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VFS improvements.

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This commit is contained in:
Nuno Cruces
2025-08-05 14:15:21 +01:00
parent 20a67ca669
commit 2c582a1d66
5 changed files with 35 additions and 16 deletions
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14
util/vfsutil/slice.go
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@@ -69,20 +69,26 @@ func (*SliceFile) Close() error { return nil }
func (*SliceFile) Sync(flags vfs.SyncFlag) error { return nil }
// Lock implements [vfs.File].
func (*SliceFile) Lock(lock vfs.LockLevel) error { return nil }
func (*SliceFile) Lock(lock vfs.LockLevel) error {
// notest // not concurrency safe
return sqlite3.IOERR_LOCK
}
// Unlock implements [vfs.File].
func (*SliceFile) Unlock(lock vfs.LockLevel) error { return nil }
func (*SliceFile) Unlock(lock vfs.LockLevel) error {
// notest // not concurrency safe
return sqlite3.IOERR_UNLOCK
}
// CheckReservedLock implements [vfs.File].
func (*SliceFile) CheckReservedLock() (bool, error) {
// notest // OPEN_MEMORY
// notest // not concurrency safe
return false, sqlite3.IOERR_CHECKRESERVEDLOCK
}
// SectorSize implements [vfs.File].
func (*SliceFile) SectorSize() int {
// notest // IOCAP_POWERSAFE_OVERWRITE
// notest // safe default
return 0
}

8
util/vfsutil/wrap.go
View File

@@ -22,6 +22,14 @@ func UnwrapFile[T vfs.File](f vfs.File) (_ T, _ bool) {
}
}
// WrapOpen helps wrap [vfs.VFS].
func WrapOpen(f vfs.VFS, name string, flags vfs.OpenFlag) (file vfs.File, _ vfs.OpenFlag, err error) {
if f, ok := f.(vfs.VFSFilename); name == "" && ok {
return f.OpenFilename(nil, flags)
}
return f.Open(name, flags)
}
// WrapOpenFilename helps wrap [vfs.VFSFilename].
func WrapOpenFilename(f vfs.VFS, name *vfs.Filename, flags vfs.OpenFlag) (file vfs.File, _ vfs.OpenFlag, err error) {
if f, ok := f.(vfs.VFSFilename); ok {