TheArchive/yggdrasil-go
1
0
Fork 0
mirror of https://github.com/yggdrasil-network/yggdrasil-go.git synced 2024-11-23 18:15:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

Check tun.config is not equal to nil before usage (#830)

Browse Source 
We have to check tun.config is not nil before first use, not after.
This commit is contained in:
Fyodor Ustinov 2021-09-21 23:19:25 +03:00 committed by GitHub
parent 3613614b41
commit 52345a2de4
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/tuntap/tun.go
View File

@ -114,11 +114,11 @@ func (tun *TunAdapter) _start() error {
if tun.isOpen { if tun.isOpen {
return errors.New("TUN module is already started") return errors.New("TUN module is already started")
} }
tun.config.RLock()
defer tun.config.RUnlock()
if tun.config == nil { if tun.config == nil {
return errors.New("no configuration available to TUN") return errors.New("no configuration available to TUN")
} }
tun.config.RLock()
defer tun.config.RUnlock()
tun.addr = tun.rwc.Address() tun.addr = tun.rwc.Address()
tun.subnet = tun.rwc.Subnet() tun.subnet = tun.rwc.Subnet()
addr := fmt.Sprintf("%s/%d", net.IP(tun.addr[:]).String(), 8*len(address.GetPrefix())-1) addr := fmt.Sprintf("%s/%d", net.IP(tun.addr[:]).String(), 8*len(address.GetPrefix())-1)