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-rw-r--r--uts/common/fs/zfs/zfs_replay.c931
1 files changed, 931 insertions, 0 deletions
diff --git a/uts/common/fs/zfs/zfs_replay.c b/uts/common/fs/zfs/zfs_replay.c
new file mode 100644
index 000000000000..9fb336856990
--- /dev/null
+++ b/uts/common/fs/zfs/zfs_replay.c
@@ -0,0 +1,931 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/sysmacros.h>
+#include <sys/cmn_err.h>
+#include <sys/kmem.h>
+#include <sys/thread.h>
+#include <sys/file.h>
+#include <sys/fcntl.h>
+#include <sys/vfs.h>
+#include <sys/fs/zfs.h>
+#include <sys/zfs_znode.h>
+#include <sys/zfs_dir.h>
+#include <sys/zfs_acl.h>
+#include <sys/zfs_fuid.h>
+#include <sys/spa.h>
+#include <sys/zil.h>
+#include <sys/byteorder.h>
+#include <sys/stat.h>
+#include <sys/mode.h>
+#include <sys/acl.h>
+#include <sys/atomic.h>
+#include <sys/cred.h>
+
+/*
+ * Functions to replay ZFS intent log (ZIL) records
+ * The functions are called through a function vector (zfs_replay_vector)
+ * which is indexed by the transaction type.
+ */
+
+static void
+zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
+ uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid)
+{
+ bzero(vap, sizeof (*vap));
+ vap->va_mask = (uint_t)mask;
+ vap->va_type = IFTOVT(mode);
+ vap->va_mode = mode & MODEMASK;
+ vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
+ vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
+ vap->va_rdev = zfs_cmpldev(rdev);
+ vap->va_nodeid = nodeid;
+}
+
+/* ARGSUSED */
+static int
+zfs_replay_error(zfsvfs_t *zfsvfs, lr_t *lr, boolean_t byteswap)
+{
+ return (ENOTSUP);
+}
+
+static void
+zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
+{
+ xoptattr_t *xoap = NULL;
+ uint64_t *attrs;
+ uint64_t *crtime;
+ uint32_t *bitmap;
+ void *scanstamp;
+ int i;
+
+ xvap->xva_vattr.va_mask |= AT_XVATTR;
+ if ((xoap = xva_getxoptattr(xvap)) == NULL) {
+ xvap->xva_vattr.va_mask &= ~AT_XVATTR; /* shouldn't happen */
+ return;
+ }
+
+ ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize);
+
+ bitmap = &lrattr->lr_attr_bitmap;
+ for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++)
+ xvap->xva_reqattrmap[i] = *bitmap;
+
+ attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1);
+ crtime = attrs + 1;
+ scanstamp = (caddr_t)(crtime + 2);
+
+ if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
+ xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
+ xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
+ xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_READONLY))
+ xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
+ xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
+ xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
+ xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
+ xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
+ xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
+ xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
+ xoap->xoa_av_quarantined =
+ ((*attrs & XAT0_AV_QUARANTINED) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
+ ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime);
+ if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
+ bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ);
+ if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
+ xoap->xoa_reparse = ((*attrs & XAT0_REPARSE) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_OFFLINE))
+ xoap->xoa_offline = ((*attrs & XAT0_OFFLINE) != 0);
+ if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
+ xoap->xoa_sparse = ((*attrs & XAT0_SPARSE) != 0);
+}
+
+static int
+zfs_replay_domain_cnt(uint64_t uid, uint64_t gid)
+{
+ uint64_t uid_idx;
+ uint64_t gid_idx;
+ int domcnt = 0;
+
+ uid_idx = FUID_INDEX(uid);
+ gid_idx = FUID_INDEX(gid);
+ if (uid_idx)
+ domcnt++;
+ if (gid_idx > 0 && gid_idx != uid_idx)
+ domcnt++;
+
+ return (domcnt);
+}
+
+static void *
+zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start,
+ int domcnt)
+{
+ int i;
+
+ for (i = 0; i != domcnt; i++) {
+ fuid_infop->z_domain_table[i] = start;
+ start = (caddr_t)start + strlen(start) + 1;
+ }
+
+ return (start);
+}
+
+/*
+ * Set the uid/gid in the fuid_info structure.
