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

128 lines
3.4 KiB
Go

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