- disentangle REALTIME from ADVANCED_REALTIME (Peter S. Mazinger)

extra/Configs/Config.in

@@ -802,8 +802,6 @@ config UCLIBC_SV4_DEPRECATED
 config UCLIBC_HAS_REALTIME
 	bool "Realtime-related family of SUSv functions"
 	default y
-	# glitch in mq_{send,receive} currently forces this on
-	select UCLIBC_HAS_ADVANCED_REALTIME
 	help
 	  These functions are part of the Timers option and need not
 	  be available on all implementations.

librt/mq_receive.c

@@ -6,16 +6,13 @@
 #include <stddef.h>
 #include <sys/syscall.h>
 #include <mqueue.h>
-#warning FIXME: hard dependency on ADVANCED REALTIME feature
 
-librt_hidden_proto(mq_timedreceive)
 #ifdef __NR_mq_timedreceive
 #define __NR___syscall_mq_timedreceive __NR_mq_timedreceive
-static __inline__ _syscall5(int, __syscall_mq_timedreceive, int, mqdes,
-			char *, msg_ptr, size_t, msg_len, unsigned int *,
-			msg_prio, const void *, abs_timeout);
-#endif
-
+static _syscall5(int, __syscall_mq_timedreceive, int, mqdes,
+		 char *, msg_ptr, size_t, msg_len, unsigned int *,
+		 msg_prio, const void *, abs_timeout)
+# if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
 /*
  * Receive the oldest from highest priority messages.
  * Stop waiting if abs_timeout expires.
@@ -24,20 +21,31 @@ ssize_t mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len,
 			unsigned int *msg_prio,
 			const struct timespec *abs_timeout)
 {
-#ifdef __NR_mq_timedreceive
 	return __syscall_mq_timedreceive(mqdes, msg_ptr, msg_len, msg_prio,
 					 abs_timeout);
-#else
-	errno = ENOSYS;
-	return -1;
-#endif
 }
-
-librt_hidden_def(mq_timedreceive)
+# endif
 
 /* Receive the oldest from highest priority messages */
 ssize_t mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len,
 		   unsigned int *msg_prio)
 {
-	return mq_timedreceive(mqdes, msg_ptr, msg_len, msg_prio, NULL);
+	return __syscall_mq_timedreceive(mqdes, msg_ptr, msg_len, msg_prio, NULL);
 }
+#elif defined __UCLIBC_HAS_STUBS__
+# if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
+ssize_t mq_timedreceive(mqd_t mqdes attribute_unused, char *msg_ptr attribute_unused,
+			size_t msg_len attribute_unused, unsigned int *msg_prio attribute_unused,
+			const struct timespec *abs_timeout attribute_unused)
+{
+	__set_errno(ENOSYS);
+	return -1;
+}
+# endif
+ssize_t mq_receive(mqd_t mqdes attribute_unused, char *msg_ptr attribute_unused,
+		   size_t msg_len attribute_unused, unsigned int *msg_prio attribute_unused)
+{
+	__set_errno(ENOSYS);
+	return -1;
+}
+#endif

librt/mq_send.c

@@ -6,16 +6,14 @@
 #include <stddef.h>
 #include <sys/syscall.h>
 #include <mqueue.h>
-#warning FIXME: hard dependency on ADVANCED REALTIME feature
 
-librt_hidden_proto(mq_timedsend)
 #ifdef __NR_mq_timedsend
 #define __NR___syscall_mq_timedsend __NR_mq_timedsend
-static __inline__ _syscall5(int, __syscall_mq_timedsend, int, mqdes,
-			const char *, msg_ptr, size_t, msg_len, unsigned int,
-			msg_prio, const void *, abs_timeout);
-#endif
+static _syscall5(int, __syscall_mq_timedsend, int, mqdes,
+		 const char *, msg_ptr, size_t, msg_len, unsigned int,
+		 msg_prio, const void *, abs_timeout);
 
+# if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
 /*
  * Add a message to queue. If O_NONBLOCK is set and queue is full, wait
  * for sufficient room in the queue until abs_timeout expires.
@@ -23,20 +21,31 @@ static __inline__ _syscall5(int, __syscall_mq_timedsend, int, mqdes,
 int mq_timedsend(mqd_t mqdes, const char *msg_ptr, size_t msg_len,
 		 unsigned int msg_prio, const struct timespec *abs_timeout)
 {
-#ifdef __NR_mq_timedsend
 	return __syscall_mq_timedsend(mqdes, msg_ptr, msg_len, msg_prio,
 				      abs_timeout);
-#else
-	errno = ENOSYS;
-	return -1;
-#endif
 }
-
-librt_hidden_def(mq_timedsend)
+# endif
 
 /* Add a message to queue */
 int mq_send(mqd_t mqdes, const char *msg_ptr, size_t msg_len,
 	    unsigned int msg_prio)
 {
-	return mq_timedsend(mqdes, msg_ptr, msg_len, msg_prio, NULL);
+	return __syscall_mq_timedsend(mqdes, msg_ptr, msg_len, msg_prio, NULL);
+}
+#elif defined __UCLIBC_HAS_STUBS__
+# if defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__
+int mq_timedsend(mqd_t mqdes attribute_unused, const char *msg_ptr attribute_unused,
+		 size_t msg_len attribute_unused, unsigned int msg_prio attribute_unused,
+		 const struct timespec *abs_timeout attribute_unused)
+{
+	__set_errno(ENOSYS);
+	return -1;
+}
+# endif
+int mq_send(mqd_t mqdes attribute_unused, const char *msg_ptr attribute_unused,
+	    size_t msg_len attribute_unused, unsigned int msg_prio attribute_unused)
+{
+	__set_errno(ENOSYS);
+	return -1;
 }
+#endif