mktemp.c revision 35733 
1/*-
2 * Copyright (c) 1994, 1995, 1996, 1998 Peter Wemm <peter@netplex.com.au>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28/*
29 * This program was originally written long ago, originally for a non
30 * BSD-like OS without mkstemp().  It's been modified over the years
31 * to use mkstemp() rather than the original O_CREAT|O_EXCL/fstat/lstat
32 * etc style hacks.
33 * A cleanup, misc options and mkdtemp() calls were added to try and work
34 * more like the OpenBSD version - which was first to publish the interface.
35 */
36
37#include <err.h>
38#include <paths.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42#include <unistd.h>
43
44#ifndef lint
45static const char rcsid[] =
46	"$FreeBSD: head/usr.bin/mktemp/mktemp.c 35733 1998-05-05 06:13:47Z charnier $";
47#endif /* not lint */
48
49static void usage __P((void));
50
51int
52main(int argc, char **argv)
53{
54	int c, fd, ret;
55	char *tmpdir, *prefix;
56	char *name;
57	int dflag, qflag, tflag, uflag;
58
59	ret = dflag = qflag = tflag = uflag = 0;
60	prefix = "mktemp";
61	name = NULL;
62
63	while ((c = getopt(argc, argv, "dqt:u")) != -1)
64		switch (c) {
65		case 'd':
66			dflag++;
67			break;
68
69		case 'q':
70			qflag++;
71			break;
72
73		case 't':
74			prefix = optarg;
75			tflag++;
76			break;
77
78		case 'u':
79			uflag++;
80			break;
81
82		default:
83			usage();
84		}
85
86	argc -= optind;
87	argv += optind;
88
89	if (tflag) {
90		tmpdir = getenv("TMPDIR");
91		if (tmpdir == NULL)
92			asprintf(&name, "%s%s.XXXXXXXX", _PATH_TMP, prefix);
93		else
94			asprintf(&name, "%s/%s.XXXXXXXX", tmpdir, prefix);
95		/* if this fails, the program is in big trouble already */
96		if (name == NULL) {
97			if (qflag)
98				return (1);
99			else
100				errx(1, "cannot generate template");
101		}
102	} else if (argc < 1) {
103		usage();
104	}
105
106	/* generate all requested files */
107	while (name != NULL || argc > 0) {
108		if (name == NULL) {
109			name = strdup(argv[0]);
110			argv++;
111			argc--;
112		}
113
114		if (dflag) {
115			if (mkdtemp(name) == NULL) {
116				ret = 1;
117				if (!qflag)
118					warn("mkdtemp failed on %s", name);
119			} else {
120				printf("%s\n", name);
121				if (uflag)
122					rmdir(name);
123			}
124		} else {
125			fd = mkstemp(name);
126			if (fd < 0) {
127				ret = 1;
128				if (!qflag)
129					warn("mkstemp failed on %s", name);
130			} else {
131				close(fd);
132				if (uflag)
133					unlink(name);
134				printf("%s\n", name);
135			}
136		}
137		if (name)
138			free(name);
139		name = NULL;
140	}
141	return (ret);
142}
143
144static void
145usage()
146{
147	fprintf(stderr,
148		"usage: mktemp [-d] [-q] [-t prefix] [-u] [template ...]\n");
149	exit (1);
150}
151