_FD_LOCK/UNLOCK() is libpthread specific and not needed for librthread, so

isolate its usage to libpthread only and replace with generic non-static
mutex support in the one place it is needed:
 - remove _FD_LOCK/UNLOCK from lseek and ftruncate in libc and make the
   functions weak so that libpthread can override with its own new
   versions that do the locking.
 - remove _thread_fd_lock/unlock() weak functions from libc and adjust
   libpthread for the change.
 - add generic _thread_mutex_lock/unlock/destroy() weak functions in libc
   to support non-static mutexes in libc and add libpthread and librthread
   implementations for them. libc can utilize non-static mutexes via the
   new _MUTEX_LOCK/UNLOCK/DESTROY() macros. Actually these new macros can
   support both static and non-static mutexes but currently only using
   them for non-static.
 - make opendir/closedir/readdir/readdir_r/seekdir/telldir() thread-safe
   for both thread libraries by using a non-static mutex in the struct
   _dirdesc (typedef DIR), utilizing it in the *dir functions and remove
   remaining and incorrect _FD_LOCK/UNLOCK() use in libc.
 - add comments to both thread libraries to indicate libc depends on the
   current implementation of static mutex initialization. suggested by
   marc@
 - major bump libc and libpthread due to function removal, structure
   change and weak symbol conversions.
okay marc@, tedu@

6 files changed, 138 insertions, 9 deletions

diff --git a/lib/libpthread/uthread/Makefile.inc b/lib/libpthread/uthread/Makefile.inc
index 6ef4e88c344..3e814dd0500 100644
--- a/lib/libpthread/uthread/Makefile.inc
+++ b/lib/libpthread/uthread/Makefile.inc
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile.inc,v 1.19 2005/10/30 03:37:34 brad Exp $
+# $OpenBSD: Makefile.inc,v 1.20 2007/06/05 18:11:48 kurt Exp $
 # $FreeBSD: Makefile.inc,v 1.19 1999/08/28 00:03:19 peter Exp $
 
 # uthread sources
@@ -59,6 +59,7 @@ SRCS+= \
 	uthread_fstat.c \
 	uthread_fstatfs.c \
 	uthread_fsync.c \
+	uthread_ftruncate.c \
 	uthread_gc.c \
 	uthread_getdirentries.c \
 	uthread_getpeername.c \
@@ -75,6 +76,7 @@ SRCS+= \
 	uthread_kqueue.c \
 	uthread_kill.c \
 	uthread_listen.c \
+	uthread_lseek.c \
 	uthread_main_np.c \
 	uthread_mattr_init.c \
 	uthread_mattr_kind_np.c \
diff --git a/lib/libpthread/uthread/pthread_private.h b/lib/libpthread/uthread/pthread_private.h
index 5ccdde97165..d26fc50bf53 100644
--- a/lib/libpthread/uthread/pthread_private.h
+++ b/lib/libpthread/uthread/pthread_private.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pthread_private.h,v 1.66 2007/05/21 16:50:36 kurt Exp $	*/
+/*	$OpenBSD: pthread_private.h,v 1.67 2007/06/05 18:11:49 kurt Exp $	*/
 /*
  * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>.
  * All rights reserved.
@@ -491,8 +491,15 @@ enum pthread_state {
 
 
 /*
- * File descriptor locking definitions are defined in "thread_private.h"
+ * File descriptor locking definitions.
  */
+#define FD_READ		0x1
+#define FD_WRITE	0x2
+#define FD_RDWR		(FD_READ | FD_WRITE)
+#define FD_RDWR_CLOSE	(FD_RDWR | 0x4)
+
+#define _FD_LOCK(_fd,_type,_ts)	_thread_fd_lock(_fd, _type, _ts)
+#define _FD_UNLOCK(_fd,_type)	_thread_fd_unlock(_fd, _type)
 
