1 /* $OpenBSD: mkstemp.c,v 1.1 2024/01/19 19:45:02 millert Exp $ */
2 /*
3 * Copyright (c) 2024 Todd C. Miller
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/stat.h>
19 #include <errno.h>
20 #include <fcntl.h>
21 #include <stdlib.h>
22
23 #define MKOSTEMP_FLAGS (O_APPEND | O_CLOEXEC | O_DSYNC | O_RSYNC | O_SYNC)
24
25 static int
mkstemp_cb(const char * path,int flags)26 mkstemp_cb(const char *path, int flags)
27 {
28 flags |= O_CREAT | O_EXCL | O_RDWR;
29 return open(path, flags, S_IRUSR|S_IWUSR);
30 }
31
32 int
mkostemps(char * path,int slen,int flags)33 mkostemps(char *path, int slen, int flags)
34 {
35 if (flags & ~MKOSTEMP_FLAGS) {
36 errno = EINVAL;
37 return -1;
38 }
39 return __mktemp4(path, slen, flags, mkstemp_cb);
40 }
41
42 int
mkostemp(char * path,int flags)43 mkostemp(char *path, int flags)
44 {
45 if (flags & ~MKOSTEMP_FLAGS) {
46 errno = EINVAL;
47 return -1;
48 }
49 return __mktemp4(path, 0, flags, mkstemp_cb);
50 }
51 DEF_WEAK(mkostemp);
52
53 int
mkstemp(char * path)54 mkstemp(char *path)
55 {
56 return __mktemp4(path, 0, 0, mkstemp_cb);
57 }
58 DEF_WEAK(mkstemp);
59
60 int
mkstemps(char * path,int slen)61 mkstemps(char *path, int slen)
62 {
63 return __mktemp4(path, slen, 0, mkstemp_cb);
64 }
65