1 files changed, 62 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/sys/common/ftruncate.c b/usr/src/lib/libbc/libc/sys/common/ftruncate.c
new file mode 100644
index 0000000000..ab66775508
--- /dev/null
+++ b/usr/src/lib/libbc/libc/sys/common/ftruncate.c
@@ -0,0 +1,62 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 1999 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <syscall.h>
+#include <sys/types.h>
+
+/* The following are from SVR4 sys/fcntl.h */
+
+#define F_FREESP 11	/* Free file space */
+#define F_WRLCK	 02	/* Write Lock */
+
+/* lock structure from SVR4. */
+struct fl {
+	short l_type;
+	short l_whence;
+	off_t l_start;
+	off_t l_len;
+	long  l_sysid;
+	pid_t l_pid;
+	long  pad[4];
+};
+
+int ftruncate(int fd, off_t length)
+{
+
+	struct fl lck;
+
+	lck.l_whence = 0;	/* offset l_start from beginning of file */
+	lck.l_start = length;	
+	lck.l_type = F_WRLCK;	/* setting a write lock */
+	lck.l_len = 0L;
+
+	if (_syscall(SYS_fcntl, fd, F_FREESP, (int)&lck) == -1)
+		return (-1);
+	else 
+		return (0);
+}