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libgocryptfs
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fusefrontend: move openBackingDir into its own file 

This function is in all fastpaths, will get a cache, and needs
its own file.
renamed:    internal/fusefrontend/names.go -> internal/fusefrontend/openbackingdir.go
renamed:    internal/fusefrontend/names_test.go -> internal/fusefrontend/openbackingdir_test.go
This commit is contained in:
Jakob Unterwurzacher 2019-01-02 21:52:52 +01:00
parent 2b12bba274
commit 352f3147c5
3 changed files with 19 additions and 22 deletions
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19
internal/fusefrontend/fs.go
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@ -16,6 +16,7 @@ import (
"github.com/hanwen/go-fuse/fuse/nodefs"
"github.com/hanwen/go-fuse/fuse/pathfs"
"github.com/rfjakob/gocryptfs/internal/configfile"
"github.com/rfjakob/gocryptfs/internal/contentenc"
"github.com/rfjakob/gocryptfs/internal/nametransform"
"github.com/rfjakob/gocryptfs/internal/serialize_reads"
@ -661,3 +662,21 @@ func (fs *FS) reportMitigatedCorruption(item string) {
return
}
}
// isFiltered - check if plaintext "path" should be forbidden
//
// Prevents name clashes with internal files when file names are not encrypted
func (fs *FS) isFiltered(path string) bool {
if !fs.args.PlaintextNames {
return false
}
// gocryptfs.conf in the root directory is forbidden
if path == configfile.ConfDefaultName {
tlog.Info.Printf("The name /%s is reserved when -plaintextnames is used\n",
configfile.ConfDefaultName)
return true
}
// Note: gocryptfs.diriv is NOT forbidden because diriv and plaintextnames
// are exclusive
return false
}

22
internal/fusefrontend/names.go → internal/fusefrontend/openbackingdir.go
View File

@ -1,36 +1,14 @@
package fusefrontend
// This file forwards file encryption operations to cryptfs
import (
"path/filepath"
"strings"
"syscall"
"github.com/rfjakob/gocryptfs/internal/configfile"
"github.com/rfjakob/gocryptfs/internal/nametransform"
"github.com/rfjakob/gocryptfs/internal/syscallcompat"
"github.com/rfjakob/gocryptfs/internal/tlog"
)
// isFiltered - check if plaintext "path" should be forbidden
//
// Prevents name clashes with internal files when file names are not encrypted
func (fs *FS) isFiltered(path string) bool {
if !fs.args.PlaintextNames {
return false
}
// gocryptfs.conf in the root directory is forbidden
if path == configfile.ConfDefaultName {
tlog.Info.Printf("The name /%s is reserved when -plaintextnames is used\n",
configfile.ConfDefaultName)
return true
}
// Note: gocryptfs.diriv is NOT forbidden because diriv and plaintextnames
// are exclusive
return false
}
// openBackingDir opens the parent ciphertext directory of plaintext path
// "relPath" and returns the dirfd and the encrypted basename.
//

0
internal/fusefrontend/names_test.go → internal/fusefrontend/openbackingdir_test.go
View File