Fix JobControl tests for open source.

ioctl calls with TIOCSCTTY fail if the calling process already has a
controlling terminal, which occurs on a 5.4 kernel like our Ubuntu 18 CI.
Thus, run tests calling ioctl TTOCSCTTY in clean subprocess.

Also, while we're here, switch out non-inclusive master/slave for main/replica.

PiperOrigin-RevId: 328756598

2 files changed, 9 insertions, 9 deletions

diff --git a/test/util/pty_util.cc b/test/util/pty_util.cc
index c01f916aa..5fa622922 100644
--- a/test/util/pty_util.cc
+++ b/test/util/pty_util.cc
@@ -23,25 +23,25 @@
 namespace gvisor {
 namespace testing {
 
-PosixErrorOr<FileDescriptor> OpenSlave(const FileDescriptor& master) {
-  PosixErrorOr<int> n = SlaveID(master);
+PosixErrorOr<FileDescriptor> OpenReplica(const FileDescriptor& main) {
+  PosixErrorOr<int> n = ReplicaID(main);
   if (!n.ok()) {
     return PosixErrorOr<FileDescriptor>(n.error());
   }
   return Open(absl::StrCat("/dev/pts/", n.ValueOrDie()), O_RDWR | O_NONBLOCK);
 }
 
-PosixErrorOr<int> SlaveID(const FileDescriptor& master) {
+PosixErrorOr<int> ReplicaID(const FileDescriptor& main) {
   // Get pty index.
   int n;
-  int ret = ioctl(master.get(), TIOCGPTN, &n);
+  int ret = ioctl(main.get(), TIOCGPTN, &n);
   if (ret < 0) {
     return PosixError(errno, "ioctl(TIOCGPTN) failed");
   }
 
   // Unlock pts.
   int unlock = 0;
-  ret = ioctl(master.get(), TIOCSPTLCK, &unlock);
+  ret = ioctl(main.get(), TIOCSPTLCK, &unlock);
   if (ret < 0) {
     return PosixError(errno, "ioctl(TIOSPTLCK) failed");
   }
diff --git a/test/util/pty_util.h b/test/util/pty_util.h
index 0722da379..dff6adab5 100644
--- a/test/util/pty_util.h
+++ b/test/util/pty_util.h
@@ -21,11 +21,11 @@
 namespace gvisor {
 namespace testing {
 
-// Opens the slave end of the passed master as R/W and nonblocking.
-PosixErrorOr<FileDescriptor> OpenSlave(const FileDescriptor& master);
+// Opens the replica end of the passed main as R/W and nonblocking.
+PosixErrorOr<FileDescriptor> OpenReplica(const FileDescriptor& main);
 
-// Get the number of the slave end of the master.
-PosixErrorOr<int> SlaveID(const FileDescriptor& master);
+// Get the number of the replica end of the main.
+PosixErrorOr<int> ReplicaID(const FileDescriptor& main);
 
 }  // namespace testing
 }  // namespace gvisor