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-rw-r--r--internal/fusefrontend/args.go9
-rw-r--r--internal/fusefrontend/fs.go12
-rw-r--r--internal/fusefrontend_reverse/rfs.go14
-rw-r--r--mount.go45
4 files changed, 32 insertions, 48 deletions
diff --git a/internal/fusefrontend/args.go b/internal/fusefrontend/args.go
index fc9de73..8a64e99 100644
--- a/internal/fusefrontend/args.go
+++ b/internal/fusefrontend/args.go
@@ -2,7 +2,6 @@ package fusefrontend
import (
"github.com/hanwen/go-fuse/fuse"
- "github.com/rfjakob/gocryptfs/internal/cryptocore"
)
// Args is a container for arguments that are passed from main() to fusefrontend
@@ -10,7 +9,6 @@ type Args struct {
// Cipherdir is the backing storage directory (absolute path).
// For reverse mode, Cipherdir actually contains *plaintext* files.
Cipherdir string
- CryptoBackend cryptocore.AEADTypeEnum
PlaintextNames bool
LongNames bool
// Should we chown a file after it has been created?
@@ -26,15 +24,8 @@ type Args struct {
// location. If it is false, reverse mode maps ".gocryptfs.reverse.conf"
// to "gocryptfs.conf" in the plaintext dir.
ConfigCustom bool
- // Raw64 is true when RawURLEncoding (without padding) should be used for
- // file names.
- // Corresponds to the Raw64 feature flag introduced in gocryptfs v1.2.
- Raw64 bool
// NoPrealloc disables automatic preallocation before writing
NoPrealloc bool
- // Use HKDF key derivation.
- // Corresponds to the HKDF feature flag introduced in gocryptfs v1.3.
- HKDF bool
// Try to serialize read operations, "-serialize_reads"
SerializeReads bool
// Force decode even if integrity check fails (openSSL only)
diff --git a/internal/fusefrontend/fs.go b/internal/fusefrontend/fs.go
index 8b0bb2e..b09ed83 100644
--- a/internal/fusefrontend/fs.go
+++ b/internal/fusefrontend/fs.go
@@ -17,7 +17,6 @@ import (
"github.com/hanwen/go-fuse/fuse/pathfs"
"github.com/rfjakob/gocryptfs/internal/contentenc"
- "github.com/rfjakob/gocryptfs/internal/cryptocore"
"github.com/rfjakob/gocryptfs/internal/nametransform"
"github.com/rfjakob/gocryptfs/internal/serialize_reads"
"github.com/rfjakob/gocryptfs/internal/syscallcompat"
@@ -44,20 +43,15 @@ type FS struct {
var _ pathfs.FileSystem = &FS{} // Verify that interface is implemented.
// NewFS returns a new encrypted FUSE overlay filesystem.
-func NewFS(masterkey []byte, args Args) *FS {
- cryptoCore := cryptocore.New(masterkey, args.CryptoBackend, contentenc.DefaultIVBits, args.HKDF, args.ForceDecode)
- contentEnc := contentenc.New(cryptoCore, contentenc.DefaultBS, args.ForceDecode)
- nameTransform := nametransform.New(cryptoCore.EMECipher, args.LongNames, args.Raw64)
-
+func NewFS(args Args, c *contentenc.ContentEnc, n *nametransform.NameTransform) *FS {
if args.SerializeReads {
serialize_reads.InitSerializer()
}
-
return &FS{
FileSystem: pathfs.NewLoopbackFileSystem(args.Cipherdir),
args: args,
- nameTransform: nameTransform,
- contentEnc: contentEnc,
+ nameTransform: n,
+ contentEnc: c,
}
}
diff --git a/internal/fusefrontend_reverse/rfs.go b/internal/fusefrontend_reverse/rfs.go
index 1523c18..b281c76 100644
--- a/internal/fusefrontend_reverse/rfs.go
+++ b/internal/fusefrontend_reverse/rfs.go
@@ -2,7 +2,6 @@ package fusefrontend_reverse
import (
"fmt"
- "log"
"path/filepath"
"syscall"
@@ -42,22 +41,15 @@ var _ pathfs.FileSystem = &ReverseFS{}
// NewFS returns an encrypted FUSE overlay filesystem.
