.examples
.github
alerting
client
config
controller
core
docs
jsonpath
metrics
pattern
security
storage
test
util
vendor
github.com
TwiN
beorn7
cespare
coreos
go-ping
golang
google
gorilla
kballard
lib
mattn
matttproud
miekg
prometheus
client_golang
client_model
common
procfs
internal
.gitignore
.golangci.yml
CODE_OF_CONDUCT.md
CONTRIBUTING.md
LICENSE
MAINTAINERS.md
Makefile
Makefile.common
NOTICE
README.md
SECURITY.md
arp.go
buddyinfo.go
cmdline.go
cpuinfo.go
cpuinfo_armx.go
cpuinfo_mipsx.go
cpuinfo_others.go
cpuinfo_ppcx.go
cpuinfo_riscvx.go
cpuinfo_s390x.go
cpuinfo_x86.go
crypto.go
doc.go
fixtures.ttar
fs.go
fscache.go
ipvs.go
kernel_random.go
loadavg.go
mdstat.go
meminfo.go
mountinfo.go
mountstats.go
net_conntrackstat.go
net_dev.go
net_ip_socket.go
net_protocols.go
net_sockstat.go
net_softnet.go
net_tcp.go
net_udp.go
net_unix.go
netstat.go
proc.go
proc_cgroup.go
proc_environ.go
proc_fdinfo.go
proc_io.go
proc_limits.go
proc_maps.go
proc_ns.go
proc_psi.go
proc_smaps.go
proc_stat.go
proc_status.go
schedstat.go
slab.go
stat.go
swaps.go
ttar
vm.go
xfrm.go
zoneinfo.go
remyoudompheng
wcharczuk
golang.org
google.golang.org
gopkg.in
lukechampine.com
modernc.org
modules.txt
watchdog
web
.dockerignore
.gitattributes
.gitignore
Dockerfile
LICENSE
Makefile
README.md
config.yaml
go.mod
go.sum
main.go
69 lines
1.9 KiB
Go
69 lines
1.9 KiB
Go
// Copyright 2018 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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package procfs
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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)
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// Namespace represents a single namespace of a process.
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type Namespace struct {
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Type string // Namespace type.
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Inode uint32 // Inode number of the namespace. If two processes are in the same namespace their inodes will match.
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}
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// Namespaces contains all of the namespaces that the process is contained in.
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type Namespaces map[string]Namespace
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// Namespaces reads from /proc/<pid>/ns/* to get the namespaces of which the
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// process is a member.
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func (p Proc) Namespaces() (Namespaces, error) {
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d, err := os.Open(p.path("ns"))
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if err != nil {
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return nil, err
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}
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defer d.Close()
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names, err := d.Readdirnames(-1)
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if err != nil {
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return nil, fmt.Errorf("failed to read contents of ns dir: %w", err)
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}
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ns := make(Namespaces, len(names))
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for _, name := range names {
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target, err := os.Readlink(p.path("ns", name))
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if err != nil {
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return nil, err
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}
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fields := strings.SplitN(target, ":", 2)
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if len(fields) != 2 {
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return nil, fmt.Errorf("failed to parse namespace type and inode from %q", target)
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}
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typ := fields[0]
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inode, err := strconv.ParseUint(strings.Trim(fields[1], "[]"), 10, 32)
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if err != nil {
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return nil, fmt.Errorf("failed to parse inode from %q: %w", fields[1], err)
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}
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ns[name] = Namespace{typ, uint32(inode)}
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}
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return ns, nil
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}
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