+ */
+static void
+zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid)
+{
+ /*
+ * If owner or group are log specific FUIDs then slurp up
+ * domain information and build zfs_fuid_info_t
+ */
+ if (IS_EPHEMERAL(uid))
+ fuid_infop->z_fuid_owner = uid;
+
+ if (IS_EPHEMERAL(gid))
+ fuid_infop->z_fuid_group = gid;
+}
+
+/*
+ * Load fuid domains into fuid_info_t
+ */
+static zfs_fuid_info_t *
+zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid)
+{
+ int domcnt;
+
+ zfs_fuid_info_t *fuid_infop;
+
+ fuid_infop = zfs_fuid_info_alloc();
+
+ domcnt = zfs_replay_domain_cnt(uid, gid);
+
+ if (domcnt == 0)
+ return (fuid_infop);
+
+ fuid_infop->z_domain_table =
+ kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
+
+ zfs_replay_fuid_ugid(fuid_infop, uid, gid);
+
+ fuid_infop->z_domain_cnt = domcnt;
+ *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt);
+ return (fuid_infop);
+}
+
+/*
+ * load zfs_fuid_t's and fuid_domains into fuid_info_t
+ */
+static zfs_fuid_info_t *
+zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid,
+ uint64_t gid)
+{
+ uint64_t *log_fuid = (uint64_t *)start;
+ zfs_fuid_info_t *fuid_infop;
+ int i;
+
+ fuid_infop = zfs_fuid_info_alloc();
+ fuid_infop->z_domain_cnt = domcnt;
+
+ fuid_infop->z_domain_table =
+ kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
+
+ for (i = 0; i != idcnt; i++) {
+ zfs_fuid_t *zfuid;
+
+ zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP);
+ zfuid->z_logfuid = *log_fuid;
+ zfuid->z_id = -1;
+ zfuid->z_domidx = 0;
+ list_insert_tail(&fuid_infop->z_fuids, zfuid);
+ log_fuid++;
+ }
+
+ zfs_replay_fuid_ugid(fuid_infop, uid, gid);
+
+ *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt);
+ return (fuid_infop);
+}
+
+static void
+zfs_replay_swap_attrs(lr_attr_t *lrattr)
+{
+ /* swap the lr_attr structure */
+ byteswap_uint32_array(lrattr, sizeof (*lrattr));
+ /* swap the bitmap */
+ byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) *
+ sizeof (uint32_t));
+ /* swap the attributes, create time + 64 bit word for attributes */
+ byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) *
+ (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t));
+}
+
+/*
+ * Replay file create with optional ACL, xvattr information as well
+ * as option FUID information.
+ */
+static int
+zfs_replay_create_acl(zfsvfs_t *zfsvfs,
+ lr_acl_create_t *lracl, boolean_t byteswap)
+{
+ char *name = NULL; /* location determined later */
+ lr_create_t *lr = (lr_create_t *)lracl;
+ znode_t *dzp;
+ vnode_t *vp = NULL;
+ xvattr_t xva;
+ int vflg = 0;
+ vsecattr_t vsec = { 0 };
+ lr_attr_t *lrattr;
+ void *aclstart;
+ void *fuidstart;
+ size_t xvatlen = 0;
+ uint64_t txtype;
+ int error;
+
+ txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
+ if (byteswap) {
+ byteswap_uint64_array(lracl, sizeof (*lracl));
+ if (txtype == TX_CREATE_ACL_ATTR ||
+ txtype == TX_MKDIR_ACL_ATTR) {
+ lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
+ zfs_replay_swap_attrs(lrattr);
+ xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
+ }
+
+ aclstart = (caddr_t)(lracl + 1) + xvatlen;
+ zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE);
+ /* swap fuids */
+ if (lracl->lr_fuidcnt) {
+ byteswap_uint64_array((caddr_t)aclstart +
+ ZIL_ACE_LENGTH(lracl->lr_acl_bytes),
+ lracl->lr_fuidcnt * sizeof (uint64_t));
+ }
+ }
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
+ return (error);
+
+ xva_init(&xva);
+ zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
+ lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid);
+
+ /*
+ * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
+ * eventually end up in zfs_mknode(), which assigns the object's
+ * creation time and generation number. The generic VOP_CREATE()
+ * doesn't have either concept, so we smuggle the values inside
+ * the vattr's otherwise unused va_ctime and va_nblocks fields.
