File: [local] / src / usr.bin / mktemp / mktemp.c (download)
Revision 1.6, Mon Oct 1 17:08:30 2001 UTC (22 years, 8 months ago) by millert
Branch: MAIN
Changes since 1.5: +52 -17 lines
Add -t and -d flags to allow script writers to easily take a user's TMPDIR
environment variable into account. This came out of a discussion with
Solar Designer.
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/* $OpenBSD: mktemp.c,v 1.6 2001/10/01 17:08:30 millert Exp $ */
/*
* Copyright (c) 1996, 1997, 2001 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] = "$OpenBSD: mktemp.c,v 1.6 2001/10/01 17:08:30 millert Exp $";
#endif /* not lint */
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
void
usage()
{
extern char *__progname;
(void) fprintf(stderr,
"Usage: %s [-dqtu] [-p prefix] template\n", __progname);
exit(1);
}
int
main(argc, argv)
int argc;
char **argv;
{
int ch, uflag = 0, qflag = 0, tflag = 0, makedir = 0;
char *cp, *template, *prefix = _PATH_TMP;
size_t plen;
while ((ch = getopt(argc, argv, "dp:qtu")) != -1)
switch(ch) {
case 'd':
makedir = 1;
break;
case 'p':
prefix = optarg;
tflag = 1;
break;
case 'q':
qflag = 1;
break;
case 't':
tflag = 1;
break;
case 'u':
uflag = 1;
break;
default:
usage();
}
if (argc - optind != 1)
usage();
if (tflag) {
if (strchr(argv[optind], '/')) {
if (qflag)
exit(1);
else
errx(1, "template must not contain directory separators in -t mode");
}
cp = getenv("TMPDIR");
if (cp != NULL && *cp != '\0')
prefix = cp;
plen = strlen(prefix);
while (plen != 0 && prefix[plen - 1] == '/')
plen--;
template = (char *)malloc(plen + 1 + strlen(argv[optind]) + 1);
if (template == NULL) {
if (qflag)
exit(1);
else
errx(1, "Cannot allocate memory");
}
memcpy(template, prefix, plen);
template[plen] = '/';
strcpy(template + plen + 1, argv[optind]); /* SAFE */
} else {
if ((template = strdup(argv[optind])) == NULL) {
if (qflag)
exit(1);
else
errx(1, "Cannot allocate memory");
}
}
if (makedir) {
if (mkdtemp(template) == NULL) {
if (qflag)
exit(1);
else
err(1, "Cannot make temp dir %s", template);
}
if (uflag)
(void) rmdir(template);
} else {
if (mkstemp(template) < 0) {
if (qflag)
exit(1);
else
err(1, "Cannot create temp file %s", template);
}
if (uflag)
(void) unlink(template);
}
(void) puts(template);
free(template);
exit(0);
}