func DiskIOCounters() (map[string]DiskIOCountersStat, error) {
// statinfo->devinfo->devstat
// /usr/include/devinfo.h
// sysctl.sysctl ('kern.devstat.all', 0)
ret := make(map[string]DiskIOCountersStat)
mib := []int32{CTLKern, KernDevstat, KernDevstatAll}
buf, length, err := common.CallSyscall(mib)
if err != nil {
return nil, err
}
ds := Devstat{}
devstatLen := int(unsafe.Sizeof(ds))
count := int(length / uint64(devstatLen))
buf = buf[8:] // devstat.all has version in the head.
// parse buf to Devstat
for i := 0; i < count; i++ {
b := buf[i*devstatLen : i*devstatLen+devstatLen]
d, err := parseDevstat(b)
if err != nil {
continue
}
un := strconv.Itoa(int(d.Unit_number))
name := common.IntToString(d.Device_name[:]) + un
ds := DiskIOCountersStat{
ReadCount: d.Operations[DEVSTAT_READ],
WriteCount: d.Operations[DEVSTAT_WRITE],
ReadBytes: d.Bytes[DEVSTAT_READ],
WriteBytes: d.Bytes[DEVSTAT_WRITE],
ReadTime: d.Duration[DEVSTAT_READ].Compute(),
WriteTime: d.Duration[DEVSTAT_WRITE].Compute(),
Name: name,
}
ret[name] = ds
}
return ret, nil
}
func DiskPartitions(all bool) ([]DiskPartitionStat, error) {
var ret []DiskPartitionStat
// get length
count, err := syscall.Getfsstat(nil, MNT_WAIT)
if err != nil {
return ret, err
}
fs := make([]Statfs, count)
_, err = Getfsstat(fs, MNT_WAIT)
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 := DiskPartitionStat{
Device: common.IntToString(stat.Mntfromname[:]),
Mountpoint: common.IntToString(stat.Mntonname[:]),
Fstype: common.IntToString(stat.Fstypename[:]),
Opts: opts,
}
ret = append(ret, d)
}
return ret, nil
}
func getFsType(stat syscall.Statfs_t) string {
return common.IntToString(stat.Fstypename[:])
}