1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5da6c28aaSamw * Common Development and Distribution License (the "License"). 6da6c28aaSamw * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 22*ae480683STim Haley * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #include <sys/zfs_context.h> 27fa9e4066Sahrens #include <sys/vfs.h> 28fa9e4066Sahrens #include <sys/fs/zfs.h> 29fa9e4066Sahrens #include <sys/zfs_znode.h> 30fa9e4066Sahrens #include <sys/zfs_acl.h> 31fa9e4066Sahrens 32fa9e4066Sahrens void 33da6c28aaSamw zfs_oldace_byteswap(ace_t *ace, int ace_cnt) 34fa9e4066Sahrens { 35fa9e4066Sahrens int i; 36fa9e4066Sahrens 37fa9e4066Sahrens for (i = 0; i != ace_cnt; i++, ace++) { 38fa9e4066Sahrens ace->a_who = BSWAP_32(ace->a_who); 39fa9e4066Sahrens ace->a_access_mask = BSWAP_32(ace->a_access_mask); 40fa9e4066Sahrens ace->a_flags = BSWAP_16(ace->a_flags); 41fa9e4066Sahrens ace->a_type = BSWAP_16(ace->a_type); 42fa9e4066Sahrens } 43fa9e4066Sahrens } 44fa9e4066Sahrens 45da6c28aaSamw /* 46da6c28aaSamw * swap ace_t and ace_oject_t 47da6c28aaSamw */ 48da6c28aaSamw void 49da6c28aaSamw zfs_ace_byteswap(void *buf, size_t size, boolean_t zfs_layout) 50da6c28aaSamw { 51da6c28aaSamw caddr_t end; 52da6c28aaSamw caddr_t ptr; 53da6c28aaSamw zfs_ace_t *zacep; 54da6c28aaSamw ace_t *acep; 55da6c28aaSamw uint16_t entry_type; 56da6c28aaSamw size_t entry_size; 57da6c28aaSamw int ace_type; 58da6c28aaSamw 59da6c28aaSamw end = (caddr_t)buf + size; 60da6c28aaSamw ptr = buf; 61da6c28aaSamw 62da6c28aaSamw while (ptr < end) { 63da6c28aaSamw if (zfs_layout) { 64*ae480683STim Haley /* 65*ae480683STim Haley * Avoid overrun. Embedded aces can have one 66*ae480683STim Haley * of several sizes. We don't know exactly 67*ae480683STim Haley * how many our present, only the size of the 68*ae480683STim Haley * buffer containing them. That size may be 69*ae480683STim Haley * larger than needed to hold the aces 70*ae480683STim Haley * present. As long as we do not do any 71*ae480683STim Haley * swapping beyond the end of our block we are 72*ae480683STim Haley * okay. It it safe to swap any non-ace data 73*ae480683STim Haley * within the block since it is just zeros. 74*ae480683STim Haley */ 75*ae480683STim Haley if (ptr + sizeof (zfs_ace_hdr_t) > end) { 76*ae480683STim Haley break; 77*ae480683STim Haley } 78da6c28aaSamw zacep = (zfs_ace_t *)ptr; 79da6c28aaSamw zacep->z_hdr.z_access_mask = 80da6c28aaSamw BSWAP_32(zacep->z_hdr.z_access_mask); 81da6c28aaSamw zacep->z_hdr.z_flags = BSWAP_16(zacep->z_hdr.z_flags); 82da6c28aaSamw ace_type = zacep->z_hdr.z_type = 83da6c28aaSamw BSWAP_16(zacep->z_hdr.z_type); 84da6c28aaSamw entry_type = zacep->z_hdr.z_flags & ACE_TYPE_FLAGS; 85da6c28aaSamw } else { 86*ae480683STim Haley /* Overrun avoidance */ 87*ae480683STim Haley if (ptr + sizeof (ace_t) > end) { 88*ae480683STim Haley break; 89*ae480683STim Haley } 90da6c28aaSamw acep = (ace_t *)ptr; 91da6c28aaSamw acep->a_access_mask = BSWAP_32(acep->a_access_mask); 92da6c28aaSamw acep->a_flags = BSWAP_16(acep->a_flags); 93da6c28aaSamw ace_type = acep->a_type = BSWAP_16(acep->a_type); 94da6c28aaSamw acep->a_who = BSWAP_32(acep->a_who); 95da6c28aaSamw entry_type = acep->a_flags & ACE_TYPE_FLAGS; 96da6c28aaSamw } 97da6c28aaSamw switch (entry_type) { 98da6c28aaSamw case ACE_OWNER: 99da6c28aaSamw case ACE_EVERYONE: 100da6c28aaSamw case (ACE_IDENTIFIER_GROUP | ACE_GROUP): 101da6c28aaSamw entry_size = zfs_layout ? 