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Replace fork() with vfork() in tap config, faster.

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This commit is contained in:
Adam Ierymenko 2013-08-02 14:38:53 -04:00
parent 2a6b74746e
commit f823fd05ac
1 changed files with 7 additions and 7 deletions
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14
node/EthernetTap.cpp
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@ -218,7 +218,7 @@ EthernetTap::EthernetTap(
int kextpid;
char tmp[4096];
strcpy(tmp,_r->homePath.c_str());
if ((kextpid = (int)fork()) == 0) {
if ((kextpid = (int)vfork()) == 0) {
chdir(tmp);
execl(ZT_MAC_KEXTLOAD,ZT_MAC_KEXTLOAD,"-q","-repository",tmp,"tap.kext",(const char *)0);
exit(-1);
@ -255,7 +255,7 @@ EthernetTap::EthernetTap(
// Configure MAC address and MTU, bring interface up
long cpid;
if ((cpid = (long)fork()) == 0) {
if ((cpid = (long)vfork()) == 0) {
execl(ZT_ETHERTAP_IFCONFIG,ZT_ETHERTAP_IFCONFIG,_dev,"lladdr",ethaddr,"mtu",mtustr,"up",(const char *)0);
exit(-1);
} else {
@ -285,7 +285,7 @@ EthernetTap::~EthernetTap()
#ifdef __APPLE__
void EthernetTap::whack()
{
long cpid = (long)fork();
long cpid = (long)vfork();
if (cpid == 0) {
execl(ZT_MAC_IPCONFIG,ZT_MAC_IPCONFIG,"set",_dev,"AUTOMATIC-V6",(const char *)0);
exit(-1);
@ -304,7 +304,7 @@ void EthernetTap::whack() {}
#ifdef __LINUX__
static bool ___removeIp(const char *_dev,const InetAddress &ip)
{
long cpid = (long)fork();
long cpid = (long)vfork();
if (cpid == 0) {
execl(ZT_ETHERTAP_IP_COMMAND,ZT_ETHERTAP_IP_COMMAND,"addr","del",ip.toString().c_str(),"dev",_dev,(const char *)0);
exit(1); /* not reached unless exec fails */
@ -337,7 +337,7 @@ bool EthernetTap::addIP(const InetAddress &ip)
}
long cpid;
if ((cpid = (long)fork()) == 0) {
if ((cpid = (long)vfork()) == 0) {
execl(ZT_ETHERTAP_IP_COMMAND,ZT_ETHERTAP_IP_COMMAND,"addr","add",ip.toString().c_str(),"dev",_dev,(const char *)0);
exit(-1);
} else {
@ -357,7 +357,7 @@ bool EthernetTap::addIP(const InetAddress &ip)
static bool ___removeIp(const char *_dev,const InetAddress &ip)
{
int cpid;
if ((cpid = (int)fork()) == 0) {
if ((cpid = (int)vfork()) == 0) {
execl(ZT_ETHERTAP_IFCONFIG,ZT_ETHERTAP_IFCONFIG,_dev,"inet",ip.toIpString().c_str(),"-alias",(const char *)0);
exit(-1);
} else {
@ -390,7 +390,7 @@ bool EthernetTap::addIP(const InetAddress &ip)
}
int cpid;
if ((cpid = (int)fork()) == 0) {
if ((cpid = (int)vfork()) == 0) {
execl(ZT_ETHERTAP_IFCONFIG,ZT_ETHERTAP_IFCONFIG,_dev,ip.isV4() ? "inet" : "inet6",ip.toString().c_str(),"alias",(const char *)0);
exit(-1);
} else {