1 files changed, 86 insertions, 0 deletions
diff --git a/compat/lib.h b/compat/lib.h
new file mode 100644
index 00000000..b070ee40
--- /dev/null
+++ b/compat/lib.h
@@ -0,0 +1,86 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>
+ *  Copyright (C) 2002-2008  Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <signal.h>
+
+#ifndef min
+#define min(a,b)    ( (a)<(b) ? (a):(b) )
+#endif
+
+/* IO cancelation */
+extern volatile sig_atomic_t __io_canceled;
+
+static inline void io_init(void)
+{
+	__io_canceled = 0;
+}
+
+static inline void io_cancel(void)
+{
+	__io_canceled = 1;
+}
+
+/* Read exactly len bytes (Signal safe)*/
+static inline int read_n(int fd, char *buf, int len)
+{
+	register int t = 0, w;
+
+	while (!__io_canceled && len > 0) {
+		if ((w = read(fd, buf, len)) < 0) {
+			if (errno == EINTR || errno == EAGAIN)
+				continue;
+			return -1;
+		}
+		if (!w)
+			return 0;
+		len -= w;
+		buf += w;
+		t += w;
+	}
+
+	return t;
+}
+
+/* Write exactly len bytes (Signal safe)*/
+static inline int write_n(int fd, char *buf, int len)
+{
+	register int t = 0, w;
+
+	while (!__io_canceled && len > 0) {
+		if ((w = write(fd, buf, len)) < 0) {
+			if (errno == EINTR || errno == EAGAIN)
+				continue;
+			return -1;
+		}
+		if (!w)
+			return 0;
+		len -= w;
+		buf += w;
+		t += w;
+	}
+
+	return t;
+}