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authorSebastian Lackner2019-01-04 04:06:54 +0100
committerJakob Unterwurzacher2019-01-06 20:56:59 +0100
commit40d2427fd7f788262dc3bf220f789b7bd5fe781b (patch)
tree35b15848666cae515254a47ebb1ea3d06fc2606b /internal/fusefrontend/file_allocate_truncate.go
parent5c8e7feabd61a7db852728c9faee0ed913501b61 (diff)
fusefrontend: Fix computation of cipherSz in Allocate FUSE call.
Do not use PlainSizeToCipherSize() since this adds the 18 bytes file header. Partially fixes https://github.com/rfjakob/gocryptfs/issues/311
Diffstat (limited to 'internal/fusefrontend/file_allocate_truncate.go')
-rw-r--r--internal/fusefrontend/file_allocate_truncate.go2
1 files changed, 1 insertions, 1 deletions
diff --git a/internal/fusefrontend/file_allocate_truncate.go b/internal/fusefrontend/file_allocate_truncate.go
index b64e19b..b75462d 100644
--- a/internal/fusefrontend/file_allocate_truncate.go
+++ b/internal/fusefrontend/file_allocate_truncate.go
@@ -62,7 +62,7 @@ func (f *File) Allocate(off uint64, sz uint64, mode uint32) fuse.Status {
// the file.
cipherOff := firstBlock.BlockCipherOff()
cipherSz := lastBlock.BlockCipherOff() - cipherOff +
- f.contentEnc.PlainSizeToCipherSize(lastBlock.Skip+lastBlock.Length)
+ f.contentEnc.BlockOverhead() + lastBlock.Skip + lastBlock.Length
err := syscallcompat.Fallocate(f.intFd(), FALLOC_FL_KEEP_SIZE, int64(cipherOff), int64(cipherSz))
tlog.Debug.Printf("Allocate off=%d sz=%d mode=%x cipherOff=%d cipherSz=%d\n",
off, sz, mode, cipherOff, cipherSz)