mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-23 20:36:21 +01:00
2023349c77
Log using the machinery introduced in #3097. Signed-off-by: Pranshu Srivastava <rexagod@gmail.com>
133 lines
3.3 KiB
Go
133 lines
3.3 KiB
Go
// Copyright 2024 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.
|
|
|
|
//go:build !nofilesystem
|
|
// +build !nofilesystem
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
const (
|
|
defMountPointsExcluded = "^/(dev)($|/)"
|
|
defFSTypesExcluded = "^(kernfs|procfs|ptyfs|fdesc)$"
|
|
_VFS_NAMELEN = 32
|
|
_VFS_MNAMELEN = 1024
|
|
)
|
|
|
|
/*
|
|
* Go uses the NetBSD 9 ABI and thus syscall.SYS_GETVFSSTAT is compat_90_getvfsstat.
|
|
* We have to declare struct statvfs90 because it is not included in the unix package.
|
|
* See NetBSD/src/sys/compat/sys/statvfs.h.
|
|
*/
|
|
type statvfs90 struct {
|
|
F_flag uint
|
|
F_bsize uint
|
|
F_frsize uint
|
|
F_iosize uint
|
|
|
|
F_blocks uint64
|
|
F_bfree uint64
|
|
F_bavail uint64
|
|
F_bresvd uint64
|
|
|
|
F_files uint64
|
|
F_ffree uint64
|
|
F_favail uint64
|
|
F_fresvd uint64
|
|
|
|
F_syncreads uint64
|
|
F_syncwrites uint64
|
|
|
|
F_asyncreads uint64
|
|
F_asyncwrites uint64
|
|
|
|
F_fsidx [2]uint32
|
|
F_fsid uint32
|
|
F_namemax uint
|
|
F_owner uint32
|
|
F_spare [4]uint32
|
|
|
|
F_fstypename [_VFS_NAMELEN]byte
|
|
F_mntonname [_VFS_MNAMELEN]byte
|
|
F_mntfromname [_VFS_MNAMELEN]byte
|
|
|
|
cgo_pad [4]byte
|
|
}
|
|
|
|
func (c *filesystemCollector) GetStats() (stats []filesystemStats, err error) {
|
|
var mnt []statvfs90
|
|
if syscall.SYS_GETVFSSTAT != 356 /* compat_90_getvfsstat */ {
|
|
/*
|
|
* Catch if golang ever updates to newer ABI and bail.
|
|
*/
|
|
return nil, fmt.Errorf("getvfsstat: ABI mismatch")
|
|
}
|
|
for {
|
|
r1, _, errno := syscall.Syscall(syscall.SYS_GETVFSSTAT, uintptr(0), 0, unix.ST_NOWAIT)
|
|
if errno != 0 {
|
|
return nil, fmt.Errorf("getvfsstat: %s", string(errno))
|
|
}
|
|
mnt = make([]statvfs90, r1, r1)
|
|
r2, _, errno := syscall.Syscall(syscall.SYS_GETVFSSTAT, uintptr(unsafe.Pointer(&mnt[0])), unsafe.Sizeof(mnt[0])*r1, unix.ST_NOWAIT /* ST_NOWAIT */)
|
|
if errno != 0 {
|
|
return nil, fmt.Errorf("getvfsstat: %s", string(errno))
|
|
}
|
|
if r1 == r2 {
|
|
break
|
|
}
|
|
}
|
|
|
|
stats = []filesystemStats{}
|
|
for _, v := range mnt {
|
|
mountpoint := unix.ByteSliceToString(v.F_mntonname[:])
|
|
if c.excludedMountPointsPattern.MatchString(mountpoint) {
|
|
c.logger.Debug("msg", "Ignoring mount point", "mountpoint", mountpoint)
|
|
continue
|
|
}
|
|
|
|
device := unix.ByteSliceToString(v.F_mntfromname[:])
|
|
fstype := unix.ByteSliceToString(v.F_fstypename[:])
|
|
if c.excludedFSTypesPattern.MatchString(fstype) {
|
|
c.logger.Debug("msg", "Ignoring fs type", "type", fstype)
|
|
continue
|
|
}
|
|
|
|
var ro float64
|
|
if (v.F_flag & unix.MNT_RDONLY) != 0 {
|
|
ro = 1
|
|
}
|
|
|
|
stats = append(stats, filesystemStats{
|
|
labels: filesystemLabels{
|
|
device: device,
|
|
mountPoint: mountpoint,
|
|
fsType: fstype,
|
|
},
|
|
size: float64(v.F_blocks) * float64(v.F_bsize),
|
|
free: float64(v.F_bfree) * float64(v.F_bsize),
|
|
avail: float64(v.F_bavail) * float64(v.F_bsize),
|
|
files: float64(v.F_files),
|
|
filesFree: float64(v.F_ffree),
|
|
ro: ro,
|
|
})
|
|
}
|
|
return stats, nil
|
|
}
|