1 /* $OpenBSD: dev.c,v 1.1.1.1 2018/04/10 23:00:53 bluhm Exp $ */
2 /*
3 * Copyright (c) 2018 Alexander Bluhm <bluhm@openbsd.org>
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 <err.h>
19 #include <fcntl.h>
20 #include <stdarg.h>
21 #include <stdlib.h>
22 #include <stdio.h>
23 #include <unistd.h>
24
25 #include "header.h"
26
27 void
fdops(int fdpre,int fdpost)28 fdops(int fdpre, int fdpost)
29 {
30 char *devpre, *devpost;
31
32 if (asprintf(&devpre, "/dev/fd/%d", fdpre) == -1)
33 err(1, "asprintf fdpre");
34 if (asprintf(&devpost, "/dev/fd/%d", fdpost) == -1)
35 err(1, "asprintf fdpost");
36
37 if (open(devpre, O_RDONLY) == -1)
38 err(1, "open dev pre");
39 if (open(devpost, O_RDONLY) == -1)
40 err(1, "open dev post");
41
42 free(devpre);
43 free(devpost);
44 }
45