116 lines
3.1 KiB
Go
116 lines
3.1 KiB
Go
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// +build solaris
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package disk
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import (
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"bufio"
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"context"
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"fmt"
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"math"
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"os"
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"strings"
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"github.com/shirou/gopsutil/internal/common"
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"golang.org/x/sys/unix"
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)
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const (
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// _DEFAULT_NUM_MOUNTS is set to `cat /etc/mnttab | wc -l` rounded up to the
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// nearest power of two.
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_DEFAULT_NUM_MOUNTS = 32
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// _MNTTAB default place to read mount information
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_MNTTAB = "/etc/mnttab"
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)
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var (
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// A blacklist of read-only virtual filesystems. Writable filesystems are of
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// operational concern and must not be included in this list.
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fsTypeBlacklist = map[string]struct{}{
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"ctfs": struct{}{},
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"dev": struct{}{},
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"fd": struct{}{},
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"lofs": struct{}{},
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"lxproc": struct{}{},
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"mntfs": struct{}{},
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"objfs": struct{}{},
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"proc": struct{}{},
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}
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)
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func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, error) {
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ret := make([]PartitionStat, 0, _DEFAULT_NUM_MOUNTS)
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// Scan mnttab(4)
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f, err := os.Open(_MNTTAB)
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if err != nil {
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}
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defer func() {
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if err == nil {
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err = f.Close()
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} else {
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f.Close()
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}
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}()
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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fields := strings.Split(scanner.Text(), "\t")
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if _, found := fsTypeBlacklist[fields[2]]; found {
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continue
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}
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ret = append(ret, PartitionStat{
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// NOTE(seanc@): Device isn't exactly accurate: from mnttab(4): "The name
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// of the resource that has been mounted." Ideally this value would come
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// from Statvfs_t.Fsid but I'm leaving it to the caller to traverse
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// unix.Statvfs().
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Device: fields[0],
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Mountpoint: fields[1],
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Fstype: fields[2],
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Opts: fields[3],
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})
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}
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if err := scanner.Err(); err != nil {
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return nil, fmt.Errorf("unable to scan %q: %v", _MNTTAB, err)
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}
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return ret, err
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}
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func IOCountersWithContext(ctx context.Context, names ...string) (map[string]IOCountersStat, error) {
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return nil, common.ErrNotImplementedError
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}
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func UsageWithContext(ctx context.Context, path string) (*UsageStat, error) {
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statvfs := unix.Statvfs_t{}
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if err := unix.Statvfs(path, &statvfs); err != nil {
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return nil, fmt.Errorf("unable to call statvfs(2) on %q: %v", path, err)
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}
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usageStat := &UsageStat{
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Path: path,
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Fstype: common.IntToString(statvfs.Basetype[:]),
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Total: statvfs.Blocks * statvfs.Frsize,
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Free: statvfs.Bfree * statvfs.Frsize,
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Used: (statvfs.Blocks - statvfs.Bfree) * statvfs.Frsize,
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// NOTE: ZFS (and FreeBZSD's UFS2) use dynamic inode/dnode allocation.
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// Explicitly return a near-zero value for InodesUsedPercent so that nothing
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// attempts to garbage collect based on a lack of available inodes/dnodes.
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// Similarly, don't use the zero value to prevent divide-by-zero situations
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// and inject a faux near-zero value. Filesystems evolve. Has your
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// filesystem evolved? Probably not if you care about the number of
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// available inodes.
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InodesTotal: 1024.0 * 1024.0,
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InodesUsed: 1024.0,
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InodesFree: math.MaxUint64,
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InodesUsedPercent: (1024.0 / (1024.0 * 1024.0)) * 100.0,
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}
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usageStat.UsedPercent = (float64(usageStat.Used) / float64(usageStat.Total)) * 100.0
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return usageStat, nil
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}
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