hardcoresushi/libgocryptfs
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reverse: add gocryptfs.conf passthrough

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This commit is contained in:
Jakob Unterwurzacher 2016-09-20 19:32:28 +02:00
parent 1932248446
commit 3d59c7dd6a
1 changed files with 17 additions and 0 deletions
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17
internal/fusefrontend_reverse/rfs.go
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@ -10,6 +10,7 @@ import (
"github.com/hanwen/go-fuse/fuse/nodefs" "github.com/hanwen/go-fuse/fuse/nodefs"
"github.com/hanwen/go-fuse/fuse/pathfs" "github.com/hanwen/go-fuse/fuse/pathfs"
"github.com/rfjakob/gocryptfs/internal/configfile"
"github.com/rfjakob/gocryptfs/internal/contentenc" "github.com/rfjakob/gocryptfs/internal/contentenc"
"github.com/rfjakob/gocryptfs/internal/cryptocore" "github.com/rfjakob/gocryptfs/internal/cryptocore"
"github.com/rfjakob/gocryptfs/internal/fusefrontend" "github.com/rfjakob/gocryptfs/internal/fusefrontend"
@ -98,6 +99,7 @@ func isDirIV(relPath string) bool {
return filepath.Base(relPath) == nametransform.DirIVFilename return filepath.Base(relPath) == nametransform.DirIVFilename
} }
// GetAttr - FUSE call
func (rfs *reverseFS) GetAttr(relPath string, context *fuse.Context) (*fuse.Attr, fuse.Status) { func (rfs *reverseFS) GetAttr(relPath string, context *fuse.Context) (*fuse.Attr, fuse.Status) {
if isDirIV(relPath) { if isDirIV(relPath) {
return rfs.dirIVAttr(relPath, context) return rfs.dirIVAttr(relPath, context)
@ -120,6 +122,7 @@ func (rfs *reverseFS) GetAttr(relPath string, context *fuse.Context) (*fuse.Attr
return a, fuse.OK return a, fuse.OK
} }
// Access - FUSE call
func (rfs *reverseFS) Access(relPath string, mode uint32, context *fuse.Context) fuse.Status { func (rfs *reverseFS) Access(relPath string, mode uint32, context *fuse.Context) fuse.Status {
if isDirIV(relPath) { if isDirIV(relPath) {
return fuse.OK return fuse.OK
@ -134,7 +137,12 @@ func (rfs *reverseFS) Access(relPath string, mode uint32, context *fuse.Context)
return fuse.ToStatus(syscall.Access(absPath, mode)) return fuse.ToStatus(syscall.Access(absPath, mode))
} }
// Open - FUSE call
func (rfs *reverseFS) Open(relPath string, flags uint32, context *fuse.Context) (fuseFile nodefs.File, status fuse.Status) { func (rfs *reverseFS) Open(relPath string, flags uint32, context *fuse.Context) (fuseFile nodefs.File, status fuse.Status) {
if relPath == configfile.ConfDefaultName {
// gocryptfs.conf maps to .gocryptfs.reverse.conf in the plaintext directory
return rfs.loopbackfs.Open(configfile.ConfReverseName, flags, context)
}
if isDirIV(relPath) { if isDirIV(relPath) {
return NewDirIVFile(relDir(relPath)) return NewDirIVFile(relDir(relPath))
} }
@ -152,6 +160,7 @@ func (rfs *reverseFS) Open(relPath string, flags uint32, context *fuse.Context)
return NewFile(f, rfs.contentEnc) return NewFile(f, rfs.contentEnc)
} }
// OpenDir - FUSE readdir call
func (rfs *reverseFS) OpenDir(cipherPath string, context *fuse.Context) ([]fuse.DirEntry, fuse.Status) { func (rfs *reverseFS) OpenDir(cipherPath string, context *fuse.Context) ([]fuse.DirEntry, fuse.Status) {
relPath, err := rfs.decryptPath(cipherPath) relPath, err := rfs.decryptPath(cipherPath)
if err != nil { if err != nil {
@ -169,6 +178,14 @@ func (rfs *reverseFS) OpenDir(cipherPath string, context *fuse.Context) ([]fuse.
} }
// Add virtual gocryptfs.diriv // Add virtual gocryptfs.diriv
entries = append(entries, fuse.DirEntry{syscall.S_IFREG | 0400, nametransform.DirIVFilename}) entries = append(entries, fuse.DirEntry{syscall.S_IFREG | 0400, nametransform.DirIVFilename})
// Add gocryptfs.conf in the root directory,
// maps to .gocryptfs.reverse.conf in the plaintext directory.
if cipherPath == "" {
_, err = os.Stat(filepath.Join(rfs.args.Cipherdir, configfile.ConfReverseName))
if err == nil {
entries = append(entries, fuse.DirEntry{syscall.S_IFREG | 0400, configfile.ConfDefaultName})
}
}
return entries, fuse.OK return entries, fuse.OK
} }