Fixes from Jeremy Allison and Terry Lambert for pthreads:

specifically:
uthread_accept.c: Fix for inherited socket not getting correct entry in
                  pthread flags.
uthread_create.c: Fix to allow pthread_t pointer return to be null if
                  caller doesn't care about return.
uthread_fd.c: Fix for return codes to be placed into correct errno.
uthread_init.c: Changes to make gcc-2.8 thread aware for exception stack
                frames (WARNING: This is #ifdef'ed out by default and is
		different from the Cygnus egcs fix).
uthread_ioctl.c: Fix for blocking/non-blocking ioctl.
uthread_kern.c: Signal handling fixes (only one case left to fix,
                that of an externally sent SIGSEGV and friends -
		a fairly unusual case).
uthread_write.c: Fix for lock of fd - ask for write lock, not read/write.
uthread_writev.c: Fix for lock of fd - ask for write lock, not read/write.

Pthreads now works well enough to run the LDAP and ACAPD(with the gcc 2.8 fix)
sample implementations.

5 files changed, 96 insertions, 9 deletions

diff --git a/lib/libpthread/thread/thr_create.c b/lib/libpthread/thread/thr_create.c
index e4925a9..398ff21 100644
--- a/lib/libpthread/thread/thr_create.c
+++ b/lib/libpthread/thread/thr_create.c
@@ -199,7 +199,8 @@ _thread_create(pthread_t * thread, const pthread_attr_t * attr,
 			_thread_link_list = new_thread;
 
 			/* Return a pointer to the thread structure: */
-			(*thread) = new_thread;
+			if(thread)
+				(*thread) = new_thread;
 
 			/* Check if a parent thread was specified: */
 			if (parent != NULL) {
diff --git a/lib/libpthread/thread/thr_init.c b/lib/libpthread/thread/thr_init.c
index 5833cdf..78967f4 100644
--- a/lib/libpthread/thread/thr_init.c
+++ b/lib/libpthread/thread/thr_init.c
@@ -46,6 +46,31 @@
 #include "pthread_private.h"
 extern int _thread_autoinit_dummy_decl;
 
+#ifdef GCC_2_8_MADE_THREAD_AWARE
+typedef void *** (*dynamic_handler_allocator)();
+extern void __set_dynamic_handler_allocator(dynamic_handler_allocator);
+
+static pthread_key_t except_head_key;
+
+typedef struct {
+  void **__dynamic_handler_chain;
+  void *top_elt[2];
+} except_struct;
+
+static void ***dynamic_allocator_handler_fn()
+{
+	except_struct *dh = (except_struct *)pthread_getspecific(except_head_key);
+
+	if(dh == NULL) {
+		dh = (except_struct *)malloc( sizeof(except_struct) );
+		memset(dh, '\0', sizeof(except_struct));
+		dh->__dynamic_handler_chain= dh->top_elt;
+		pthread_setspecific(except_head_key, (void *)dh);
+	}
+	return &dh->__dynamic_handler_chain;
+}
+#endif /* GCC_2_8_MADE_THREAD_AWARE */
+
 /*
  * Threaded process initialization
  */
@@ -55,7 +80,6 @@ _thread_init(void)
 	int             flags;
 	int             i;
 	struct sigaction act;
-
 	/* Ensure that the auto-initialization routine is linked in: */
 	_thread_autoinit_dummy_decl = 1;
 
@@ -200,6 +224,16 @@ _thread_init(void)
 			}
 		}
 	}
+
+#ifdef GCC_2_8_MADE_THREAD_AWARE
+	/* Create the thread-specific data for the exception linked list. */
+	if(pthread_key_create(&except_head_key, NULL) != 0)
+        	PANIC("Failed to create thread specific execption head");
+
+	/* Setup the gcc exception handler per thread. */
+	__set_dynamic_handler_allocator( dynamic_allocator_handler_fn );
+#endif /* GCC_2_8_MADE_THREAD_AWARE */
+
 	return;
 }
 
diff --git a/lib/libpthread/thread/thr_kern.c b/lib/libpthread/thread/thr_kern.c
index ba8e250..925d5bf 100644
--- a/lib/libpthread/thread/thr_kern.c
+++ b/lib/libpthread/thread/thr_kern.c
@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $Id: uthread_kern.c,v 1.5 1997/04/01 22:51:48 jb Exp $
  *
  */
 #include <errno.h>
@@ -949,6 +949,58 @@ _thread_signal(pthread_t pthread, int sig)
 			_thread_sys_sigreturn(&pthread->saved_sigcontext);
 			break;
 
