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git.ipfire.org Git - thirdparty/xfsprogs-dev.git/blob - mkfs/fstyp.c
2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
41 * fstyp allows the user to determine the filesystem identifier of
42 * mounted or unmounted filesystems using heuristics.
44 * The filesystem type is required by mount(2) and sometimes by mount(8)
45 * to mount filesystems of different types. fstyp uses exactly the same
46 * heuristics that mount does to determine whether the supplied device
47 * special file is of a known filesystem type. If it is, fstyp prints
48 * on standard output the usual filesystem identifier for that type and
49 * exits with a zero return code. If no filesystem is identified, fstyp
50 * prints "Unknown" to indicate failure and exits with a non-zero status.
52 * WARNING: The use of heuristics implies that the result of fstyp is not
53 * guaranteed to be accurate.
57 main(int argc
, char *argv
[])
62 fprintf(stderr
, "Usage: %s <device>\n", basename(argv
[0]));
66 if (access(argv
[1], R_OK
) < 0) {
71 if ((type
= fstype(argv
[1])) == NULL
) {