luxolus/open-consul
2
0
Fork 0
Code Issues 1 Pull requests Packages Releases Wiki Activity

sdk: read procfs instead of using sysctl command

Browse source 
This drops the dependency of sysctl command
This commit is contained in:
Shengjing Zhu 2020-10-25 00:36:13 +08:00
parent c7c5aaa609
commit 403e1e2534
1 changed files with 4 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
sdk/freeport/ephemeral_linux.go
View file

@ -4,18 +4,17 @@ package freeport
import ( import (
"fmt" "fmt"
"os/exec" "io/ioutil"
"regexp" "regexp"
"strconv" "strconv"
) )
const ephemeralPortRangeSysctlKey = "net.ipv4.ip_local_port_range" const ephemeralPortRangeProcFile = "/proc/sys/net/ipv4/ip_local_port_range"
var ephemeralPortRangePatt = regexp.MustCompile(`^\s*(\d+)\s+(\d+)\s*$`) var ephemeralPortRangePatt = regexp.MustCompile(`^\s*(\d+)\s+(\d+)\s*$`)
func getEphemeralPortRange() (int, int, error) { func getEphemeralPortRange() (int, int, error) {
cmd := exec.Command("/sbin/sysctl", "-n", ephemeralPortRangeSysctlKey) out, err := ioutil.ReadFile(ephemeralPortRangeProcFile)
out, err := cmd.Output()
if err != nil { if err != nil {
return 0, 0, err return 0, 0, err
} }
@ -32,5 +31,5 @@ func getEphemeralPortRange() (int, int, error) {
} }
} }
return 0, 0, fmt.Errorf("unexpected sysctl value %q for key %q", val, ephemeralPortRangeSysctlKey) return 0, 0, fmt.Errorf("unexpected sysctl value %q for key %q", val, ephemeralPortRangeProcFile)
} }