diff options
Diffstat (limited to 'internal/fusefrontend_reverse/root_node.go')
| -rw-r--r-- | internal/fusefrontend_reverse/root_node.go | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/internal/fusefrontend_reverse/root_node.go b/internal/fusefrontend_reverse/root_node.go index 726380f..4297ecf 100644 --- a/internal/fusefrontend_reverse/root_node.go +++ b/internal/fusefrontend_reverse/root_node.go @@ -1,10 +1,19 @@ package fusefrontend_reverse import ( + "log" + "strings" + "syscall" + + "golang.org/x/sys/unix" + + "github.com/hanwen/go-fuse/v2/fs" + "github.com/rfjakob/gocryptfs/internal/contentenc" "github.com/rfjakob/gocryptfs/internal/fusefrontend" "github.com/rfjakob/gocryptfs/internal/inomap" "github.com/rfjakob/gocryptfs/internal/nametransform" + "github.com/rfjakob/gocryptfs/internal/syscallcompat" "github.com/sabhiram/go-gitignore" ) @@ -37,3 +46,35 @@ func NewRootNode(args fusefrontend.Args, c *contentenc.ContentEnc, n nametransfo excluder: prepareExcluder(args), } } + +// You can pass either gocryptfs.longname.XYZ.name or gocryptfs.longname.XYZ. +func (rn *RootNode) findLongnameParent(fd int, diriv []byte, longname string) (pName string, cFullName string, errno syscall.Errno) { + if strings.HasSuffix(longname, nametransform.LongNameSuffix) { + longname = nametransform.RemoveLongNameSuffix(longname) + } + entries, err := syscallcompat.Getdents(fd) + if err != nil { + errno = fs.ToErrno(err) + return + } + for _, entry := range entries { + if len(entry.Name) <= shortNameMax { + continue + } + cFullName = rn.nameTransform.EncryptName(entry.Name, diriv) + if len(cFullName) <= unix.NAME_MAX { + // Entry should have been skipped by the "continue" above + log.Panic("logic error or wrong shortNameMax constant?") + } + hName := rn.nameTransform.HashLongName(cFullName) + if longname == hName { + pName = entry.Name + break + } + } + if pName == "" { + errno = syscall.ENOENT + return + } + return +} |