projects / mirror_zfs-debian.git / blame
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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 (the "License"). | |
| 6 | * You may not use this file except in compliance with the License. | |
| 7 | * | |
| 8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 | * or http://www.opensolaris.org/os/licensing. | |
| 10 | * See the License for the specific language governing permissions | |
| 11 | * and limitations under the License. | |
| 12 | * | |
| 13 | * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 | * If applicable, add the following below this CDDL HEADER, with the | |
| 16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 | * | |
| 19 | * CDDL HEADER END | |
| 20 | */ | |
| 21 | /* | |
| 22 | * Copyright 2010 Sun Microsystems, Inc. All rights reserved. | |
| 23 | * Use is subject to license terms. | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef _SYS_ZFS_SA_H | |
| 27 | #define _SYS_ZFS_SA_H | |
| 28 | ||
| 29 | #ifdef _KERNEL | |
| 30 | #include <sys/types32.h> | |
| 31 | #include <sys/list.h> | |
| 32 | #include <sys/dmu.h> | |
| 33 | #include <sys/zfs_acl.h> | |
| 34 | #include <sys/zfs_znode.h> | |
| 35 | #include <sys/sa.h> | |
| 36 | #include <sys/zil.h> | |
| 37 | ||
| 38 | ||
| 39 | #endif | |
| 40 | ||
| 41 | #ifdef __cplusplus | |
| 42 | extern "C" { | |
| 43 | #endif | |
| 44 | ||
| 45 | /* | |
| 46 | * This is the list of known attributes | |
| 47 | * to the ZPL. The values of the actual | |
| 48 | * attributes are not defined by the order | |
| 49 | * the enums. It is controlled by the attribute | |
| 50 | * registration mechanism. Two different file system | |
| 51 | * could have different numeric values for the same | |
| 52 | * attributes. this list is only used for dereferencing | |
| 53 | * into the table that will hold the actual numeric value. | |
| 54 | */ | |
| 55 | typedef enum zpl_attr { | |
| 56 | ZPL_ATIME, | |
| 57 | ZPL_MTIME, | |
| 58 | ZPL_CTIME, | |
| 59 | ZPL_CRTIME, | |
| 60 | ZPL_GEN, | |
| 61 | ZPL_MODE, | |
| 62 | ZPL_SIZE, | |
| 63 | ZPL_PARENT, | |
| 64 | ZPL_LINKS, | |
| 65 | ZPL_XATTR, | |
| 66 | ZPL_RDEV, | |
| 67 | ZPL_FLAGS, | |
| 68 | ZPL_UID, | |
| 69 | ZPL_GID, | |
| 70 | ZPL_PAD, | |
| 71 | ZPL_ZNODE_ACL, | |
| 72 | ZPL_DACL_COUNT, | |
| 73 | ZPL_SYMLINK, | |
| 74 | ZPL_SCANSTAMP, | |
| 75 | ZPL_DACL_ACES, | |
| 76 | ZPL_END | |
| 77 | } zpl_attr_t; | |
| 78 | ||
| 79 | #define ZFS_OLD_ZNODE_PHYS_SIZE 0x108 | |
| 80 | #define ZFS_SA_BASE_ATTR_SIZE (ZFS_OLD_ZNODE_PHYS_SIZE - \ | |
| 81 | sizeof (zfs_acl_phys_t)) | |
| 82 | ||
| 83 | #define SA_MODE_OFFSET 0 | |
| 84 | #define SA_SIZE_OFFSET 8 | |
| 85 | #define SA_GEN_OFFSET 16 | |
| 86 | #define SA_UID_OFFSET 24 | |
| 87 | #define SA_GID_OFFSET 32 | |
| 88 | #define SA_PARENT_OFFSET 40 | |
| 89 | ||
| 90 | extern sa_attr_reg_t zfs_attr_table[ZPL_END + 1]; | |
| 91 | extern sa_attr_reg_t zfs_legacy_attr_table[ZPL_END + 1]; | |
| 92 | ||
| 93 | /* | |
| 94 | * This is a deprecated data structure that only exists for | |
| 95 | * dealing with file systems create prior to ZPL version 5. | |
| 96 | */ | |
| 97 | typedef struct znode_phys { | |
| 98 | uint64_t zp_atime[2]; /* 0 - last file access time */ | |
| 99 | uint64_t zp_mtime[2]; /* 16 - last file modification time */ | |
| 100 | uint64_t zp_ctime[2]; /* 32 - last file change time */ | |
| 101 | uint64_t zp_crtime[2]; /* 48 - creation time */ | |
| 102 | uint64_t zp_gen; /* 64 - generation (txg of creation) */ | |
| 103 | uint64_t zp_mode; /* 72 - file mode bits */ | |
| 104 | uint64_t zp_size; /* 80 - size of file */ | |
| 105 | uint64_t zp_parent; /* 88 - directory parent (`..') */ | |
| 106 | uint64_t zp_links; /* 96 - number of links to file */ | |
| 107 | uint64_t zp_xattr; /* 104 - DMU object for xattrs */ | |
| 108 | uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */ | |
| 109 | uint64_t zp_flags; /* 120 - persistent flags */ | |
| 110 | uint64_t zp_uid; /* 128 - file owner */ | |
| 111 | uint64_t zp_gid; /* 136 - owning group */ | |
| 112 | uint64_t zp_zap; /* 144 - extra attributes */ | |
| 113 | uint64_t zp_pad[3]; /* 152 - future */ | |
| 114 | zfs_acl_phys_t zp_acl; /* 176 - 263 ACL */ | |
| 115 | /* | |
| 116 | * Data may pad out any remaining bytes in the znode buffer, eg: | |
| 117 | * | |
| 118 | * |<---------------------- dnode_phys (512) ------------------------>| | |
| 119 | * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->| | |
| 120 | * |<---- znode (264) ---->|<---- data (56) ---->| | |
| 121 | * | |
| 122 | * At present, we use this space for the following: | |
| 123 | * - symbolic links | |
| 124 | * - 32-byte anti-virus scanstamp (regular files only) | |
| 125 | */ | |
| 126 | } znode_phys_t; | |
| 127 | ||
| 128 | #ifdef _KERNEL | |
| 129 | int zfs_sa_readlink(struct znode *, uio_t *); | |
| 130 | void zfs_sa_symlink(struct znode *, char *link, int len, dmu_tx_t *); | |
| 131 | void zfs_sa_upgrade(struct sa_handle *, dmu_tx_t *); | |
| 132 | void zfs_sa_get_scanstamp(struct znode *, xvattr_t *); | |
| 133 | void zfs_sa_set_scanstamp(struct znode *, xvattr_t *, dmu_tx_t *); | |
| 134 | void zfs_sa_uprade_pre(struct sa_handle *, void *, dmu_tx_t *); | |
| 135 | void zfs_sa_upgrade_post(struct sa_handle *, void *, dmu_tx_t *); | |
| 136 | void zfs_sa_upgrade_txholds(dmu_tx_t *, struct znode *); | |
| 137 | #endif | |
| 138 | ||
| 139 | #ifdef __cplusplus | |
| 140 | } | |
| 141 | #endif | |
| 142 | ||
| 143 | #endif /* _SYS_ZFS_SA_H */ |