+ */
+ ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
+ xva.xva_vattr.va_nblocks = lr->lr_gen;
+
+ error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
+ if (error != ENOENT)
+ goto bail;
+
+ if (lr->lr_common.lrc_txtype & TX_CI)
+ vflg |= FIGNORECASE;
+ switch (txtype) {
+ case TX_CREATE_ACL:
+ aclstart = (caddr_t)(lracl + 1);
+ fuidstart = (caddr_t)aclstart +
+ ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
+ zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
+ (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
+ lr->lr_uid, lr->lr_gid);
+ /*FALLTHROUGH*/
+ case TX_CREATE_ACL_ATTR:
+ if (name == NULL) {
+ lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
+ xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
+ xva.xva_vattr.va_mask |= AT_XVATTR;
+ zfs_replay_xvattr(lrattr, &xva);
+ }
+ vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
+ vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
+ vsec.vsa_aclcnt = lracl->lr_aclcnt;
+ vsec.vsa_aclentsz = lracl->lr_acl_bytes;
+ vsec.vsa_aclflags = lracl->lr_acl_flags;
+ if (zfsvfs->z_fuid_replay == NULL) {
+ fuidstart = (caddr_t)(lracl + 1) + xvatlen +
+ ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
+ zfsvfs->z_fuid_replay =
+ zfs_replay_fuids(fuidstart,
+ (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
+ lr->lr_uid, lr->lr_gid);
+ }
+
+ error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
+ 0, 0, &vp, kcred, vflg, NULL, &vsec);
+ break;
+ case TX_MKDIR_ACL:
+ aclstart = (caddr_t)(lracl + 1);
+ fuidstart = (caddr_t)aclstart +
+ ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
+ zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
+ (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
+ lr->lr_uid, lr->lr_gid);
+ /*FALLTHROUGH*/
+ case TX_MKDIR_ACL_ATTR:
+ if (name == NULL) {
+ lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
+ xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
+ zfs_replay_xvattr(lrattr, &xva);
+ }
+ vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
+ vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
+ vsec.vsa_aclcnt = lracl->lr_aclcnt;
+ vsec.vsa_aclentsz = lracl->lr_acl_bytes;
+ vsec.vsa_aclflags = lracl->lr_acl_flags;
+ if (zfsvfs->z_fuid_replay == NULL) {
+ fuidstart = (caddr_t)(lracl + 1) + xvatlen +
+ ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
+ zfsvfs->z_fuid_replay =
+ zfs_replay_fuids(fuidstart,
+ (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
+ lr->lr_uid, lr->lr_gid);
+ }
+ error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
+ &vp, kcred, NULL, vflg, &vsec);
+ break;
+ default:
+ error = ENOTSUP;
+ }
+
+bail:
+ if (error == 0 && vp != NULL)
+ VN_RELE(vp);
+
+ VN_RELE(ZTOV(dzp));
+
+ if (zfsvfs->z_fuid_replay)
+ zfs_fuid_info_free(zfsvfs->z_fuid_replay);
+ zfsvfs->z_fuid_replay = NULL;
+
+ return (error);
+}
+
+static int
+zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap)
+{
+ char *name = NULL; /* location determined later */
+ char *link; /* symlink content follows name */
+ znode_t *dzp;
+ vnode_t *vp = NULL;
+ xvattr_t xva;
+ int vflg = 0;
+ size_t lrsize = sizeof (lr_create_t);
+ lr_attr_t *lrattr;
+ void *start;
+ size_t xvatlen;
+ uint64_t txtype;
+ int error;
+
+ txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
+ if (byteswap) {
+ byteswap_uint64_array(lr, sizeof (*lr));
+ if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR)
+ zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
+ }
+
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
+ return (error);
+
+ xva_init(&xva);
+ zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
+ lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid);
+
+ /*
+ * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
+ * eventually end up in zfs_mknode(), which assigns the object's
+ * creation time and generation number. The generic VOP_CREATE()
+ * doesn't have either concept, so we smuggle the values inside
+ * the vattr's otherwise unused va_ctime and va_nblocks fields.
