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 static void
25 usage(const char *msg, int exit_value)
26 {
27 	(void) fprintf(stderr, "usage: mkfiles basename max_file [min_file]\n"
28 	    "%s\n", msg);
29 	exit(exit_value);
30 }
31 
32 int
33 main(int argc, char **argv)
34 {
35 	unsigned int numfiles = 0;
36 	unsigned int first_file = 0;
37 	unsigned int i;
38 	char buf[MAXPATHLEN];
39 
40 	if (argc < 3 || argc > 4)
41 		usage("Invalid number of arguments", 1);
42 
43 	if (sscanf(argv[2], "%u", &numfiles) != 1)
44 		usage("Invalid maximum file", 2);
45 
46 	if (argc == 4 && sscanf(argv[3], "%u", &first_file) != 1)
47 		usage("Invalid first file", 3);
48 
49 	for (i = first_file; i < first_file + numfiles; i++) {
50 		int fd;
51 		(void) snprintf(buf, MAXPATHLEN, "%s%u", argv[1], i);
52 		if ((fd = open(buf, O_CREAT | O_EXCL, O_RDWR)) == -1) {
53 			(void) fprintf(stderr, "Failed to create %s %s\n", buf,
54 			    strerror(errno));
55 			return (4);
56 		} else if (fchown(fd, getuid(), getgid()) < 0) {
57 			(void) fprintf(stderr, "Failed to chown %s %s\n", buf,
58 			    strerror(errno));
59 			return (5);
60 		}
61 		(void) close(fd);
62 	}
63 	return (0);
64 }
65