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Diffstat (limited to 'pathfs_frontend/file.go')
-rw-r--r--pathfs_frontend/file.go13
1 files changed, 9 insertions, 4 deletions
diff --git a/pathfs_frontend/file.go b/pathfs_frontend/file.go
index de00a11..9c58557 100644
--- a/pathfs_frontend/file.go
+++ b/pathfs_frontend/file.go
@@ -164,7 +164,7 @@ func (f *file) Write(data []byte, off int64) (uint32, fuse.Status) {
blockData = f.cfs.EncryptBlock(blockData)
cryptfs.Debug.Printf("ino%d: Writing %d bytes to block #%d, md5=%s\n", f.ino, len(blockData), b.BlockNo, cryptfs.Debug.Md5sum(blockData))
if len(blockData) != int(f.cfs.CipherBS()) {
- cryptfs.Debug.Printf("ino%d: Writing partial block #%d (%d bytes)\n", b.BlockNo, len(blockData))
+ cryptfs.Debug.Printf("ino%d: Writing partial block #%d (%d bytes)\n", f.ino, b.BlockNo, len(blockData))
}
f.lock.Lock()
_, err := f.fd.WriteAt(blockData, int64(blockOffset))
@@ -230,8 +230,12 @@ func (f *file) Truncate(newSize uint64) fuse.Status {
cryptfs.Warn.Printf("Truncate: fstat failed: %v\n", err)
return fuse.ToStatus(err)
}
- oldSize := uint64(fi.Size())
-
+ oldSize := f.cfs.PlainSize(uint64(fi.Size()))
+ {
+ oldB := (oldSize + f.cfs.PlainBS() - 1) / f.cfs.PlainBS()
+ newB := (newSize + f.cfs.PlainBS() - 1) / f.cfs.PlainBS()
+ cryptfs.Debug.Printf("ino%d: truncate from %d to %d blocks (%d to %d bytes)\n", f.ino, oldB, newB, oldSize, newSize)
+ }
// Grow file by appending zeros
if newSize > oldSize {
remaining := newSize - oldSize
@@ -259,7 +263,7 @@ func (f *file) Truncate(newSize uint64) fuse.Status {
}
return fuse.OK
}
-
+ // else:
// Shrink file by truncating
newBlockLen := int(newSize % f.cfs.PlainBS())
// New file size is aligned to block size - just truncate
@@ -271,6 +275,7 @@ func (f *file) Truncate(newSize uint64) fuse.Status {
return fuse.ToStatus(err)
}
// New file size is not aligned - need to do RMW on the last block
+ cryptfs.Debug.Printf("Truncate: Shrink RMW\n")
var blockOffset, blockLen uint64
{
// Get the block the last byte belongs to.