+ */
+ ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
+ xva.xva_vattr.va_nblocks = lr->lr_gen;
+
+ error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
+ if (error != ENOENT)
+ goto out;
+
+ if (lr->lr_common.lrc_txtype & TX_CI)
+ vflg |= FIGNORECASE;
+
+ /*
+ * Symlinks don't have fuid info, and CIFS never creates
+ * symlinks.
+ *
+ * The _ATTR versions will grab the fuid info in their subcases.
+ */
+ if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK &&
+ (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR &&
+ (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) {
+ start = (lr + 1);
+ zfsvfs->z_fuid_replay =
+ zfs_replay_fuid_domain(start, &start,
+ lr->lr_uid, lr->lr_gid);
+ }
+
+ switch (txtype) {
+ case TX_CREATE_ATTR:
+ lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
+ xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
+ zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
+ start = (caddr_t)(lr + 1) + xvatlen;
+ zfsvfs->z_fuid_replay =
+ zfs_replay_fuid_domain(start, &start,
+ lr->lr_uid, lr->lr_gid);
+ name = (char *)start;
+
+ /*FALLTHROUGH*/
+ case TX_CREATE:
+ if (name == NULL)
+ name = (char *)start;
+
+ error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
+ 0, 0, &vp, kcred, vflg, NULL, NULL);
+ break;
+ case TX_MKDIR_ATTR:
+ lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
+ xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
+ zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
+ start = (caddr_t)(lr + 1) + xvatlen;
+ zfsvfs->z_fuid_replay =
+ zfs_replay_fuid_domain(start, &start,
+ lr->lr_uid, lr->lr_gid);
+ name = (char *)start;
+
+ /*FALLTHROUGH*/
+ case TX_MKDIR:
+ if (name == NULL)
+ name = (char *)(lr + 1);
+
+ error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
+ &vp, kcred, NULL, vflg, NULL);
+ break;
+ case TX_MKXATTR:
+ error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred);
+ break;
+ case TX_SYMLINK:
+ name = (char *)(lr + 1);
+ link = name + strlen(name) + 1;
+ error = VOP_SYMLINK(ZTOV(dzp), name, &xva.xva_vattr,
+ link, kcred, NULL, vflg);
+ break;
+ default:
+ error = ENOTSUP;
+ }
+
+out:
+ if (error == 0 && vp != NULL)
+ VN_RELE(vp);
+
+ VN_RELE(ZTOV(dzp));
+
+ if (zfsvfs->z_fuid_replay)
+ zfs_fuid_info_free(zfsvfs->z_fuid_replay);
+ zfsvfs->z_fuid_replay = NULL;
+ return (error);
+}
+
+static int
+zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap)
+{
+ char *name = (char *)(lr + 1); /* name follows lr_remove_t */
+ znode_t *dzp;
+ int error;
+ int vflg = 0;
+
+ if (byteswap)
+ byteswap_uint64_array(lr, sizeof (*lr));
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
+ return (error);
+
+ if (lr->lr_common.lrc_txtype & TX_CI)
+ vflg |= FIGNORECASE;
+
+ switch ((int)lr->lr_common.lrc_txtype) {
+ case TX_REMOVE:
+ error = VOP_REMOVE(ZTOV(dzp), name, kcred, NULL, vflg);
+ break;
+ case TX_RMDIR:
+ error = VOP_RMDIR(ZTOV(dzp), name, NULL, kcred, NULL, vflg);
+ break;
+ default:
+ error = ENOTSUP;
+ }
+
+ VN_RELE(ZTOV(dzp));
+
+ return (error);
+}
+
+static int
+zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap)
+{
+ char *name = (char *)(lr + 1); /* name follows lr_link_t */
+ znode_t *dzp, *zp;
