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Diffstat (limited to 'internal/contentenc')
-rw-r--r--internal/contentenc/content.go14
1 files changed, 8 insertions, 6 deletions
diff --git a/internal/contentenc/content.go b/internal/contentenc/content.go
index 76b486d..57ad489 100644
--- a/internal/contentenc/content.go
+++ b/internal/contentenc/content.go
@@ -71,15 +71,17 @@ type ContentEnc struct {
// New returns an initialized ContentEnc instance.
func New(cc *cryptocore.CryptoCore, plainBS uint64, forceDecode bool) *ContentEnc {
+ if fuse.MAX_KERNEL_WRITE%plainBS != 0 {
+ log.Panicf("unaligned MAX_KERNEL_WRITE=%d", fuse.MAX_KERNEL_WRITE)
+ }
cipherBS := plainBS + uint64(cc.IVLen) + cryptocore.AuthTagLen
// Take IV and GHASH overhead into account.
cReqSize := int(fuse.MAX_KERNEL_WRITE / plainBS * cipherBS)
- // An unaligned read (could happen with O_DIRECT?) may touch one
- // additional ciphertext block. Reserve space for it.
+ // Unaligned reads (happens during fsck, could also happen with O_DIRECT?)
+ // touch one additional ciphertext and plaintext block. Reserve space for the
+ // extra block.
cReqSize += int(cipherBS)
- if fuse.MAX_KERNEL_WRITE%plainBS != 0 {
- log.Panicf("unaligned MAX_KERNEL_WRITE=%d", fuse.MAX_KERNEL_WRITE)
- }
+ pReqSize := fuse.MAX_KERNEL_WRITE + int(plainBS)
c := &ContentEnc{
cryptoCore: cc,
plainBS: plainBS,
@@ -90,7 +92,7 @@ func New(cc *cryptocore.CryptoCore, plainBS uint64, forceDecode bool) *ContentEn
cBlockPool: newBPool(int(cipherBS)),
CReqPool: newBPool(cReqSize),
pBlockPool: newBPool(int(plainBS)),
- PReqPool: newBPool(fuse.MAX_KERNEL_WRITE),
+ PReqPool: newBPool(pReqSize),
}
return c
}