// In this case (reverse mode) the backing directory is plain-text and
// ReverseFS provides an encrypted view.
-func NewFS(masterkey []byte, args fusefrontend.Args) *ReverseFS {
- if args.CryptoBackend != cryptocore.BackendAESSIV {
- log.Panic("reverse mode must use AES-SIV, everything else is insecure")
- }
+func NewFS(args fusefrontend.Args, c *contentenc.ContentEnc, n *nametransform.NameTransform) *ReverseFS {
initLongnameCache()
- cryptoCore := cryptocore.New(masterkey, args.CryptoBackend, contentenc.DefaultIVBits, args.HKDF, false)
- contentEnc := contentenc.New(cryptoCore, contentenc.DefaultBS, false)
- nameTransform := nametransform.New(cryptoCore.EMECipher, args.LongNames, args.Raw64)
-
return &ReverseFS{
// pathfs.defaultFileSystem returns ENOSYS for all operations
FileSystem: pathfs.NewDefaultFileSystem(),
loopbackfs: pathfs.NewLoopbackFileSystem(args.Cipherdir),
args: args,
- nameTransform: nameTransform,
- contentEnc: contentEnc,
+ nameTransform: n,
+ contentEnc: c,
}
}
diff --git a/mount.go b/mount.go
index 8a23a52..7b1fd4e 100644
--- a/mount.go
+++ b/mount.go
@@ -3,6 +3,7 @@ package main
import (
"encoding/json"
"fmt"
+ "log"
"log/syslog"
"net"
"os"
@@ -21,11 +22,13 @@ import (
"github.com/hanwen/go-fuse/fuse/pathfs"
"github.com/rfjakob/gocryptfs/internal/configfile"
+ "github.com/rfjakob/gocryptfs/internal/contentenc"
"github.com/rfjakob/gocryptfs/internal/cryptocore"
"github.com/rfjakob/gocryptfs/internal/ctlsock"
"github.com/rfjakob/gocryptfs/internal/exitcodes"
"github.com/rfjakob/gocryptfs/internal/fusefrontend"
"github.com/rfjakob/gocryptfs/internal/fusefrontend_reverse"
+ "github.com/rfjakob/gocryptfs/internal/nametransform"
"github.com/rfjakob/gocryptfs/internal/readpassword"
"github.com/rfjakob/gocryptfs/internal/tlog"
)
@@ -182,6 +185,13 @@ func setOpenFileLimit() {
}
}
+// ctlsockFs satisfies both the pathfs.FileSystem and the ctlsock.Interface
+// interfaces
+type ctlsockFs interface {
+ pathfs.FileSystem
+ ctlsock.Interface
+}
+
// initFuseFrontend - initialize gocryptfs/fusefrontend
// Calls os.Exit on errors
func initFuseFrontend(masterkey []byte, args *argContainer, confFile *configfile.ConfFile) *fuse.Server {
@@ -203,11 +213,8 @@ func initFuseFrontend(masterkey []byte, args *argContainer, confFile *configfile
Cipherdir: args.cipherdir,
PlaintextNames: args.plaintextnames,
LongNames: args.longnames,
- CryptoBackend: cryptoBackend,
ConfigCustom: args._configCustom,
- Raw64: args.raw64,
NoPrealloc: args.noprealloc,
- HKDF: args.hkdf,
SerializeReads: args.serialize_reads,
ForceDecode: args.forcedecode,
ForceOwner: args._forceOwner,
@@ -216,10 +223,10 @@ func initFuseFrontend(masterkey []byte, args *argContainer, confFile *configfile
if confFile != nil {
// Settings from the config file override command line args
frontendArgs.PlaintextNames = confFile.IsFeatureFlagSet(configfile.FlagPlaintextNames)
- frontendArgs.Raw64 = confFile.IsFeatureFlagSet(configfile.FlagRaw64)
- frontendArgs.HKDF = confFile.IsFeatureFlagSet(configfile.FlagHKDF)
