open-consul/vendor/github.com/shirou/gopsutil/disk/disk_freebsd.go

197 lines
4.5 KiB
Go

// +build freebsd
package disk
import (
"bytes"
"context"
"encoding/binary"
"path"
"strconv"
"unsafe"
"golang.org/x/sys/unix"
"github.com/shirou/gopsutil/internal/common"
)
func Partitions(all bool) ([]PartitionStat, error) {
return PartitionsWithContext(context.Background(), all)
}
func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, error) {
var ret []PartitionStat
// get length
count, err := unix.Getfsstat(nil, MNT_WAIT)
if err != nil {
return ret, err
}
fs := make([]Statfs, count)
if _, err = Getfsstat(fs, MNT_WAIT); err != nil {
return ret, err
}
for _, stat := range fs {
opts := "rw"
if stat.Flags&MNT_RDONLY != 0 {
opts = "ro"
}
if stat.Flags&MNT_SYNCHRONOUS != 0 {
opts += ",sync"
}
if stat.Flags&MNT_NOEXEC != 0 {
opts += ",noexec"
}
if stat.Flags&MNT_NOSUID != 0 {
opts += ",nosuid"
}
if stat.Flags&MNT_UNION != 0 {
opts += ",union"
}
if stat.Flags&MNT_ASYNC != 0 {
opts += ",async"
}
if stat.Flags&MNT_SUIDDIR != 0 {
opts += ",suiddir"
}
if stat.Flags&MNT_SOFTDEP != 0 {
opts += ",softdep"
}
if stat.Flags&MNT_NOSYMFOLLOW != 0 {
opts += ",nosymfollow"
}
if stat.Flags&MNT_GJOURNAL != 0 {
opts += ",gjounalc"
}
if stat.Flags&MNT_MULTILABEL != 0 {
opts += ",multilabel"
}
if stat.Flags&MNT_ACLS != 0 {
opts += ",acls"
}
if stat.Flags&MNT_NOATIME != 0 {
opts += ",noattime"
}
if stat.Flags&MNT_NOCLUSTERR != 0 {
opts += ",nocluster"
}
if stat.Flags&MNT_NOCLUSTERW != 0 {
opts += ",noclusterw"
}
if stat.Flags&MNT_NFS4ACLS != 0 {
opts += ",nfs4acls"
}
d := PartitionStat{
Device: common.IntToString(stat.Mntfromname[:]),
Mountpoint: common.IntToString(stat.Mntonname[:]),
Fstype: common.IntToString(stat.Fstypename[:]),
Opts: opts,
}
if all == false {
if !path.IsAbs(d.Device) || !common.PathExists(d.Device) {
continue
}
}
ret = append(ret, d)
}
return ret, nil
}
func IOCounters(names ...string) (map[string]IOCountersStat, error) {
return IOCountersWithContext(context.Background(), names...)
}
func IOCountersWithContext(ctx context.Context, names ...string) (map[string]IOCountersStat, error) {
// statinfo->devinfo->devstat
// /usr/include/devinfo.h
ret := make(map[string]IOCountersStat)
r, err := unix.Sysctl("kern.devstat.all")
if err != nil {
return nil, err
}
buf := []byte(r)
length := len(buf)
count := int(uint64(length) / uint64(sizeOfDevstat))
buf = buf[8:] // devstat.all has version in the head.
// parse buf to Devstat
for i := 0; i < count; i++ {
b := buf[i*sizeOfDevstat : i*sizeOfDevstat+sizeOfDevstat]
d, err := parseDevstat(b)
if err != nil {
continue
}
un := strconv.Itoa(int(d.Unit_number))
name := common.IntToString(d.Device_name[:]) + un
if len(names) > 0 && !common.StringsHas(names, name) {
continue
}
ds := IOCountersStat{
ReadCount: d.Operations[DEVSTAT_READ],
WriteCount: d.Operations[DEVSTAT_WRITE],
ReadBytes: d.Bytes[DEVSTAT_READ],
WriteBytes: d.Bytes[DEVSTAT_WRITE],
ReadTime: uint64(d.Duration[DEVSTAT_READ].Compute() * 1000),
WriteTime: uint64(d.Duration[DEVSTAT_WRITE].Compute() * 1000),
IoTime: uint64(d.Busy_time.Compute() * 1000),
Name: name,
}
ret[name] = ds
}
return ret, nil
}
func (b Bintime) Compute() float64 {
BINTIME_SCALE := 5.42101086242752217003726400434970855712890625e-20
return float64(b.Sec) + float64(b.Frac)*BINTIME_SCALE
}
// BT2LD(time) ((long double)(time).sec + (time).frac * BINTIME_SCALE)
// Getfsstat is borrowed from pkg/syscall/syscall_freebsd.go
// change Statfs_t to Statfs in order to get more information
func Getfsstat(buf []Statfs, flags int) (n int, err error) {
return GetfsstatWithContext(context.Background(), buf, flags)
}
func GetfsstatWithContext(ctx context.Context, buf []Statfs, flags int) (n int, err error) {
var _p0 unsafe.Pointer
var bufsize uintptr
if len(buf) > 0 {
_p0 = unsafe.Pointer(&buf[0])
bufsize = unsafe.Sizeof(Statfs{}) * uintptr(len(buf))
}
r0, _, e1 := unix.Syscall(unix.SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
n = int(r0)
if e1 != 0 {
err = e1
}
return
}
func parseDevstat(buf []byte) (Devstat, error) {
var ds Devstat
br := bytes.NewReader(buf)
// err := binary.Read(br, binary.LittleEndian, &ds)
err := common.Read(br, binary.LittleEndian, &ds)
if err != nil {
return ds, err
}
return ds, nil
}
func getFsType(stat unix.Statfs_t) string {
return common.IntToString(stat.Fstypename[:])
}