+		/*
+		 * The following signals should terminate the
+		 * process. Do this by clearing the signal action
+		 * and then re-throwing the signal.
+		 */
+		case SIGHUP:
+		case SIGINT:
+		case SIGPIPE:
+		case SIGALRM:
+		case SIGTERM:
+		case SIGXCPU:
+		case SIGXFSZ:
+		case SIGVTALRM:
+		case SIGUSR1:
+		case SIGUSR2:
+		/* These signals stop the process. Also re-throw them. */
+		case SIGTSTP:
+		case SIGTTIN:
+		case SIGTTOU:
+                        /* Clear the signal action: */
+                        sigfillset(&act.sa_mask);
+                        act.sa_handler = SIG_DFL;
+                        act.sa_flags = SA_RESTART;
+                        _thread_sys_sigaction(sig, &act, NULL);
+			/* Re-throw to ourselves. */
+                        kill(getpid(), sig);
+			break;
+
+		case SIGCONT:
+			/*
+			 * If we get this it means that we were
+			 * probably stopped and then continued.
+			 * Reset the handler for the SIGTSTP, SIGTTIN
+			 * and SIGTTOU signals.
+			 */
+
+                	sigfillset(&act.sa_mask);
+	                act.sa_handler = (void (*) ()) _thread_sig_handler;
+			act.sa_flags = SA_RESTART;
+
+                        /* Initialise the signals for default handling: */
+                        if (_thread_sys_sigaction(SIGTSTP, &act, NULL) != 0) {
+                                PANIC("Cannot initialise SIGTSTP signal handler");
+                        }
+                        if (_thread_sys_sigaction(SIGTTIN, &act, NULL) != 0) {
+                                PANIC("Cannot initialise SIGTTIN signal handler");
+                        }
+                        if (_thread_sys_sigaction(SIGTTOU, &act, NULL) != 0) {
+                                PANIC("Cannot initialise SIGTTOU signal handler");
+                        }
+			break;
+
 		/* Default processing for other signals: */
 		default:
 			/*
diff --git a/lib/libpthread/thread/thr_write.c b/lib/libpthread/thread/thr_write.c
index eab105d..e86e71b 100644
--- a/lib/libpthread/thread/thr_write.c
+++ b/lib/libpthread/thread/thr_write.c
@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $Id: uthread_write.c,v 1.3 1997/04/01 22:44:17 jb Exp $
  *
  */
 #include <sys/types.h>
@@ -47,8 +47,8 @@ write(int fd, const void *buf, size_t nbytes)
 	int	ret;
 	int	status;
 
-	/* Lock the file descriptor for read and write: */
-	if ((ret = _thread_fd_lock(fd, FD_RDWR, NULL,
+	/* Lock the file descriptor for write: */
+	if ((ret = _thread_fd_lock(fd, FD_WRITE, NULL,
 	    __FILE__, __LINE__)) == 0) {
 		/* Perform a non-blocking write syscall: */
 		while ((ret = _thread_sys_write(fd, buf, nbytes)) < 0) {
diff --git a/lib/libpthread/thread/thr_writev.c b/lib/libpthread/thread/thr_writev.c
index 5ad1ce9..56e1872 100644
--- a/lib/libpthread/thread/thr_writev.c
+++ b/lib/libpthread/thread/thr_writev.c
@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $Id: uthread_writev.c,v 1.3 1997/04/01 22:44:18 jb Exp $
  *
  */
 #include <sys/types.h>
@@ -47,8 +47,8 @@ writev(int fd, const struct iovec * iov, int iovcnt)
 	int	ret;
 	int	status;
 
-	/* Lock the file descriptor for read and write: */
-	if ((ret = _thread_fd_lock(fd, FD_RDWR, NULL,
+	/* Lock the file descriptor for write: */
+	if ((ret = _thread_fd_lock(fd, FD_WRITE, NULL,
 	    __FILE__, __LINE__)) == 0) {
 		/* Perform a non-blocking writev syscall: */
 		while ((ret = _thread_sys_writev(fd, iov, iovcnt)) < 0) {