func TestGetfsstat(t *testing.T) {
const flags = MNT_NOWAIT // see Issue 16937
n, err := syscall.Getfsstat(nil, flags)
t.Logf("Getfsstat(nil, %d) = (%v, %v)", flags, n, err)
if err != nil {
t.Fatal(err)
}
data := make([]syscall.Statfs_t, n)
n2, err := syscall.Getfsstat(data, flags)
t.Logf("Getfsstat([]syscall.Statfs_t, %d) = (%v, %v)", flags, n2, err)
if err != nil {
t.Fatal(err)
}
if n != n2 {
t.Errorf("Getfsstat(nil) = %d, but subsequent Getfsstat(slice) = %d", n, n2)
}
for i, stat := range data {
if stat == (syscall.Statfs_t{}) {
t.Errorf("index %v is an empty Statfs_t struct", i)
}
}
if t.Failed() {
for i, stat := range data[:n2] {
t.Logf("data[%v] = %+v", i, stat)
}
mount, err := exec.Command("mount").CombinedOutput()
if err != nil {
t.Logf("mount: %v\n%s", err, mount)
} else {
t.Logf("mount: %s", mount)
}
}
}
func (self *FileSystemList) Get() error {
num, err := syscall.Getfsstat(nil, C.MNT_NOWAIT)
if err != nil {
return err
}
buf := make([]syscall.Statfs_t, num)
_, err = syscall.Getfsstat(buf, C.MNT_NOWAIT)
if err != nil {
return err
}
fslist := make([]FileSystem, 0, num)
for i := 0; i < num; i++ {
fs := FileSystem{}
fs.DirName = bytePtrToString(&buf[i].Mntonname[0])
fs.DevName = bytePtrToString(&buf[i].Mntfromname[0])
fs.SysTypeName = bytePtrToString(&buf[i].Fstypename[0])
fslist = append(fslist, fs)
}
self.List = fslist
return err
}
func TestGetfsstat(t *testing.T) {
n, err := syscall.Getfsstat(nil, MNT_WAIT)
if err != nil {
t.Fatal(err)
}
data := make([]syscall.Statfs_t, n)
n, err = syscall.Getfsstat(data, MNT_WAIT)
if err != nil {
t.Fatal(err)
}
empty := syscall.Statfs_t{}
for _, stat := range data {
if stat == empty {
t.Fatal("an empty Statfs_t struct was returned")
}
}
}
func processFilesystems(f func(fstype, path string) error) error {
n, err := syscall.Getfsstat(nil, 1 /* MNT_WAIT */)
if err != nil {
return errors.New("system: getfsstat error: " + err.Error())
}
filesystems := make([]syscall.Statfs_t, n)
n, err = syscall.Getfsstat(filesystems, 1 /* MNT_WAIT */)
if err != nil {
return errors.New("system: Getfsstat error: " + err.Error())
}
for _, fs := range filesystems[:n] {
fstype := stringFromInt8(fs.Fstypename[:])
path := stringFromInt8(fs.Mntonname[:])
if err := f(fstype, path); err != nil {
return err
}
}
return nil
}
func Partitions(all bool) ([]PartitionStat, error) {
var ret []PartitionStat
// 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 := 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
}
