2008-03-01 Neal H. Walfield <neal@gnu.org>

	Add signal implementation.
	* Makefile.am (SYSDEP_PATH): Add $(srcdir)/signal.
	(libpthread_a_SOURCES): Add pt-mutex-transfer-np.c, kill.c,
	killpg.c, pt-kill-siginfo-np.c, raise.c, sigaction.c, sigaddset.c,
	sigaltstack.c, sigdelset.c, sigemptyset.c, sigfillset.c,
	sig-internal.c, sig-internal.h, siginterrupt.c, sigismember.c,
	signal.c, signal-dispatch.c, signal.h, sigpending.c,
	sigprocmask.c, sigsuspend.c, sigtimedwait.c, sigwait.c,
	sigwaiter.c, sigwaitinfo.c, signal-dispatch-lowlevel.c, and
	sigprocmask.c.
	* headers.m4: Link libpthread/signal/signal.h into ../include.
	* sysdeps/generic/pt-mutex-transfer-np.c: New file.
        * signal/README: New file.
        * signal/TODO: Likewise.
        * signal/kill.c: Likewise.
        * signal/pt-kill-siginfo-np.c: Likewise.
        * signal/sig-internal.c: Likewise.
        * signal/sig-internal.h: Likewise.
        * signal/sigaction.c: Likewise.
        * signal/sigaltstack.c: Likewise.
        * signal/signal-dispatch.c: Likewise.
        * signal/signal.h: Likewise.
        * signal/sigpending.c: Likewise.
        * signal/sigsuspend.c: Likewise.
        * signal/sigtimedwait.c: Likewise.
        * signal/sigwaiter.c: Likewise.
        * signal/sigwaitinfo.c: Likewise.
	* sysdeps/l4/hurd/sig-sysdep.h: Likewise.
	* sysdeps/l4/hurd/sigprocmask.c: Likewise.
	* sysdeps/generic/killpg.c: Likewise.
	* sysdeps/generic/pt-kill.c: Likewise.
	* sysdeps/generic/raise.c: Likewise.
	* sysdeps/generic/sigaddset.c: Likewise.
	* sysdeps/generic/sigdelset.c: Likewise.
	* sysdeps/generic/sigemptyset.c: Likewise.
	* sysdeps/generic/sigfillset.c: Likewise.
	* sysdeps/generic/siginterrupt.c: Likewise.
	* sysdeps/generic/sigismember.c: Likewise.
	* sysdeps/generic/signal.c: Likewise.
	* sysdeps/generic/sigwait.c: Likewise.
	* sysdeps/l4/hurd/ia32/signal-dispatch-lowlevel.c: Likewise.
	* sysdeps/l4/hurd/pt-sysdep.c (sigprocmask): Remove function.
	* sysdeps/l4/hurd/pt-sigstate.c (__pthread_sigstate): Implement
	it.
	* sysdeps/l4/hurd/pt-sigstate-init.c: Include <sig-internal.h>.
	(__pthread_sigstate_init): Initialize THREAD->SS.
	* sysdeps/l4/hurd/pt-kill.c: Remove file.
	* pthread/pt-internal.h: Include <sig-internal.h>.
	(PTHREAD_SIGNAL_MEMBERS) [! PTHREAD_SIGNAL_MEMBERS]: Define.
	(struct __pthread): Add PTHREAD_SIGNAL_MEMBERS.
	* pthread/pt-self.c (pthread_self): Assert that SELF is not NULL.