 /*
  * File status flags struture - shared for dup'ed fd's
@@ -1148,6 +1155,8 @@ void    _thread_cleanupspecific(void);
 void	_thread_clear_pending(int, pthread_t);
 void	_thread_dump_data(const void *, int);
 void    _thread_dump_info(void);
+int	_thread_fd_lock(int, int, struct timespec *);
+void	_thread_fd_unlock(int, int);
 void    _thread_init(void);
 void	_thread_kern_lock(int);
 void    _thread_kern_sched(struct sigcontext *);
diff --git a/lib/libpthread/uthread/uthread_ftruncate.c b/lib/libpthread/uthread/uthread_ftruncate.c
new file mode 100644
index 00000000000..c29e2f090dc
--- /dev/null
+++ b/lib/libpthread/uthread/uthread_ftruncate.c
@@ -0,0 +1,57 @@
+/*	$OpenBSD: uthread_ftruncate.c,v 1.1 2007/06/05 18:11:49 kurt Exp $ */
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+
+register_t __syscall(quad_t, ...);
+
+/*
+ * This function provides 64-bit offset padding that
+ * is not supplied by GCC 1.X but is supplied by GCC 2.X.
+ */
+int
+ftruncate(int fd, off_t length)
+{
+	int retval;
+
+	if (_FD_LOCK(fd, FD_RDWR, NULL) != 0) {
+		retval = -1;
+	} else {
+		retval = __syscall((quad_t)SYS_ftruncate, fd, 0, length);
+		_FD_UNLOCK(fd, FD_RDWR);
+	}
+	return retval;
+}
+#endif
diff --git a/lib/libpthread/uthread/uthread_init.c b/lib/libpthread/uthread/uthread_init.c
index 55fed967e2d..93f7ec27ad6 100644
--- a/lib/libpthread/uthread/uthread_init.c
+++ b/lib/libpthread/uthread/uthread_init.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uthread_init.c,v 1.38 2007/05/21 16:50:36 kurt Exp $	*/
+/*	$OpenBSD: uthread_init.c,v 1.39 2007/06/05 18:11:49 kurt Exp $	*/
 /*
  * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>
  * All rights reserved.
@@ -130,8 +130,6 @@ static void *references[] = {
 	&write,
 	&writev,
 	/* libc thread-safe helper functions */
-	&_thread_fd_lock,
-	&_thread_fd_unlock,
 	&_thread_malloc_init,
 	&_thread_malloc_lock,
 	&_thread_malloc_unlock,
@@ -140,9 +138,14 @@ static void *references[] = {
 	&_thread_tag_lock,
 	&_thread_tag_unlock,
 	&_thread_tag_storage,
+	&_thread_mutex_lock,
+	&_thread_mutex_unlock,
+	&_thread_mutex_destroy,
 	&flockfile,
+	&ftruncate,
 	&ftrylockfile,
-	&funlockfile
+	&funlockfile,
+	&lseek
 };
 
 /*
diff --git a/lib/libpthread/uthread/uthread_lseek.c b/lib/libpthread/uthread/uthread_lseek.c
new file mode 100644
index 00000000000..152d707938b
--- /dev/null
+++ b/lib/libpthread/uthread/uthread_lseek.c
@@ -0,0 +1,56 @@
+/*	$OpenBSD: uthread_lseek.c,v 1.1 2007/06/05 18:11:49 kurt Exp $ */
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+
+off_t __syscall(quad_t, ...);
+
+/*
+ * This function provides 64-bit offset padding that
+ * is not supplied by GCC 1.X but is supplied by GCC 2.X.
+ */
+off_t
+lseek(int fd, off_t offset, int whence)
+{
+	off_t retval;
+
+	if (_FD_LOCK(fd, FD_RDWR, NULL) != 0) {
+		retval = -1;
+	} else {
+		retval = __syscall((quad_t)SYS_lseek, fd, 0, offset, whence);
+		_FD_UNLOCK(fd, FD_RDWR);
+	}
+	return retval;
+}
+#endif
diff --git a/lib/libpthread/uthread/uthread_mutex.c b/lib/libpthread/uthread/uthread_mutex.c
index a237d193070..f45a0f64616 100644
--- a/lib/libpthread/uthread/uthread_mutex.c
+++ b/lib/libpthread/uthread/uthread_mutex.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uthread_mutex.c,v 1.20 2007/05/01 18:16:38 kurt Exp $	*/
+/*	$OpenBSD: uthread_mutex.c,v 1.21 2007/06/05 18:11:49 kurt Exp $	*/
 /*
  * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
  * All rights reserved.
@@ -667,7 +667,9 @@ pthread_mutex_lock(pthread_mutex_t *mutex)
 
 	/*
 	 * If the mutex is statically initialized, perform the dynamic
-	 * initialization:
+	 * initialization. Note: _thread_mutex_lock() in libc requires
+	 * pthread_mutex_lock() to perform the mutex init when *mutex
+	 * is NULL.
 	 */
 	else if ((*mutex != NULL) || ((ret = init_static(mutex)) == 0))
 		ret = mutex_lock_common(mutex);