1 /* $NetBSD: mktemp.c,v 1.12 2012/11/03 13:34:08 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1994, 1995, 1996, 1998 Peter Wemm <peter@netplex.com.au> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 /* 31 * This program was originally written long ago, originally for a non 32 * BSD-like OS without mkstemp(). It's been modified over the years 33 * to use mkstemp() rather than the original O_CREAT|O_EXCL/fstat/lstat 34 * etc style hacks. 35 * A cleanup, misc options and mkdtemp() calls were added to try and work 36 * more like the OpenBSD version - which was first to publish the interface. 37 */ 38 39 #if HAVE_NBTOOL_CONFIG_H 40 #include "nbtool_config.h" 41 #endif 42 43 #include <sys/cdefs.h> 44 #include <sys/types.h> 45 #include <err.h> 46 #include <paths.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 52 #if defined(__RCSID) && !defined(__lint) 53 __RCSID("$NetBSD: mktemp.c,v 1.12 2012/11/03 13:34:08 christos Exp $"); 54 #endif /* !__lint */ 55 56 static void usage(void) __dead; 57 58 int 59 main(int argc, char **argv) 60 { 61 int c, fd, ret; 62 char *tmpdir; 63 const char *prefix; 64 char *name; 65 int dflag, qflag, tflag, uflag; 66 67 setprogname(*argv); 68 ret = dflag = qflag = tflag = uflag = 0; 69 tmpdir = NULL; 70 prefix = "mktemp"; 71 name = NULL; 72 73 while ((c = getopt(argc, argv, "dp:qt:u")) != -1) 74 switch (c) { 75 case 'd': 76 dflag++; 77 break; 78 79 case 'p': 80 tmpdir = optarg; 81 break; 82 83 case 'q': 84 qflag++; 85 break; 86 87 case 't': 88 prefix = optarg; 89 tflag++; 90 break; 91 92 case 'u': 93 uflag++; 94 break; 95 96 default: 97 usage(); 98 } 99 100 argc -= optind; 101 argv += optind; 102 103 if (tflag == 0 && argc < 1) 104 tflag = 1; 105 106 if (tflag) { 107 if (tmpdir == NULL) 108 tmpdir = getenv("TMPDIR"); 109 if (tmpdir == NULL) 110 (void)asprintf(&name, "%s%s.XXXXXXXX", _PATH_TMP, 111 prefix); 112 else 113 (void)asprintf(&name, "%s/%s.XXXXXXXX", tmpdir, prefix); 114 /* if this fails, the program is in big trouble already */ 115 if (name == NULL) { 116 if (qflag) 117 return 1; 118 else 119 errx(1, "Cannot generate template"); 120 } 121 } else if (argc < 1) { 122 usage(); 123 } 124 125 /* generate all requested files */ 126 while (name != NULL || argc > 0) { 127 if (name == NULL) { 128 if (tmpdir) 129 (void)asprintf(&name, "%s/%s", 130 tmpdir, argv[0]); 131 else 132 name = strdup(argv[0]); 133 argv++; 134 argc--; 135 } 136 137 if (dflag) { 138 if (mkdtemp(name) == NULL) { 139 ret = 1; 140 if (!qflag) 141 warn("mkdtemp failed on %s", name); 142 } else { 143 (void)printf("%s\n", name); 144 if (uflag) 145 (void)rmdir(name); 146 } 147 } else { 148 fd = mkstemp(name); 149 if (fd < 0) { 150 ret = 1; 151 if (!qflag) 152 warn("mkstemp failed on %s", name); 153 } else { 154 (void)close(fd); 155 if (uflag) 156 (void)unlink(name); 157 (void)printf("%s\n", name); 158 } 159 } 160 if (name) 161 free(name); 162 name = NULL; 163 } 164 return ret; 165 } 166 167 static void 168 usage(void) 169 { 170 (void)fprintf(stderr, 171 "Usage: %s [-dqu] [-p <tmpdir>] {-t prefix | template ...}\n", 172 getprogname()); 173 exit (1); 174 } 175