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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /lib/sigprocmask.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'lib/sigprocmask.c')
-rw-r--r--lib/sigprocmask.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/lib/sigprocmask.c b/lib/sigprocmask.c
new file mode 100644
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--- /dev/null
+++ b/lib/sigprocmask.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 1997 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., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include "../include/sane/config.h"
+
+#include <errno.h>
+
+#ifndef HAVE_SIGPROCMASK
+
+#define sigprocmask SOMETHINGELSE
+#include <signal.h>
+#undef sigprocmask
+
+int
+sigprocmask (int how, int *new, int *old)
+{
+ int o, n = *new;
+
+/* FIXME: Get this working on Windows. Probably should move to
+ * POSIX sigaction API and emulate it before emulating this one.
+ */
+#ifndef WIN32
+ switch (how)
+ {
+ case 1: o = sigblock (n); break;
+ case 2: o = sigsetmask (sigblock (0) & ~n); break;
+ case 3: o = sigsetmask (n); break;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+ if (old)
+ *old = o;
+#endif
+ return 0;
+}
+
+#endif /* !HAVE_SIGPROCMASK */