Fix mq_receive, mq_send mq_timed* namespace (bug 18545).

mq_receive calls mq_timedreceive, and mq_send calls mq_timedsend.  But
mq_receive and mq_send were in POSIX by 1996, while mq_timed* were
added in the 2001 edition of POSIX.  This patch fixes this by making
mq_timed* into weak aliases for __mq_timed* and calling the
__mq_timed* names.

Tested for x86_64 and x86 (testsuite, and that disassembly of
installed shared libraries is unchanged by the patch).

	[BZ #18545]
	* rt/mq_timedreceive.c (mq_timedreceive): Rename to
	__mq_timedreceive and define as alias of __mq_timedreceive.  Use
	hidden_weak.
	* rt/mq_timedsend.c (mq_timedsend): Rename to __mq_timedsend and
	define as alias of __mq_timedsend.  Use hidden_weak.
	* sysdeps/unix/sysv/linux/syscalls.list (mq_timedsend): Use
	__mq_timedsend as strong name.
	(mq_timedreceive): Use __mq_timedreceive as strong name.
	* include/mqueue.h (__mq_timedsend): Declare.  Use hidden_proto.
	(__mq_timedreceive): Likewise.
	* sysdeps/unix/sysv/linux/mq_receive.c (mq_receive): Call
	__mq_timedreceive instead of mq_timedreceive.
	* sysdeps/unix/sysv/linux/mq_send.c (mq_send): Call __mq_timedsend
	instead of mq_timedsend.
	* conform/Makefile (test-xfail-UNIX98/mqueue.h/linknamespace):
	Remove variable.

9 files changed, 35 insertions, 10 deletions

diff --git a/ChangeLog b/ChangeLog
index 2ec139f..9e45c2e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,23 @@
 2015-06-17  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #18545]
+	* rt/mq_timedreceive.c (mq_timedreceive): Rename to
+	__mq_timedreceive and define as alias of __mq_timedreceive.  Use
+	hidden_weak.
+	* rt/mq_timedsend.c (mq_timedsend): Rename to __mq_timedsend and
+	define as alias of __mq_timedsend.  Use hidden_weak.
+	* sysdeps/unix/sysv/linux/syscalls.list (mq_timedsend): Use
+	__mq_timedsend as strong name.
+	(mq_timedreceive): Use __mq_timedreceive as strong name.
+	* include/mqueue.h (__mq_timedsend): Declare.  Use hidden_proto.
+	(__mq_timedreceive): Likewise.
+	* sysdeps/unix/sysv/linux/mq_receive.c (mq_receive): Call
+	__mq_timedreceive instead of mq_timedreceive.
+	* sysdeps/unix/sysv/linux/mq_send.c (mq_send): Call __mq_timedsend
+	instead of mq_timedsend.
+	* conform/Makefile (test-xfail-UNIX98/mqueue.h/linknamespace):
+	Remove variable.
+
 	* sysdeps/unix/make-syscalls.sh (emit_weak_aliases): Use
 	hidden_def and hidden_weak instead of libc_hidden_def and
 	libc_hidden_weak.
diff --git a/NEWS b/NEWS
index 59586d4..004d769 100644
--- a/NEWS
+++ b/NEWS
@@ -22,7 +22,7 @@ Version 2.22
   18324, 18333, 18346, 18397, 18409, 18410, 18412, 18418, 18422, 18434,
   18444, 18468, 18469, 18470, 18479, 18483, 18495, 18496, 18497, 18498,
   18507, 18512, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
-  18533, 18534, 18536, 18539, 18540, 18542, 18544.
+  18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545.
 
