1 files changed, 125 insertions, 0 deletions
diff --git a/tests/zfs-tests/cmd/file/randfree_file.c b/tests/zfs-tests/cmd/file/randfree_file.c
new file mode 100644
index 000000000..e00780cd2
--- /dev/null
+++ b/tests/zfs-tests/cmd/file/randfree_file.c
@@ -0,0 +1,125 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (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 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ * Copyright (c) 2012 by Delphix. All rights reserved.
+ */
+
+#include "file_common.h"
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <linux/falloc.h>
+
+/*
+ * Create a file with assigned size and then free the specified
+ * section of the file
+ */
+
+static void usage(char *progname);
+
+static void
+usage(char *progname)
+{
+	(void) fprintf(stderr,
+	    "usage: %s [-l filesize] [-s start-offset]"
+	    "[-n section-len] filename\n", progname);
+	exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+	char *filename = NULL;
+	char *buf = NULL;
+	size_t filesize = 0;
+	off_t start_off = 0;
+	off_t off_len = 0;
+	int  fd, ch;
+	mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
+
+	while ((ch = getopt(argc, argv, "l:s:n:")) != EOF) {
+		switch (ch) {
+		case 'l':
+			filesize = atoll(optarg);
+			break;
+		case 's':
+			start_off = atoll(optarg);
+			break;
+		case 'n':
+			off_len = atoll(optarg);
+			break;
+		default:
+			usage(argv[0]);
+			break;
+		}
+	}
+
+	if (optind == argc - 1)
+		filename = argv[optind];
+	else
+		usage(argv[0]);
+
+	if ((fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, mode)) < 0) {
+		perror("open");
+		return (1);
+	}
+
+	buf = (char *)calloc(1, filesize);
+	if (buf == NULL) {
+		perror("write");
+		close(fd);
+		return (1);
+	}
+	memset(buf, 'c', filesize);
+
+	if (write(fd, buf, filesize) < filesize) {
+		free(buf);
+		perror("write");
+		close(fd);
+		return (1);
+	}
+
+	free(buf);
+
+#if defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE)
+	if (fallocate(fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
+	    start_off, off_len) < 0) {
+		perror("fallocate");
+		close(fd);
+		return (1);
+	}
+#else /* !(defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE)) */
+	{
+		perror("FALLOC_FL_PUNCH_HOLE unsupported");
+		close(fd);
+		return (1);
+	}
+#endif /* defined(FALLOC_FL_PUNCH_HOLE) && defined(FALLOC_FL_KEEP_SIZE) */
+	close(fd);
+	return (0);
+}