4 * The contents of this file are subject to the terms of the
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6 * You may not use this file except in compliance with the License.
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9 * or http://www.opensolaris.org/os/licensing.
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15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
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22 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
25 #include <sys/types.h>
26 #include <sys/param.h>
27 #include <sys/vnode.h>
29 #include <sys/zfs_acl.h>
30 #include <sys/zfs_sa.h>
33 * ZPL attribute registration table.
34 * Order of attributes doesn't matter
35 * a unique value will be assigned for each
36 * attribute that is file system specific
38 * This is just the set of ZPL attributes that this
39 * version of ZFS deals with natively. The file system
40 * could have other attributes stored in files, but they will be
41 * ignored. The SA framework will preserve them, just that
42 * this version of ZFS won't change or delete them.
45 sa_attr_reg_t zfs_attr_table[ZPL_END+1] = {
46 {"ZPL_ATIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 0},
47 {"ZPL_MTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 1},
48 {"ZPL_CTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 2},
49 {"ZPL_CRTIME", sizeof (uint64_t) * 2, SA_UINT64_ARRAY, 3},
50 {"ZPL_GEN", sizeof (uint64_t), SA_UINT64_ARRAY, 4},
51 {"ZPL_MODE", sizeof (uint64_t), SA_UINT64_ARRAY, 5},
52 {"ZPL_SIZE", sizeof (uint64_t), SA_UINT64_ARRAY, 6},
53 {"ZPL_PARENT", sizeof (uint64_t), SA_UINT64_ARRAY, 7},
54 {"ZPL_LINKS", sizeof (uint64_t), SA_UINT64_ARRAY, 8},
55 {"ZPL_XATTR", sizeof (uint64_t), SA_UINT64_ARRAY, 9},
56 {"ZPL_RDEV", sizeof (uint64_t), SA_UINT64_ARRAY, 10},
57 {"ZPL_FLAGS", sizeof (uint64_t), SA_UINT64_ARRAY, 11},
58 {"ZPL_UID", sizeof (uint64_t), SA_UINT64_ARRAY, 12},
59 {"ZPL_GID", sizeof (uint64_t), SA_UINT64_ARRAY, 13},
60 {"ZPL_PAD", sizeof (uint64_t) * 4, SA_UINT64_ARRAY, 14},
61 {"ZPL_ZNODE_ACL", 88, SA_UINT8_ARRAY, 15},
62 {"ZPL_DACL_COUNT", sizeof (uint64_t), SA_UINT64_ARRAY, 0},
63 {"ZPL_SYMLINK", 0, SA_UINT8_ARRAY, 0},
64 {"ZPL_SCANSTAMP", 32, SA_UINT8_ARRAY, 0},
65 {"ZPL_DACL_ACES", 0, SA_ACL, 0},
72 zfs_sa_readlink(znode_t *zp, uio_t *uio)
74 dmu_buf_t *db = sa_get_db(zp->z_sa_hdl);
79 if (bufsz + ZFS_OLD_ZNODE_PHYS_SIZE <= db->db_size) {
80 error = uiomove((caddr_t)db->db_data +
81 ZFS_OLD_ZNODE_PHYS_SIZE,
82 MIN((size_t)bufsz, uio->uio_resid), UIO_READ, uio);
85 if ((error = dmu_buf_hold(zp->z_zfsvfs->z_os, zp->z_id,
