1 files changed, 104 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/tests/zfs-tests/cmd/truncate_test.c b/sys/contrib/openzfs/tests/zfs-tests/cmd/truncate_test.c
new file mode 100644
index 000000000000..0c97374db5cd
--- /dev/null
+++ b/sys/contrib/openzfs/tests/zfs-tests/cmd/truncate_test.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: CDDL-1.0
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source.  A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
+ * Copyright 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
+ */
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define	FSIZE	256*1024*1024
+
+static long	fsize = FSIZE;
+static int	errflag = 0;
+static char	*filename = NULL;
+static int	ftruncflag = 0;
+
+static void parse_options(int argc, char *argv[]);
+
+static void
+usage(char *execname)
+{
+	(void) fprintf(stderr,
+	    "usage: %s [-s filesize] [-f] /path/to/file\n", execname);
+	(void) exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+	int fd;
+
+	parse_options(argc, argv);
+
+	if (ftruncflag) {
+		fd = open(filename, O_RDWR|O_CREAT, 0666);
+		if (fd < 0) {
+			perror("open");
+			return (1);
+		}
+		if (ftruncate(fd, fsize) < 0) {
+			perror("ftruncate");
+			return (1);
+		}
+		if (close(fd)) {
+			perror("close");
+			return (1);
+		}
+	} else {
+		if (truncate(filename, fsize) < 0) {
+			perror("truncate");
+			return (1);
+		}
+	}
+	return (0);
+}
+
+static void
+parse_options(int argc, char *argv[])
+{
+	int c;
+	extern char *optarg;
+	extern int optind, optopt;
+
+	while ((c = getopt(argc, argv, "s:f")) != -1) {
+		switch (c) {
+			case 's':
+				fsize = atoi(optarg);
+				break;
+			case 'f':
+				ftruncflag++;
+				break;
+			case ':':
+				(void) fprintf(stderr,
+				    "Option -%c requires an operand\n", optopt);
+				errflag++;
+				break;
+		}
+		if (errflag) {
+			(void) usage(argv[0]);
+		}
+	}
+
+	if (argc <= optind) {
+		(void) fprintf(stderr, "No filename specified\n");
+		usage(argv[0]);
+	}
+	filename = argv[optind];
+}