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