86 0, FTAG, &dbp, DMU_READ_NO_PREFETCH)) == 0) {
87 error = uiomove(dbp->db_data,
88 MIN((size_t)bufsz, uio->uio_resid), UIO_READ, uio);
89 dmu_buf_rele(dbp, FTAG);
96 zfs_sa_symlink(znode_t *zp, char *link, int len, dmu_tx_t *tx)
98 dmu_buf_t *db = sa_get_db(zp->z_sa_hdl);
100 if (ZFS_OLD_ZNODE_PHYS_SIZE + len <= dmu_bonus_max()) {
101 VERIFY(dmu_set_bonus(db,
102 len + ZFS_OLD_ZNODE_PHYS_SIZE, tx) == 0);
104 bcopy(link, (caddr_t)db->db_data +
105 ZFS_OLD_ZNODE_PHYS_SIZE, len);
110 zfs_grow_blocksize(zp, len, tx);
111 VERIFY(0 == dmu_buf_hold(zp->z_zfsvfs->z_os,
112 zp->z_id, 0, FTAG, &dbp, DMU_READ_NO_PREFETCH));
114 dmu_buf_will_dirty(dbp, tx);
116 ASSERT3U(len, <=, dbp->db_size);
117 bcopy(link, dbp->db_data, len);
118 dmu_buf_rele(dbp, FTAG);
123 zfs_sa_get_scanstamp(znode_t *zp, xvattr_t *xvap)
125 zfsvfs_t *zfsvfs = zp->z_zfsvfs;
128 VERIFY((xoap = xva_getxoptattr(xvap)) != NULL);
130 if (sa_lookup(zp->z_sa_hdl, SA_ZPL_SCANSTAMP(zfsvfs),
131 &xoap->xoa_av_scanstamp,
132 sizeof (xoap->xoa_av_scanstamp)) != 0)
135 dmu_object_info_t doi;
136 dmu_buf_t *db = sa_get_db(zp->z_sa_hdl);
139 if (!(zp->z_pflags & ZFS_BONUS_SCANSTAMP))
142 sa_object_info(zp->z_sa_hdl, &doi);
143 len = sizeof (xoap->xoa_av_scanstamp) +
144 ZFS_OLD_ZNODE_PHYS_SIZE;
146 if (len <= doi.doi_bonus_size) {
147 (void) memcpy(xoap->xoa_av_scanstamp,
148 (caddr_t)db->db_data + ZFS_OLD_ZNODE_PHYS_SIZE,
149 sizeof (xoap->xoa_av_scanstamp));
152 XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP);
156 zfs_sa_set_scanstamp(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx)
158 zfsvfs_t *zfsvfs = zp->z_zfsvfs;
161 VERIFY((xoap = xva_getxoptattr(xvap)) != NULL);
163 VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SCANSTAMP(zfsvfs),
164 &xoap->xoa_av_scanstamp,
165 sizeof (xoap->xoa_av_scanstamp), tx));
167 dmu_object_info_t doi;
168 dmu_buf_t *db = sa_get_db(zp->z_sa_hdl);
171 sa_object_info(zp->z_sa_hdl, &doi);
172 len = sizeof (xoap->xoa_av_scanstamp) +
173 ZFS_OLD_ZNODE_PHYS_SIZE;
174 if (len > doi.doi_bonus_size)
175 VERIFY(dmu_set_bonus(db, len, tx) == 0);
176 (void) memcpy((caddr_t)db->db_data + ZFS_OLD_ZNODE_PHYS_SIZE,
177 xoap->xoa_av_scanstamp, sizeof (xoap->xoa_av_scanstamp));
179 zp->z_pflags |= ZFS_BONUS_SCANSTAMP;
180 VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_FLAGS(zfsvfs),
181 &zp->z_pflags, sizeof (uint64_t), tx));
186 * I'm not convinced we should do any of this upgrade.
187 * since the SA code can read both old/new znode formats
188 * with probably little to know performance difference.
190 * All new files will be created with the new format.
