mirror of
https://github.com/prometheus/node_exporter
synced 2024-12-11 17:06:04 +00:00
86 lines
2.4 KiB
Go
86 lines
2.4 KiB
Go
// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build ((openbsd && !amd64) || darwin || dragonfly) && !nofilesystem
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// +build openbsd,!amd64 darwin dragonfly
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// +build !nofilesystem
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package collector
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import (
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"errors"
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"unsafe"
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"github.com/go-kit/log/level"
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)
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/*
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#include <stdio.h>
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*/
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import "C"
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const (
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defMountPointsExcluded = "^/(dev)($|/)"
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defFSTypesExcluded = "^devfs$"
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readOnly = 0x1 // MNT_RDONLY
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)
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// Expose filesystem fullness.
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func (c *filesystemCollector) GetStats() (stats []filesystemStats, err error) {
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var mntbuf *C.struct_statfs
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count := C.getmntinfo(&mntbuf, C.MNT_NOWAIT)
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if count == 0 {
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return nil, errors.New("getmntinfo() failed")
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}
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mnt := (*[1 << 20]C.struct_statfs)(unsafe.Pointer(mntbuf))
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stats = []filesystemStats{}
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for i := 0; i < int(count); i++ {
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mountpoint := C.GoString(&mnt[i].f_mntonname[0])
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if c.excludedMountPointsPattern.MatchString(mountpoint) {
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level.Debug(c.logger).Log("msg", "Ignoring mount point", "mountpoint", mountpoint)
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continue
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}
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device := C.GoString(&mnt[i].f_mntfromname[0])
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fstype := C.GoString(&mnt[i].f_fstypename[0])
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if c.excludedFSTypesPattern.MatchString(fstype) {
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level.Debug(c.logger).Log("msg", "Ignoring fs type", "type", fstype)
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continue
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}
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var ro float64
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if (mnt[i].f_flags & readOnly) != 0 {
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ro = 1
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}
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stats = append(stats, filesystemStats{
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labels: filesystemLabels{
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device: device,
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mountPoint: rootfsStripPrefix(mountpoint),
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fsType: fstype,
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},
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size: float64(mnt[i].f_blocks) * float64(mnt[i].f_bsize),
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free: float64(mnt[i].f_bfree) * float64(mnt[i].f_bsize),
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avail: float64(mnt[i].f_bavail) * float64(mnt[i].f_bsize),
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files: float64(mnt[i].f_files),
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filesFree: float64(mnt[i].f_ffree),
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ro: ro,
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})
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}
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return stats, nil
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}
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