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/capsicum.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
);