* sysdeps/posix/sysconf.c (__sysconf): Use #if _POSIX_FOO > 0

	rather than #ifdef _POSIX_FOO for options.  We should return -1
	at runtime for an option defined to 0 at compile time.

	* sysdeps/mach/hurd/bits/posix_opt.h: Define many missing options,
	many to -1 or 0.

2006-03-05  Roland McGrath  <roland@redhat.com>

	* sysdeps/unix/sysv/linux/sysconf.c (__sysconf)
	[__NR_clock_getres || HP_TIMING_AVAIL]: Handle _SC_CPUTIME,
	_SC_THREAD_CPUTIME.

1 files changed, 97 insertions, 11 deletions

diff --git a/sysdeps/mach/hurd/bits/posix_opt.h b/sysdeps/mach/hurd/bits/posix_opt.h
index 326bebff7f..6747bc276e 100644
--- a/sysdeps/mach/hurd/bits/posix_opt.h
+++ b/sysdeps/mach/hurd/bits/posix_opt.h
@@ -1,5 +1,5 @@
 /* Define POSIX options for GNU/Hurd.
-   Copyright (C) 1998,2000,2001,2002 Free Software Foundation, Inc.
+   Copyright (C) 1998,2000,2001,2002,2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -31,13 +31,6 @@
 /* Processes have a saved set-user-ID and a saved set-group-ID.  */
 #define	_POSIX_SAVED_IDS	1
 
-#if 0				/* XXX implement aio_* */
-/* Asynchronous I/O is supported.  */
-#define _POSIX_ASYNCHRONOUS_IO	1
-/* Alternative name for Unix98.  */
-#define _LFS_ASYNCHRONOUS_IO	_POSIX_ASYNCHRONOUS_IO
-#endif
-
 /* Synchronizing file data is supported, but msync is missing.  */
 #undef _POSIX_SYNCHRONIZED_IO
 
@@ -47,15 +40,15 @@
 /* Mapping of files to memory is supported.  */
 #define	_POSIX_MAPPED_FILES	200112L
 
+/* Locking of all memory could be supported in future.  */
+#define	_POSIX_MEMLOCK	0
+
 /* Locking of ranges of memory is supported.  */
 #define	_POSIX_MEMLOCK_RANGE	200112L
 
 /* Setting of memory protections is supported.  */
 #define	_POSIX_MEMORY_PROTECTION	200112L
 
-/* POSIX.4 shared memory objects are supported (using regular files).  */
-#define _POSIX_SHARED_MEMORY_OBJECTS	_POSIX_MAPPED_FILES
-
 /* Elements of the `c_cc' member of `struct termios' structure
    can be disabled by using the value _POSIX_VDISABLE.  */
 #define _POSIX_VDISABLE			((unsigned char) -1)
@@ -67,13 +60,106 @@
 #undef _POSIX_NO_TRUNC		/* Overlong file names get error?  */
 #undef _POSIX_SYNC_IO		/* File supports O_SYNC et al?  */
 
+
+/* We do not have the POSIX threads interface.  */
+#define _POSIX_THREADS	-1
+
+/* We have the reentrant functions described in POSIX.  */
+#define _POSIX_REENTRANT_FUNCTIONS      1
+#define _POSIX_THREAD_SAFE_FUNCTIONS	200112L
+
+/* These are all things that won't be supported when _POSIX_THREADS is not.  */
+#define _POSIX_THREAD_PRIORITY_SCHEDULING	-1
+#define _POSIX_THREAD_ATTR_STACKSIZE		-1
+#define _POSIX_THREAD_ATTR_STACKADDR		-1
+#define _POSIX_SEMAPHORES			-1
+
+/* Real-time signals are not yet supported.  */
+#define _POSIX_REALTIME_SIGNALS	-1
+
+/* Asynchronous I/O might supported with the existing ABI.  */
+#define _POSIX_ASYNCHRONOUS_IO	0
+/* Alternative name for Unix98.  */
+#define _LFS_ASYNCHRONOUS_IO	_POSIX_ASYNCHRONOUS_IO
+
+/* The LFS support in asynchronous I/O is also available.  */
+#define _LFS64_ASYNCHRONOUS_IO	_POSIX_ASYNCHRONOUS_IO
+
+/* The rest of the LFS is also available.  */
+#define _LFS_LARGEFILE		1
+#define _LFS64_LARGEFILE	1
+#define _LFS64_STDIO		1
+
+/* POSIX.4 shared memory objects are supported (using regular files).  */
+#define _POSIX_SHARED_MEMORY_OBJECTS	_POSIX_MAPPED_FILES
+
+/* CPU-time clocks support needs to be checked at runtime.  */
+#define _POSIX_CPUTIME	0
+
+/* Clock support in threads must be also checked at runtime.  */
+#define _POSIX_THREAD_CPUTIME	0
+
 /* GNU libc provides regular expression handling.  */
 #define _POSIX_REGEXP	1
 
+/* Reader/Writer locks are not available.  */
+#define _POSIX_READER_WRITER_LOCKS	-1
+
 /* We have a POSIX shell.  */
 #define _POSIX_SHELL	1
 
+/* We cannot support the Timeouts option without _POSIX_THREADS.  */
+#define _POSIX_TIMEOUTS	-1
+
 /* The `spawn' function family is supported.  */
 #define _POSIX_SPAWN	200112L
 
+/* We do not have POSIX timers, but could in future without ABI change.  */
+#define _POSIX_TIMERS	0
+
+/* The barrier functions are not available.  */
+#define _POSIX_BARRIERS	-1
+
+/* POSIX message queues could be available in future.  */
+#define	_POSIX_MESSAGE_PASSING	0
+
+/* Thread process-shared synchronization is not supported.  */
+#define _POSIX_THREAD_PROCESS_SHARED	-1
+
+/* The monotonic clock might be available.  */
+#define _POSIX_MONOTONIC_CLOCK	0
+
+/* The clock selection interfaces are available.  */
+#define _POSIX_CLOCK_SELECTION	200112L
+
+/* Advisory information interfaces could be available in future.  */
+#define _POSIX_ADVISORY_INFO	0
+
+/* IPv6 support is available.  */
+#define _POSIX_IPV6	200112L
+
+/* Raw socket support is available.  */
+#define _POSIX_RAW_SOCKETS	200112L
+
+/* We have at least one terminal.  */
+#define _POSIX2_CHAR_TERM	200112L
+
+/* Neither process nor thread sporadic server interfaces is available.  */
+#define _POSIX_SPORADIC_SERVER	-1
+#define _POSIX_THREAD_SPORADIC_SERVER	-1
+
+/* trace.h is not available.  */
+#define _POSIX_TRACE	-1
+#define _POSIX_TRACE_EVENT_FILTER	-1
+#define _POSIX_TRACE_INHERIT	-1
+#define _POSIX_TRACE_LOG	-1
+
+/* Typed memory objects are not available.  */
+#define _POSIX_TYPED_MEMORY_OBJECTS	-1
+
+/* No support for priority inheritance or protection so far.  */
+#define _POSIX_THREAD_PRIO_INHERIT	-1
+#define _POSIX_THREAD_PRIO_PROTECT	-1
+
+
 #endif /* bits/posix_opt.h */