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

package disk

import (
	"errors"
	"fmt"
	"syscall"
)

// GetInfo returns total and free bytes available in a directory, e.g. `/`.
func GetInfo(path string, _ bool) (info Info, err error) {
	s := syscall.Statfs_t{}
	err = syscall.Statfs(path, &s)
	if err != nil {
		return Info{}, err
	}
	reservedBlocks := uint64(s.F_bfree) - uint64(s.F_bavail)

	"runtime"
	"strconv"
	"sync"
	"syscall"
)

func init() {
	sysStat = statUnix
}

// userMap and groupMap caches UID and GID lookups for performance reasons.
// The downside is that renaming uname or gname by the OS never takes effect.
var userMap, groupMap sync.Map // map[int]string

func statUnix(fi fs.FileInfo, h *Header, doNameLookups bool) error {
	sys, ok := fi.Sys().(*syscall.Stat_t)
	if !ok {
		return nil
	}

pkg sort, func SliceStable(interface{}, func(int, int) bool)
pkg syscall (linux-arm-cgo), func TimevalToNsec(Timeval) int64
pkg syscall (linux-arm), func TimevalToNsec(Timeval) int64
pkg syscall (openbsd-386), const SYS_KILL = 122
pkg syscall (openbsd-386-cgo), const SYS_KILL = 122
pkg syscall (openbsd-amd64), const SYS_KILL = 122
pkg syscall (openbsd-amd64-cgo), const SYS_KILL = 122
pkg syscall (windows-386), const ERROR_DIR_NOT_EMPTY = 145

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

package cmd

import (
	"context"
	"os"
	"os/exec"
	"runtime"
	"syscall"

	xioutil "github.com/minio/minio/internal/ioutil"
)

// Type of service signals currently supported.
type serviceSignal int

const (
	serviceRestart       serviceSignal = iota // Restarts the server.

//
// 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 http

import (
	"context"
	"fmt"
	"net"
	"syscall"
	"time"
)

type acceptResult struct {
	conn net.Conn
	err  error
	lidx int
}

// httpListener - HTTP listener capable of handling multiple server addresses.
type httpListener struct {

//
// 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 cmd

import "syscall"

func direntInode(dirent *syscall.Dirent) uint64 {
	return uint64(dirent.Fileno)

pkg syscall (linux-386), type SysProcAttr struct, PidFD *int #51246
pkg syscall (linux-386-cgo), type SysProcAttr struct, PidFD *int #51246
pkg syscall (linux-amd64), type SysProcAttr struct, PidFD *int #51246
pkg syscall (linux-amd64-cgo), type SysProcAttr struct, PidFD *int #51246
pkg syscall (linux-arm), type SysProcAttr struct, PidFD *int #51246
pkg syscall (linux-arm-cgo), type SysProcAttr struct, PidFD *int #51246

package target

import (
	"bytes"
	"context"
	"crypto/tls"
	"encoding/json"
	"errors"
	"fmt"
	"net"
	"net/http"
	"net/url"
	"os"
	"path/filepath"
	"strings"
	"syscall"
	"time"

	"github.com/minio/minio/internal/event"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/minio/internal/logger"
	"github.com/minio/minio/internal/once"

/sys/kernel/mm/transparent_hugepage/defrag=defer+madvise
/sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_none=0

[cpu]
force_latency=1
governor=performance
energy_perf_bias=performance
min_perf_pct=100

[sysctl]
fs.xfs.xfssyncd_centisecs=72000
net.core.busy_read=50
net.core.busy_poll=50
kernel.numa_balancing=1

# Do not use swap at all
vm.swappiness=0
vm.vfs_cache_pressure=50

# Start writeback at 3% memory

		})
	if err != nil {
		return nil, err
	}
	return result, nil
}

type localDisk struct {
	index int
	path  string
}

func getMajorMinor(path string) (string, error) {
	var stat syscall.Stat_t
	if err := syscall.Stat(path, &stat); err != nil {
		return "", fmt.Errorf("unable to stat `%s`: %w", path, err)
	}

	devID := uint64(stat.Dev)
	major := (devID & 0x00000000000fff00) >> 8