hardcoresushi/libgocryptfs
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Fix append issue

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This commit is contained in:
Jakob Unterwurzacher 2015-09-08 22:34:23 +02:00
parent 1ca4fc89aa
commit b13cc9686c
1 changed files with 2 additions and 1 deletions
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3
pathfs_frontend/file.go
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@ -56,6 +56,7 @@ func (f *file) doRead(off uint64, length uint64) ([]byte, fuse.Status) {
// Read the backing ciphertext in one go
alignedOffset, alignedLength, skip := f.cfs.CiphertextRange(off, length)
cryptfs.Debug.Printf("CiphertextRange(%d, %d) -> %d, %d, %d\n", off, length, alignedOffset, alignedLength, skip)
ciphertext := make([]byte, int(alignedLength))
n, err := f.fd.ReadAt(ciphertext, int64(alignedOffset))
ciphertext = ciphertext[0:n]
@ -121,7 +122,7 @@ func (f *file) Write(data []byte, off int64) (uint32, fuse.Status) {
if b.IsPartial() {
// Read
o, _ := b.PlaintextRange()
oldData, status := f.doRead(f.cfs.PlainBS(), o)
oldData, status := f.doRead(o, f.cfs.PlainBS())
if status != fuse.OK {
cryptfs.Warn.Printf("RMW read failed: %s\n", status.String())
return written, status