontend/file.go
index 716a0db..ef043ae 100644
--- a/internal/fusefrontend/file.go
+++ b/internal/fusefrontend/file.go
@@ -277,16 +277,13 @@ func (f *File) Read(ctx context.Context, buf []byte, off int64) (resultData fuse
// Empty writes do nothing and are allowed.
func (f *File) doWrite(data []byte, off int64) (uint32, syscall.Errno) {
fileWasEmpty := false
- // Get the file ID, create a new one if it does not exist yet.
- var fileID []byte
// The caller has exclusively locked ContentLock, which blocks all other
// readers and writers. No need to take IDLock.
- if f.fileTableEntry.ID != nil {
- fileID = f.fileTableEntry.ID
- } else {
- // If the file ID is not cached, read it from disk
+ //
+ // If the file ID is not cached, read it from disk
+ if f.fileTableEntry.ID == nil {
var err error
- fileID, err = f.readFileID()
+ fileID, err := f.readFileID()
// Write a new file header if the file is empty
if err == io.EOF {
fileID, err = f.createHeader()
diff --git a/internal/fusefrontend/node.go b/internal/fusefrontend/node.go
index 8a3cfa2..7280624 100644
--- a/internal/fusefrontend/node.go
+++ b/internal/fusefrontend/node.go
@@ -354,23 +354,25 @@ func (n *Node) Symlink(ctx context.Context, target, name string, out *fuse.Entry
if !rn.args.PlaintextNames && nametransform.IsLongContent(cName) {
err = rn.nameTransform.WriteLongNameAt(dirfd, cName, name)
if err != nil {
- errno = fs.ToErrno(err)
- return
+ return nil, fs.ToErrno(err)
}
// Create "gocryptfs.longfile." symlink
err = syscallcompat.SymlinkatUser(cTarget, dirfd, cName, ctx2)
if err != nil {
nametransform.DeleteLongNameAt(dirfd, cName)
+ return nil, fs.ToErrno(err)
}
} else {
// Create symlink
err = syscallcompat.SymlinkatUser(cTarget, dirfd, cName, ctx2)
+ if err != nil {
+ return nil, fs.ToErrno(err)
+ }
}
st, err := syscallcompat.Fstatat2(dirfd, cName, unix.AT_SYMLINK_NOFOLLOW)
if err != nil {
- errno = fs.ToErrno(err)
- return
+ return nil, fs.ToErrno(err)
}
// Report the plaintext size, not the encrypted blob size
st.Size = int64(len(target))
diff --git a/internal/fusefrontend/prepare_syscall_test.go b/internal/fusefrontend/prepare_syscall_test.go
index 28e655c..693f62a 100644
--- a/internal/fusefrontend/prepare_syscall_test.go
+++ b/internal/fusefrontend/prepare_syscall_test.go
@@ -63,8 +63,8 @@ func TestPrepareAtSyscall(t *testing.T) {
syscall.Close(dirfd)
dirfd, cName, errno = rn.prepareAtSyscall("dir1")
- if err != nil {
- t.Fatal(err)
+ if errno != 0 {
+ t.Fatal(errno)
}
if cName == "" {
t.Fatal("cName should not be empty")
diff --git a/internal/syscallcompat/open_nofollow_test.go b/internal/syscallcompat/open_nofollow_test.go
index 1eeac3a..0d3ac3d 100644
--- a/internal/syscallcompat/open_nofollow_test.go
+++ b/internal/syscallcompat/open_nofollow_test.go
@@ -33,6 +33,7 @@ func TestOpenNofollow(t *testing.T) {
os.Symlink(tmpDir+"/d1.renamed", tmpDir+"/d1")
fd, err = OpenDirNofollow(tmpDir, "d1/d2/d3")
if err == nil {
+ syscall.Close(fd)
t.Fatalf("should have failed")
}
if err != syscall.ELOOP && err != syscall.ENOTDIR {
diff --git a/tests/defaults/acl_test.go b/tests/defaults/acl_test.go
index b3826e8..f3c707e 100644
--- a/tests/defaults/acl_test.go
+++ b/tests/defaults/acl_test.go
@@ -109,6 +109,9 @@ func TestAcl543(t *testing.T) {
t.Fatal(err)
}
fi, err := os.Stat(fn1)
+ if err != nil {
+ t.Fatal(err)
+ }
if fi.Mode() != modeWant {
t.Fatalf("mode changed from %o to %o", modeWant, fi.Mode())
}
@@ -178,7 +181,7 @@ func TestXattrOverflow(t *testing.T) {
if sz != len(val) {
t.Errorf("wrong sz: want %d have %d", len(val), sz)
}
- sz, err = unix.Lgetxattr(fn, attr, make([]byte, 1))
+ _, err = unix.Lgetxattr(fn, attr, make([]byte, 1))
if err != syscall.ERANGE {
t.Error(err)
}
@@ -195,7 +198,7 @@ func TestXattrOverflow(t *testing.T) {
if sz != szWant {
t.Errorf("wrong sz: want %d have %d", szWant, sz)
}
- sz, err = unix.Llistxattr(fn, make([]byte, 1))
+ _, err = unix.Llistxattr(fn, make([]byte, 1))
if err != syscall.ERANGE {
t.Error(err)
}
diff --git a/tests/defaults/main_test.go b/tests/defaults/main_test.go
index 2513860..ddaca68 100644
--- a/tests/defaults/main_test.go
+++ b/tests/defaults/main_test.go
@@ -363,6 +363,9 @@ func TestMd5sumMaintainers(t *testing.T) {
cmd := exec.Command("md5sum", fn, fn, fn, fn)
out2, err := cmd.CombinedOutput()
+ if err != nil {
+ t.Fatal(err)
+ }
out := string(out2)
// 195191 zero bytes have this md5sum
diff --git a/tests/xattr/xattr_fd_test.go b/tests/xattr/xattr_fd_test.go
index d3f02c5..7415e54 100644
--- a/tests/xattr/xattr_fd_test.go
+++ b/tests/xattr/xattr_fd_test.go
@@ -28,7 +28,9 @@ func TestFdXattr(t *testing.T) {
defer syscall.Close(fd)
buf := make([]byte, 1000)
sz, err := unix.Flistxattr(fd, buf)
- if sz != 0 {
+ if err != nil {
+ t.Error(err)
+ } else if sz != 0 {
t.Errorf("expected zero size, got %d", sz)
}
val1 := []byte("123456789")
@@ -64,7 +66,9 @@ func TestFdXattr(t *testing.T) {
t.Error(err)
}
sz, err = unix.Flistxattr(fd, buf)
- if sz != 0 {
+ if err != nil {
+ t.Error(err)
+ } else if sz != 0 {
t.Errorf("expected zero size, got %d", sz)
}
}