+ args.raw64 = confFile.IsFeatureFlagSet(configfile.FlagRaw64)
+ args.hkdf = confFile.IsFeatureFlagSet(configfile.FlagHKDF)
if confFile.IsFeatureFlagSet(configfile.FlagAESSIV) {
- frontendArgs.CryptoBackend = cryptocore.BackendAESSIV
+ cryptoBackend = cryptocore.BackendAESSIV
} else if args.reverse {
tlog.Fatal.Printf("AES-SIV is required by reverse mode, but not enabled in the config file")
os.Exit(exitcodes.Usage)
@@ -232,8 +239,6 @@ func initFuseFrontend(masterkey []byte, args *argContainer, confFile *configfile
}
jsonBytes, _ := json.MarshalIndent(frontendArgs, "", "\t")
tlog.Debug.Printf("frontendArgs: %s", string(jsonBytes))
- var finalFs pathfs.FileSystem
- var ctlSockBackend ctlsock.Interface
// pathFsOpts are passed into go-fuse/pathfs
pathFsOpts := &pathfs.PathNodeFsOptions{ClientInodes: true}
if args.sharedstorage {
@@ -242,21 +247,23 @@ func initFuseFrontend(masterkey []byte, args *argContainer, confFile *configfile
// https://github.com/rfjakob/gocryptfs/issues/156
pathFsOpts.ClientInodes = false
}
+ // Init crypto backend
+ cCore := cryptocore.New(masterkey, cryptoBackend, contentenc.DefaultIVBits, args.hkdf, args.forcedecode)
+ cEnc := contentenc.New(cCore, contentenc.DefaultBS, args.forcedecode)
+ nameTransform := nametransform.New(cCore.EMECipher, frontendArgs.LongNames, args.raw64)
+ // Spawn fusefrontend
+ var fs ctlsockFs
if args.reverse {
- // The dance with the intermediate variables is because we need to
- // cast the FS into pathfs.FileSystem *and* ctlsock.Interface. This
- // avoids using interface{}.
- fs := fusefrontend_reverse.NewFS(masterkey, frontendArgs)
- finalFs = fs
- ctlSockBackend = fs
+ if cryptoBackend != cryptocore.BackendAESSIV {
+ log.Panic("reverse mode must use AES-SIV, everything else is insecure")
+ }
+ fs = fusefrontend_reverse.NewFS(frontendArgs, cEnc, nameTransform)
// Reverse mode is read-only, so we don't need a working link().
// Disable hard link tracking to avoid strange breakage on duplicate
// inode numbers ( https://github.com/rfjakob/gocryptfs/issues/149 ).
pathFsOpts.ClientInodes = false
} else {
- fs := fusefrontend.NewFS(masterkey, frontendArgs)
- finalFs = fs
- ctlSockBackend = fs
+ fs = fusefrontend.NewFS(frontendArgs, cEnc, nameTransform)
}
// fusefrontend / fusefrontend_reverse have initialized their crypto with
// derived keys (HKDF), we can purge the master key from memory.
@@ -266,9 +273,9 @@ func initFuseFrontend(masterkey []byte, args *argContainer, confFile *configfile
// We have opened the socket early so that we cannot fail here after
// asking the user for the password
if args._ctlsockFd != nil {
- go ctlsock.Serve(args._ctlsockFd, ctlSockBackend)
+ go ctlsock.Serve(args._ctlsockFd, fs)
}
- pathFs := pathfs.NewPathNodeFs(finalFs, pathFsOpts)
+ pathFs := pathfs.NewPathNodeFs(fs, pathFsOpts)
var fuseOpts *nodefs.Options
if args.sharedstorage {
// sharedstorage mode sets all cache timeouts to zero so changes to the
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 13:36:26 +0000