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-rw-r--r--sysdeps/mach/hurd/sigprocmask.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/sigprocmask.c b/sysdeps/mach/hurd/sigprocmask.c
new file mode 100644
index 0000000000..bae3266708
--- /dev/null
+++ b/sysdeps/mach/hurd/sigprocmask.c
@@ -0,0 +1,87 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <signal.h>
+#include <hurd.h>
+#include <hurd/signal.h>
+#include <hurd/msg.h>
+
+
+/* If SET is not NULL, modify the current set of blocked signals
+ according to HOW, which may be SIG_BLOCK, SIG_UNBLOCK or SIG_SETMASK.
+ If OSET is not NULL, store the old set of blocked signals in *OSET. */
+int
+DEFUN(__sigprocmask, (how, set, oset),
+ int how AND CONST sigset_t *set AND sigset_t *oset)
+{
+ struct hurd_sigstate *ss;
+ sigset_t old, new;
+ sigset_t pending;
+
+ if (set != NULL)
+ new = *set;
+
+ ss = _hurd_self_sigstate ();
+
+ __spin_lock (&ss->lock);
+
+ old = ss->blocked;
+
+ if (set != NULL)
+ {
+ switch (how)
+ {
+ case SIG_BLOCK:
+ ss->blocked |= new;
+ break;
+
+ case SIG_UNBLOCK:
+ ss->blocked &= ~new;
+ break;
+
+ case SIG_SETMASK:
+ ss->blocked = new;
+ break;
+
+ default:
+ __spin_unlock (&ss->lock);
+ errno = EINVAL;
+ return -1;
+ }
+
+ ss->blocked &= ~_SIG_CANT_MASK;
+ }
+
+ pending = ss->pending & ~ss->blocked;
+
+ __spin_unlock (&ss->lock);
+
+ if (oset != NULL)
+ *oset = old;
+
+ if (pending)
+ /* Send a message to the signal thread so it
+ will wake up and check for pending signals. */
+ __msg_sig_post (_hurd_msgport, 0, __mach_task_self ());
+
+ return 0;
+}
+
+weak_alias (__sigprocmask, sigprocmask)