1bc3b2c55SMaxim Sobolev /*
2bc3b2c55SMaxim Sobolev * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
3bc3b2c55SMaxim Sobolev * All rights reserved.
4bc3b2c55SMaxim Sobolev *
5bc3b2c55SMaxim Sobolev * Redistribution and use in source and binary forms, with or without
6bc3b2c55SMaxim Sobolev * modification, are permitted provided that the following conditions
7bc3b2c55SMaxim Sobolev * are met:
8bc3b2c55SMaxim Sobolev * 1. Redistributions of source code must retain the above copyright
9bc3b2c55SMaxim Sobolev * notice, this list of conditions and the following disclaimer.
10bc3b2c55SMaxim Sobolev * 2. Redistributions in binary form must reproduce the above copyright
11bc3b2c55SMaxim Sobolev * notice, this list of conditions and the following disclaimer in the
12bc3b2c55SMaxim Sobolev * documentation and/or other materials provided with the distribution.
13bc3b2c55SMaxim Sobolev *
14bc3b2c55SMaxim Sobolev * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15bc3b2c55SMaxim Sobolev * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16bc3b2c55SMaxim Sobolev * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17bc3b2c55SMaxim Sobolev * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18bc3b2c55SMaxim Sobolev * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19bc3b2c55SMaxim Sobolev * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20bc3b2c55SMaxim Sobolev * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21bc3b2c55SMaxim Sobolev * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22bc3b2c55SMaxim Sobolev * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23bc3b2c55SMaxim Sobolev * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24bc3b2c55SMaxim Sobolev * SUCH DAMAGE.
25bc3b2c55SMaxim Sobolev */
26bc3b2c55SMaxim Sobolev
27bc3b2c55SMaxim Sobolev #include <sys/cdefs.h>
28bc3b2c55SMaxim Sobolev #include <sys/disk.h>
29bc3b2c55SMaxim Sobolev #include <sys/ioctl.h>
30bc3b2c55SMaxim Sobolev #include <sys/param.h>
31bc3b2c55SMaxim Sobolev #include <sys/mount.h>
32bc3b2c55SMaxim Sobolev #include <sys/stat.h>
33bc3b2c55SMaxim Sobolev #include <err.h>
34bc3b2c55SMaxim Sobolev #include <fcntl.h>
35*e9780526SMaxim Sobolev #include <unistd.h>
36bc3b2c55SMaxim Sobolev
37bc3b2c55SMaxim Sobolev #include "mkuz_cfg.h"
38bc3b2c55SMaxim Sobolev #include "mkuz_insize.h"
39bc3b2c55SMaxim Sobolev
40bc3b2c55SMaxim Sobolev off_t
mkuz_get_insize(struct mkuz_cfg * cfp)41bc3b2c55SMaxim Sobolev mkuz_get_insize(struct mkuz_cfg *cfp)
42bc3b2c55SMaxim Sobolev {
43bc3b2c55SMaxim Sobolev int ffd;
44bc3b2c55SMaxim Sobolev off_t ms;
45bc3b2c55SMaxim Sobolev struct stat sb;
46bc3b2c55SMaxim Sobolev struct statfs statfsbuf;
47bc3b2c55SMaxim Sobolev
48bc3b2c55SMaxim Sobolev if (fstat(cfp->fdr, &sb) != 0) {
49bc3b2c55SMaxim Sobolev warn("fstat(%s)", cfp->iname);
50bc3b2c55SMaxim Sobolev return (-1);
51bc3b2c55SMaxim Sobolev }
52bc3b2c55SMaxim Sobolev if ((sb.st_flags & SF_SNAPSHOT) != 0) {
53bc3b2c55SMaxim Sobolev if (fstatfs(cfp->fdr, &statfsbuf) != 0) {
54bc3b2c55SMaxim Sobolev warn("fstatfs(%s)", cfp->iname);
55bc3b2c55SMaxim Sobolev return (-1);
56bc3b2c55SMaxim Sobolev }
57bc3b2c55SMaxim Sobolev ffd = open(statfsbuf.f_mntfromname, O_RDONLY);
58bc3b2c55SMaxim Sobolev if (ffd < 0) {
59bc3b2c55SMaxim Sobolev warn("open(%s, O_RDONLY)", statfsbuf.f_mntfromname);
60bc3b2c55SMaxim Sobolev return (-1);
61bc3b2c55SMaxim Sobolev }
62bc3b2c55SMaxim Sobolev if (ioctl(ffd, DIOCGMEDIASIZE, &ms) < 0) {
63bc3b2c55SMaxim Sobolev warn("ioctl(DIOCGMEDIASIZE)");
64*e9780526SMaxim Sobolev close(ffd);
65bc3b2c55SMaxim Sobolev return (-1);
66bc3b2c55SMaxim Sobolev }
67*e9780526SMaxim Sobolev close(ffd);
68bc3b2c55SMaxim Sobolev sb.st_size = ms;
69bc3b2c55SMaxim Sobolev } else if (S_ISCHR(sb.st_mode)) {
70bc3b2c55SMaxim Sobolev if (ioctl(cfp->fdr, DIOCGMEDIASIZE, &ms) < 0) {
71bc3b2c55SMaxim Sobolev warn("ioctl(DIOCGMEDIASIZE)");
72bc3b2c55SMaxim Sobolev return (-1);
73bc3b2c55SMaxim Sobolev }
74bc3b2c55SMaxim Sobolev sb.st_size = ms;
75bc3b2c55SMaxim Sobolev } else if (!S_ISREG(sb.st_mode)) {
76bc3b2c55SMaxim Sobolev warnx("%s: not a character device or regular file\n",
77bc3b2c55SMaxim Sobolev cfp->iname);
78bc3b2c55SMaxim Sobolev return (-1);
79bc3b2c55SMaxim Sobolev }
80bc3b2c55SMaxim Sobolev return (sb.st_size);
81bc3b2c55SMaxim Sobolev }
82