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refactor: move from io/ioutil to io and os packages

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The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit
replaces the existing io/ioutil functions with their new definitions in
io and os packages.

Reference: https://golang.org/doc/go1.16#ioutil
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
This commit is contained in:
Eng Zer Jun
2022-09-15 20:06:59 +08:00
committed by Brad Fitzpatrick
parent 027111fb5a
commit f0347e841f
60 changed files with 112 additions and 156 deletions
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7
wgengine/router/router_linux.go
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@@ -8,7 +8,6 @@ import (
"bytes"
"errors"
"fmt"
"io/ioutil"
"net/netip"
"os"
"os/exec"
@@ -1601,7 +1600,7 @@ func checkIPv6(logf logger.Logf) error {
if os.IsNotExist(err) {
return err
}
bs, err := ioutil.ReadFile("/proc/sys/net/ipv6/conf/all/disable_ipv6")
bs, err := os.ReadFile("/proc/sys/net/ipv6/conf/all/disable_ipv6")
if err != nil {
// Be conservative if we can't find the ipv6 configuration knob.
return err
@@ -1617,7 +1616,7 @@ func checkIPv6(logf logger.Logf) error {
// Older kernels don't support IPv6 policy routing. Some kernels
// support policy routing but don't have this knob, so absence of
// the knob is not fatal.
bs, err = ioutil.ReadFile("/proc/sys/net/ipv6/conf/all/disable_policy")
bs, err = os.ReadFile("/proc/sys/net/ipv6/conf/all/disable_policy")
if err == nil {
disabled, err = strconv.ParseBool(strings.TrimSpace(string(bs)))
if err != nil {
@@ -1647,7 +1646,7 @@ func checkIPv6(logf logger.Logf) error {
// netfilter, so some older distros ship a kernel that can't NAT IPv6
// traffic.
func supportsV6NAT() bool {
bs, err := ioutil.ReadFile("/proc/net/ip6_tables_names")
bs, err := os.ReadFile("/proc/net/ip6_tables_names")
if err != nil {
// Can't read the file. Assume SNAT works.
return true