diff --git a/libc/bionic/pty.cpp b/libc/bionic/pty.cpp
index 1a37847..d699ff5 100644
--- a/libc/bionic/pty.cpp
+++ b/libc/bionic/pty.cpp
@@ -151,22 +151,24 @@
   return 0;
 }
 
-int forkpty(int* master, char* name, const termios* t, const winsize* ws) {
+int forkpty(int* amaster, char* name, const termios* t, const winsize* ws) {
+  int master;
   int slave;
-  if (openpty(master, &slave, name, t, ws) == -1) {
+  if (openpty(&master, &slave, name, t, ws) == -1) {
     return -1;
   }
 
   pid_t pid = fork();
   if (pid == -1) {
-    close(*master);
+    close(master);
     close(slave);
     return -1;
   }
 
   if (pid == 0) {
     // Child.
-    close(*master);
+    *amaster = -1;
+    close(master);
     if (login_tty(slave) == -1) {
       _exit(1);
     }
@@ -174,6 +176,7 @@
   }
 
   // Parent.
+  *amaster = master;
   close(slave);
   return pid;
 }
diff --git a/libc/bionic/sysconf.cpp b/libc/bionic/sysconf.cpp
index 8a55f7e..125b3c9 100644
--- a/libc/bionic/sysconf.cpp
+++ b/libc/bionic/sysconf.cpp
@@ -41,16 +41,6 @@
 
 #include "private/bionic_tls.h"
 
-static int __sysconf_monotonic_clock() {
-  timespec t;
-  int rc = clock_getres(CLOCK_MONOTONIC, &t);
-  return (rc == -1) ? -1 : _POSIX_VERSION;
-}
-
-static bool __sysconf_has_clock(clockid_t clock_id) {
-  return clock_getres(clock_id, NULL) == 0;
-}
-
 static long __sysconf_rlimit(int resource) {
   rlimit rl;
   getrlimit(resource, &rl);
@@ -147,7 +137,7 @@
     case _SC_NPROCESSORS_ONLN:  return get_nprocs();
     case _SC_PHYS_PAGES:        return get_phys_pages();
     case _SC_AVPHYS_PAGES:      return get_avphys_pages();
-    case _SC_MONOTONIC_CLOCK:   return __sysconf_monotonic_clock();
+    case _SC_MONOTONIC_CLOCK:   return _POSIX_VERSION;
 
     case _SC_2_PBS:             return -1;     // Obsolescent in POSIX.1-2008.
     case _SC_2_PBS_ACCOUNTING:  return -1;     // Obsolescent in POSIX.1-2008.
@@ -158,8 +148,7 @@
     case _SC_ADVISORY_INFO:     return _POSIX_ADVISORY_INFO;
     case _SC_BARRIERS:          return _POSIX_BARRIERS;
     case _SC_CLOCK_SELECTION:   return _POSIX_CLOCK_SELECTION;
-    case _SC_CPUTIME:
-      return __sysconf_has_clock(CLOCK_PROCESS_CPUTIME_ID) ?_POSIX_VERSION : -1;
+    case _SC_CPUTIME:           return _POSIX_VERSION;
 
     case _SC_HOST_NAME_MAX:     return _POSIX_HOST_NAME_MAX;    // Minimum requirement.
     case _SC_IPV6:              return _POSIX_IPV6;
@@ -172,8 +161,7 @@
     case _SC_SPORADIC_SERVER:   return _POSIX_SPORADIC_SERVER;
     case _SC_SS_REPL_MAX:       return -1;
     case _SC_SYMLOOP_MAX:       return _POSIX_SYMLOOP_MAX;      // Minimum requirement.
-    case _SC_THREAD_CPUTIME:
-      return __sysconf_has_clock(CLOCK_THREAD_CPUTIME_ID) ? _POSIX_VERSION : -1;
+    case _SC_THREAD_CPUTIME:    return _POSIX_VERSION;
 
     case _SC_THREAD_PROCESS_SHARED: return _POSIX_THREAD_PROCESS_SHARED;
     case _SC_THREAD_ROBUST_PRIO_INHERIT:  return _POSIX_THREAD_ROBUST_PRIO_INHERIT;