minio/internal/disk/directio_darwin.go at next · chef/minio

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//go:build darwin

// This file is part of MinIO Object Storage stack

// This program is free software: you can redistribute it and/or modify

// it under the terms of the GNU Affero General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

// This program is distributed in the hope that it will be useful

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU Affero General Public License for more details.

// You should have received a copy of the GNU Affero General Public License

// along with this program. If not, see <http://www.gnu.org/licenses/>.

package disk

import (

"os"

"github.com/ncw/directio"

"golang.org/x/sys/unix"

)

// ODirectPlatform indicates if the platform supports O_DIRECT

const ODirectPlatform = true

// OpenFileDirectIO - bypass kernel cache.

func OpenFileDirectIO(filePath string, flag int, perm os.FileMode) (*os.File, error) {

return directio.OpenFile(filePath, flag, perm)

}

// DisableDirectIO - disables directio mode.

func DisableDirectIO(f *os.File) error {

fd := f.Fd()

_, err := unix.FcntlInt(fd, unix.F_NOCACHE, 0)

return err

}

// AlignedBlock - pass through to directio implementation.

func AlignedBlock(blockSize int) []byte {

return directio.AlignedBlock(blockSize)

}