2 * Copyright (c) 2014 The FreeBSD Foundation
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/capability.h>
36 #include <sys/ioctl.h>
52 typedef int (*fstyp_function)(FILE *, char *, size_t);
56 fstyp_function function;
59 { "cd9660", &fstyp_cd9660, false },
60 { "ext2fs", &fstyp_ext2fs, false },
61 { "geli", &fstyp_geli, true },
62 { "msdosfs", &fstyp_msdosfs, false },
63 { "ntfs", &fstyp_ntfs, false },
64 { "ufs", &fstyp_ufs, false },
66 { "zfs", &fstyp_zfs, true },
72 read_buf(FILE *fp, off_t off, size_t len)
78 error = fseek(fp, off, SEEK_SET);
80 warn("cannot seek to %jd", (uintmax_t)off);
86 warn("cannot malloc %zd bytes of memory", len);
90 nread = fread(buf, len, 1, fp);
102 checked_strdup(const char *s)
113 rtrim(char *label, size_t size)
117 for (i = size - 1; i >= 0; i--) {
118 if (label[i] == '\0')
120 else if (label[i] == ' ')
131 fprintf(stderr, "usage: fstyp [-l] [-s] [-u] special\n");
136 type_check(const char *path, FILE *fp)
144 error = fstat(fd, &sb);
146 err(1, "%s: fstat", path);
148 if (S_ISREG(sb.st_mode))
151 error = ioctl(fd, DIOCGMEDIASIZE, &mediasize);
153 errx(1, "%s: not a disk", path);
157 main(int argc, char **argv)
159 int ch, error, i, nbytes;
160 bool ignore_type = false, show_label = false, show_unmountable = false;
161 char label[LABEL_LEN + 1], strvised[LABEL_LEN * 4 + 1];
164 fstyp_function fstyp_f;
166 while ((ch = getopt(argc, argv, "lsu")) != -1) {
175 show_unmountable = true;
189 fp = fopen(path, "r");
194 if (error != 0 && errno != ENOSYS)
197 if (ignore_type == false)
198 type_check(path, fp);
200 memset(label, '\0', sizeof(label));
203 if (show_unmountable == false && fstypes[i].unmountable == true)
205 fstyp_f = fstypes[i].function;
209 error = fstyp_f(fp, label, sizeof(label));
214 if (fstypes[i].name == NULL) {
215 warnx("%s: filesystem not recognized", path);
219 if (show_label && label[0] != '\0') {
221 * XXX: I'd prefer VIS_HTTPSTYLE, but it unconditionally
224 nbytes = strsnvis(strvised, sizeof(strvised), label,
225 VIS_GLOB | VIS_NL, "\"'$");
229 printf("%s %s\n", fstypes[i].name, strvised);
231 printf("%s\n", fstypes[i].name);