2 * Copyright (c) 2014 The FreeBSD Foundation
4 * This software was developed by Edward Tomasz Napierala under sponsorship
5 * from the FreeBSD Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/capsicum.h>
35 #include <sys/ioctl.h>
37 #include <capsicum_helpers.h>
56 bool show_label = false;
58 typedef int (*fstyp_function)(FILE *, char *, size_t);
62 fstyp_function function;
64 char *precache_encoding;
66 { "apfs", &fstyp_apfs, true, NULL },
67 { "cd9660", &fstyp_cd9660, false, NULL },
68 { "exfat", &fstyp_exfat, false, EXFAT_ENC },
69 { "ext2fs", &fstyp_ext2fs, false, NULL },
70 { "geli", &fstyp_geli, true, NULL },
71 { "hammer", &fstyp_hammer, true, NULL },
72 { "hammer2", &fstyp_hammer2, true, NULL },
73 { "hfs+", &fstyp_hfsp, false, NULL },
74 { "msdosfs", &fstyp_msdosfs, false, NULL },
75 { "ntfs", &fstyp_ntfs, false, NTFS_ENC },
76 { "ufs", &fstyp_ufs, false, NULL },
78 { "zfs", &fstyp_zfs, true, NULL },
80 { NULL, NULL, NULL, NULL }
84 read_buf(FILE *fp, off_t off, size_t len)
90 error = fseek(fp, off, SEEK_SET);
92 warn("cannot seek to %jd", (uintmax_t)off);
98 warn("cannot malloc %zd bytes of memory", len);
102 nread = fread(buf, len, 1, fp);
114 checked_strdup(const char *s)
125 rtrim(char *label, size_t size)
129 for (i = size - 1; i >= 0; i--) {
130 if (label[i] == '\0')
132 else if (label[i] == ' ')
143 fprintf(stderr, "usage: fstyp [-l] [-s] [-u] special\n");
148 type_check(const char *path, FILE *fp)
156 error = fstat(fd, &sb);
158 err(1, "%s: fstat", path);
160 if (S_ISREG(sb.st_mode))
163 error = ioctl(fd, DIOCGMEDIASIZE, &mediasize);
165 errx(1, "%s: not a disk", path);
169 main(int argc, char **argv)
171 int ch, error, i, nbytes;
172 bool ignore_type = false, show_unmountable = false;
173 char label[LABEL_LEN + 1], strvised[LABEL_LEN * 4 + 1];
176 fstyp_function fstyp_f;
178 while ((ch = getopt(argc, argv, "lsu")) != -1) {
187 show_unmountable = true;
201 if (setlocale(LC_CTYPE, "") == NULL)
203 caph_cache_catpages();
206 /* Cache iconv conversion data before entering capability mode. */
208 for (i = 0; i < nitems(fstypes); i++) {
211 if (fstypes[i].precache_encoding == NULL)
213 cd = iconv_open("", fstypes[i].precache_encoding);
214 if (cd == (iconv_t)-1)
215 err(1, "%s: iconv_open %s", fstypes[i].name,
216 fstypes[i].precache_encoding);
217 /* Iconv keeps a small cache of unused encodings. */
223 fp = fopen(path, "r");
227 if (caph_enter() < 0)
230 if (ignore_type == false)
231 type_check(path, fp);
233 memset(label, '\0', sizeof(label));
236 if (show_unmountable == false && fstypes[i].unmountable == true)
238 fstyp_f = fstypes[i].function;
242 error = fstyp_f(fp, label, sizeof(label));
247 if (fstypes[i].name == NULL) {
248 warnx("%s: filesystem not recognized", path);
252 if (show_label && label[0] != '\0') {
254 * XXX: I'd prefer VIS_HTTPSTYLE, but it unconditionally
257 nbytes = strsnvis(strvised, sizeof(strvised), label,
258 VIS_GLOB | VIS_NL, "\"'$");
262 printf("%s %s\n", fstypes[i].name, strvised);
264 printf("%s\n", fstypes[i].name);