xref: /freebsd/lib/libprocstat/udf.c (revision 9a0c3479e22feda1bdb2db4b97f9deb1b5fa6269)
1 /*-
2  * Copyright (c) 2005-2009 Stanislav Sedov <stas@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
28 
29 #include <sys/param.h>
30 #include <sys/stat.h>
31 #include <sys/time.h>
32 #include <sys/vnode.h>
33 #include <sys/buf.h>
34 #define _KERNEL
35 #include <sys/mount.h>
36 #undef _KERNEL
37 
38 #include <netinet/in.h>
39 
40 #include <assert.h>
41 #include <err.h>
42 #include <kvm.h>
43 #include <stdlib.h>
44 
45 #include <fs/udf/ecma167-udf.h>
46 
47 #include "libprocstat.h"
48 #include "common_kvm.h"
49 
50 /* XXX */
51 struct udf_mnt {
52 	int			im_flags;
53 	struct mount		*im_mountp;
54 	struct g_consumer	*im_cp;
55 	struct bufobj		*im_bo;
56 	struct cdev		*im_dev;
57 	struct vnode		*im_devvp;
58 	int			bsize;
59 	int			bshift;
60 	int			bmask;
61 	uint32_t		part_start;
62 	uint32_t		part_len;
63 	uint64_t		root_id;
64 	struct long_ad		root_icb;
65 	int			p_sectors;
66 	int			s_table_entries;
67 	void			*s_table;
68 	void			*im_d2l;
69 };
70 struct udf_node {
71 	struct vnode	*i_vnode;
72 	struct udf_mnt	*udfmp;
73 	ino_t		hash_id;
74 	long		diroff;
75 	struct file_entry *fentry;
76 };
77 #define VTON(vp)	((struct udf_node *)((vp)->v_data))
78 
79 int
80 udf_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn)
81 {
82 	struct udf_node node;
83 	struct udf_mnt mnt;
84 	int error;
85 
86 	assert(kd);
87 	assert(vn);
88 	error = kvm_read_all(kd, (unsigned long)VTON(vp), &node, sizeof(node));
89 	if (error != 0) {
90 		warnx("can't read udf fnode at %p", (void *)VTON(vp));
91 		return (1);
92 	}
93         error = kvm_read_all(kd, (unsigned long)node.udfmp, &mnt, sizeof(mnt));
94         if (error != 0) {
95                 warnx("can't read udf_mnt at %p for vnode %p",
96                     (void *)node.udfmp, vp);
97                 return (1);
98         }
99 	vn->vn_fileid = node.hash_id;
100 	vn->vn_fsid = dev2udev(kd, mnt.im_dev);
101 	return (0);
102 }
103