194 zfs_sa_upgrade(sa_handle_t *hdl, dmu_tx_t *tx)
196 dmu_buf_t *db = sa_get_db(hdl);
197 znode_t *zp = sa_get_userdata(hdl);
198 zfsvfs_t *zfsvfs = zp->z_zfsvfs;
199 sa_bulk_attr_t bulk[20];
201 sa_bulk_attr_t sa_attrs[20] = { 0 };
202 zfs_acl_locator_cb_t locate = { 0 };
203 uint64_t uid, gid, mode, rdev, xattr, parent;
204 uint64_t crtime[2], mtime[2], ctime[2];
205 zfs_acl_phys_t znode_acl;
206 char scanstamp[AV_SCANSTAMP_SZ];
209 * No upgrade if ACL isn't cached
210 * since we won't know which locks are held
211 * and ready the ACL would require special "locked"
212 * interfaces that would be messy
214 if (zp->z_acl_cached == NULL || ZTOV(zp)->v_type == VLNK)
217 /* First do a bulk query of the attributes that aren't cached */
218 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, &mtime, 16);
219 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, &ctime, 16);
220 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CRTIME(zfsvfs), NULL, &crtime, 16);
221 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8);
222 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8);
223 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_XATTR(zfsvfs), NULL, &xattr, 8);
224 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_RDEV(zfsvfs), NULL, &rdev, 8);
225 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, &uid, 8);
226 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, &gid, 8);
227 SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ZNODE_ACL(zfsvfs), NULL,
230 if (sa_bulk_lookup_locked(hdl, bulk, count) != 0)
235 * While the order here doesn't matter its best to try and organize
236 * it is such a way to pick up an already existing layout number
239 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8);
240 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_SIZE(zfsvfs), NULL,
242 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_GEN(zfsvfs),
243 NULL, &zp->z_gen, 8);
244 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_UID(zfsvfs), NULL, &uid, 8);
245 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_GID(zfsvfs), NULL, &gid, 8);
246 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_PARENT(zfsvfs),
248 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_FLAGS(zfsvfs), NULL,
250 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_ATIME(zfsvfs), NULL,
252 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_MTIME(zfsvfs), NULL,
254 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_CTIME(zfsvfs), NULL,
256 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_CRTIME(zfsvfs), NULL,
258 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_LINKS(zfsvfs), NULL,
260 if (zp->z_vnode->v_type == VBLK || zp->z_vnode->v_type == VCHR)
261 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_RDEV(zfsvfs), NULL,
263 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_DACL_COUNT(zfsvfs), NULL,
264 &zp->z_acl_cached->z_acl_count, 8);
266 if (zp->z_acl_cached->z_version < ZFS_ACL_VERSION_FUID)
267 zfs_acl_xform(zp, zp->z_acl_cached, CRED());
269 locate.cb_aclp = zp->z_acl_cached;
270 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_DACL_ACES(zfsvfs),
271 zfs_acl_data_locator, &locate, zp->z_acl_cached->z_acl_bytes);
273 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_RDEV(zfsvfs),
276 /* if scanstamp then add scanstamp */
278 if (zp->z_pflags & ZFS_BONUS_SCANSTAMP) {
279 bcopy((caddr_t)db->db_data + ZFS_OLD_ZNODE_PHYS_SIZE,
280 scanstamp, AV_SCANSTAMP_SZ);
281 SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_SCANSTAMP(zfsvfs),
282 NULL, scanstamp, AV_SCANSTAMP_SZ);
283 zp->z_pflags &= ~ZFS_BONUS_SCANSTAMP;
286 VERIFY(dmu_set_bonustype(db, DMU_OT_SA, tx) == 0);
287 VERIFY(sa_replace_all_by_template_locked(hdl, sa_attrs,
289 if (znode_acl.z_acl_extern_obj)
290 VERIFY(0 == dmu_object_free(zfsvfs->z_os,
291 znode_acl.z_acl_extern_obj, tx));
293 zp->z_is_sa = B_TRUE;
297 zfs_sa_upgrade_txholds(dmu_tx_t *tx, znode_t *zp)
299 if (!zp->z_zfsvfs->z_use_sa || zp->z_is_sa)
302 ASSERT(!zp->z_is_sa);
304 dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE);
306 if (ZFS_EXTERNAL_ACL(zp)) {
307 dmu_tx_hold_free(tx, ZFS_EXTERNAL_ACL(zp), 0,