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/capsicum.h>
32 #include <sys/ioctl.h>
34 #include <capsicum_helpers.h>
53 bool show_label = false;
55 typedef int (*fstyp_function)(FILE *, char *, size_t);
59 fstyp_function function;
61 const char *precache_encoding;
63 { "apfs", &fstyp_apfs, true, NULL },
64 { "befs", &fstyp_befs, false, NULL },
65 { "cd9660", &fstyp_cd9660, false, NULL },
66 { "exfat", &fstyp_exfat, false, EXFAT_ENC },
67 { "ext2fs", &fstyp_ext2fs, false, NULL },
68 { "geli", &fstyp_geli, true, NULL },
69 { "hammer", &fstyp_hammer, true, NULL },
70 { "hammer2", &fstyp_hammer2, true, NULL },
71 { "hfs+", &fstyp_hfsp, false, NULL },
72 { "msdosfs", &fstyp_msdosfs, false, NULL },
73 { "ntfs", &fstyp_ntfs, false, NTFS_ENC },
74 { "ufs", &fstyp_ufs, false, NULL },
76 { "zfs", &fstyp_zfs, true, NULL },
78 { NULL, NULL, NULL, NULL }
82 read_buf(FILE *fp, off_t off, size_t len)
88 error = fseek(fp, off, SEEK_SET);
90 warn("cannot seek to %jd", (uintmax_t)off);
96 warn("cannot malloc %zd bytes of memory", len);
100 nread = fread(buf, len, 1, fp);
112 checked_strdup(const char *s)
123 rtrim(char *label, size_t size)
127 for (i = size - 1; i >= 0; i--) {
128 if (label[i] == '\0')
130 else if (label[i] == ' ')
141 fprintf(stderr, "usage: fstyp [-l] [-s] [-u] special\n");
146 type_check(const char *path, FILE *fp)
154 error = fstat(fd, &sb);
156 err(1, "%s: fstat", path);
158 if (S_ISREG(sb.st_mode))
161 error = ioctl(fd, DIOCGMEDIASIZE, &mediasize);
163 errx(1, "%s: not a disk", path);
167 main(int argc, char **argv)
169 int ch, error, i, nbytes;
170 bool ignore_type = false, show_unmountable = false;
171 char label[LABEL_LEN + 1], strvised[LABEL_LEN * 4 + 1];
174 fstyp_function fstyp_f;
176 while ((ch = getopt(argc, argv, "lsu")) != -1) {
185 show_unmountable = true;
199 if (setlocale(LC_CTYPE, "") == NULL)
201 caph_cache_catpages();
204 /* Cache iconv conversion data before entering capability mode. */
206 for (i = 0; i < (int)nitems(fstypes); i++) {
209 if (fstypes[i].precache_encoding == NULL)
211 cd = iconv_open("", fstypes[i].precache_encoding);
212 if (cd == (iconv_t)-1)
213 err(1, "%s: iconv_open %s", fstypes[i].name,
214 fstypes[i].precache_encoding);
215 /* Iconv keeps a small cache of unused encodings. */
221 fp = fopen(path, "r");
225 if (caph_enter() < 0)
228 if (ignore_type == false)
229 type_check(path, fp);
231 memset(label, '\0', sizeof(label));
234 if (show_unmountable == false && fstypes[i].unmountable == true)
236 fstyp_f = fstypes[i].function;
240 error = fstyp_f(fp, label, sizeof(label));
245 if (fstypes[i].name == NULL) {
246 warnx("%s: filesystem not recognized", path);
250 if (show_label && label[0] != '\0') {
252 * XXX: I'd prefer VIS_HTTPSTYLE, but it unconditionally
255 nbytes = strsnvis(strvised, sizeof(strvised), label,
256 VIS_GLOB | VIS_NL, "\"'$");
260 printf("%s %s\n", fstypes[i].name, strvised);
262 printf("%s\n", fstypes[i].name);