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VFS xDelete, xTruncate.

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Nuno Cruces
2023-01-19 01:12:09 +00:00
parent 21e0f7860a
commit 8f350f4a11
1 changed files with 34 additions and 2 deletions
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36
vfs.go
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@@ -104,7 +104,27 @@ func vfsFullPathname(ctx context.Context, mod api.Module, vfs, zName, nOut, zOut
return _OK
}
func vfsDelete(vfs, zName, syncDir uint32) uint32 { panic("vfsDelete") }
func vfsDelete(ctx context.Context, mod api.Module, vfs, zName, syncDir uint32) uint32 {
name := getString(mod.Memory(), zName, _MAX_PATHNAME)
err := os.Remove(name)
if errors.Is(err, fs.ErrNotExist) {
return _OK
}
if err != nil {
return uint32(IOERR_DELETE)
}
if syncDir != 0 {
f, err := os.Open(filepath.Dir(name))
if err == nil {
err = f.Sync()
f.Close()
}
if err != nil {
return uint32(IOERR_DELETE)
}
}
return _OK
}
func vfsAccess(ctx context.Context, mod api.Module, vfs, zName, flags, pResOut uint32) uint32 {
name := getString(mod.Memory(), zName, _MAX_PATHNAME)
@@ -243,7 +263,19 @@ func vfsWrite(ctx context.Context, mod api.Module, file, buf, iAmt uint32, iOfst
return _OK
}
func vfsTruncate(file uint32, size uint64) uint32 { panic("vfsTruncate") }
func vfsTruncate(ctx context.Context, mod api.Module, file uint32, size uint64) uint32 {
id, ok := mod.Memory().ReadUint32Le(file + ptrSize)
if !ok {
panic("sqlite: out-of-range")
}
c := ctx.Value(connContext{}).(*Conn)
err := c.files[id].Truncate(int64(size))
if err != nil {
return uint32(IOERR_TRUNCATE)
}
return _OK
}
func vfsSync(ctx context.Context, mod api.Module, file, flags uint32) uint32 {
id, ok := mod.Memory().ReadUint32Le(file + ptrSize)