12 files changed, 432 insertions, 0 deletions

diff --git a/sysdeps/generic/killpg.c b/sysdeps/generic/killpg.c
new file mode 100644
index 0000000..7f7ed87
--- /dev/null
+++ b/sysdeps/generic/killpg.c
@@ -0,0 +1,27 @@
+/* killpg.c - Generic killpg implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+killpg (pid_t pid, int sig)
+{
+  return kill (-pid, sig);
+}
diff --git a/sysdeps/generic/pt-kill.c b/sysdeps/generic/pt-kill.c
new file mode 100644
index 0000000..0dfac34
--- /dev/null
+++ b/sysdeps/generic/pt-kill.c
@@ -0,0 +1,32 @@
+/* pthread-kill.c - Generic pthread-kill implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+pthread_kill (pthread_t tid, int signo)
+{
+  siginfo_t si;
+  memset (&si, 0, sizeof (si));
+  si.si_signo = signo;
+
+  return pthread_kill_siginfo_np (tid, si);
+}
+
diff --git a/sysdeps/generic/pt-mutex-transfer-np.c b/sysdeps/generic/pt-mutex-transfer-np.c
new file mode 100644
index 0000000..bcb809d
--- /dev/null
+++ b/sysdeps/generic/pt-mutex-transfer-np.c
@@ -0,0 +1,54 @@
+/* Transfer ownership of a mutex.  Generic version.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_mutex_transfer_np (struct __pthread_mutex *mutex, pthread_t tid)
+{
+  assert (mutex->owner == _pthread_self ());
+
+  struct __pthread *thread = __pthread_getid (tid);
+  if (! thread)
+    return ESRCH;
+
+  if (thread == _pthread_self ())
+    return 0;
+
+  if (mutex->attr && mutex->attr->mutex_type == PTHREAD_MUTEX_ERRORCHECK)
+    {
+
+      if (mutex->owner != _pthread_self ())
+	return EPERM;
+
+      mutex->owner = thread;
+    }
+
+#ifndef NDEBUG
+  mutex->owner = thread;
+#endif
+
+  return 0;
+}
+
+strong_alias (__pthread_mutex_transfer_np, pthread_mutex_transfer_np)
diff --git a/sysdeps/generic/raise.c b/sysdeps/generic/raise.c
new file mode 100644
index 0000000..410f557
--- /dev/null
+++ b/sysdeps/generic/raise.c
@@ -0,0 +1,41 @@
+/* raise.c - Generic raise implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+raise (int signo)
+{
+  /* According to POSIX, if we implement threads (and we do), then
+     "the effect of the raise() function shall be equivalent to
+     calling: pthread_kill(pthread_self(), sig);"  */
+
+debug (0, "");
+  int err = pthread_kill (pthread_self (), signo);
+debug (0, "");
+  if (err)
+    {
+      errno = err;
+      return -1;
+    }
+
+  return 0;
+}
+
diff --git a/sysdeps/generic/sigaddset.c b/sysdeps/generic/sigaddset.c
new file mode 100644
index 0000000..14edb71
--- /dev/null
+++ b/sysdeps/generic/sigaddset.c
@@ -0,0 +1,35 @@
+/* sigaddset.c - Generic sigaddset implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+sigaddset (sigset_t *sigset, int signo)
+{
+  if (signo <= 0 || signo >= NSIG)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  *sigset |= sigmask (signo);
+  return 0;
+}
+
diff --git a/sysdeps/generic/sigdelset.c b/sysdeps/generic/sigdelset.c
new file mode 100644
index 0000000..5456467
--- /dev/null
+++ b/sysdeps/generic/sigdelset.c
@@ -0,0 +1,35 @@
+/* sigdelset.c - Generic sigdelset implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+sigdelset (sigset_t *sigset, int signo)
+{
+  if (signo <= 0 || signo >= NSIG)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  *sigset &= ~sigmask (signo);
+  return 0;
+}
+
diff --git a/sysdeps/generic/sigemptyset.c b/sysdeps/generic/sigemptyset.c
new file mode 100644
index 0000000..690c15b
--- /dev/null
+++ b/sysdeps/generic/sigemptyset.c
@@ -0,0 +1,29 @@
+/* sigemptyset.c - Generic sigemptyset implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <signal.h>
+
+int
+sigemptyset (sigset_t *sigset)
+{
+  *sigset = 0;
+  return 0;
+}
+
diff --git a/sysdeps/generic/sigfillset.c b/sysdeps/generic/sigfillset.c
new file mode 100644
index 0000000..f0ac078
--- /dev/null
+++ b/sysdeps/generic/sigfillset.c
@@ -0,0 +1,29 @@
+/* sigfillset.c - Generic sigfillset implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <signal.h>
+
+int
+sigfillset (sigset_t *sigset)
+{
+  *sigset = (1ULL << (NSIG - 1)) - 1;
+  return 0;
+}
+
diff --git a/sysdeps/generic/siginterrupt.c b/sysdeps/generic/siginterrupt.c
new file mode 100644
index 0000000..0899efb
--- /dev/null
+++ b/sysdeps/generic/siginterrupt.c
@@ -0,0 +1,36 @@
+/* siginterrupt.c - Generic siginterrupt implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+siginterrupt (int sig, int flag)
+{
+  int ret;
+  struct sigaction act;
+
+  sigaction (sig, NULL, &act);
+  if (flag)
+    act.sa_flags &= ~SA_RESTART;
+  else
+    act.sa_flags |= SA_RESTART;
+  ret = sigaction(sig, &act, NULL);
+  return ret;
+}
diff --git a/sysdeps/generic/sigismember.c b/sysdeps/generic/sigismember.c
new file mode 100644
index 0000000..b3d65c9
--- /dev/null
+++ b/sysdeps/generic/sigismember.c
@@ -0,0 +1,36 @@
+/* sigismember.c - Generic sigismember implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+sigismember (const sigset_t *sigset, int signo)
+{
+  if (signo <= 0 || signo >= NSIG)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  if (*sigset & sigmask (signo))
+    return 1;
+  else
+    return 0;
+}
diff --git a/sysdeps/generic/signal.c b/sysdeps/generic/signal.c
new file mode 100644
index 0000000..7555d0a
--- /dev/null
+++ b/sysdeps/generic/signal.c
@@ -0,0 +1,44 @@
+/* signal.c - Generic signal implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+void (*signal (int sig, void (*handler)(int)))(int)
+{
+  struct sigaction sa;
+
+  sa.sa_handler = handler;
+  sa.sa_flags = SA_RESTART;
+
+  if (sigemptyset (&sa.sa_mask) < 0
+      || sigaddset (&sa.sa_mask, sig) < 0)
+    return SIG_ERR;
+
+  struct sigaction osa;
+  if (sigaction (sig, &sa, &osa) < 0)
+    return SIG_ERR;
+
+  return osa.sa_handler;
+}
+
+void (*bsd_signal (int sig, void (*func)(int)))(int)
+{
+  return signal (sig, func);
+}
diff --git a/sysdeps/generic/sigwait.c b/sysdeps/generic/sigwait.c
new file mode 100644
index 0000000..7d10bf8
--- /dev/null
+++ b/sysdeps/generic/sigwait.c
@@ -0,0 +1,34 @@
+/* sigwait.c - Generic sigwait implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "sig-internal.h"
+
+int
+sigwait (const sigset_t *restrict set, int *restrict signo)
+{
+  siginfo_t info;
+
+  if (sigwaitinfo (set, &info) < 0)
+    return -1;
+
+  *signo = info.si_signo;
+  return 0;
+}
+