 * Cache information can be queried via sysconf() function on s390 e.g. with
   _SC_LEVEL1_ICACHE_SIZE as argument.
diff --git a/conform/Makefile b/conform/Makefile
index 0b06103..fa25aa8 100644
--- a/conform/Makefile
+++ b/conform/Makefile
@@ -347,4 +347,3 @@ test-xfail-XOPEN2K8/ndbm.h/linknamespace = yes
 test-xfail-XPG3/unistd.h/linknamespace = yes
 test-xfail-XPG4/unistd.h/linknamespace = yes
 test-xfail-POSIX/mqueue.h/linknamespace = yes
-test-xfail-UNIX98/mqueue.h/linknamespace = yes
diff --git a/include/mqueue.h b/include/mqueue.h
index eb47b9b..3c66f17 100644
--- a/include/mqueue.h
+++ b/include/mqueue.h
@@ -3,7 +3,11 @@
 #ifndef _ISOMAC
 # if IS_IN (librt)
 hidden_proto (mq_timedsend)
+extern __typeof (mq_timedsend) __mq_timedsend __nonnull ((2, 5));
+hidden_proto (__mq_timedsend)
 hidden_proto (mq_timedreceive)
+extern __typeof (mq_timedreceive) __mq_timedreceive __nonnull ((2, 5));
+hidden_proto (__mq_timedreceive)
 hidden_proto (mq_setattr)
 # endif
 #endif
diff --git a/rt/mq_timedreceive.c b/rt/mq_timedreceive.c
index b6c1d2a..c476c68 100644
--- a/rt/mq_timedreceive.c
+++ b/rt/mq_timedreceive.c
@@ -21,12 +21,14 @@
 /* Receive the oldest from highest priority messages in message queue
    MQDES, stop waiting if ABS_TIMEOUT expires.  */
 ssize_t
-mq_timedreceive (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
+__mq_timedreceive (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
 		 unsigned int *__restrict msg_prio,
 		 const struct timespec *__restrict abs_timeout)
 {
   __set_errno (ENOSYS);
   return -1;
 }
-hidden_def (mq_timedreceive)
+hidden_def (__mq_timedreceive)
+weak_alias (__mq_timedreceive, mq_timedreceive)
+hidden_weak (mq_timedreceive)
 stub_warning (mq_timedreceive)
diff --git a/rt/mq_timedsend.c b/rt/mq_timedsend.c
index ce76e0f..30caaf1 100644
--- a/rt/mq_timedsend.c
+++ b/rt/mq_timedsend.c
@@ -21,11 +21,13 @@
 /* Add message pointed by MSG_PTR to message queue MQDES, stop blocking
    on full message queue if ABS_TIMEOUT expires.  */
 int
-mq_timedsend (mqd_t mqdes, const char *msg_ptr, size_t msg_len,
+__mq_timedsend (mqd_t mqdes, const char *msg_ptr, size_t msg_len,
 	      unsigned int msg_prio, const struct timespec *abs_timeout)
 {
   __set_errno (ENOSYS);
   return -1;
 }
-hidden_def (mq_timedsend)
+hidden_def (__mq_timedsend)
+weak_alias (__mq_timedsend, mq_timedsend)
+hidden_weak (mq_timedsend)
 stub_warning (mq_timedsend)
diff --git a/sysdeps/unix/sysv/linux/mq_receive.c b/sysdeps/unix/sysv/linux/mq_receive.c
index 3c41ecf..ff73d0a 100644
--- a/sysdeps/unix/sysv/linux/mq_receive.c
+++ b/sysdeps/unix/sysv/linux/mq_receive.c
@@ -28,7 +28,7 @@ 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 __mq_timedreceive (mqdes, msg_ptr, msg_len, msg_prio, NULL);
 }
 
 #else
diff --git a/sysdeps/unix/sysv/linux/mq_send.c b/sysdeps/unix/sysv/linux/mq_send.c
index 4022cf1..9013657 100644
--- a/sysdeps/unix/sysv/linux/mq_send.c
+++ b/sysdeps/unix/sysv/linux/mq_send.c
@@ -27,7 +27,7 @@ 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 __mq_timedsend (mqdes, msg_ptr, msg_len, msg_prio, NULL);
 }
 
 #else
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 09dd10d..ed5d38f 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -106,8 +106,8 @@ removexattr	-	removexattr	i:ss	removexattr
 lremovexattr	-	lremovexattr	i:ss	lremovexattr
 fremovexattr	-	fremovexattr	i:is	fremovexattr
 
-mq_timedsend	-	mq_timedsend	Ci:ipiip	mq_timedsend
-mq_timedreceive	-	mq_timedreceive	Ci:ipipp	mq_timedreceive
+mq_timedsend	-	mq_timedsend	Ci:ipiip	__mq_timedsend	mq_timedsend
+mq_timedreceive	-	mq_timedreceive	Ci:ipipp	__mq_timedreceive	mq_timedreceive
 mq_setattr	-	mq_getsetattr	i:ipp	mq_setattr
 
 timerfd_create	EXTRA	timerfd_create	i:ii	timerfd_create