+ int error;
+ int vflg = 0;
+
+ if (byteswap)
+ byteswap_uint64_array(lr, sizeof (*lr));
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
+ return (error);
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
+ VN_RELE(ZTOV(dzp));
+ return (error);
+ }
+
+ if (lr->lr_common.lrc_txtype & TX_CI)
+ vflg |= FIGNORECASE;
+
+ error = VOP_LINK(ZTOV(dzp), ZTOV(zp), name, kcred, NULL, vflg);
+
+ VN_RELE(ZTOV(zp));
+ VN_RELE(ZTOV(dzp));
+
+ return (error);
+}
+
+static int
+zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap)
+{
+ char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
+ char *tname = sname + strlen(sname) + 1;
+ znode_t *sdzp, *tdzp;
+ int error;
+ int vflg = 0;
+
+ if (byteswap)
+ byteswap_uint64_array(lr, sizeof (*lr));
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
+ return (error);
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
+ VN_RELE(ZTOV(sdzp));
+ return (error);
+ }
+
+ if (lr->lr_common.lrc_txtype & TX_CI)
+ vflg |= FIGNORECASE;
+
+ error = VOP_RENAME(ZTOV(sdzp), sname, ZTOV(tdzp), tname, kcred,
+ NULL, vflg);
+
+ VN_RELE(ZTOV(tdzp));
+ VN_RELE(ZTOV(sdzp));
+
+ return (error);
+}
+
+static int
+zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
+{
+ char *data = (char *)(lr + 1); /* data follows lr_write_t */
+ znode_t *zp;
+ int error;
+ ssize_t resid;
+ uint64_t eod, offset, length;
+
+ if (byteswap)
+ byteswap_uint64_array(lr, sizeof (*lr));
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
+ /*
+ * As we can log writes out of order, it's possible the
+ * file has been removed. In this case just drop the write
+ * and return success.
+ */
+ if (error == ENOENT)
+ error = 0;
+ return (error);
+ }
+
+ offset = lr->lr_offset;
+ length = lr->lr_length;
+ eod = offset + length; /* end of data for this write */
+
+ /*
+ * This may be a write from a dmu_sync() for a whole block,
+ * and may extend beyond the current end of the file.
+ * We can't just replay what was written for this TX_WRITE as
+ * a future TX_WRITE2 may extend the eof and the data for that
+ * write needs to be there. So we write the whole block and
+ * reduce the eof. This needs to be done within the single dmu
+ * transaction created within vn_rdwr -> zfs_write. So a possible
+ * new end of file is passed through in zfsvfs->z_replay_eof
+ */
+
+ zfsvfs->z_replay_eof = 0; /* 0 means don't change end of file */
+
+ /* If it's a dmu_sync() block, write the whole block */
+ if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
+ uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
+ if (length < blocksize) {
+ offset -= offset % blocksize;
+ length = blocksize;
+ }
+ if (zp->z_size < eod)
+ zfsvfs->z_replay_eof = eod;
+ }
+
+ error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, length, offset,
+ UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid);
+
+ VN_RELE(ZTOV(zp));
+ zfsvfs->z_replay_eof = 0; /* safety */
+
+ return (error);
+}
+
+/*
+ * TX_WRITE2 are only generated when dmu_sync() returns EALREADY
+ * meaning the pool block is already being synced. So now that we always write
+ * out full blocks, all we have to do is expand the eof if
+ * the file is grown.
