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Diffstat (limited to 'libpthread/nptl/sysdeps/pthread/pthread_sigmask.c')
-rw-r--r--libpthread/nptl/sysdeps/pthread/pthread_sigmask.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/pthread/pthread_sigmask.c b/libpthread/nptl/sysdeps/pthread/pthread_sigmask.c
new file mode 100644
index 000000000..0d12fe6bf
--- /dev/null
+++ b/libpthread/nptl/sysdeps/pthread/pthread_sigmask.c
@@ -0,0 +1,58 @@
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ The GNU C Library 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 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <signal.h>
+#include <pthreadP.h>
+#include <sysdep.h>
+
+
+int
+pthread_sigmask (how, newmask, oldmask)
+ int how;
+ const sigset_t *newmask;
+ sigset_t *oldmask;
+{
+ sigset_t local_newmask;
+
+ /* The only thing we have to make sure here is that SIGCANCEL and
+ SIGSETXID is not blocked. */
+ if (newmask != NULL
+ && (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0)
+ || __builtin_expect (__sigismember (newmask, SIGSETXID), 0)))
+ {
+ local_newmask = *newmask;
+ __sigdelset (&local_newmask, SIGCANCEL);
+ __sigdelset (&local_newmask, SIGSETXID);
+ newmask = &local_newmask;
+ }
+
+#ifdef INTERNAL_SYSCALL
+ /* We know that realtime signals are available if NPTL is used. */
+ INTERNAL_SYSCALL_DECL (err);
+ int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask,
+ oldmask, _NSIG / 8);
+
+ return (INTERNAL_SYSCALL_ERROR_P (result, err)
+ ? INTERNAL_SYSCALL_ERRNO (result, err)
+ : 0);
+#else
+ return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0;
+#endif
+}