/* * Construct a znode+inode and initialize. * * This does not do a call to dmu_set_user() that is * up to the caller to do, in case you don't want to * return the znode */ static znode_t * zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz, dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl, struct inode *dip) { znode_t *zp; struct inode *ip; uint64_t mode; uint64_t parent; sa_bulk_attr_t bulk[9]; int count = 0; ASSERT(zsb != NULL); ip = new_inode(zsb->z_sb); if (ip == NULL) return (NULL); zp = ITOZ(ip); ASSERT(zp->z_dirlocks == NULL); ASSERT3P(zp->z_acl_cached, ==, NULL); ASSERT3P(zp->z_xattr_cached, ==, NULL); ASSERT3P(zp->z_xattr_parent, ==, NULL); zp->z_moved = 0; zp->z_sa_hdl = NULL; zp->z_unlinked = 0; zp->z_atime_dirty = 0; zp->z_mapcnt = 0; zp->z_id = db->db_object; zp->z_blksz = blksz; zp->z_seq = 0x7A4653; zp->z_sync_cnt = 0; zp->z_is_zvol = B_FALSE; zp->z_is_mapped = B_FALSE; zp->z_is_ctldir = B_FALSE; zp->z_is_stale = B_FALSE; zfs_znode_sa_init(zsb, zp, db, obj_type, hdl); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, &mode, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, &zp->z_gen, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, &zp->z_size, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, &zp->z_links, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, &zp->z_pflags, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zsb), NULL, &parent, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, &zp->z_atime, 16); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, &zp->z_uid, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, &zp->z_gid, 8); if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { if (hdl == NULL) sa_handle_destroy(zp->z_sa_hdl); goto error; } zp->z_mode = mode; /* * xattr znodes hold a reference on their unique parent */ if (dip && zp->z_pflags & ZFS_XATTR) { igrab(dip); zp->z_xattr_parent = ITOZ(dip); } ip->i_ino = obj; zfs_inode_update(zp); zfs_inode_set_ops(zsb, ip); /* * The only way insert_inode_locked() can fail is if the ip->i_ino * number is already hashed for this super block. This can never * happen because the inode numbers map 1:1 with the object numbers. * * The one exception is rolling back a mounted file system, but in * this case all the active inode are unhashed during the rollback. */ VERIFY3S(insert_inode_locked(ip), ==, 0); mutex_enter(&zsb->z_znodes_lock); list_insert_tail(&zsb->z_all_znodes, zp); zsb->z_nr_znodes++; membar_producer(); mutex_exit(&zsb->z_znodes_lock); unlock_new_inode(ip); return (zp); error: unlock_new_inode(ip); iput(ip); return (NULL); }
/* * Construct a znode+inode and initialize. * * This does not do a call to dmu_set_user() that is * up to the caller to do, in case you don't want to * return the znode */ static znode_t * zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz, dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl, struct dentry *dentry, struct inode *dip) { znode_t *zp; struct inode *ip; uint64_t parent; sa_bulk_attr_t bulk[9]; int count = 0; ASSERT(zsb != NULL); ip = new_inode(zsb->z_sb); if (ip == NULL) return (NULL); zp = ITOZ(ip); ASSERT(zp->z_dirlocks == NULL); ASSERT3P(zp->z_acl_cached, ==, NULL); ASSERT3P(zp->z_xattr_cached, ==, NULL); zp->z_moved = 0; zp->z_sa_hdl = NULL; zp->z_unlinked = 0; zp->z_atime_dirty = 0; zp->z_mapcnt = 0; zp->z_id = db->db_object; zp->z_blksz = blksz; zp->z_seq = 0x7A4653; zp->z_sync_cnt = 0; zp->z_is_zvol = B_FALSE; zp->z_is_mapped = B_FALSE; zp->z_is_ctldir = B_FALSE; zfs_znode_sa_init(zsb, zp, db, obj_type, hdl); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, &zp->z_mode, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, &zp->z_gen, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, &zp->z_size, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, &zp->z_links, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL, &zp->z_pflags, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zsb), NULL, &parent, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL, &zp->z_atime, 16); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, &zp->z_uid, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, &zp->z_gid, 8); if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) { if (hdl == NULL) sa_handle_destroy(zp->z_sa_hdl); goto error; } ip->i_ino = obj; zfs_inode_update(zp); zfs_inode_set_ops(zsb, ip); if (insert_inode_locked(ip)) goto error; if (dentry) { if (zpl_xattr_security_init(ip, dip, &dentry->d_name)) goto error; d_instantiate(dentry, ip); } mutex_enter(&zsb->z_znodes_lock); list_insert_tail(&zsb->z_all_znodes, zp); zsb->z_nr_znodes++; membar_producer(); mutex_exit(&zsb->z_znodes_lock); unlock_new_inode(ip); return (zp); error: unlock_new_inode(ip); iput(ip); return NULL; }