xref: /freebsd/usr.bin/fsync/fsync.c (revision 61e21613)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2000 Paul Saab <ps@FreeBSD.org>
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 REGENTS 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 REGENTS 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 #include <err.h>
30 #include <fcntl.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <sysexits.h>
34 #include <unistd.h>
35 
36 static void	usage(void);
37 
38 int
39 main(int argc, char *argv[])
40 {
41 	int fd;
42 	int i;
43 	int rval;
44 
45 	if (argc < 2) {
46 		usage();
47 		/* NOTREACHED */
48 	}
49 
50 	rval = EX_OK;
51 	for (i = 1; i < argc; ++i) {
52 		if ((fd = open(argv[i], O_RDONLY)) == -1) {
53 			warn("open %s", argv[i]);
54 			if (rval == EX_OK)
55 				rval = EX_NOINPUT;
56 			continue;
57 		}
58 
59 		if (fsync(fd) == -1) {
60 			warn("fsync %s", argv[i]);
61 			if (rval == EX_OK)
62 				rval = EX_OSERR;
63 		}
64 		close(fd);
65 	}
66 	exit(rval);
67 	/* NOTREACHED */
68 }
69 
70 static void
71 usage(void)
72 {
73 
74 	fprintf(stderr, "usage: fsync file ...\n");
75 	exit(EX_USAGE);
76 	/* NOTREACHED */
77 }
78