102da6c28aaSamw sizeof (zfs_ace_hdr_t) : sizeof (ace_t); 103da6c28aaSamw break; 104da6c28aaSamw case ACE_IDENTIFIER_GROUP: 105da6c28aaSamw default: 106*ae480683STim Haley /* Overrun avoidance */ 107da6c28aaSamw if (zfs_layout) { 108*ae480683STim Haley if (ptr + sizeof (zfs_ace_t) <= end) { 109*ae480683STim Haley zacep->z_fuid = BSWAP_64(zacep->z_fuid); 110*ae480683STim Haley } else { 111*ae480683STim Haley entry_size = sizeof (zfs_ace_t); 112*ae480683STim Haley break; 113*ae480683STim Haley } 114da6c28aaSamw } 115da6c28aaSamw switch (ace_type) { 116da6c28aaSamw case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: 117da6c28aaSamw case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: 118da6c28aaSamw case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: 119da6c28aaSamw case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: 120da6c28aaSamw entry_size = zfs_layout ? 121da6c28aaSamw sizeof (zfs_object_ace_t) : 122da6c28aaSamw sizeof (ace_object_t); 123da6c28aaSamw break; 124da6c28aaSamw default: 125da6c28aaSamw entry_size = zfs_layout ? sizeof (zfs_ace_t) : 126da6c28aaSamw sizeof (ace_t); 127da6c28aaSamw break; 128da6c28aaSamw } 129da6c28aaSamw } 130da6c28aaSamw ptr = ptr + entry_size; 131da6c28aaSamw } 132da6c28aaSamw } 133da6c28aaSamw 134fa9e4066Sahrens /* ARGSUSED */ 135fa9e4066Sahrens void 136da6c28aaSamw zfs_oldacl_byteswap(void *buf, size_t size) 137fa9e4066Sahrens { 138fa9e4066Sahrens int cnt; 139fa9e4066Sahrens 140fa9e4066Sahrens /* 141fa9e4066Sahrens * Arggh, since we don't know how many ACEs are in 142fa9e4066Sahrens * the array, we have to swap the entire block 143fa9e4066Sahrens */ 144fa9e4066Sahrens 145fa9e4066Sahrens cnt = size / sizeof (ace_t); 146fa9e4066Sahrens 147da6c28aaSamw zfs_oldace_byteswap((ace_t *)buf, cnt); 148da6c28aaSamw } 149da6c28aaSamw 150da6c28aaSamw /* ARGSUSED */ 151da6c28aaSamw void 152da6c28aaSamw zfs_acl_byteswap(void *buf, size_t size) 153da6c28aaSamw { 154da6c28aaSamw zfs_ace_byteswap(buf, size, B_TRUE); 155fa9e4066Sahrens } 156fa9e4066Sahrens 157fa9e4066Sahrens void 158fa9e4066Sahrens zfs_znode_byteswap(void *buf, size_t size) 159fa9e4066Sahrens { 160fa9e4066Sahrens znode_phys_t *zp = buf; 161fa9e4066Sahrens 162fa9e4066Sahrens ASSERT(size >= sizeof (znode_phys_t)); 163fa9e4066Sahrens 164fa9e4066Sahrens zp->zp_crtime[0] = BSWAP_64(zp->zp_crtime[0]); 165fa9e4066Sahrens zp->zp_crtime[1] = BSWAP_64(zp->zp_crtime[1]); 166fa9e4066Sahrens zp->zp_atime[0] = BSWAP_64(zp->zp_atime[0]); 167fa9e4066Sahrens zp->zp_atime[1] = BSWAP_64(zp->zp_atime[1]); 168fa9e4066Sahrens zp->zp_mtime[0] = BSWAP_64(zp->zp_mtime[0]); 169fa9e4066Sahrens zp->zp_mtime[1] = BSWAP_64(zp->zp_mtime[1]); 170fa9e4066Sahrens zp->zp_ctime[0] = BSWAP_64(zp->zp_ctime[0]); 171fa9e4066Sahrens zp->zp_ctime[1] = BSWAP_64(zp->zp_ctime[1]); 172fa9e4066Sahrens zp->zp_gen = BSWAP_64(zp->zp_gen); 173fa9e4066Sahrens zp->zp_mode = BSWAP_64(zp->zp_mode); 174fa9e4066Sahrens zp->zp_size = BSWAP_64(zp->zp_size); 175fa9e4066Sahrens zp->zp_parent = BSWAP_64(zp->zp_parent); 176fa9e4066Sahrens zp->zp_links = BSWAP_64(zp->zp_links); 177fa9e4066Sahrens zp->zp_xattr = BSWAP_64(zp->zp_xattr); 178fa9e4066Sahrens zp->zp_rdev = BSWAP_64(zp->zp_rdev); 179fa9e4066Sahrens zp->zp_flags = BSWAP_64(zp->zp_flags); 180fa9e4066Sahrens zp->zp_uid = BSWAP_64(zp->zp_uid); 181fa9e4066Sahrens zp->zp_gid = BSWAP_64(zp->zp_gid); 182da6c28aaSamw zp->zp_zap = BSWAP_64(zp->zp_zap); 183fa9e4066Sahrens zp->zp_pad[0] = BSWAP_64(zp->zp_pad[0]); 184fa9e4066Sahrens zp->zp_pad[1] = BSWAP_64(zp->zp_pad[1]); 185fa9e4066Sahrens zp->zp_pad[2] = BSWAP_64(zp->zp_pad[2]); 186fa9e4066Sahrens 187fa9e4066Sahrens zp->zp_acl.z_acl_extern_obj = BSWAP_64(zp->zp_acl.z_acl_extern_obj); 188da6c28aaSamw zp->zp_acl.z_acl_size = BSWAP_32(zp->zp_acl.z_acl_size); 189fa9e4066Sahrens zp->zp_acl.z_acl_version = BSWAP_16(zp->zp_acl.z_acl_version); 190da6c28aaSamw zp->zp_acl.z_acl_count = BSWAP_16(zp->zp_acl.z_acl_count); 191da6c28aaSamw if (zp->zp_acl.z_acl_version == ZFS_ACL_VERSION) { 192da6c28aaSamw zfs_acl_byteswap((void *)&zp->zp_acl.z_ace_data[0], 193da6c28aaSamw ZFS_ACE_SPACE); 194*ae480683STim Haley } else { 195da6c28aaSamw zfs_oldace_byteswap((ace_t *)&zp->zp_acl.z_ace_data[0], 196da6c28aaSamw ACE_SLOT_CNT); 197*ae480683STim Haley } 198fa9e4066Sahrens } 199