Import glibc-mainline for 2006-08-16

git-svn-id: svn://svn.eglibc.org/fsf/trunk@4 7b3dc134-2b1b-0410-93df-9e9f96275f8d

1 files changed, 57 insertions, 0 deletions

diff --git a/libc/sysdeps/posix/sigintr.c b/libc/sysdeps/posix/sigintr.c
new file mode 100644
index 000000000..ceac262e5
--- /dev/null
+++ b/libc/sysdeps/posix/sigintr.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 1992, 1994, 1996, 2002 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 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 <stddef.h>
+#include <signal.h>
+#include <errno.h>
+
+/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
+   (causing them to fail with EINTR); if INTERRUPT is zero, make system
+   calls be restarted after signal SIG.  */
+int
+siginterrupt (sig, interrupt)
+     int sig;
+     int interrupt;
+{
+#ifdef	SA_RESTART
+  extern sigset_t _sigintr attribute_hidden;	/* Defined in signal.c.  */
+  struct sigaction action;
+
+  if (__sigaction (sig, (struct sigaction *) NULL, &action) < 0)
+    return -1;
+
+  if (interrupt)
+    {
+      __sigaddset (&_sigintr, sig);
+      action.sa_flags &= ~SA_RESTART;
+    }
+  else
+    {
+      __sigdelset (&_sigintr, sig);
+      action.sa_flags |= SA_RESTART;
+    }
+
+  if (__sigaction (sig, &action, (struct sigaction *) NULL) < 0)
+    return -1;
+
+  return 0;
+#else
+  __set_errno (ENOSYS);
+  return -1;
+#endif
+}