+ */
+static int
+zfs_replay_write2(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
+{
+ znode_t *zp;
+ int error;
+ uint64_t end;
+
+ if (byteswap)
+ byteswap_uint64_array(lr, sizeof (*lr));
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
+ return (error);
+
+top:
+ end = lr->lr_offset + lr->lr_length;
+ if (end > zp->z_size) {
+ dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os);
+
+ zp->z_size = end;
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
+ error = dmu_tx_assign(tx, TXG_WAIT);
+ if (error) {
+ VN_RELE(ZTOV(zp));
+ if (error == ERESTART) {
+ dmu_tx_wait(tx);
+ dmu_tx_abort(tx);
+ goto top;
+ }
+ dmu_tx_abort(tx);
+ return (error);
+ }
+ (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs),
+ (void *)&zp->z_size, sizeof (uint64_t), tx);
+
+ /* Ensure the replayed seq is updated */
+ (void) zil_replaying(zfsvfs->z_log, tx);
+
+ dmu_tx_commit(tx);
+ }
+
+ VN_RELE(ZTOV(zp));
+
+ return (error);
+}
+
+static int
+zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap)
+{
+ znode_t *zp;
+ flock64_t fl;
+ int error;
+
+ if (byteswap)
+ byteswap_uint64_array(lr, sizeof (*lr));
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
+ return (error);
+
+ bzero(&fl, sizeof (fl));
+ fl.l_type = F_WRLCK;
+ fl.l_whence = 0;
+ fl.l_start = lr->lr_offset;
+ fl.l_len = lr->lr_length;
+
+ error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
+ lr->lr_offset, kcred, NULL);
+
+ VN_RELE(ZTOV(zp));
+
+ return (error);
+}
+
+static int
+zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap)
+{
+ znode_t *zp;
+ xvattr_t xva;
+ vattr_t *vap = &xva.xva_vattr;
+ int error;
+ void *start;
+
+ xva_init(&xva);
+ if (byteswap) {
+ byteswap_uint64_array(lr, sizeof (*lr));
+
+ if ((lr->lr_mask & AT_XVATTR) &&
+ zfsvfs->z_version >= ZPL_VERSION_INITIAL)
+ zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
+ }
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
+ return (error);
+
+ zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode,
+ lr->lr_uid, lr->lr_gid, 0, lr->lr_foid);
+
+ vap->va_size = lr->lr_size;
+ ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime);
+ ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime);
+
+ /*
+ * Fill in xvattr_t portions if necessary.
+ */
+
+ start = (lr_setattr_t *)(lr + 1);
+ if (vap->va_mask & AT_XVATTR) {
+ zfs_replay_xvattr((lr_attr_t *)start, &xva);
+ start = (caddr_t)start +
+ ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize);
+ } else
+ xva.xva_vattr.va_mask &= ~AT_XVATTR;
+
+ zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start,
+ lr->lr_uid, lr->lr_gid);
+
+ error = VOP_SETATTR(ZTOV(zp), vap, 0, kcred, NULL);
+
+ zfs_fuid_info_free(zfsvfs->z_fuid_replay);
+ zfsvfs->z_fuid_replay = NULL;
+ VN_RELE(ZTOV(zp));
+
+ return (error);
+}
+
+static int
+zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap)
+{
+ ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
+ vsecattr_t vsa;
+ znode_t *zp;
+ int error;
+
+ if (byteswap) {
+ byteswap_uint64_array(lr, sizeof (*lr));
+ zfs_oldace_byteswap(ace, lr->lr_aclcnt);
+ }
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
+ return (error);
+
+ bzero(&vsa, sizeof (vsa));
+ vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
+ vsa.vsa_aclcnt = lr->lr_aclcnt;
+ vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
+ vsa.vsa_aclflags = 0;
+ vsa.vsa_aclentp = ace;
+
+ error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
+
+ VN_RELE(ZTOV(zp));
+
+ return (error);
+}
+
+/*
+ * Replaying ACLs is complicated by FUID support.
