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libgocryptfs
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fusefrontend: use Getdents if available 

Getdents avoids calling Lstat on each file.
This commit is contained in:
Jakob Unterwurzacher 2017-08-15 18:35:30 +02:00
parent e50a6a57e5
commit 989b880989
1 changed files with 14 additions and 5 deletions
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19
internal/fusefrontend/fs_dir.go
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@ -242,16 +242,25 @@ func (fs *FS) OpenDir(dirName string, context *fuse.Context) ([]fuse.DirEntry, f
return nil, fuse.ToStatus(err)
}
// Read ciphertext directory
cipherEntries, status := fs.FileSystem.OpenDir(cDirName, context)
if cipherEntries == nil {
return nil, status
cDirAbsPath := filepath.Join(fs.args.Cipherdir, cDirName)
var cipherEntries []fuse.DirEntry
var status fuse.Status
if syscallcompat.HaveGetdents {
// Getdents avoids calling Lstat on each file.
cipherEntries, err = syscallcompat.Getdents(cDirAbsPath)
if err != nil {
return nil, fuse.ToStatus(err)
}
} else {
cipherEntries, status = fs.FileSystem.OpenDir(cDirName, context)
if !status.Ok() {
return nil, status
}
}
// Get DirIV (stays nil if PlaintextNames is used)
var cachedIV []byte
var cDirAbsPath string
if !fs.args.PlaintextNames {
// Read the DirIV once and use it for all later name decryptions
cDirAbsPath = filepath.Join(fs.args.Cipherdir, cDirName)
cachedIV, err = nametransform.ReadDirIV(cDirAbsPath)
if err != nil {
// This can happen during normal operation when the directory has