POSIX support varies by API level.
Bug: https://github.com/android-ndk/ndk/issues/332
Test: builds
Change-Id: I249c214d34244a1149ba6b1160e8eafc2cdbcdea
diff --git a/libc/include/bits/posix_limits.h b/libc/include/bits/posix_limits.h
index c498c69..db09bd7 100644
--- a/libc/include/bits/posix_limits.h
+++ b/libc/include/bits/posix_limits.h
@@ -31,20 +31,22 @@
#include <sys/cdefs.h>
+#define __BIONIC_POSIX_FEATURE_SINCE(level) (((__ANDROID_API__) >= level) ? 200809L : -1)
+
/* Any constant values here other than -1 or 200809L are explicitly specified by POSIX.1-2008. */
/* Keep this list sorted by name. */
-#define _POSIX_ADVISORY_INFO 200809L
+#define _POSIX_ADVISORY_INFO __BIONIC_POSIX_FEATURE_SINCE(23) /* posix_memadvise arrived late. */
#define _POSIX_AIO_LISTIO_MAX 2
#define _POSIX_AIO_MAX 1
#define _POSIX_ARG_MAX 4096
#define _POSIX_ASYNCHRONOUS_IO -1 /* not implemented */
-#define _POSIX_BARRIERS 200809L
+#define _POSIX_BARRIERS __BIONIC_POSIX_FEATURE_SINCE(24)
#define _POSIX_CHILD_MAX 25
#define _POSIX_CHOWN_RESTRICTED 1 /* yes, chown requires appropriate privileges */
#define _POSIX_CLOCK_SELECTION 200809L
#define _POSIX_CPUTIME 0 /* Use sysconf to detect support at runtime. */
#define _POSIX_DELAYTIMER_MAX 32
-#define _POSIX_FSYNC 200809L /* fdatasync() supported */
+#define _POSIX_FSYNC 200809L
#define _POSIX_HOST_NAME_MAX 255
#define _POSIX_IPV6 200809L
#define _POSIX_JOB_CONTROL 1 /* job control is a Linux feature */
@@ -53,8 +55,8 @@
#define _POSIX_MAPPED_FILES 200809L /* mmap-ed files supported */
#define _POSIX_MAX_CANON 255
#define _POSIX_MAX_INPUT 255
-#define _POSIX_MEMLOCK 200809L
-#define _POSIX_MEMLOCK_RANGE 200809L
+#define _POSIX_MEMLOCK __BIONIC_POSIX_FEATURE_SINCE(17) /* mlockall. */
+#define _POSIX_MEMLOCK_RANGE 200809L /* mlock. */
#define _POSIX_MEMORY_PROTECTION 200809L
#define _POSIX_MESSAGE_PASSING -1 /* not implemented */
#define _POSIX_MONOTONIC_CLOCK 0 /* the monotonic clock may be available; ask sysconf */
@@ -81,7 +83,7 @@
#define _POSIX_SHELL 1 /* system() supported */
#define _POSIX_SIGQUEUE_MAX 32
#define _POSIX_SPAWN -1 /* not implemented */
-#define _POSIX_SPIN_LOCKS 200809L
+#define _POSIX_SPIN_LOCKS __BIONIC_POSIX_FEATURE_SINCE(24)
#define _POSIX_SPORADIC_SERVER -1 /* not implemented */
#define _POSIX_SSIZE_MAX 32767
#define _POSIX_STREAM_MAX 8
@@ -103,7 +105,7 @@
#define _POSIX_THREAD_SAFE_FUNCTIONS 200809L
#define _POSIX_THREAD_SPORADIC_SERVER -1 /* not implemented */
#define _POSIX_THREAD_THREADS_MAX 64
-#define _POSIX_TIMEOUTS 200809L
+#define _POSIX_TIMEOUTS __BIONIC_POSIX_FEATURE_SINCE(21) /* pthread_mutex_timedlock arrived late. */
#define _POSIX_TIMERS 200809L /* Posix timers are supported */
#define _POSIX_TIMER_MAX 32
#define _POSIX_TRACE -1 /* not implemented */