xref: /titanic_51/usr/src/uts/common/fs/zfs/zfs_byteswap.c (revision a8ae99647dd4d540346030718e08a083b0fbdf42)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <sys/zfs_context.h>
30 #include <sys/vfs.h>
31 #include <sys/fs/zfs.h>
32 #include <sys/zfs_znode.h>
33 #include <sys/zfs_acl.h>
34 
35 void
36 zfs_ace_byteswap(ace_t *ace, int ace_cnt)
37 {
38 	int i;
39 
40 	for (i = 0; i != ace_cnt; i++, ace++) {
41 		ace->a_who = BSWAP_32(ace->a_who);
42 		ace->a_access_mask = BSWAP_32(ace->a_access_mask);
43 		ace->a_flags = BSWAP_16(ace->a_flags);
44 		ace->a_type = BSWAP_16(ace->a_type);
45 	}
46 }
47 
48 /* ARGSUSED */
49 void
50 zfs_acl_byteswap(void *buf, size_t size)
51 {
52 	int cnt;
53 
54 	/*
55 	 * Arggh, since we don't know how many ACEs are in
56 	 * the array, we have to swap the entire block
57 	 */
58 
59 	cnt = size / sizeof (ace_t);
60 
61 	zfs_ace_byteswap((ace_t *)buf, cnt);
62 }
63 
64 void
65 zfs_znode_byteswap(void *buf, size_t size)
66 {
67 	znode_phys_t *zp = buf;
68 
69 	ASSERT(size >= sizeof (znode_phys_t));
70 
71 	zp->zp_crtime[0] = BSWAP_64(zp->zp_crtime[0]);
72 	zp->zp_crtime[1] = BSWAP_64(zp->zp_crtime[1]);
73 	zp->zp_atime[0] = BSWAP_64(zp->zp_atime[0]);
74 	zp->zp_atime[1] = BSWAP_64(zp->zp_atime[1]);
75 	zp->zp_mtime[0] = BSWAP_64(zp->zp_mtime[0]);
76 	zp->zp_mtime[1] = BSWAP_64(zp->zp_mtime[1]);
77 	zp->zp_ctime[0] = BSWAP_64(zp->zp_ctime[0]);
78 	zp->zp_ctime[1] = BSWAP_64(zp->zp_ctime[1]);
79 	zp->zp_gen = BSWAP_64(zp->zp_gen);
80 	zp->zp_mode = BSWAP_64(zp->zp_mode);
81 	zp->zp_size = BSWAP_64(zp->zp_size);
82 	zp->zp_parent = BSWAP_64(zp->zp_parent);
83 	zp->zp_links = BSWAP_64(zp->zp_links);
84 	zp->zp_xattr = BSWAP_64(zp->zp_xattr);
85 	zp->zp_rdev = BSWAP_64(zp->zp_rdev);
86 	zp->zp_flags = BSWAP_64(zp->zp_flags);
87 	zp->zp_uid = BSWAP_64(zp->zp_uid);
88 	zp->zp_gid = BSWAP_64(zp->zp_gid);
89 	zp->zp_pad[0] = BSWAP_64(zp->zp_pad[0]);
90 	zp->zp_pad[1] = BSWAP_64(zp->zp_pad[1]);
91 	zp->zp_pad[2] = BSWAP_64(zp->zp_pad[2]);
92 	zp->zp_pad[3] = BSWAP_64(zp->zp_pad[3]);
93 
94 	zp->zp_acl.z_acl_extern_obj = BSWAP_64(zp->zp_acl.z_acl_extern_obj);
95 	zp->zp_acl.z_acl_count = BSWAP_32(zp->zp_acl.z_acl_count);
96 	zp->zp_acl.z_acl_version = BSWAP_16(zp->zp_acl.z_acl_version);
97 	zp->zp_acl.z_acl_pad = BSWAP_16(zp->zp_acl.z_acl_pad);
98 	zfs_ace_byteswap(&zp->zp_acl.z_ace_data[0], ACE_SLOT_CNT);
99 }
100