1/*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source.  A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12/*
13 * Copyright (c) 2016 by Delphix. All rights reserved.
14 */
15
16#include <stdio.h>
17#include <stdlib.h>
18#include <fcntl.h>
19#include <string.h>
20#include <errno.h>
21#include <unistd.h>
22#include <sys/param.h>
23
24#define	MAX_INT_LENGTH 10
25
26static void
27usage(char *msg, int exit_value)
28{
29	(void) fprintf(stderr, "mkfiles basename max_file [min_file]\n");
30	(void) fprintf(stderr, "%s\n", msg);
31	exit(exit_value);
32}
33
34int
35main(int argc, char **argv)
36{
37	unsigned int numfiles = 0;
38	unsigned int first_file = 0;
39	unsigned int i;
40	char buf[MAXPATHLEN];
41
42	if (argc < 3 || argc > 4)
43		usage("Invalid number of arguments", -1);
44
45	if (sscanf(argv[2], "%u", &numfiles) != 1)
46		usage("Invalid maximum file", -2);
47
48	if (argc == 4 && sscanf(argv[3], "%u", &first_file) != 1)
49		usage("Invalid first file", -3);
50
51	if (numfiles < first_file)
52		usage("First file larger than last file", -3);
53
54	for (i = first_file; i < first_file + numfiles; i++) {
55		int fd;
56		(void) snprintf(buf, MAXPATHLEN, "%s%u", argv[1], i);
57		if ((fd = open(buf, O_CREAT | O_EXCL, O_RDWR)) == -1) {
58			(void) fprintf(stderr, "Failed to create %s %s\n", buf,
59			    strerror(errno));
60			return (-4);
61		}
62		(void) close(fd);
63	}
64	return (0);
65}
66