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Tap driver load fix.

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This commit is contained in:
Adam Ierymenko 2015-04-14 19:21:56 -07:00
parent c9af603b9f
commit 508519b62a
1 changed files with 13 additions and 16 deletions
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29
osdep/OSXEthernetTap.cpp
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@ -344,23 +344,20 @@ OSXEthernetTap::OSXEthernetTap(
Mutex::Lock _gl(globalTapCreateLock);
if (stat("/dev/zt0",&stattmp)) {
if (homePath) {
long kextpid = (long)vfork();
if (kextpid == 0) {
::chdir(homePath);
OSUtils::redirectUnixOutputs("/dev/null",(const char *)0);
::execl("/sbin/kextload","/sbin/kextload","-q","-repository",homePath,"tap.kext",(const char *)0);
::_exit(-1);
} else if (kextpid > 0) {
int exitcode = -1;
::waitpid(kextpid,&exitcode,0);
}
::usleep(500); // give tap device driver time to start up and try again
if (stat("/dev/zt0",&stattmp))
throw std::runtime_error("/dev/zt# tap devices do not exist and cannot load tap.kext");
if (::stat("/dev/zt0",&stattmp)) {
long kextpid = (long)vfork();
if (kextpid == 0) {
::chdir(homePath);
OSUtils::redirectUnixOutputs("/dev/null",(const char *)0);
::execl("/sbin/kextload","/sbin/kextload","-q","-repository",homePath,"tap.kext",(const char *)0);
::_exit(-1);
} else if (kextpid > 0) {
int exitcode = -1;
::waitpid(kextpid,&exitcode,0);
}
throw std::runtime_error("/dev/zt# tap devices do not exist and tap.kext not available");
::usleep(500); // give tap device driver time to start up and try again
if (::stat("/dev/zt0",&stattmp))
throw std::runtime_error("/dev/zt# tap devices do not exist and cannot load tap.kext");
}
// Try to reopen the last device we had, if we had one and it's still unused.