+ * The log record may contain some optional data
+ * to be used for replaying FUID's. These pieces
+ * are the actual FUIDs that were created initially.
+ * The FUID table index may no longer be valid and
+ * during zfs_create() a new index may be assigned.
+ * Because of this the log will contain the original
+ * doman+rid in order to create a new FUID.
+ *
+ * The individual ACEs may contain an ephemeral uid/gid which is no
+ * longer valid and will need to be replaced with an actual FUID.
+ *
+ */
+static int
+zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap)
+{
+ ace_t *ace = (ace_t *)(lr + 1);
+ vsecattr_t vsa;
+ znode_t *zp;
+ int error;
+
+ if (byteswap) {
+ byteswap_uint64_array(lr, sizeof (*lr));
+ zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE);
+ if (lr->lr_fuidcnt) {
+ byteswap_uint64_array((caddr_t)ace +
+ ZIL_ACE_LENGTH(lr->lr_acl_bytes),
+ lr->lr_fuidcnt * sizeof (uint64_t));
+ }
+ }
+
+ if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
+ return (error);
+
+ bzero(&vsa, sizeof (vsa));
+ vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS;
+ vsa.vsa_aclcnt = lr->lr_aclcnt;
+ vsa.vsa_aclentp = ace;
+ vsa.vsa_aclentsz = lr->lr_acl_bytes;
+ vsa.vsa_aclflags = lr->lr_acl_flags;
+
+ if (lr->lr_fuidcnt) {
+ void *fuidstart = (caddr_t)ace +
+ ZIL_ACE_LENGTH(lr->lr_acl_bytes);
+
+ zfsvfs->z_fuid_replay =
+ zfs_replay_fuids(fuidstart, &fuidstart,
+ lr->lr_fuidcnt, lr->lr_domcnt, 0, 0);
+ }
+
+ error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
+
+ if (zfsvfs->z_fuid_replay)
+ zfs_fuid_info_free(zfsvfs->z_fuid_replay);
+
+ zfsvfs->z_fuid_replay = NULL;
+ VN_RELE(ZTOV(zp));
+
+ return (error);
+}
+
+/*
+ * Callback vectors for replaying records
+ */
+zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = {
+ zfs_replay_error, /* 0 no such transaction type */
+ zfs_replay_create, /* TX_CREATE */
+ zfs_replay_create, /* TX_MKDIR */
+ zfs_replay_create, /* TX_MKXATTR */
+ zfs_replay_create, /* TX_SYMLINK */
+ zfs_replay_remove, /* TX_REMOVE */
+ zfs_replay_remove, /* TX_RMDIR */
+ zfs_replay_link, /* TX_LINK */
+ zfs_replay_rename, /* TX_RENAME */
+ zfs_replay_write, /* TX_WRITE */
+ zfs_replay_truncate, /* TX_TRUNCATE */
+ zfs_replay_setattr, /* TX_SETATTR */
+ zfs_replay_acl_v0, /* TX_ACL_V0 */
+ zfs_replay_acl, /* TX_ACL */
+ zfs_replay_create_acl, /* TX_CREATE_ACL */
+ zfs_replay_create, /* TX_CREATE_ATTR */
+ zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */
+ zfs_replay_create_acl, /* TX_MKDIR_ACL */
+ zfs_replay_create, /* TX_MKDIR_ATTR */
+ zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */
+ zfs_replay_write2, /* TX_WRITE2 */
+};