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
26 static void
usage(char * msg,int exit_value)27 usage(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
34 int
main(int argc,char ** argv)35 main(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