hardcoresushi/libgocryptfs
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fusefrontend: Fix computation of cipherSz in Allocate FUSE call.

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Do not use PlainSizeToCipherSize() since this adds the 18 bytes file header.

Partially fixes https://github.com/rfjakob/gocryptfs/issues/311
This commit is contained in:
Sebastian Lackner 2019-01-04 04:06:54 +01:00 committed by Jakob Unterwurzacher
parent 5c8e7feabd
commit 40d2427fd7
1 changed files with 1 additions and 1 deletions
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internal/fusefrontend/file_allocate_truncate.go
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@ -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)