mirror of
https://gitee.com/sjqzhang/go-fastdfs.git
synced 2024-12-05 04:37:52 +08:00
197 lines
4.5 KiB
Go
197 lines
4.5 KiB
Go
// +build freebsd
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package disk
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import (
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"bytes"
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"context"
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"encoding/binary"
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"path"
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"strconv"
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"unsafe"
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"golang.org/x/sys/unix"
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"github.com/shirou/gopsutil/internal/common"
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)
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func Partitions(all bool) ([]PartitionStat, error) {
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return PartitionsWithContext(context.Background(), all)
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}
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func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, error) {
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var ret []PartitionStat
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// get length
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count, err := unix.Getfsstat(nil, MNT_WAIT)
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if err != nil {
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return ret, err
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}
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fs := make([]Statfs, count)
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if _, err = Getfsstat(fs, MNT_WAIT); err != nil {
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return ret, err
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}
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for _, stat := range fs {
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opts := "rw"
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if stat.Flags&MNT_RDONLY != 0 {
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opts = "ro"
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}
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if stat.Flags&MNT_SYNCHRONOUS != 0 {
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opts += ",sync"
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}
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if stat.Flags&MNT_NOEXEC != 0 {
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opts += ",noexec"
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}
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if stat.Flags&MNT_NOSUID != 0 {
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opts += ",nosuid"
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}
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if stat.Flags&MNT_UNION != 0 {
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opts += ",union"
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}
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if stat.Flags&MNT_ASYNC != 0 {
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opts += ",async"
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}
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if stat.Flags&MNT_SUIDDIR != 0 {
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opts += ",suiddir"
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}
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if stat.Flags&MNT_SOFTDEP != 0 {
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opts += ",softdep"
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}
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if stat.Flags&MNT_NOSYMFOLLOW != 0 {
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opts += ",nosymfollow"
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}
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if stat.Flags&MNT_GJOURNAL != 0 {
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opts += ",gjounalc"
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}
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if stat.Flags&MNT_MULTILABEL != 0 {
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opts += ",multilabel"
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}
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if stat.Flags&MNT_ACLS != 0 {
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opts += ",acls"
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}
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if stat.Flags&MNT_NOATIME != 0 {
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opts += ",noattime"
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}
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if stat.Flags&MNT_NOCLUSTERR != 0 {
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opts += ",nocluster"
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}
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if stat.Flags&MNT_NOCLUSTERW != 0 {
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opts += ",noclusterw"
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}
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if stat.Flags&MNT_NFS4ACLS != 0 {
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opts += ",nfs4acls"
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}
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d := PartitionStat{
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Device: common.IntToString(stat.Mntfromname[:]),
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Mountpoint: common.IntToString(stat.Mntonname[:]),
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Fstype: common.IntToString(stat.Fstypename[:]),
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Opts: opts,
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}
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if all == false {
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if !path.IsAbs(d.Device) || !common.PathExists(d.Device) {
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continue
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}
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}
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ret = append(ret, d)
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}
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return ret, nil
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}
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func IOCounters(names ...string) (map[string]IOCountersStat, error) {
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return IOCountersWithContext(context.Background(), names...)
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}
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func IOCountersWithContext(ctx context.Context, names ...string) (map[string]IOCountersStat, error) {
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// statinfo->devinfo->devstat
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// /usr/include/devinfo.h
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ret := make(map[string]IOCountersStat)
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r, err := unix.Sysctl("kern.devstat.all")
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if err != nil {
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return nil, err
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}
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buf := []byte(r)
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length := len(buf)
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count := int(uint64(length) / uint64(sizeOfDevstat))
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buf = buf[8:] // devstat.all has version in the head.
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// parse buf to Devstat
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for i := 0; i < count; i++ {
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b := buf[i*sizeOfDevstat : i*sizeOfDevstat+sizeOfDevstat]
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d, err := parseDevstat(b)
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if err != nil {
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continue
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}
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un := strconv.Itoa(int(d.Unit_number))
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name := common.IntToString(d.Device_name[:]) + un
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if len(names) > 0 && !common.StringsHas(names, name) {
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continue
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}
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ds := IOCountersStat{
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ReadCount: d.Operations[DEVSTAT_READ],
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WriteCount: d.Operations[DEVSTAT_WRITE],
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ReadBytes: d.Bytes[DEVSTAT_READ],
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WriteBytes: d.Bytes[DEVSTAT_WRITE],
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ReadTime: uint64(d.Duration[DEVSTAT_READ].Compute() * 1000),
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WriteTime: uint64(d.Duration[DEVSTAT_WRITE].Compute() * 1000),
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IoTime: uint64(d.Busy_time.Compute() * 1000),
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Name: name,
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}
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ret[name] = ds
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}
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return ret, nil
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}
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func (b Bintime) Compute() float64 {
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BINTIME_SCALE := 5.42101086242752217003726400434970855712890625e-20
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return float64(b.Sec) + float64(b.Frac)*BINTIME_SCALE
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}
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// BT2LD(time) ((long double)(time).sec + (time).frac * BINTIME_SCALE)
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// Getfsstat is borrowed from pkg/syscall/syscall_freebsd.go
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// change Statfs_t to Statfs in order to get more information
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func Getfsstat(buf []Statfs, flags int) (n int, err error) {
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return GetfsstatWithContext(context.Background(), buf, flags)
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}
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func GetfsstatWithContext(ctx context.Context, buf []Statfs, flags int) (n int, err error) {
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var _p0 unsafe.Pointer
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var bufsize uintptr
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if len(buf) > 0 {
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_p0 = unsafe.Pointer(&buf[0])
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bufsize = unsafe.Sizeof(Statfs{}) * uintptr(len(buf))
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}
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r0, _, e1 := unix.Syscall(unix.SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
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n = int(r0)
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if e1 != 0 {
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err = e1
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}
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return
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}
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func parseDevstat(buf []byte) (Devstat, error) {
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var ds Devstat
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br := bytes.NewReader(buf)
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// err := binary.Read(br, binary.LittleEndian, &ds)
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err := common.Read(br, binary.LittleEndian, &ds)
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if err != nil {
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return ds, err
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}
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return ds, nil
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}
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func getFsType(stat unix.Statfs_t) string {
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return common.IntToString(stat.Fstypename[:])
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}
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