mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-28 06:59:44 -08:00
Implement file systems on FreeBSD without cgo
The code may also work for other BSDs, but I don't have access to those for testing.
This commit is contained in:
parent
54c74923ee
commit
0f6191987e
|
@ -11,7 +11,7 @@
|
|||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// +build freebsd openbsd darwin,amd64 dragonfly
|
||||
// +build openbsd darwin,amd64 dragonfly
|
||||
// +build !nofilesystem
|
||||
|
||||
package collector
|
||||
|
|
88
collector/filesystem_freebsd.go
Normal file
88
collector/filesystem_freebsd.go
Normal file
|
@ -0,0 +1,88 @@
|
|||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// +build !nofilesystem
|
||||
|
||||
package collector
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"unsafe"
|
||||
|
||||
"github.com/prometheus/common/log"
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
const (
|
||||
defIgnoredMountPoints = "^/(dev)($|/)"
|
||||
defIgnoredFSTypes = "^devfs$"
|
||||
MNT_RDONLY = 0x1
|
||||
MNT_NOWAIT = 0x2
|
||||
)
|
||||
|
||||
func gostring(b []int8) string {
|
||||
bb := *(*[]byte)(unsafe.Pointer(&b))
|
||||
idx := bytes.IndexByte(bb, 0)
|
||||
if idx < 0 {
|
||||
return ""
|
||||
}
|
||||
return string(bb[:idx])
|
||||
}
|
||||
|
||||
// Expose filesystem fullness.
|
||||
func (c *filesystemCollector) GetStats() (stats []filesystemStats, err error) {
|
||||
buf := make([]unix.Statfs_t, 16)
|
||||
for {
|
||||
n, err := unix.Getfsstat(buf, MNT_NOWAIT)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if n < len(buf) {
|
||||
buf = buf[:n]
|
||||
break
|
||||
}
|
||||
buf = make([]unix.Statfs_t, len(buf)*2)
|
||||
}
|
||||
stats = []filesystemStats{}
|
||||
for _, fs := range buf {
|
||||
mountpoint := gostring(fs.Mntonname[:])
|
||||
if c.ignoredMountPointsPattern.MatchString(mountpoint) {
|
||||
log.Debugf("Ignoring mount point: %s", mountpoint)
|
||||
continue
|
||||
}
|
||||
|
||||
device := gostring(fs.Mntfromname[:])
|
||||
fstype := gostring(fs.Fstypename[:])
|
||||
if c.ignoredFSTypesPattern.MatchString(fstype) {
|
||||
log.Debugf("Ignoring fs type: %s", fstype)
|
||||
continue
|
||||
}
|
||||
|
||||
var ro float64
|
||||
if (fs.Flags & MNT_RDONLY) != 0 {
|
||||
ro = 1
|
||||
}
|
||||
|
||||
labelValues := []string{device, mountpoint, fstype}
|
||||
stats = append(stats, filesystemStats{
|
||||
labelValues: labelValues,
|
||||
size: float64(fs.Blocks) * float64(fs.Bsize),
|
||||
free: float64(fs.Bfree) * float64(fs.Bsize),
|
||||
avail: float64(fs.Bavail) * float64(fs.Bsize),
|
||||
files: float64(fs.Files),
|
||||
filesFree: float64(fs.Ffree),
|
||||
ro: ro,
|
||||
})
|
||||
}
|
||||
return stats, nil
|
||||
}
|
Loading…
Reference in a new issue