hardcoresushi/libgocryptfs
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v2api: fix double-lock in truncate

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This commit is contained in:
Jakob Unterwurzacher 2020-07-12 13:13:24 +02:00
parent 6196a5b5fe
commit b1d631d432
2 changed files with 2 additions and 9 deletions
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9
internal/fusefrontend/file2_allocate_truncate.go
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@ -84,15 +84,6 @@ func (f *File2) Allocate(ctx context.Context, off uint64, sz uint64, mode uint32
// truncate - called from Setattr.
func (f *File2) truncate(newSize uint64) (errno syscall.Errno) {
f.fdLock.RLock()
defer f.fdLock.RUnlock()
if f.released {
// The file descriptor has been closed concurrently.
tlog.Warn.Printf("ino%d fh%d: Truncate on released file", f.qIno.Ino, f.intFd())
return syscall.EBADF
}
f.fileTableEntry.ContentLock.Lock()
defer f.fileTableEntry.ContentLock.Unlock()
var err error
// Common case first: Truncate to zero
if newSize == 0 {

2
internal/fusefrontend/file2_setattr.go
View File

@ -8,6 +8,7 @@ import (
"github.com/hanwen/go-fuse/v2/fuse"
"github.com/rfjakob/gocryptfs/internal/syscallcompat"
"github.com/rfjakob/gocryptfs/internal/tlog"
)
func (f *File2) Setattr(ctx context.Context, in *fuse.SetAttrIn, out *fuse.AttrOut) (errno syscall.Errno) {
@ -22,6 +23,7 @@ func (f *File2) setAttr(ctx context.Context, in *fuse.SetAttrIn) (errno syscall.
f.fdLock.RLock()
defer f.fdLock.RUnlock()
if f.released {
tlog.Warn.Printf("ino%d fh%d: Truncate on released file", f.qIno.Ino, f.intFd())
return syscall.EBADF
}
f.fileTableEntry.ContentLock.Lock()